• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ASI machine, comprising a synchronous machine (9) coupled to a kinetic energy accumulator (10) which essentially comprises: - a carcass (12) with a main shaft; - a hollow drum (18) which can rotate about the axis; - a Pony motor, for launching the drum (18); - a rotor (20) fixed on the main shaft in a coaxial manner with the drum (18) provided with coils (24) to achieve an electromagnetic coupling between the drum (18) and the rotor (20); characterized in that: - the rotor (22) comprises an iron core (21) with a certain number of poles (22) delimited by notches (23) parallel to the main shaft (11) and distributed around the circumference of the core (21) which, for each pole (22), is provided with a winding (24) wound in the notches (23) around the pole (22) concerned; - The cumulative width of all of the poles (22) in their narrowest part is at least equal to the cumulative width of all of the notches in their widest part.
    公开号:BE1026773B1
    申请号:E20195571
    申请日:2019-08-30
    公开日:2020-06-08
    发明作者:Jacques Schoebrechts；Joseph Frippiat
    申请人:Ks Research Sa；
    IPC主号:
    专利说明:

    UPS (Uninterruptible Power Supply) machine.
    The invention relates to an UPS uninterruptible power supply machine.
    ASI machines are mainly intended to safeguard users sensitive to disturbances of an electrical network, that is to say loads at the user level, such as for example intensive care services of hospitals or companies of storage of digital data , highly computerized services, for which an interruption of the electricity network for a few milliseconds endangers human lives or causes significant financial costs.
    It is known to use an ASI machine comprising a synchronous machine with low internal impedance which can function as a motor or as an alternator, this synchronous machine being coupled to an accumulator with a large reserve of kinetic energy which is stored in a metallic mass in rotation.
    Such a machine is known from European patent EP 1,533,884 by the same applicant describing an ASI machine which comprises a synchronous machine coupled to a kinetic energy accumulator essentially comprising:
    a carcass;
    a main shaft rotatably mounted in the carcass and being coupled with the synchronous machine;
    a hollow coaxial drum which can rotate freely around the main axis and independent of it;
    BE2019 / 5571 a motor, called a Pony motor, to start the drum up to a certain speed given when starting the UPS to accumulate kinetic energy in the drum;
    a rotor fixed on the main shaft in the form of a claw rotor which is provided with coils being connected with an exciter to achieve an electromagnetic coupling between the drum and the rotor in the event of a network failure in order to recover energy kinetics stored in the drum to drive the synchronous machine when a DC electric current is sent to the rotor coils via the exciter.
    This machine is connected between the network and user loads via an inductor.
    In a system without network cut-off, the drum is launched at a certain speed of for example 3000 rpm, while the speed of the main shaft with the claw rotor and the rotor of the synchronous machine is maintained at a higher speed. low of for example 1500 rpm. The speed difference constitutes the kinetic energy available to drive the synchronous machine as an alternator in the event of a network failure.
    A machine of this kind is known from EP 1,533,884. This machine has many advantages over other known ASI machines, such as:
    its reduced size;
    the fact that the machine by its combination with the self and the low impedance of the synchronous machine also plays the role of network conditioner and constitutes a filter
    BE2019 / 5571 vis-à-vis all short-term disturbances that would come on the network and a filter vis-à-vis the harmonics that would be present on the voltage supplied to users and / or on the network voltage in upstream of the UPS;
    the service life of the bearings which support the main shaft in the carcass and the drum on the shaft is related to the relative speed of these bearings not exceeding 1500 rpm in the example given above;
    the fact of being able to be connected to any generator without mechanical coupling which intervenes during the interruption of the network for a time of more than 10 seconds for example;
    the fact that you do not need an additional external motor to start the UPS system.
    The ASI machine of EP 1.533.884 is dimensioned in such a way that when a power cut occurs, the machine has sufficient kinetic energy to ensure a minimum autonomy of approximately 12 seconds with sufficient output power to supply the users.
    On the other hand, the field of use of such a machine is limited as regards its autonomy and as to the power to be supplied to the users and as for the recovery time after a network failure so that the machine is quickly ready to intervene following a new failure of it.
