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

Claim 10:
11. The power conversion device according to claim 10, wherein
when the third DC voltage in terms of the primary-side winding becomes lower than the first DC voltage due to variation in third DC voltage, the first and second controllers apply pulse width modulation control to both of the first and second AC voltages in accordance with a fourth modulation factor calculated by dividing the third DC voltage in terms of the primary-side winding by the first DC voltage, and
when both of the third and fourth 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 none of the first AC voltage, the second AC voltage, and the third AC voltage.