Electricity: power supply or regulation systems – For reactive power control – Using converter
Patent
1993-07-28
1995-02-21
Stephan, Steven L.
Electricity: power supply or regulation systems
For reactive power control
Using converter
363 45, G05F 170, H02M 114
Patent
active
053919769
ABSTRACT:
A power factor control system for a rectifier is operative through the generation of estimators of control input parameters (a peak squared input AC voltage E.sub.m.sup.2 and load power) and by the use of these substantially ripple free signals controls a boost, buck, buck-boost, SEPIC or other related type converter at the input to the rectifier. The generation of these parameters allows the derivation of a programmed current i.sub.p used to control the wave form of the actual input current. The control procedure is based on a quarter cycle averaged power basis. The input power is derived from the rms values of the input voltage and current. Given the output power and its deviations in power due to load changes, the programmed current i.sub.p is determined by deriving an input conductance of the rectifier and combining it with the input voltage.
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Farrington Richard W.
Jacobs Mark E.
Wilkinson William P.
AT&T Corp.
Nappi Robert
Steinmetz Alfred G.
Stephan Steven L.
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