A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller

The quality of distributed electrical power has become an acute concern in recent years. In order to comply with the requirements of international standards of harmonics emission in most of the AC-DC switched mode power supply, power factor correction is essential. Power factor correction in switche...

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Main Author:	Liau , Wei Chun
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TK7800-8360 Electronics
Online Access:	http://eprints.usm.my/41222/1/LIAU_WEI_CHUN_24_Pages.pdf
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id	my-usm-ep.41222
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spelling	my-usm-ep.412222018-08-01T07:22:11Z A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller 2013 Liau , Wei Chun TK7800-8360 Electronics The quality of distributed electrical power has become an acute concern in recent years. In order to comply with the requirements of international standards of harmonics emission in most of the AC-DC switched mode power supply, power factor correction is essential. Power factor correction in switched mode power supply has been implemented with analog controller conventionally. The mature manufacturing technologies in digital devices has led to the proliferation of powerful yet low cost digital controllers and enable the possibility of digital power factor correction implementation in a more competitive way. A digital control technique for power factor correction using pre-calculated algorithm with a low cost 8-bit microcontroller is studied and presented in this paper. Based on this technique, the duty cycles for half a line period are computed offline and stored into the device memory. A nearly unity power factor can be achieved based on the AC voltage line synchronization with the look up table in the memory at specific operating point. The primary advantages of this strategy are neither current measurement nor powerful yet expensive digital device are required. A prototype of boost power factor correction controlled by an 8-bit microcontroller development board was set up to implement the proposed technique. Both simulation and experimental results are showing positive trend that the proposed strategy for power factor correction achieves near unity power factor. 2013 Thesis http://eprints.usm.my/41222/ http://eprints.usm.my/41222/1/LIAU_WEI_CHUN_24_Pages.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Elektrik dan Elektronik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TK7800-8360 Electronics
spellingShingle	TK7800-8360 Electronics Liau , Wei Chun A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller
description	The quality of distributed electrical power has become an acute concern in recent years. In order to comply with the requirements of international standards of harmonics emission in most of the AC-DC switched mode power supply, power factor correction is essential. Power factor correction in switched mode power supply has been implemented with analog controller conventionally. The mature manufacturing technologies in digital devices has led to the proliferation of powerful yet low cost digital controllers and enable the possibility of digital power factor correction implementation in a more competitive way. A digital control technique for power factor correction using pre-calculated algorithm with a low cost 8-bit microcontroller is studied and presented in this paper. Based on this technique, the duty cycles for half a line period are computed offline and stored into the device memory. A nearly unity power factor can be achieved based on the AC voltage line synchronization with the look up table in the memory at specific operating point. The primary advantages of this strategy are neither current measurement nor powerful yet expensive digital device are required. A prototype of boost power factor correction controlled by an 8-bit microcontroller development board was set up to implement the proposed technique. Both simulation and experimental results are showing positive trend that the proposed strategy for power factor correction achieves near unity power factor.
format	Thesis
qualification_level	Master's degree
author	Liau , Wei Chun
author_facet	Liau , Wei Chun
author_sort	Liau , Wei Chun
title	A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller
title_short	A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller
title_full	A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller
title_fullStr	A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller
title_full_unstemmed	A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller
title_sort	study and development of digital control technique for power factor correction using pre-calculated algorithm with a low cost 8-bit microcontroller
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Elektrik dan Elektronik
publishDate	2013
url	http://eprints.usm.my/41222/1/LIAU_WEI_CHUN_24_Pages.pdf
_version_	1747820891009449984

A Study And Development Of Digital Control Technique For Power Factor Correction Using Pre-Calculated Algorithm With A Low Cost 8-Bit Microcontroller

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