    The invention aims to improve the performance of the ASI machine as described in EP 1,533,884 and to considerably increase the electrical power that can
    BE2019 / 5571 provide the kinetic energy accumulator beyond the maximum power that the accumulator of the ASI machine from EP 1.533 can provide. 884 in order to be able to guarantee a wider power range and greater flexibility of use of a higher output power combined with a reduced autonomy, for example this autonomy being sufficient for certain applications such as digital data storage centers or various processes that can stop in seconds without harming users.
    This objective is envisaged without however wanting to affect the advantages of the machine of EP 1.5233.884, therefore while respecting the reduced size of the kinetic energy accumulator of this ASI machine.
    This objective is achieved by replacing the qriffes rotor of the ASI machine of EP 1,533,664 with a rotor of the same size and more conventional architecture of an alternator rotor, that is to say provided of an iron core with a certain number of poles delimited by longitudinal notches distributed around the circumference of the core which, for each pole, is provided with a winding wound in the notches around the pole concerned, but dimensioned in such a way that the cumulative width of all of the poles in their narrowest part is at least equal to the cumulative width of all of the notches in their widest part, preferably that the minimum cumulative width of all of the poles is at least double the maximum cumulative width of all the notches.
    BE2019 / 5571
    By this atypical architecture of the rotor, the active area of the poles is increased at the same time as the surface of the notches in which the active copper conductors are housed is reduced. This increases the section of the polar cores compared to the section of the notches which contain the copper, the section of the poles being the active surface which intervenes for the electromagnetic coupling between the drum and the rotor of the accumulator in order to maintain a longer sufficient torque to drive the synchronous machine in its alternator function, even for powers significantly higher than those obtained in the case of the claw rotor.
    The rotor is specially designed to create a lot of electromagnetic losses in the drum in order to create a greater torque between the drum and the rotor, without worrying about achieving a beautiful sinusoidal distribution of the induction in the air gap and therefore to achieve a high power kinetic energy accumulator capable of driving a higher power alternator, even if it means reducing the autonomy of the machine below 12 seconds for the very large powers of the load in the event of a network failure, which is completely acceptable for certain applications where the autonomy can be reduced in favor of a higher power.
    In fact, because the surface of the notches has been reduced in favor of the active section of the poles, it will be necessary to pass a very large current through the conductors of the rotor coils to pass a large magnetic flux through the poles for the very high powers without risking destroying the windings by rapid heating
    BE2019 / 5571 of these, which can limit the time during which this high power can be maintained.
    Because of the more pronounced coupling between the drum and the rotor due to the increased active cross section of the poles, the coupling will be maintained longer for powers comparable to those obtained with an energy accumulator with a claw rotor.
    In the case of the claw rotor, the coupling will for example be lost as soon as the speed of the drum has dropped below 1700 rpm for a rotor speed of 1500 rpm. There is therefore a kinetic energy corresponding to a speed difference of 200 rpm which is unused.
    In the case of the invention on the other hand, the coupling will remain active longer up to 1500 rpm, which gives better use of the kinetic energy stored in the drum below 1700 rpm and therefore autonomy longer.
    In this way, an UPS machine can be produced which, instead of the machine known from EP 1,553,884, is characterized by greater autonomy, but which also makes it possible to couple the new energy accumulator with an additional synchronous machine. high power, for example double power, to protect users, even if it means reducing the autonomy during which this double power can be protected.
    An experimental UPS machine according to the invention has been produced showing surprising improved performance
    BE2019 / 5571 compared to the 1SI 1,533,884 ASI machine with a claw rotor of the same size:
    a remarkable increase in torque and stored energy thanks to the new rotor model;
    a significantly shorter response time to reach a given power;
    significantly higher power obtained for the new rotor after a given delay;
    increased autonomy from 5 to 20% at all the powers and full powers two to three time superior; a larger area of use in terms of
    powers at the output of the machine;
    an almost constant level of available energy for the entire range of powers in the field of use.
