Patent ID: 11901827
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The power conversion device according to claim 5, wherein
when the second DC voltage in terms of the primary-side winding which is provided from the first secondary-side; DC terminal becomes lower than the first DC voltage due to variation in second DC voltage, the first controller applies pulse width modulation control to the first AC voltage in accordance with a second modulation factor calculated by dividing the second DC voltage in terms of the primary-side winding by the first DC voltage, and
when both of the first and second modulation factors are equal to or higher than a predetermined threshold value within a range smaller than one, pulse width modulation control is applied to neither of the first AC voltage and the second AC voltage.