Power factor/harmonics correction circuitry and method thereof

Details Power factor/harmonics correction circuitry and method thereof Power factor/harmonics correction circuitry and method thereof

1996-08-07

1997-11-18

Wong, Peter S.

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

323288, 363 41, G05F 110, G05F 144, H02M 112

Patent

active

056891768

ABSTRACT:
The power factor/harmonic correction circuitry accomplishes this by using a non-linear ramp signal and/or by using a negative feedforward technique. The power factor/harmonic correction circuitry accomplishes the feedforward technique by using a modulated ramp circuit which adds to the ramp signal a constant value that is proportional to the input voltage. Furthermore, the power factor/harmonics correction circuitry can provide improved performance and stability by using a non-linear ramp circuit which produces the non-linear ramp signal which has an increasing slope over the switching cycle.

REFERENCES:
patent: 4486702 (1984-12-01), Edwards
patent: 4536700 (1985-08-01), Bello et al.
patent: 4546421 (1985-10-01), Bello et al.
patent: 4677366 (1987-06-01), Wilkinson et al.
patent: 4885675 (1989-12-01), Henze et al.
patent: 4935859 (1990-06-01), Kirchberg et al.
patent: 4935860 (1990-06-01), Kirchberg et al.
patent: 4947102 (1990-08-01), Ekstrand et al.
patent: 4977492 (1990-12-01), Kirchberg, Jr. et al.
patent: 5115185 (1992-05-01), Fraidlin et al.
patent: 5301098 (1994-04-01), Dhyanchand et al.
patent: 5317498 (1994-05-01), Dhyanchand et al.
patent: 5327335 (1994-07-01), Maddali et al.
patent: 5349515 (1994-09-01), Megeid
patent: 5359277 (1994-10-01), Cowett, Jr.
patent: 5377092 (1994-12-01), Rowand et al.
patent: 5404093 (1995-04-01), Cowett, Jr.
patent: 5414342 (1995-05-01), Mammano et al.
patent: 5428286 (1995-06-01), Kha
patent: 5459392 (1995-10-01), Mandelcorn
patent: 5490055 (1996-02-01), Boylan et al.
patent: 5572416 (1996-11-01), Jacobs et al.

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