Current controlling method and apparatus for electric rotating machine

A method for controlling a current of an electrical rotating machine, the rotating machine comprising a plurality of rotors driven by a compound current, the method comprising:

• superposing a sum of high-order higher harmonic wave currents having current components whose phases are different by 90 [el. deg] from respective magnetic flux higher harmonic waves caused by at least one magnets present on the respective rotors of the rotating machine and whose phases are the same as those of the respective magnetic flux higher harmonic waves on the compound current which is a sum of fundamental wave currents;
• and
• supplying the sum of the high-order higher harmonic wave currents superposed on the sum of the fundamental wave currents in the compound current to the rotating machine.

An apparatus for controlling a current of an electrical rotating machine, comprising:

• a superposing section that superposes at least one high-order higher harmonic wave current on a fundamental wave current, the high-order higher harmonic wave current having current components one phase of which is different by 90 [el. deg] from a high-order high harmonic wave component included in a magnetic flux distribution generated by at least one magnet of the rotating machine and the other phase of which is the same as that of the high-order higher harmonic wave component included therein;
• and
• a supplying section that supplies the high-order harmonic wave current component superposed on the fundamental wave current to the rotating machine.

An apparatus for controlling a current of an electrical rotating machine, the rotating machine comprising a plurality of rotors driven by a compound current, the method comprising:

• a superposing section that superposes a sum of high-order higher harmonic wave currents having current components whose phases are different by 90 [el. deg] from respective magnetic flux higher harmonic waves caused by magnets present on the respective rotors of the rotating machine and whose phases are the same as those of the respective magnetic flux higher harmonic waves on the compound current which is a sum of fundamental wave currents;
• and
• a supplying section that supplies the sum of the high-order higher harmonic wave currents superposed on the sum of the fundamental wave currents in the compound current to the rotating machine.

An apparatus for controlling a current of an electrical rotating machine, comprising:

• superposing means for superposing at least one high-order higher harmonic wave current on a fundamental wave current, the high-order higher harmonic wave current having current components one phase of which is different by 90 [el. deg] from a high-order high harmonic wave component included in a magnetic flux distribution generated by at least one magnet of the rotating machine and the other phase of which is the same as that of the high-order higher harmonic wave component included therein;
• and
• supplying means for supplying the high-order harmonic wave current component superposed on the fundamental wave current to the rotating machine.