    In addition, the manufacture of the new rotor is of more conventional construction and is therefore less expensive than the manufacture of the claw rotor;
    the new rotor reduces the risks of residual magnetization of the machine shaft and consequently its harmful effects on the life of the bearings (no axial coil).
    The stator of the Pony motor is preferably produced in the form of a Gram ring with a toroidal winding which takes up less space and makes it possible to produce an accumulator of kinetic energy with a relatively short bulk.
    BE2019 / 5571
    The invention also relates to a rotor for an energy accumulator of an ASI machine and an accumulator equipped with such a rotor, which comprises an iron core with a number of poles delimited by longitudinal notches distributed around the circumference the core which, for each pole, is provided with a coil wound in the notches around the pole concerned and whose cumulative width of all of the poles in their narrowest part is at least equal to the cumulative width of all of notches in their widest part, preferably the cumulative width of all the poles in their narrowest part is at least twice the width of all the notches in their widest part.
    The invention also relates to the use of such a rotor in a kinetic energy accumulator of an ASI machine, the energy accumulator being initially intended to operate with a claw rotor, the accumulator essentially comprising:
    a carcass;
    a main shaft rotatably mounted in the carcass and being coupled with the synchronous machine;
    a hollow coaxial drum which can rotate freely around the main axis and independent of it;
    a motor, called a Pony motor, to start the drum up to a certain speed given when starting the UPS to accumulate kinetic energy in the drum;
    the rotor being installed in place of the claw rotor on the main shaft in a coaxial manner with the drum and with the same size, the rotor coils being connected with an exciter to produce a
    BE2019 / 5571 electromagnetic coupling between the drum and the rotor in the event of a network failure in order to recover the kinetic energy stored in the drum in order to drive the synchronous machine when a DC electric current is sent to the rotor coils by the through the exciter.
    In order to better understand the object of the present invention, a practical and preferred configuration of a kinetic energy accumulator is revealed below on the basis of the figures appended. These figures illustrate the following:
    FIG. 1 schematically represents an electricity network provided with a UPS machine with a kinetic energy accumulator according to the invention;
    2 shows a scale greater than a cross section of the ASI machine indicated by the arrow F2 in Figure 1;
    Figure 3 shows in side view the rotor F3 indicated in Figure 2;
    Figure 4 shows the section indicated by line IV-IV in Figure 3;
    FIG. 5 shows, in comparison with FIG. 4, a conventional rotor of an alternator of the same number of poles;
    FIG. 6 shows a comparison between the graph of the available energy as a function of the output power for an ASI machine according to the invention and for an ASI machine according to EP 1,533,884 of the same scope and in which replaced the claw rotor by a rotor according to the invention;
    BE2019 / 5571 Figures 7 and 8 show the same comparison but then for the autonomy curves as a function of the power for the two machines, respectively for the output power as a function of the differential speed between the drum and the main axis 50 msec after excitation;
    FIG. 9 represents another electrical network according to the invention;
    10 shows a section like that of Figure 4 for another embodiment of the core of a kinetic energy accumulator rotor according to the invention.
    FIG. 1 schematically represents an urban or industrial electrical network 1, supplying electrical energy to a sensitive load 2 of a site, the load 2 being constituted by all the users in a factory or in a data center and needing to be protected by an uninterruptible power supply machine, called ASI machine 3, which must intervene to supply load 2 in the event of a network failure 1.
    In the example of FIG. 1, the load 2 is connected to the network 1 via a three-terminal inductor 4, that is to say with an input terminal 4a connected to the network 1 via an input circuit breaker 5, an output terminal 4b connected to the load 2 by means of an output circuit breaker 6 and an intermediate terminal 4c to which the ASI machine 3 is connected.
    Choke 4 limits the current supplied by the ASI machine to the network in the event of a network 1 failure in order to protect the load
    BE2019 / 5571 of a too strong voltage drop and a significant power demand in the first moments after the network failure 1 and before the opening of the circuit breaker 5.
    In order to allow maintenance work on the ASI 3 machine, a bypass link 7 with a bypass circuit breaker 8 allows the ASI 3 machine to be isolated in combination with the opening of the circuit breakers 5 and 6.
