| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for operating a power electronic circuit comprising a first power converter and at least one second power converter. SOLUTION: A switch of the power electronic circuit is subjected to pulse width modulated driving by comparing reference oscillation with carrier oscillation. Third harmonic especially contains a low driving level ratio in the range of 20-87% and mixed with the reference oscillation practically over the entire range of driving level. A component corresponding to ninth harmonic may be mixed in the driving level range of 20-33%. Since a low clock frequency is generated for a first power converter 1, feedback capacity is not required for a second converter 6. |
