| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system interconnection inverter which suppresses noise caused by resonance generated between an inter-winding capacitor of a common mode choke coil and a reactor of an output filter. <P>SOLUTION: A system interconnection inverter 1 includes: a bypass line g of a common mode current which is formed by connecting a neutral point of a first capacitor set 41 arranged on an input side of the inverter 1 and a neutral point of a second capacitor set 42 arranged on an output side of the inverter 1; a common mode choke coil 3 which is provided between the first capacitor set and the second capacitor set and on the input side or the output side of the inverter and which suppresses a common mode current generated in the inverter; an output filter 2 comprising first reactors 21a, 21b and a third capacitor 22 which are for converting a pulse-width modulated voltage waveform outputted from the inverter into a sine-wave AC; and resonance suppression circuits 23, 24, and 25 which suppress resonance generated between the inter-winding capacitor of the common mode choke coil and the first reactors of the output filter. <P>COPYRIGHT: (C)2012,JPO&INPIT |
