DocumentCode :
2375684
Title :
Pulse Density Modulation Pattern Optimization using Genetic Algorithms
Author :
Pimentel, Demian ; Cheriti, Ahmed ; Ben Slima, Mohamed ; Sicard, Pierre
Author_Institution :
Departement de Genie Electrique et Genie Informatique, Univ. du Quebec a Trois-Rivieres, Que.
fYear :
2006
fDate :
6-10 Nov. 2006
Firstpage :
1655
Lastpage :
1660
Abstract :
Pulse density modulation (PDM) can be used to drive resonant power converters and is an alternative to pulse width modulation (PWM). Its main advantage is simplicity, which allows a power device to achieve zero-current (or voltage) switching while performing load power regulation. Reduced switching stress hinders a converter from polluting power lines with electromagnetic noise. This technique is suitable for designing power converters that show a good overall power factor and low total harmonic distortion (THD). PDM can be used to drive resonant (series or parallel) power converters. These converters are frequently used in induction heating applications where they are required to operate at high frequencies and deliver a wide range of output powers. Conveniently, the power factor produced by PDM converters is near unity and THD is low at high-output powers. However, at low-output powers, THD increases and the power factor gets far away from unity. This paper presents a technique that makes it possible to obtain optimal PDM patterns. Simulations are used to show that intelligent PDM pattern generation using genetic algorithms allows for an improved power factor and a reduced THD at low-output powers. A comparison with other PDM pattern generation techniques shows that AG patterns demonstrate a much better performance
Keywords :
PWM power convertors; genetic algorithms; harmonic distortion; induction heating; power factor; resonant power convertors; THD; electromagnetic noise; genetic algorithms; induction heating applications; intelligent PDM pattern generation; pattern generation techniques; power factor; power line pollution; pulse density modulation pattern optimization; resonant power converters; total harmonic distortion; Genetic algorithms; Power generation; Pulse modulation; Pulse width modulation; Pulse width modulation converters; Reactive power; Resonance; Space vector pulse width modulation; Stress; Zero voltage switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Conference_Location :
Paris
ISSN :
1553-572X
Print_ISBN :
1-4244-0390-1
Type :
conf
DOI :
10.1109/IECON.2006.347993
Filename :
4153584
Link To Document :
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