| 摘要 |
PROBLEM TO BE SOLVED: To prevent biased magnetization without degrading control responsiveness or stability of an output voltage.SOLUTION: A power conversion device includes: a switching circuit applying voltages in one direction and a reverse direction to a primary coil of a transformer by sequentially switching elements composed of an upper arm and a lower arm; a rectifier circuit rectifying an AC output occurring in a secondary coil of the transformer; and a control device controlling on and off of the switching elements. The control device includes a detector detecting biased magnetization of the transformer, and increases a predetermined amount of application time of the voltage applied in the one direction and decreases the predetermined amount of application time of the voltage applied in the reverse direction according to an output of the detector to reduce the biased magnetization. |
