CONTROLLER OF POWER CONVERTER

摘要

A controller that controls a switching element of the inverter using pulse width modulation is applied to a power converter including an inverter. A stable change of a carrier frequency and both current control responsiveness and inverter loss suppression are achieved. The controller is provided with a carrier-frequency setting unit 11 that sets a carrier frequency command used for pulse width modulation of an inverter 8 corresponding to a current command 2 and a current-command change rate 11b. The carrier-frequency setting unit 11 has a carrier frequency map (A) having mapped thereon information of a carrier frequency corresponding to a current command expressed in a vertical axis and a current-command change rate expressed in a lateral axis, and outputs information of a carrier frequency on the carrier frequency map (A) corresponding to the input current command 2 and the input current-command change rate 11b to a switching pattern calculator 6.