| 摘要 |
PCT No. PCT/GB82/00262 Sec. 371 Date Apr. 6, 1983 Sec. 102(e) Date Apr. 6, 1983 PCT Filed Aug. 31, 1982 PCT Pub. No. WO83/00962 PCT Pub. Date Mar. 17, 1983.A multi-phase switched variable-reluctance motor having a number of phase windings (A, B, C) each connected in series with at least one main thyristor (1,2,3,4,5,6) across a D.C. supply (V5) has commutating means (23) responsive to the current in the different windings, the angular position of the rotor, the state of the main thyristors, the motor speed, and the desired operating condition, to control the firing and commutation of the main thyristors. Two modes of operation described in detail are a chopping mode in which chopping is controlled independently in two adjacent phases at the same time, and a single pulse mode with free-wheeling. |