    As illustrated in FIG. 2, the ASI machine 3 mainly consists of a synchronous machine 9 with low internal impedance and of a kinetic energy accumulator 10 according to the invention, which are mounted on a rotary main shaft 11; the latter being mounted in a carcass 12 by means of bearings 13.
    The main shaft also carries a flywheel 14.
    The synchronous machine 4 can operate as a motor or as an alternator and consists in a known manner of a rotor 15 mounted on the main shaft surrounded by a stator 16 and of an exciter 17 with a rotor 17a connected with the rotor 15 and a stator 17b which can be connected to an external electrical source to control the operation of the synchronous machine 9.
    The accumulator 10 comprises a hollow accumulator drum 18 made of steel that can rotate freely around the main axis 11 and is independent of the latter by means of bearings 19 mounted on the main shaft 11.
    BE2019 / 5571
    Inside the drum 18 a coaxial rotor 20 is fixed on the main shaft 11.
    The rotor 20 consists of a mainly cylindrical steel core with a number of poles 22 delimited by radial notches 23 parallel to the main axis 11. The notches have a maximum width A as shown in Figures 4, the notches 23 being distributed uniformly around the circumference of the core 21. The poles 22 have a minimum width B as shown in FIG. 4 which represents the active width of these poles.
    Each pole 22 is provided with a coil 24 in the form of an electric copper conductor which is wound in the notches 23 around the pole 22 concerned.
    When a current is sent into the coils 24, the poles become magnetic poles 22 North and South to form an electromagnetic coupling between the rotor 20 and the drum 18.
    In the case of FIG. 4, the rotor 20 is an eight-pole rotor, although the number of poles may be different.
    The accumulator 10 is provided with an exciter 25 with a rotor 25a which is fixed on the main shaft 11 and which is electrically connected with the windings 24 of the rotor 20 of the accumulator 10 and with a stator which can be powered by a external electrical source to control the behavior of the accumulator 10.
    BE2019 / 5571
    The accumulator 10 also includes an electric motor, called a Pony motor 26, made to start the drum 18 up to a certain speed when the ASI machine 3 is started and to accumulate kinetic energy in the drum 18.
    The Pony motor is preferably a Gram ring known as described in EP 1,533,884 with a toroidal winding connected to an external frequency converter not shown.
    The invention is specifically characterized by the distribution between the width A and the width B, or between the maximum width of the notches 23 and the active width of the poles 22, the totality of the minimum widths of all the poles 22 being preferably at least equal to all of the maximum widths of the notches 23 in the case of the invention illustrated in FIG. 4.
    Such an architecture is atypical if we compare it with the architecture of a conventional rotor of an alternator with the same span and the same number of poles as shown in FIG. 5. Such a conventional rotor is for example known from the application EP 2,989,713, although for a machine with a completely different configuration than that of the present invention.
    This conventional rotor of FIG. 5 is dimensioned with a completely different relationship between the width C of the notches and the active width D of the poles, in order to be able to operate continuously.
    By comparing Figures 4 and 5 we realize that the flow passage area in zone B is much more
    BE2019 / 5571 greater in the case of the rotor 20 according to the invention of FIG. 4 than in the zone D of the conventional rotor of FIG 5. However, the power which can be obtained in an energy accumulator is, all things remaining equal, directly proportional to this surface.
    On the other hand, the space (the section) available in the notches 23 for the windings 24 is approximately 2 to 3 times less than that (in the case of the invention in comparison with the rotor conventional.
    To obtain the same number of ampere-turns in the coils 24, and consequently the same induction in the poles 22, in the two aforementioned cases, it will be necessary, taking into account the reduction in section of the notches, a current two to three times higher in the excitation coils of the rotor 20 of FIG. 4, consequently, according to the RI 2 law, an excitation power from 4 to 9 times greater dissipated in a coil 24 of reduced volume.
