| 摘要 |
PCT No. PCT/FR96/01808 Sec. 371 Date May 18, 1998 Sec. 102(e) Date May 18, 1998 PCT Filed Nov. 15, 1996 PCT Pub. No. WO97/19511 PCT Pub. Date May 29, 1997A method for controlling the power of a load (1) powered from a source of AC voltage U having a period T using a phase control system, wherein, for a predetermined set power, a sequence of an integer p of elements, where p is greater than 1, is periodically delivered to the load (1), each element, numbered i, of the sequence being characterized by an integer ni with a half-period T/2 during which the AC voltage U is switched according to a series of different phase angles alpha i from alpha 1 to alpha n corresponding to respective durations ti from tl to tn during which the load (1) is cut: off from the power supply. The phase angles alpha i of element i and alpha i+1 of element i+1 have similar repetitive values so that the mean current is zero over a complete cycle.
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