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 language | English (US) |
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Title of host publication | Canadian Conference on Electrical and Computer Engineering |
Editors | G. Olivier, S. Pierre, V.K. Sood |
Pages | 355-358 |
Number of pages | 4 |
Volume | 1 |
State | Published - 2003 |
Externally published | Yes |
Event | CCECE 2003 Canadian Conference on Electrical and Computer Engineering: Toward a Caring and Humane Technology - Montreal, Canada Duration: May 4 2003 → May 7 2003 |
Other
Other | CCECE 2003 Canadian Conference on Electrical and Computer Engineering: Toward a Caring and Humane Technology |
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Country/Territory | Canada |
City | Montreal |
Period | 5/4/03 → 5/7/03 |
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