Shifting of Load Harmonic in the Single Phase AC-to-AC Phase Control Converters

K. A. Nigim, G. T. Heydt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Many AC-to-AC single-phase controllers generate low sub-frequency harmonic that causes flickers and requires large filters. Shifting the harmonic frequency to a higher location from the fundamental will result in smaller and cheaper filtering element. Harmonic frequency can be shifted to high frequency location by using pulse width modulation. The PWM control the switching of the power device incorporated in the AC-to-AC conversion circuit. Using specified PWM pattern, the fundamental component can be controlled with the switching harmonics generated at higher than the fundamental frequency. The first harmonic is located at a frequency that depends on the switching frequency of the controlling devices. The paper presents simple pulse modulated controllers that control the switching instants of AC-to-AC single-phase controller to produce continuous variable AC voltage with easy to filter harmonic. The PWM controller replaces the phase control technique that normally employed in many ac electronic regulators used in heaters, light dimmers and the control of many single-phase fractional horsepower motors.

Original languageEnglish (US)
Title of host publicationCanadian Conference on Electrical and Computer Engineering
EditorsG. Olivier, S. Pierre, V.K. Sood
Pages355-358
Number of pages4
Volume1
StatePublished - 2003
Externally publishedYes
EventCCECE 2003 Canadian Conference on Electrical and Computer Engineering: Toward a Caring and Humane Technology - Montreal, Canada
Duration: May 4 2003May 7 2003

Other

OtherCCECE 2003 Canadian Conference on Electrical and Computer Engineering: Toward a Caring and Humane Technology
CountryCanada
CityMontreal
Period5/4/035/7/03

Keywords

  • AC phase control voltage converter
  • Integral cycle control
  • Pulse width modulation and Harmonic mitigation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture

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  • Cite this

    Nigim, K. A., & Heydt, G. T. (2003). Shifting of Load Harmonic in the Single Phase AC-to-AC Phase Control Converters. In G. Olivier, S. Pierre, & V. K. Sood (Eds.), Canadian Conference on Electrical and Computer Engineering (Vol. 1, pp. 355-358)