发明名称 |
Duty cycle based AC power control with reduced voltage fluctuations |
摘要 |
A duty cycle based AC power control method reduces objectionable voltage fluctuations at a frequency that causes "flicker" by shifting the frequency of actuations of controlled devices to frequencies significantly greater than and/or less than the flicker sensitive frequency. The frequency of actuations may be redistributed (1) by segmenting the devices to provide approximately equal power requirements per actuation, (2) by providing one-half cycle actuation pulses rather than one cycle actuation pulses, and/or (3) by spacing the actuations evenly over a given time period and forcing the aggregate demand to follow a slowly rising/falling envelope. The result is the minimization of power distribution at the flicker frequency.
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申请公布号 |
US5867016(A) |
申请公布日期 |
1999.02.02 |
申请号 |
US19970936978 |
申请日期 |
1997.09.25 |
申请人 |
TEKTRONIX, INC. |
发明人 |
BAUR, BRUCE K.;DALRYMPLE, JOHN C.;WESTERLUND, CORY A. |
分类号 |
H02M5/257;(IPC1-7):H05B37/02 |
主分类号 |
H02M5/257 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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