MULTI-PHASE CIRCUIT CONTROL METHOD AND POWER CONVERSION DEVICE

Abstract: a multi-phase circuit control method includes following steps: generating a first control signal and a second control signal to a first phase circuit respectively by a controller; generating a third control signal and a fourth control signal to a second phase circuit respectively by controller; outputting a two-phase voltage to a output terminal of a power conversion device by first phase circuit and second phase circuit; changing a duty cycle of third control signal to turn off a first switch of a primary side circuit and a rectifier side circuit of second phase circuit by controller when controller is configured to detect that output voltage is lower than a first preset voltage; changing a duty cycle of fourth control signal to conduct a second switch of a primary side circuit and a rectifier side circuit of second phase circuit; and outputting a single-phase voltage to output terminal.

Inventor(s): Ching WANG, Ting-Chen PAN, Sheng-Hsiung CHUANG

CPC Classification: H02M3/1588 (APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers ; dynamo-electric converters ; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters ))

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