• 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:
    The present invention constitutes a magnetic field circuit 1 in the form of a transformer iron core structure using a silicon steel sheet or the like. On one side of the iron core, that is, the primary leg, a coil, which is a magnetic field generating unit 2 for generating magnetic flux by receiving external power, is wound. The secondary leg, which is the other leg, is configured to wind the superconducting coil 3 made of a high temperature superconductor so that the magnetic flux generated at the primary side can be bridged. Both ends of the secondary side of the superconducting power supply having a transformer structure are coupled in parallel with the superconducting load 6 to receive the current generated from the power supply. A first heater trigger switch 4 having a cryogenic heater wound around a portion of the secondary coil of the superconducting power supply device is attached, and a high temperature superconducting short circuit 7 is connected in parallel between the two wires connecting the superconducting coil and the superconducting load. Thus, two superconducting closed loops were formed. A stationary heater trigger type high temperature superconducting power supply is constructed by providing a second heater trigger switch 5 in the middle of the short circuit line 7.
    公开号:KR20020091322A
    申请号:KR1020010030289
    申请日:2001-05-31
    公开日:2002-12-06
    发明作者:한태수；고태국；김호민
    申请人:대한민국(관리부서:산업자원부 기술표준원장)；
    IPC主号:
    专利说明:

    HEATER TRIGGERED TYPE HIGH TEMPERATURE SUPERCONDUCTING POWER SUPPLY}
    [9] The present invention relates to a device for supplying power to a superconducting load, and more particularly, to a high temperature superconducting power supply of a stationary heater trigger type using a superconductor switch of a heater trigger type.
    [10] Representative superconducting loads include nuclear magnetic resonance imaging (MRI), which is currently used in the medical field, superconducting magnetic energy storage (SMES), and superconducting motors and superconducting generators, which are rotating devices. Superconducting magnets are used to obtain power and are supplied by an external power supply. When the power is supplied from the outside, the phase conduction power supply is mainly used, and the size of the power supply is large. Moreover, the connection between the phase conductor and the superconductor exists when connecting with the superconducting magnet installed inside the low temperature tank, which causes electrical resistance. And it generates heat by this electric resistance. This not only results in heat loss, but also results in compromised system stability.
    [11] In order to solve this problem, research and development to replace the superconducting power supply with the superconducting power supply has been continued. As a result of this effort, the superconducting current type and the superconducting load are connected to the superconducting wire. System has been developed by the inventors.
    [12] However, since the superconducting current generator uses a low temperature superconductor, an expensive liquid helium is required as the refrigerant. Therefore, the design and manufacture of the cooling system is difficult and economical.
    [13] In this field, as a result of the development of high temperature superconductor, superconducting materials with gradually increasing temperature disappearing of superconductor have been developed. In 1987, the superconducting phenomenon occurred at 92K, which is higher than liquid nitrogen (77K), at the University of Houston, USA. The discovery of BiSrCaCuO and TiBaCaCuOr series oxide superconductors, which led to the discovery of the generated YBaCuO, provided the foundation for realizing a superconducting power supply with excellent economical efficiency using liquid nitrogen as a refrigerant, but to utilize the high temperature superconductor in superconducting power supplies. Since the switching technology for current pumping has not been developed, a superconducting power supply using a high temperature superconductor has not been developed yet.
    [14] A key element of the high temperature superconducting power supply is the superconducting switch. The superconducting switch is a device that facilitates the opening and closing of the superconducting circuit by serving to transfer the superconducting state to the phase conducting state. Looking at the shape of the superconducting switch, there are a rotating type that transmits a magnetic flux above a critical density generated by the rotor to turn on / off the superconducting circuit and a stationary type that generates a phase transition of the superconducting circuit by applying a current by winding a heater to the superconductor.
    [15] The present invention reduces the loss due to Joule heat generation at the junction between the power supply and the superconducting load in supplying power to the superconducting load consisting of a superconductor without resistance, and to a superconducting power supply that operates in a cryogenic environment such as a superconducting load. It is to provide a stationary heater trigger type superconducting power supply device which is economical since the use of a high temperature superconductor can be used as a refrigerant and is simple in its structure without a rotating part.
    [1] 1 is a block diagram of a stationary heater trigger type high temperature superconducting power supply of the present invention.
    [2] Figure 2 is a schematic diagram of a stationary heater trigger type high temperature superconducting power supply for explaining the present invention.
