Power conversion device

A power conversion device comprising a power converter which supplies power that drives a rotary electric machine by a switching operation of a switching element, the power conversion device further comprising a controller for the power converter, the controller comprising:

• control amount calculation circuitry configured to calculate two or more control amounts each indicating a driving condition of the rotary electric machine on the basis of output current from the power converter and a switching state of the switching element of the power converter;
• limitation range-provided command value generation circuitry configured to generate limitation range-provided command values including limitation ranges for pulsations of the control amounts relative to command values for the control amounts;
• and
• switching state determination circuitry configured to determine a switching state on the basis of each control amount and the corresponding limitation range-provided command value such that the control amount falls within the limitation range of the limitation range-provided command value, wherein,
• for at least one of the limitation range-provided command values, the limitation range of the limitation range-provided command value is temporally changed on the basis of the driving condition of the rotary electric machine.