| 摘要 |
<p>A motor (4) comprises a stator which generates a rotating magnetic field according to the energization of plural groups (A, B) of coils, and a rotor rotated by the rotating magnetic field of the stator. An inverter (3) comprises the same number of switching circuits (3A, 3B) as the number of groups which supply alternating current to the coils of the groups (A, B) according to the switching action of switching elements (SW1 - SW6, SW7 - SW12) of each of the switching circuits (3A, 3B), and a control unit (10) which controls the switching elements (SW1 - SW6, SW7 - SW12) so that the sum of the terminal voltages of the coils of each of the groups (A, B) is constant. <IMAGE></p> |