    A similar comparison of the flow passage surfaces can be made between the rotor 20 according to the invention and the claw rotor which is the subject of patent EP 1,533,884 and having the same span. In the case of the claw rotor, the flux passage surface is of the order of 3 to 4 times less than the corresponding surface of the rotor 20 according to the invention and the ampere-turns per coil barely 10 to 20% greater to those of the rotor 20 of the invention, under the same current density conditions. Also taking into account the partially zero sequence nature of the claw rotor generating a flow variation in the air gap relative to the rotor according to the invention of the order of 30 to 40% lower,
    BE2019 / 5571 it follows that the torque and therefore the power obtained are ultimately of the order of 3 to 4 times greater in the case of the invention.
    The use of the ASI 3 machine is explained below.
    In normal operation, that is to say without cutting the network 1, the circuit breakers 5 and 6 are closed and the circuit breaker 8 is open.
    The synchronous machine 9 is supplied by the network and operates as a motor to drive the main shaft 11 at a given speed of 1500 rpm for example, corresponding to the frequency of the network 1. The rotor 20 of the accumulator 10 15 and the rotors 17a and 25a of the exciters 17 and 25 therefore rotate at this same speed.
    The drum 18 is maintained at a speed higher than the speed of the main shaft 11, typically between 1900 and 20 3000 rpm, to accumulate sufficient kinetic energy to support the load 2 in the event of a network cut 1 with a desired autonomy of for example 12 seconds.
    The drum speed is adjusted according to the load by means of the Pony 26 motor and its frequency converter. If the load 2 increases, immediately the speed of the drum 18 is increased in order to be able to face a fault in the network 1 with sufficient energy.
    The ASI machine 3 also plays the role of network conditioner 1 by its combination with the inductor 4, the low impedance of the synchronous machine 9 and the flywheel inertia.
    BE2019 / 5571
    It constitutes a filter vis-à-vis all short-term disturbances which do not exceed 60 to 80 ms which would come on the network 1 as well as a filter vis-à-vis the harmonics which would be present on the voltage of the load 2 or the mains voltage.
    When a more serious failure of network 1 is detected, for example when network 1 disappears altogether or if there is a too strong voltage drop, the control system of the ASI machine opens the input circuit breaker 5 immediately to avoid that the synchronous machine 9 must supply the network 1 in addition to the load 2. In fact, in the event of a breakdown (generally distant from the input of the UPS), the network 1 presents a considerable load for the UPS, that the latter would not be able to maintain very long on a network 1.
    The choke 4 is there to limit the importance of the current that can be returned in the network 1 and to reduce the level of the harmonics coming from the network towards the load and vice versa.
    As soon as the network fault 1 is detected and the input circuit breaker 5 is open, the transfer of energy from the drum 18 is initiated and simultaneously a DC current is injected into the exciter 25, which will produce an AC voltage transformed into current DC by a rectifier not shown in the figures.
    This establishes an electromagnetic coupling between the drum 18 and the main shaft 11, which will maintain the speed of the synchronous machine 9 at around 50 Hz and will provide power to users without disturbance.
    BE2019 / 5571
    The current that is sent to the exciter 25 acts as an important lever, since with a few amps we can control a considerable power through a small exciter 25.
    The kinetic energy stored in the drum 18 with a speed relative to the main shaft of 1500 rpm for example at full power is used to drive the synchronous machine 9 in its alternator function to supply the load 2. As the kinetic energy decreases in the absence of the network, the speed of the drum 18 decreases and approaches more and more the speed of the main axis until the moment when the electromagnetic coupling between the drum and the rotor 20 of accumulator 10 becomes insufficient to continue driving the synchronous machine 9.
    The performance of the ASI machine according to the invention is clearly better than in the UPS with a claw rotor according to EPI. 533,884 of the same size, as can be seen from the experimental performance diagrams in FIGS. 6 to 8 .
    FIG. 6 represents the energy storage capacity of the ASI machine 3 expressed in MJ as a function of the output power of the ASI machine 3 to be delivered to the load 2.
    The accumulated energy expresses the product of autonomy and power of the machine type
    3.
    ASI
    In the diagram in FIG. 6, it can be seen that for a machine with a nominal power of
    800 kW performed according to
    BE2019 / 5571 patent EPI.533.884, the available energy capacity of this machine is increased from 6 to 8 MJ by the simple and only replacement of the claw rotor by the rotor forming part of the invention, all other things remaining equal.
