H - Electricity – 02 – M
Patent
H - Electricity
02
M
323/10
H02M 1/14 (2006.01) H02M 7/155 (2006.01) H02M 7/162 (2006.01) H02M 7/17 (2006.01)
Patent
CA 1146218
ABSTRACT OF THE DISCLOSURE A circuit for use in a multiphase regulated supply to provide regulation of the ripple current contained in the filtered d.c. output signal of the supply. The supply regulates its output voltage and/or current by controlling the conduction time of the switching elements contained in the rectifier portion of the supply. The switching element conduction time is controlled by controlling the generation of firing pulses to the switching elements as a function of an error control signal which is equal to a first error signal. This signal is equal to the amount by which the actual value of said voltage and/or current deviates from a reference value of said parameter. when the ripple regulation circuit is included in the supply, a second error signal is generated which represents the deviation of the d.c. value of the ripple from a predetermined reference. Also included in the ripple regulation circuit is circuitry for selecting the error control signal as equal only to the larger amplitude one of the first and second error signals. The supply therefore regulates only voltage and/or current until the ripple becomes excessive at which point the supply regulates only ripple.
371545
Plow Robert J.
Rader Jerry C.
Reliance Electric Company
Ridout & Maybee Llp
LandOfFree
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