| 摘要 |
PCT No. PCT/FR95/01371 Sec. 371 Date Apr. 28, 1997 Sec. 102(e) Date Apr. 28, 1997 PCT Filed Oct. 18, 1995 PCT Pub. No. WO96/13894 PCT Pub. Date May 9, 1996A method for controlling the power supplied to a load (1) which is powered by an AC voltage source U with a period T via a generalised phase adjustment system, includes the steps of periodically delivering a sequence of p elements to the load (1), in accordance with a predetermined set power, wherein p is an integer and each element comprises ni periods T, where ni is an integer, during which the voltage U is divided symmetrically at an angle alpha i, the consecutive phase angles alpha i and alpha i+1 being different, and the combination of angles alpha 1 . . . alpha i , . . . alpha p being selected in such a way that they limit current harmonics, and limit a flicker effect. The method is particularly suitable for power control in electric motors. |
