Superposed push-pull circuit
A push-pull circuit and capacitor technology, applied in electrical components, adjusting electrical variables, instruments, etc., can solve problems such as inability to meet high-voltage and high-power applications, and achieve the effect of eliminating bias magnetism, improving efficiency, and reducing current stress.
Inactive Publication Date: 2016-04-06
SHANGHAI INST OF SPACE POWER SOURCES
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Problems solved by technology
[0003] The purpose of the present invention is to provide a superimposed push-pull circuit, which reduces the voltage stress of the MOSFET in the circuit and the voltage stress and current stress of the rectifier diode, and transfers the leakage inductance energy of the power transformer to the load end to improve the efficiency of the power transformer. Improve the power level of the circuit so that it can be used in high-voltage and high-power applications in satellite power systems, and solve the problem that the existing superimposed push-pull power regulation topology cannot meet high-voltage and high-power applications
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[0024] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.
[0025] Such as figure 2 As shown, a superimposed push-pull circuit is used to supply power to the load R, especially in the high-voltage and high-power occasions of the satellite power system. The superimposed push-pull circuit includes: input power supply U in , its negative terminal is grounded; the energy storage inductor L, its input terminal is connected to the input power supply U in The positive terminal is connected; the power transformer T, the power transformer T includes the first tap 1, the second tap 2, the third tap 3 arranged on the primary side and the fourth tap 4, the fifth tap 5 arranged on the secondary side, The sixth tap 6, the output terminals of the energy storage inductor L are respectively connected to the second tap 2 and the fifth tap 5; the output filter capacitor C is connected in ...
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The invention discloses a superposed push-pull circuit. The circuit comprises an input power supply, an energy storage inductor, a power transformer, an output filter capacitor, a first MOSFET, a second MOSFET and a driving circuit, wherein a negative terminal of the input power supply is grounded; an input terminal of the energy storage inductor is connected to a positive terminal of the input power supply; the power transformer includes a first tap, a second tap, a third tap, a fourth tap, a fifth tap and a sixth tap; an output terminal of the energy storage inductor is connected to the second tap and the fifth tap respectively; the output filter capacitor is connected in parallel to a load, a positive terminal is connected to the first tap, the third tap, a fourth tap and a sixth tap respectively and a negative terminal is connected to a load of the input power supply; a drain electrode of the first MOSFET is connected to the first tap and a source electrode is connected to the load of the input power supply; a drain electrode of the second MOSFET is connected to the third tap and a source electrode is connected to the load of the input power supply; and the driving circuit is connected to a grid electrode of the first MOSFET and a grid electrode of the second MOSFET respectively. By using the circuit, stresses of a voltage and a current of a power device in the circuit are reduced and a problem that existing superposed push-pull power adjusting topology can not satisfy a high-voltage high power application occasion is solved.
Description
technical field [0001] The invention relates to the technical field of power regulation topology of a satellite power supply system, in particular to a superposition push-pull circuit. Background technique [0002] The power regulation module of the satellite power system converts the power emitted by the solar cell array according to certain technical requirements, adjusts it to the voltage required by the bus, directly supplies power to the load, and controls the charging and discharging of the battery to maintain the stability of the bus voltage of the satellite power system sex. As the bus voltage of the satellite power supply system is getting higher and higher, it brings great difficulties to the selection of power devices, especially the aerospace grade mosfet. At present, the highest voltage stress of the aerospace grade mosfet suitable for the satellite power supply system is only 250V in China. Therefore, in the satellite power system of the high-voltage bus, the ...
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IPC IPC(8): H02M3/337
CPCH02M3/337H02M3/33569
Inventor 彭方涛高科何小斌董宇陈海涛朱春晓
Owner SHANGHAI INST OF SPACE POWER SOURCES