| 摘要 |
<p>A power conversion system (10) suppresses condensers (3) from breaking down owing to thermal runaway. A resonance frequency f decided by parasitic inductance (6) of condensers (3) and capacitance of the condensers (3) changed in response to use temperature of the condensers (3) and/or DC voltage applied to the condensers (3) is set to fall within a range of mfc+”f‰¦f‰¦(m+1)fc-”f, where fc is a carrier frequency for driving at least one of switching elements (SW1 to SW6) of the first power converter (2) and switching elements (SW7 to SW12) of the second power converter (4), ”f a predetermined frequency and m a positive integer.</p> |
