POWER CONVERSION DEVICE AND POWER CONVERSION METHOD

摘要

A power conversion device includes primary and secondary full bridge circuits, and a control portion configured to adjust a phase difference between switching in the primary full bridge circuit and switching in the secondary full bridge circuit, so as to control power transmitted between the full bridge circuits, in which each of the full bridge circuits includes an upper arm and a lower arm connected in series to each other, the control portion shortens a dead time when neither of the upper and lower arms are turned on in a transmission state, and in a case where a gate driving state is detected in which both of the upper and lower arms are turned on, the control portion sets an adjustment value of the dead time in the transmission state to a dead time value greater than a dead time detection value when the gate driving state is detected.

主权项

1. A power conversion device comprising:
a primary full bridge circuit; a secondary full bridge circuit; and a control portion configured to adjust a phase difference between switching in the primary full bridge circuit and switching in the secondary full bridge circuit, so as to control transmission power transmitted between the primary full bridge circuit and the secondary full bridge circuit, wherein each of the primary full bridge circuit and the secondary full bridge circuit includes an upper arm and a lower aim connected in series to the upper arm, the control portion shortens a dead time when neither of the upper arm and the lower arm are turned on in a transmission state in which the transmission power is transmitted with a predetermined power value, and in a case where a gate driving state is detected in which both of the upper arm and the lower arm are turned on, the control portion sets an adjustment value of the dead time in the transmission state to a dead time value which is greater than a dead time detection value when the gate driving state is detected.