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

Claim 16:
17. The power conversion device according to claim 13, wherein
the power conversion device further has a second operation mode in the 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 power transmission between the first DC terminal and the second DC terminal in the second operation mode, and applies the second operation mode when the transmission power is higher than a predetermined boundary value while applying the first operation mode when the transmission power is lower than the boundary value.