    This means that in the first case the accumulated energy of 6 MJ gives an autonomy of 7.5 sec and in the case of the invention an autonomy of more than 10 sec.
    With the old claw rotor, we realize that as the output power increases above 400 kW the available energy decreases and that it is practically impossible to supply more than 800 kW.
    With the new rotor 20, it is possible to reach powers beyond the maximum power of the claw rotor, and even more than to double this power in the case of FIG. 6.
    Obviously, a synchronous machine 9 of suitable power will be required.
    In addition, the accumulated energy is practically constant over the whole range of output powers, which is more practical for characterizing the ASI 3 machine with a single parameter like an 8.2 MJ machine, making it possible to easily deduce l autonomy depending on the power of the load 2 to be protected, if necessary giving an autonomy of 16.4 seconds for a load of 500 kW, an autonomy of
    8.2 seconds for a load 2 of 1000 kW and 5.5 sec for 1500 kW.
    BE2019 / 5571
    Although at full power, for some applications, it does not reach a range of 12 seconds, a shorter range is sufficient.
    We thus obtain a greater field of use with ASI machines of high power but low autonomy. This means that for the same price of a machine with medium power and great autonomy, one can have a machine with double or even triple power, and with shorter autonomy, which was not currently possible.
    The difference between the curves of Figure 6 can be explained by the fact that with the old rotor the electromechanical coupling between the drum 18 and the claw rotor is lost when the speed of the drum 18 decreases under 1700 rpm with a speed of 1500 rpm for the rotor, in comparison with the atypical rotor 20 according to the invention with which the coupling is held up to a drum speed of almost 1500 rpm.
    Figure 7 shows the diagram of the autonomy of the ASI machine in both cases.
    It can be seen that the ASI 3 machine according to the invention has better autonomy than the old machine in the whole range of powers thereof and still retains an acceptable autonomy for certain applications for higher powers.
    FIG. 8 shows the output power of the ASI machine 3 as a function of the relative speed between the drum 18 and the
    BE2019 / 5571 rotor on the main shaft 11, 50 msec after the application of an intermediate voltage of 300VDC on the exciter 25.
    If we apply a voltage of 300VDC when the drum 18 rotates 1000 rpm faster than the main shaft 11, we see that after 50 msec we obtain a torque with the claw rotor which gives a power of about 500 KW, while with the new rotor we already get a power of 1150 kW.
    For a relative speed at full power of 1500 rpm, we go from an available power of 460 kW to 1120 kW. This means that after 50 ms we will have reached a power which will avoid too rapid a speed drop and an output of the frequency tolerance (generally of -1 Hz).
    If the autonomy of the ASI machine 3 is not sufficient to cover the time that a cut in the network 1 lasts, it is possible to add a generator 27 as shown in Figure 9 by means of a source inverter consisting of two circuit breakers 28 and 29.
    The core 21 shown in FIG. 10 is a core 21 of an alternative rotor 20 according to the invention which differs from the core of the rotor 20 of FIG. 4 in that the notches 23 are not distributed uniformly around the core and that therefore the width B of the poles 22 is different according to their angular position, with a configuration integrating wide poles 22 ', having a minimum width B', and narrow poles 22, having a minimum width B.
    BE2019 / 5571
    In Figure 10, the poles 22 are organized as follows:
    the poles 22 have to alternately be N & Her the per: Lphérie of rotor 20 ƒ the poles wide 22 ' must be multiples of of them and
    alternately N & S at the periphery of the rotor 20;
    the narrow poles 22 must be multiple of two and alternately N & SoùS & Nàthe periphery of the rotor 20;
    the sum of the widths B 'and B of all the poles 22' and 22 at their narrowest point must be at least equal to and preferably clearly greater than the sum of the widths C of all the notches 23 at their place the larger, which in the case of Figure 10 is located on another diameter.
    Such an organization of the poles can be envisaged with the aim of modifying the torque characteristic as a function of the relative speed between the rotor 20 and the drum 18.
