CONTROLLER OF ROTARY ELECTRIC MACHINE

摘要

Included are: current detection means (2) for detecting rotary electric machine currents generated in a rotary electric machine (1), position estimation means (3) for outputting an estimated position ¸p in accordance with the rotary electric machine currents; control means (4) for outputting voltage commands in accordance with the estimated position ¸p; pulse-width modulation means (5) for outputting logic signals which are pulse-width modulated in accordance with the voltage commands and with a switching cycle used for pulse-width modulation control; and voltage application means (6) for applying AC voltages for driving the rotary electric machine in accordance with the logic signals. The voltage commands output by the control means (4) are obtained by superimposing, on fundamental voltages for driving the rotary electric machine, position detection voltages which each have a cycle equal to m times of the switching cycle and which are different in phase among respective phases.