A microprocessor-based adaptive power factor corrector for nonlinear loads

Author

El-Bolok, H.M. ; Masoud, M.E. ; Mahmoud, M.M.

Author_Institution

Fac. of Eng. & Technol., Helwan Univ., Cairo, Egypt

Volume

37

Issue

1

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

77

Lastpage

81

Abstract

A microprocessor-based adaptive power factor corrector for poor power factor (linear or nonlinear) loads is introduced. The system power factor is measured by the microprocessor and compared with a predetermined reference value. Accordingly, the microprocessor adjusts the power factor to get the predetermined value. This is achieved by controlling the firing angle of a thyristorized static VAR (volt-ampere reactive) compensator through microcomputer software. The system power factor is measured by the microprocessor at every supply cycle, and the above sequence is repeated. The proposed scheme achieves both accurate measurement and adjustment of the system power factor

Keywords

adaptive control; microcomputer applications; power factor correction; power system computer control; static VAr compensators; thyristor applications; SVC; adaptive control; firing angle; microprocessor; power system computer control; software; thyristor applications; Clocks; Counting circuits; Frequency synchronization; Inductors; Microprocessors; Power measurement; Pulse circuits; Reactive power; Thyristors; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.45846

Filename

45846