    It is obvious that the invention is in no way limited to the embodiments described above, but that numerous modifications can be made to the kinetic energy accumulator described above without departing from the scope of the invention as defined in the claims
    权利要求:
    Claims (17)
    [1]
    1.- ASI (Uninterruptible Power Supply) machine, comprising a synchronous machine (9) coupled to a kinetic energy accumulator (10) which essentially comprises:
    a carcass (12);
    a main shaft (11) rotatably mounted in the carcass (12) and being coupled with the synchronous machine (9);
    a coaxial hollow drum (18) which can rotate freely around the main axis (11) and independent of it;
    an electric motor (26), called a Pony motor, for launching the drum (18) up to a certain speed given when starting the UPS to accumulate kinetic energy in the drum (18);
    a rotor (20) fixed on the main shaft coaxially with the drum (18) and provided with coils (24) connected with an exciter (25) to achieve an electromagnetic coupling between the drum (18) and the rotor (20) in the event of a network failure (1) in order to recover the kinetic energy stored in the drum (18) in order to drive the synchronous machine (9) when an electric current is sent into the coils (24) of the rotor (20) via the exciter (25); characterized in that:
    the rotor (22) of the kinetic energy accumulator (10) is a rotor (20) having an iron core (21) with a certain number of poles (22) delimited by notches (23) parallel to the main shaft (11) and distributed around the circumference of the core (21) which, for each
    BE2019 / 5571 pole (22), is provided with a winding (24) wound in the notches (23) around the pole (22) concerned;
    the cumulative width of all of the poles (22) in their narrowest part is at least equal to the cumulative width of all of the notches (23) in their widest part.
    [2]
    2. ASI machine according to claim 1, characterized in that the cumulative width of all of the poles (22) in their narrowest part is at least twice the width of all of the notches (23) in their part the widest.
    [3]
    3. ASI machine according to claim 1 or 2, characterized in that the rotor (20) of the kinetic energy accumulator (10) is such that it allows an instantaneous current density at the windings (24) which is greater than 8 Amp / mm 2 , preferably greater than 10 Amp / mm 2 .
    [4]
    4. ASI machine according to claim 3, characterized in that the rotor (20) of the kinetic energy accumulator (10) is such that it allows it to withstand without failing, ie without temperature rise prejudicial to the winding, an instantaneous current density at the windings which is greater than 8 Amp / mm 2 , preferably greater than 10 Amp / mm 2 for a duration of at least twelve seconds, preferably for at least 16 seconds, better still during minus 24 seconds.
    [5]
    5.- ASI machine according to any one of the preceding claims, characterized in that the exciter (25) comprises a stator (25b) and a rotor (25a) which is fixed on
    BE2019 / 5571 the main shaft (11) and that the stator coils (25b) are connected to a source of alternating AC electrical current and / or DC direct current.
    [6]
    6. - ASI machine according to any one of the preceding claims, characterized in that the stator of the Pony motor (26) is produced in the form of a Gram ring.
    [7]
    7. - ASI machine according to claim 6, characterized in that the Gram ring (26) is connected to a variable frequency power supply.
    [8]
    8.- ASI machine according to one preceding, characterized in made of steel.
    any of the claims what the drum (18) is
    [9]
    9. - ASI machine according to any one of the preceding claims, characterized in that the ASI machine has an energy capacity of at least 8 MJ in a range of output power between 200 kW and 1400 kW.
    [10]
    10. - ASI machine according to claim 9, characterized in that the ASI machine has an energy capacity of at least 8 MJ which remains mainly constant in the range of output powers between 200 kW and 1400 kW.
    [11]
    11. - ASI machine according to any one of the preceding claims, characterized in that the ASI machine (3) is connected to the intermediate terminal (4c) of a choke (4) with three terminals which connect the load (2) to the network (1).
    BE2019 / 5571
    [12]
    12.- ASI machine according to claim 11, characterized in that the network (1) is connected to the input terminal (4a) of the inductor (4) with three terminals in parallel to a generator (27) which is put into service from the moment when the network (1) is out of service for a determined time of more than a few seconds.
