Current controlling method and apparatus for electric rotating machine
AssigneeNissan Motor Co., Ltd.
InventorMinoru Arimitsu
Life of this patent
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Abstract
In method and apparatus for controlling a current of an electrical rotating machine, at least one high-order higher harmonic wave current is superposed 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 the high-order harmonic wave current component is superposed on the fundamental wave current to the rotating machine.
Claims11
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.
A method for controlling a current of an electrical rotating machine comprising:
- 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 the high-order harmonic wave current component superposed on the fundamental wave current to the rotating machine,
- wherein the rotating machine comprises a plurality of rotors driven by a compound current and wherein a sum of the high-order higher harmonic wave currents having current components whose phases are different by 90 [el. deg] from only respectively arbitrary N-th number order higher harmonic waves from among magnetic flux higher harmonic waves caused by the magnets present on the respective rotors and whose phases are the same as the respectively arbitrary N-th number order magnetic flux higher harmonics caused thereby are superposed on the compound current which is a sum of fundamental wave current components.
A method for controlling a current of a rotating machine, comprising:
- 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 the high-order harmonic wave current component superposed on the fundamental wave current to the rotating machine,
- wherein the rotating machine comprises two compound motors, each motor independently having a stator coil and a rotor, in which an ineffectual current is controlled to improve a whole working efficiency in a case where the coils of the same polarity are connected in parallel to each other in two stator coils.
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 apparatus 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.
Dependencies are inferred from the claim text.