| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power converter that can prevent insulation deterioration of a load and a power supply due to an excessive surge voltage. <P>SOLUTION: A power converter for driving a motor is configured to interpose a filter circuit comprising a reactor Lf and a capacitor Cf between an inverter 2 and a motor 4. Each of semiconductor switching elements Su-Sw and Sx-Sz that constitute the inverter 2 is subject to on-off operation with a control signal composed of first to third on signals. Additionally, time when the first and third on signals are outputted, time elapsed from an output of the first on signal to an output of the second on signal, and time elapsed from an off of the second on signal to an output of the third on signal are changed in proportion to a length of a resonance period T of the filter circuit. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