    [3] 3 is an operation explanatory diagram of a stationary heater trigger type high temperature superconducting power supply for explaining the present invention.
    [4] <Description of the symbols for the main parts of the drawings>
    [5] 1: magnetic field circuit of transformer core structure 2: magnetic field generator
    [6] 3: superconducting coil 4: first heater trigger switch
    [7] 5: second heater trigger switch 6: superconducting load
    [8] 7: high temperature superconducting short circuit
    [16] In order to achieve the above object, the stationary heater trigger type high temperature superconducting power supply according to the present invention includes an electromagnet for supplying magnetic flux and two heaters wound on the superconductor to perform a superconducting switch function, and magnetic flux generated from the electromagnet to the superconducting coil. In order to control the iron core and two heaters made of silicon steel, etc., to control the power supply to the electromagnet, the controller unit controlling the superconducting power supply and the electric current generated from the superconducting power supply are generated. It consists of superconducting load.
    [17] As shown in the structural diagram of the stationary heater trigger type high temperature superconducting power supply device of FIG. 1, the configuration of the present invention comprises a rectangular magnetic circuit 1 made of silicon steel or the like, and the magnetic field is formed on one side of the square, that is, one leg (primary side). Coils are generated to generate magnetic flux by receiving external power from the generator 2, and a superconducting coil 3 made of a high temperature superconductor is wound on the other leg (secondary side). Both ends of the superconducting coil are connected to the superconducting load 6 to receive a current generated from the superconducting coil to generate a magnetic field. A short-circuit wire made of a high temperature superconductor such that a first heater trigger switch 4 having a cryogenic nichrome wire wound around a portion of the superconducting coil is attached, and two superconducting closed loops are formed between the two lines connecting the superconducting coil and the superconducting load. 7) and install the second heater trigger switch (5) in the middle of the short circuit (7).
    [18] An operation process of the stationary high temperature superconducting power supply having the above configuration will be described in detail with reference to FIGS. 1, 2, and 3.
    [19] First, the present pumping principle of the present invention will be described.
    [20] For ease of explanation, the configuration of FIG. 1 is simplified and displayed as shown in FIG. 2.
    [21] As shown in FIG. 3, an external power source is applied to an electromagnet wound on a primary iron core of a transformer to generate magnetic flux. The generated magnetic flux is connected with the superconducting coil on the secondary side by the iron core to generate a current in the superconducting coil. It is assumed that the generated current flows through the superconducting load (hereinafter referred to as loop 1) (S1), and to the heater 1 (hereinafter, the first heater trigger switch) 4 in the superconducting coil 3 under the control of the controller. When the current is supplied, the heated portion becomes a phase conductor and resistance occurs in loop 1, and current I flows through the superconducting load and the superconducting short circuit 5 (hereinafter referred to as loop 2) (S2)
    [22] Then, when the magnetic field generator 2 is driven to apply magnetic flux to the loop 1 (S3) and the power supplied to the first heater trigger switch 4 is cut off (S4), the first heater trigger switch 4 When the refrigerant is cooled by the refrigerant to be in a superconducting state again, when the power supply to the electromagnet is cut off, a magnetic flux change occurs in the loop 1, and finally, the organic electromotive force of -d / Dt is induced in the superconducting coil 3. The current is generated by this induced electromotive force and occurs in loop 1 by the current increased by the applied total flux (ΔI). At this time, the initial current flows in the loop 2 as it is.
    [23] Next, when power is supplied to the heater (hereinafter referred to as the second heater trigger switch) 5 wound on the short circuit 7, the heating portion of the short circuit becomes a phase conductor, a resistance is generated, and the current flowing through the loop 2 (I ) Flows to loop 1.
    [24] In loop 1, an increased current ΔI is added to the current I transferred in loop 2, that is, I + ΔI flows to perform current pumping (S5), and then power is supplied to the first heater trigger switch 4. When the heated portion is switched to the phase conduction and the power is cut off to the second heater trigger 7, the short circuit is restored to the superconducting state, and the current is transferred to the loop 2 and flows (S6). This shows the flow of current in a superconducting closed loop without resistance, which shows that the current always flows in the smaller direction.
    [25] By repeating the above series of steps, the current supplied to the superconducting load can be increased and eventually the current will increase stepwise.
    [26] Next, the configuration of the stationary heater trigger type high temperature superconducting power supply apparatus of the present invention will be described in detail with reference to FIG. 1.
