Harmonic noise control in chopper type voltage regulators

Details Harmonic noise control in chopper type voltage regulators Harmonic noise control in chopper type voltage regulators

1983-11-15

1985-03-12

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 45, 323224, H02J 102

Patent

active

045048975

ABSTRACT:
Voltage regulators of the waveform chopping type operable with alternating current sources are operated in a mode wherein a wave train complementary to the chopping wave train is provided with the property that each of the wave trains has equal amplitude and inverse polarity harmonics. Thus the two wave trains may be added together to cancel out all the noise introduced by the chopping. This is done by synchronously switching the respective wave trains in two corresponding processing channels leading to two respective power output channels, wherein one channel has incorporated therein amplitude regulation means, preferably of the feedback type. To remove the noise components, the higher frequency harmonics are isolated from the fundamental frequency which serves as the power supply medium, and then the equal amplitude and opposite sense harmonics are added together to cancel the noise components.

REFERENCES:
patent: 1873952 (1932-08-01), Aubort
patent: 2008519 (1935-07-01), Smith
patent: 2117752 (1938-05-01), Wrathall
patent: 2236254 (1941-03-01), Willis
patent: 3551851 (1970-12-01), Engel
patent: 3553566 (1971-01-01), Nagy, Jr.
patent: 3564394 (1971-02-01), Opal et al.
patent: 3825814 (1974-07-01), Pelly
patent: 4124241 (1979-02-01), Freilich et al.
patent: 4190882 (1980-02-01), Chevalier et al.
patent: 4323845 (1982-04-01), Leach
patent: 4358818 (1982-11-01), Rosa

Affiliated with

Also associated with

Rating

Harmonic noise control in chopper type voltage regulators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Harmonic noise control in chopper type voltage regulators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Harmonic noise control in chopper type voltage regulators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-711173