INVERTER DEVICE

Provided is a serial multiplex inverter device (1) in which single phase output inverter cells (2) (U1-U6, V1-V6, W1-W6) each receiving AC power via a transformer (Tr) are connected in series in a multi-stage manner on a per-phase basis to form respective U-phase, V-phase, and W-phase and one ends of the series connections of the respective phases are connected with each other at a neutral point (N). Current detectors (HCT) are disposed in wires (3) leading from the inverter cells (U1, V1, W1) of a first stage to the neutral point (N), respectively. The neutral point (N) is connected through aresistor (R) to the ground. Accordingly, the potential of the wires (3) is low, so that the current detectors (HCT) are those conforming to a low withstand voltage specification. 串联多路逆变器装置(1)将经由变压器(Tr)分别被输入交流电力的单相输出逆变器组件(2)(U1～U6、V1～V6、W1～W6)按各相多级串联连接而分别构成U相、V相、W相，这些各相的串联连接的一端在中性点(N)相互连接。在从第一级逆变器组件(U1、V1、W1)到中性点(N)的布线(3)分别配置有电流检测器(HCT)。中性点(N)经由电阻(R)而接地。因此，布线(3)的电位较低，电流检测器(HCT)为低耐压规格。