| 摘要 |
A control method for bidirectional DC-DC converter includes: operating a bidirectional DC-DC converter in a boost mode, the bidirectional DC-DC converter including a low voltage side and a high voltage side, the low voltage side including low-voltage-side switches, a voltage clamping switch and a voltage clamping capacitor and the high voltage side including high-voltage-side switches; switching the voltage clamping switch with a predetermined duty cycle prior to switching on all of the low-voltage-side switches; adjusting the duty cycle of the voltage clamping switch being smaller than a turn-off interval of the low-voltage-side switches to reduce the conduction loss of the low-voltage-side switches and the voltage clamping switch; alternatively, operating the DC-DC converter in a buck mode; adjusting and extending the duty cycle of the low-voltage-side switches to overlap a turn-off time of the high-voltage-side switches so as to reduce the conduction loss of the low-voltage-side switches. |
