• 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:
    A step-up converter for achieving a large DC-to-voltage ratio consisting of an asymmetric half-bridge AHB formed by the first active switch S1 and the diode D1, a half-bridge HB consisting of two series-connected active switches S2 and S3, a capacitor C1, two coils L1 and L2 , a positive El and a negative E2 input terminal to which the input voltage U1 is connected, a positive Al and a negative A2 output terminal to which the load LAST or the parallel circuit of the load LAST and a second capacitor C2 is connected. The asymmetric half-bridge AHB and the half-bridge HB can be formed by integrated modules, the half-bridge (HB) being driven by a half-bridge driver.
    公开号:AT517341A4
    申请号:T379/2015
    申请日:2015-06-15
    公开日:2017-01-15
    发明作者:Dipl Ing Dr Himmelstoss Felix
    申请人:Dipl Ing Dr Himmelstoss Felix；
    IPC主号:
    专利说明:

    Transformerless boost converter with high voltage ratio
    The invention relates to a step-up converter consisting of an asymmetrical half-bridge (AHB), formed from the first active switch (Si) and the diode (Di), a half-bridge (HB) consisting of two active switching devices (S2, S3) connected in series, a capacitor (Ci), two coils (Li, L2), a positive (El) and a negative (E2) input terminal at which the input voltage (Ui) is connected, a positive (A1) and a negative (A2) output terminal, at which the load (LAST) or the parallel circuit of the load (LAST) and a second capacitor (C2) is connected
    Step-up dividers serve to generate a higher DC voltage from a lower one. Many circuits have been published and patented. The circuit shown here consists of three active switching devices and one passive, two coils and one or more capacitors.
    The circuit is particularly suitable when high voltage ratios are required.
    The figures represent the circuit of the boost converter (FIG. 1) and the load of the boost converter (FIG. 2).
    The circuit will be explained with reference to FIG.
    In continuous operation of the circuit there are two modes. In the first mode, the first switch Si and the second active switch S2 are turned on. As a result, the input voltage Ui at the first coil Li and the capacitor voltage at the second coil L2, respectively positive to the corresponding coil and the current rises in this. In this case, energy is taken from the input voltage source Ui and the capacitor Ci. In the second mode, the two switches Si and S2 are turned off and the active switch S3 is turned on. As a result, the current of the first coil Li commutates in the diode Di and closes via the capacitor Q and S3 and the input voltage Ui. The current of L2 now flows into the load and closes via S3 and the capacitor Ci. Negative voltages are present at the two coils (the difference between the input voltage Ui and the capacitor voltage at coil Li, and the difference between capacitor voltage and output voltage U2 at coil L2.) As a result, the current in the two coils drops as well as their energy content Furthermore, energy is removed and the capacitor Ci is recharged.For the steady state and with ideal components, the voltage transmission ratio can be determined according to
    determine. Thus, the circuit has the same voltage ratio as two cascaded normal boost converter, but the component load is slightly different.
    The load can be connected directly (Fig. 2.b) or a capacitor C2 can be connected in parallel for smoothing (Fig. 2.a).
    The activation of the active switch takes place according to the prior art and will not be discussed further here. The regulation takes place either as voltage regulation of the output voltage or as current regulation. Here, the regulation of the current in the first coil is particularly recommended. Especially recommended is a two-position controller with hysteresis, sliding mode control or state controller.
    The task of raising a DC voltage is inventively achieved in that the first coil (Li) is connected to the positive input terminal (El), the second terminal of the first coil (Li) to the connection point between the positive terminal of the first active switch (Si) and the anode of the diode (Di) of the asymmetrical half bridge (AHB) is connected, the negative terminal of the first active switch (Si) being connected to the negative input terminal (E2), the cathode of the diode (Di) being connected to one terminal of the second Inductance (L2) and connected to the positive terminal of the capacitor (Ci), to the negative terminal of the capacitor (Q) the connection point between positive terminal of the third active switch (S3) and negative terminal of the second active switch (S2) of the half-bridge (HB), the second terminal of the second coil (L2) to the positive terminal of the second active switch (S2) and the positive output terminal (Al) is connected and the negative terminal of the third active switch (S3) is connected to the negative output terminal (A2) and the negative input terminal (E2).
    Furthermore, between the first (El) and the second (E2) input terminal another capacitor can be switched. The asymmetrical half bridges (AHB) and the half bridge (HB) can be formed by integrated modules and the half bridge (HB) can be controlled by a half bridge driver.
    权利要求:
    Claims (4)
    [1]
    Patentanspriiche
    1. step-up converter consisting of an asymmetric half-bridge (AHB), formed from the first active switch (Si) and the diode (Dj), a half-bridge (HB) consisting of two series-connected active switching devices (S2, S3), a capacitor ( Ci), two coils (Li, L2), one positive (El) and one negative (E2) input terminal to which the input voltage (Ui) is connected, a positive (A1) and a negative (A2) output terminal at which Load (LAST) or the parallel connection of the load (LAST) and a second capacitor (C2) is characterized in that the first coil (Li) is connected to the positive input terminal (El), the second terminal of the first coil (Lj) is connected to the connection point between the positive terminal of the first active switch (Si) and the anode of the diode (Di) of the asymmetrical half-bridge (AHB), the negative terminal of the first active switch (Si) being connected to the negative input terminal (E2) , the Cathode of the diode (Di) is connected to a terminal of the second inductance (L2) and to the positive terminal of the capacitor (Ci), to the negative terminal of the capacitor (Ci) the connection point between the positive terminal of the third active switch (S3) and the second terminal of the second coil (L2) is connected to the positive terminal of the second active switch (S2) and the positive output terminal (Al), and the negative terminal of the third active switch (S3) is connected to the negative output terminal (A2) and the negative input terminal (E2).
    [2]
    2. boost converter according to claim 1, characterized in that between the first (El) and the second (E2) input terminal another capacitor is connected.
    [3]
    3. boost converter according to claim 1 or 2, characterized in that the asymmetrical half bridge (AHB) and the half bridges (HB) are formed by integrated modules.
    [4]
    4. boost converter according to claim 1,2 or 3, characterized in that the half-bridge (HB) is driven by a half-bridge driver.
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    同族专利:
    公开号 | 公开日
    AT517341B1|2017-01-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3500170A|1967-11-20|1970-03-10|Telemecanique Electrique|D.c.-a.c. converters|
    EP0585077A1|1992-08-25|1994-03-02|General Electric Company|Power supply circuit with power factor correction|
    US20070230228A1|2006-03-31|2007-10-04|Hong Mao|Zero-voltage-switching DC-DC converters with synchronous rectifiers|
    AT522311B1|2019-07-02|2020-10-15|Fachhochschule Technikum Wien|Step-up converter with a large voltage ratio|
    法律状态:
    2021-02-15| MM01| Lapse because of not paying annual fees|Effective date: 20200615 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA379/2015A|AT517341B1|2015-06-15|2015-06-15|Transformer-free boost converter with high voltage ratio|ATA379/2015A| AT517341B1|2015-06-15|2015-06-15|Transformer-free boost converter with high voltage ratio|
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