Indirect matrix converter, the working machine of the turning control device and the working machine

Easily possible to reduce the distortion of the input current and the output voltage at the A indirect matrix converter. In A indirect matrix converter comprising first power conversion unit (16) and a second power conversion unit (18) (14), a first power conversion from the first power conversion command generating unit (128) PWM generation section (126) for generating a PWM signal of the first power conversion on the basis of a command. The second power conversion command generating unit based on the first power conversion command (130) to generate a second power conversion command. And supplies the PWM generator 126 command correction unit 132 corrects the second power conversion command. PWM generator 126, all switches of the first power conversion unit 16 and the second power conversion unit 18 so as not to simultaneously turned off, it generates a PWM signal for the inverter.