CONTROL METHOD OF DC-LINK PARALLEL-RESONANCE TYPE POWER CONVERTER

摘要

PURPOSE: To make it possible to use an element having a low breakdown voltage and a small capacitance as a device by limiting the peak value of the voltage of a DC link part, and preventing a reactor current for resonance. ;CONSTITUTION: The switching pattern of an inverter part 4 is determined with a magnetic-flux loop, and the inverter part 4 is switched in accordance with the switching pattern during the zero-voltage period of a resonance capacitor 3, in this DC-link parallel-resonance type inverter. This method is related to the control of the inverter thereof. As the switching pattern in the zero-voltage period of the resonance capacitor 3, the switching pattern, wherein the magnetic flux vectors become two neighboring voltage vectors holding the tangent line of a rotating circular locus and the zero-voltage vector, is selected.;COPYRIGHT: (C)1994,JPO