| 摘要 |
PURPOSE:To suppress high order harmonic wave components by providing reactors at the output sides of the filters of a plurality of sets of inverters to be operated in parallel. CONSTITUTION:CVCF power sources 10 as inverters are each composed of a rectifier 11, an inverter 12 and a filter 13. Similarly, CVCF power sources 20, 30 as inverters are composed of rectifiers 21, 31, inverters 22, 32 and filters 23, 33, convert AC powers from an AC power source 2 into an AC power having a predetermined voltage and a predetermined frequency, and supplies it to a common load 3. In this case, reactors 14, 24, 34 are connected in series with the three sets of the power sources 10-30, and connected in parallel through reactors 14, 24, 34 to the power sources 10-30. Thus, high order high frequency currents can be suppressed. |
