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

Claim 17:
18. The power conversion device according to claim 13, wherein
the power conversion device further has a second operation mode in power transmission between the first DC terminal and the second DC terminal, and
the control circuit controls the on and off of each of the positive-side switching elements and each of the negative-side switching elements of the first and second bridge circuits so as to provide the first phase difference between the first AC voltage and the second AC voltage without providing the zero voltage period in both the first AC voltage and the second AC voltage in the power transmission between the first DC terminal and the second DC terminal in the second operation mode, and applies the second operation mode when an absolute value of a difference between the detection value of the first DC voltage and the converted value of the detection value of the second DC voltage on the side of the first winding is smaller than a predetermined determination value while applying the first operation mode when the absolute value is larger than the determination value.