Patent ID: 11881788
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. The DC/DC: converter according to claim 1, wherein
in second power transmission in which power is transmitted from the second DC power source to the first DC power source,
in the second convener, the control circuit performs DC/AC power conversion by performing on/off drive control of the positive electrode-side switching element and the negative electrode-side switching element in each of the third bridge circuit and the fourth bridge circuit, and
in the first convener, the control circuit performs AC/DC power conversion by stopping on/off drive of the positive electrode-side switching element and the negative electrode-side switching element in the first bridge circuit and performing on/off drive control of the positive electrode-side switching element and the negative electrode-side switching element in the second bridge circuit, and
when a second power transmission amount by the second power transmission is smaller than a second reference value, the control circuit lowers a switching frequency for driving on and off of the respective switching elements of the second bridge circuit, the third bridge circuit, and the fourth bridge circuit, compared with when the first power transmission amount is equal to or greater than the first reference value.