| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller for power converter which will not perform protective stopping operation caused by overcurrent due to bias magnetization in a transformer by restraining the extension of the magnetism in the transformer. SOLUTION: This controller is provided with a magnetic flux change estimation calculating circuit 10 estimating a magnetic flux change in a transformer core, and a bias magnetization restraining circuit 11 outputting a correction control signal for regulating the output voltage so as to bring back the bias of the magnetic flux change in the transformer core to zero using the output signal of the magnetic flux change estimation calculating circuit as an input signal. |
