| 摘要 |
PCT No. PCT/GB96/03114 Sec. 371 Date Sep. 18, 1998 Sec. 102(e) Date Sep. 18, 1998 PCT Filed Dec. 17, 1996 PCT Pub. No. WO97/23941 PCT Pub. Date Jul. 3, 1997A hybrid single-phase variable reluctance motor system has a stator (1) having a pair of oppositely disposed salient main poles (4) provided with main windings (12) and at least one pair of oppositely disposed salient auxiliary poles (5, 6) provided with auxiliary windings (13, 14) and disposed intermediate the main poles (4) on the stator (1). Furthermore the motor system has a rotor (2) having a pair of oppositely disposed salient poles (7) without windings. Additionally the motor system includes a control circuit (11) for rotating the rotor (2) during normal running by supplying current pulses to the main stator windings (12) in synchronism with rotation of the rotor (2) and for rotating the rotor (2) on starting by supplying current pulses to both the main and auxiliary stator windings (12, 13, 14) in synchronism with rotation of the rotor (2). By supply of current pulses to the auxiliary stator windings as well as the main stator windings on starting, it is possible to ensure that positive torque can be produced at substantially all rotor positions, thus guaranteeing that the motor system can be started regardless of the position in which the rotor has previously come to rest. |