    [27] The stationary heater trigger type high temperature superconducting power supply device of the present invention stacks a silicon steel sheet to produce an iron core which is a magnetic circuit (1), and a copper wire having a diameter of 1.1 mm is wound 424 times on a bobbin made of bakelite on the primary side of the iron core to have a magnetic field. The generating part 2 was installed. The secondary leg, which is the core of the superconducting power supply, is wound 10 times with BSCCO (YBaCuO, BiSrCaCuO, TiBaCaCuOr-based oxides), which is a high-temperature superconducting wire coated with silver (Ag) having a width of 4 mm and a thickness of 0.3 mm. ) Was connected to the superconducting load (6).
    [28] The superconducting load in this embodiment is the same material as the superconducting coil, and the number of turns is 115 turns. The inner diameter is 40 mm and the outer diameter is 75 mm.
    [29] The first heater trigger switch 4 attached to the superconducting coil 3 is an alloy of nickel-chromium, has a diameter of 0.203 mm, uses a resistance of 70 (Ω), supplies current to the superconducting load 6, and superconducting load ( 6) The output line of the superconducting coil which forms a closed circuit is a superconductor formed integrally with the superconducting coil, and the short circuit (7) constituting the parallel closed circuit at both ends of this output line is also the same material as the superconducting coil and a certain portion of the superconducting coil ( In the present invention, a heater of the same material as the first heater trigger switch 4 is wound around the short circuit 7 in the middle portion) to form the second heater trigger switch 5.
    [30] Although not shown, it consists of a power supply of a heater trigger switch and a controller unit controlling a current supply to an electromagnet installed at a primary iron core.
    [31] As described above, the superconducting power supply device having the above-described structure charges the current to the superconducting load through a series of operating processes, and thus the structure is simple, and the stationary high temperature superconducting power supply device does not generate heat due to the connection between the superconducting load and the current inlet wire at room temperature Is realized,
    [32] The high temperature superconducting power supply device according to the present invention has a simple structure and can be used for multipurpose, and the superconducting load due to the occurrence of resistance loss and inflow of leakage heat by the junction between the phase conductor and the superconductor when supplying current to the superconducting load with the existing power supply device. By developing and supplying a superconducting power supply device that can eliminate inefficient operation and generate permanent power mode operation that can be operated continuously without additional power supply after generating power as required by superconducting load. Stabilizes the power supply of equipment that requires high magnetic fields such as magnetic resonance imaging (MRI) and is superconducting with a power supply device that is free from vibration and noise because it is economical to operate and maintain and has no rotating parts compared to the rotating magnetic superconducting power supply. It can contribute to the expansion of the use range of the power supply.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] An electromagnet which is a magnetic field circuit for generating a magnetic field;
    A superconducting coil generating current by linking with a magnetic field generated in the magnetic field circuit;
    An iron core of a transformer form a magnetic shield circuit between the electromagnet and the superconducting coil;
    Superconducting load receiving current from the superconducting coil;
    A control unit for controlling a stationary high temperature superconducting power supply for supplying power to the electromagnet and the heater trigger switch;
    A superconducting short circuit for shorting both ends of a superconducting coil output line made of a high temperature superconductor for connecting a superconducting coil and a superconducting load in a stationary high temperature superconducting power supply;
    A heating unit (first heater trigger switch) for heating a portion of the superconducting coil to transition from the superconducting state to the phase conducting state; And
    A stationary heater trigger type high temperature superconducting power supply device comprising: a heating unit (second heater trigger switch) for heating a portion of a short line to change from a superconducting state to a phase conducting state.
    [2" claim-type="Currently amended] The stationary heater trigger type high temperature superconducting power supply according to claim 1, wherein the superconducting coil, the superconducting load, and the superconducting short circuit are one of YBaCuO, BiSrCaCuO, and TiBaCaCuOr-based oxides.
    [3" claim-type="Currently amended] The stationary heater trigger type high temperature superconducting power supply device according to claim 1, wherein the heat generating unit is formed by winding a high temperature superconductor wire.
    [4" claim-type="Currently amended] The stationary heater trigger type high temperature superconducting power supply device according to claim 1, wherein the superconducting coil is formed by winding a superconductor coated with silver.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2001-05-31|Application filed by 대한민국(관리부서:산업자원부 기술표준원장)
    2001-05-31|Priority to KR1020010030289A
    2002-12-06|Publication of KR20020091322A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020010030289A|KR20020091322A|2001-05-31|2001-05-31|Heater triggered type high temperature superconducting power supply|
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