Electronic system and method for correcting the power factor of

Details Electronic system and method for correcting the power factor of Electronic system and method for correcting the power factor of

1991-05-13

1992-06-09

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 44, 363126, G05F 170, H02M 706

Patent

active

051213168

ABSTRACT:
An electronic power factor corrector for a main equipment is employed to correct the power factor of an accessory to the main equipment. A voltage signal is generated in accordance with the rectified current input to the accessory. This voltage signal is summed with a voltage signal in accordance with the sampled input current or the current in the return current path from the main equipment. The summation signal is fed to a differential amplifier where it is compared with a reference signal in accordance with the current input to the main equipment. The output of the differential amplifier is fed as a control signal to a switching current source circuit which controls the current drawn by the main equipment and accessory to maintain the power factor close to unity.

REFERENCES:
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patent: 4555753 (1985-11-01), Takahashi
patent: 4677366 (1987-06-01), Wilkinson et al.
patent: 4683529 (1987-07-01), Bucher, II
patent: 4688162 (1987-08-01), Mutch et al.
patent: 4866585 (1989-09-01), Das
patent: 4940929 (1990-07-01), Williams
patent: 5003454 (1991-03-01), Bruning
patent: 5006975 (1991-04-01), Neufeld

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