Fine power control by discontinuous phase-controlled switching

Author

Asghar, Syed M Jamil

Author_Institution

Dept. of Electr. Eng., Aligarh Muslim Univ., India

Volume

46

Issue

3

fYear

1999

fDate

3/1/1999 12:00:00 AM

Firstpage

402

Lastpage

405

Abstract

Different voltage control techniques are commonly used for heating power control. In the proposed method, the drawbacks of integral-cycle control and phase-controlled switching techniques are removed by combining them together. Step and fine voltage variations are achieved by the former and latter methods, respectively. Load resistance is replaced by several equivalent parallel resistances to eliminate subsynchronous harmonics completely, to reduce higher order harmonics significantly, and to bring power factor close to unity

Keywords

harmonics suppression; phase control; power control; power factor correction; resistance heating; switching circuits; thyristor circuits; voltage control; discontinuous phase-controlled switching; fine power control; fine voltage variations; heating power control; higher order harmonics reduction; integral-cycle control; power factor; step voltage variations; subsynchronous harmonics elimination; Circuits; Delay; Digital filters; Finite impulse response filter; Passband; Polynomials; Power control; Power harmonic filters; Radiofrequency interference; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.751315

Filename

751315