Patent ID: 11881785
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. The power conversion device according to claim 1, wherein, in the first operation mode, the control circuit obtains a second current value completing the charging and discharging of the snubber capacitor during the dead time as a zero volt switching current value, using the dead time, a capacitance value of the snubber capacitor, and a converted value of the second DC voltage on the side of the first winding or the first DC voltage, and sets the length of the zero voltage period in accordance with a predetermined first arithmetic expression including the zero volt switching current value, switching frequency of the positive-side switching element and the negative-side switching element, the first DC voltage, a converted value of the second DC voltage on the side of the first winding, and an inductance value of an inductance element between the transformer and the first bridge circuit or the second bridge circuit.