    [13]
    13. - Rotor for an energy accumulator of an ASI machine, characterized in that the rotor (22) comprises an iron core (21) with a certain number of poles (22) delimited by notches (23) parallel to the axis of the rotor (20) distributed around the circumference of the core (21) which, for each pole (22), is provided with a coil (24) wound in the notches (23) around the pole (22) concerned and whose cumulative width of all of the poles (22) in their narrowest part is at least equal to the cumulative width of all of the notches (23) in their widest part.
    [14]
    14. - Rotor according to claim 13, characterized in that the cumulative width of all of the poles (22) in their narrowest part is at least double the width of all of the notches (23) in their part the wider.
    [15]
    15. - Rotor according to claim 13 or 14, characterized in that the poles (22) all have the same width.
    [16]
    16.- Rotor according to claim 13 or 14, characterized in that the poles (22) have a different width according to their angular position, comprising wide poles (22 ') and narrow poles, which are organized as follows:
    BE2019 / 5571
    - the poles (22) must be alternately N & S at the periphery of the rotor (20);
    the large poles (22 ') must be multiple of two and alternately N & S at the periphery of the rotor (20);
    the narrow poles (22) must be multiple of two and alternately N & SoùS & Nat the periphery of the rotor (20)
    [17]
    17.- Use of a rotor according to any one of claims 13 to 16, in a kinetic energy accumulator of an ASI machine, the kinetic energy accumulator (10) being intended to operate with a rotor with claws, the accumulator essentially comprising:
    a carcass (12);
    a main shaft (11) rotatably mounted in the carcass (12) and being coupled with a synchronous machine (9);
    a coaxial hollow drum (18) which can rotate freely around the main axis (11) and independent of it;
    a motor (26), called a Pony motor, for launching the drum (18) up to a certain speed given when starting the UPS to accumulate kinetic energy in the drum (18);
    the rotor being fixed in place of the claw rotor on the main shaft in a coaxial manner with the drum (18) and with the same size, the coils (24) of the rotor (20) being connected with an exciter ( 25) to achieve an electromagnetic coupling between the drum (18) and the rotor (20) in the event of a network failure in order to recover the kinetic energy stored in the drum (18) in order to drive the synchronous machine (9)
    BE2019 / 5571 when an electric current is sent to the coils (24) of the rotor (20) via the exciter.
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    同族专利:
    公开号 | 公开日
    EP3878084A1|2021-09-15|
    BE1026772B1|2020-06-09|
    DE19798732T1|2022-02-24|
    BE1026773A1|2020-06-05|
    BE1026772A1|2020-06-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1364072A|1963-05-07|1964-06-19|Prec Mecanique Labinal|Improvements made to rotating machines, in particular retarders, eddy currents|
    JPH05115169A|1991-10-21|1993-05-07|Sawafuji Electric Co Ltd|Brake unit|
    EP1533884A1|2003-11-19|2005-05-25|KS Research, société anonyme|Kinetic energy storage|
    WO2014172737A2|2013-04-22|2014-10-30|Hitzinger Gmbh|Energy store and device for an uninterrupted supply of energy|
    EP2945263A2|2014-05-16|2015-11-18|KS RESEARCH, société anonyme|Uninterruptible power supply system|
    NL1021137C2|2002-07-23|2004-01-27|Fondel Finance B V|Support element for attachment to bone.|
    JP4693393B2|2003-11-19|2011-06-01|キヤノン株式会社|Developer supply device|
    法律状态:
    2020-08-13| FG| Patent granted|Effective date: 20200608 |
    优先权:
    申请号 | 申请日 | 专利标题
    BE20185785A|BE1026772B1|2018-11-08|2018-11-08|UPS Machine |PCT/IB2019/059252| WO2020095149A1|2018-11-08|2019-10-29|Uninterruptible-power-supply machine|
    DE19798732.4T| DE19798732T1|2018-11-08|2019-10-29|UNINTERRUPTIBLE POWER SUPPLY MACHINE|
    EP19798732.4A| EP3878084A1|2018-11-08|2019-10-29|Uninterruptible-power-supply machine|
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