| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power conversion apparatus that combines a voltage-type converter advantageous in economical efficiency with a parallel resonance circuit capable of controlling a coil voltage. <P>SOLUTION: The conversion apparatus is constituted of a DC power supply 9, the voltage-type converter 5 for converting a direct current of the DC power supply 9 into an alternating current, and an impedance element arranged between the output of the voltage-type converter 5 and the parallel resonance circuit 7 acting as a load. The impedance element contains at least any of a reactor 6 and a transformer 10, and has an inductance value so that an output current of the voltage-type converter 5 at the transient operation is suppressed from becoming excessive. An output frequency of the voltage-type converter 5 almost agrees with a resonance frequency of the parallel resonance circuit 7. <P>COPYRIGHT: (C)2011,JPO&INPIT |
