Indirect matrix converter, device for controlling the slewing of machinery, and machinery

Provided is an indirect matrix converter wherein distortion of the input current or output voltage can easily be reduced. The indirect matrix converter is provided with a first power converter (16) and a second power converter (18), and is configured so that a PWM generator (126) generates a PWM signal for the first power converter on the basis of a first power conversion command from a first power conversion command generator (128). A second power conversion command generator (130) generates a second power conversion command on the basis of the first power conversion command. A command correcting unit (132) corrects the second power conversion command and supplies the corrected second power conversion command to the PWM generator (126). The PWM generator (126) generates a PWM signal for the inverter in order to ensure that the switches of the first power converter (16) and the second power converter (18) are not all switched off simultaneously.