THREE-PHASE ROTATING MACHINE CONTROLLER

摘要

A three-phase rotating machine controller includes electric power converters that output, to the winding sets of a three-phase rotating machine, alternating currents having a same amplitude and a phase difference of (30±60*n) degrees from each other, n being an integer, and a control unit that reduces a peak of a phase current 1st order component applied to the rotating machine by superimposing therewith a phase current 5th order component and a phase current 7th order component, which have 5 times and 7 times the frequency of the phase current 1st order component, respectively. The control unit superimposes the phase current 5th and 7th order components having an optimum combination of amplitudes such that a peak reduction amount of the phase current 1st order component exceeds 5%, the amplitudes of the phase current 5th and 7th order components being with respect to the amplitude of the phase current 1st order component[

主权项

1. A three-phase rotating machine controller for driving a three-phase rotating machine having two three-phase winding sets, comprising:
a first electric power converter and a second electric power converter corresponding to the two winding sets, the first electric power converter and the second electric power converter outputting, to the two winding sets, alternating currents having a same amplitude as each other and having a phase difference of (30±60*n) [degrees] from each other, n being an integer; and a control unit that controls energizing of the three-phase rotating machine so as to reduce a peak of a phase current 1st order component applied to the three-phase rotating machine by superimposing a phase current 5th order component and a phase current 7th order component with the phase current 1st order component, the phase current 5th order component having 5 times the frequency of the phase current 1st order component, the phase current 7th order component having 7 times the frequency of the phase current 1st order component, wherein the control unit superimposes the phase current 5th order component having an amplitude of 8.1 to 16.1 [%] and the phase current 7th order component having an amplitude of 0.6% to 11.1 [%], the amplitudes of the phase current 5th order component and the phase current 7th order component being defined with respect to the amplitude of the phase current 1st order component.