TWO-STROKE BRIDGE VOLTAGE CONVERTER Russian patent published in 2015 - IPC H02M7/5387 

FIELD: electricity.

SUBSTANCE: invention is related to power conversion equipment and is a device that implements an energetic pulsed control method for power transmitted to the load. The device represents a two-stroke bridge voltage converter, which comprises transistors (power controlled keys) forming a transistor bridge circuit and a load two-terminal element of the bridge circuit. The first and second transistors connected in series in the transistor bridge circuit form the first transistor circuit coupled between power supply busbars. The third and fourth transistors connected in series in the transistor bridge circuit form the second transistor circuit coupled between the power supply busbars. Mid points of the first and second transistor circuits are the first and second outputs respectively of the output transistor bridge circuit, and the first and second outputs of the load two-terminal element of the bridge circuit are connected to them. The first and second transistors are controlled by paraphrase pulse signals of their first sequence while the third and fourth transistors are controlled by paraphrase pulse signals of their second sequence. The second sequence of paraphrase pulse signals is shifted in time in regard to the first sequence. The stated objectives are reached due to the introduction of auxiliary chokes and C-circuits comprised of capacitors. The first output of the first choke coil is connected directly to the first output of the output transistor bridge circuit; the second output of the first choke coil is connected to the power supply busbars through capacitors or capacitor of the first C-circuit. The first output of the second choke coil is connected directly to the second output of the output transistor bridge circuit; the second output of the second choke coil is connected to the power supply busbars or power supply busbar through capacitors or capacitor of the second C-circuit. In the first alternative of the suggested device design there are auxiliary capacitors, and in the first and second transistor circuits each transistor or one transistor included into them is shunted by the respective auxiliary capacitor. In the second alternative of the suggested device design there are auxiliary diodes. The second output of the first choke is connected to the first and second power supply busbars through the respective first and second auxiliary diodes. The second output of the second choke is connected to the first and second power supply busbars through the respective third and fourth auxiliary diodes.

EFFECT: improving energy efficiency and reliability.

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