Digitally Controlled Boost PFC Converters Operating with Large Scale Load Fluctuations
When boost power factor correction （PFC） circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower power factor because of traditional controllers and inductor cur- rent mode. To solve this problem, this paper proposes a PFC control system,...
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| Published in | Transactions of Tianjin University Vol. 20; no. 4; pp. 292 - 298 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Heidelberg
Tianjin University
01.08.2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1006-4982 1995-8196 |
| DOI | 10.1007/s12209-014-2194-x |
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| Abstract | When boost power factor correction （PFC） circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower power factor because of traditional controllers and inductor cur- rent mode. To solve this problem, this paper proposes a PFC control system, which can operate with load fluctuations up to 1 000 W by using duty cycle feed-forward control theory to achieve smooth switching mode. The duty cycles in the next period of the control system are pre-estimated in the current cycle, which enhances the speeds of AD samplers and switching frequency, and reduces the cost and volume of the equipment to some extent. Introductions of system decoupling and feed-forward of input-voltage greatly improve the system performance. Both theoretical simulation and experimental results prove the advantage of the proposed scheme. |
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| AbstractList | When boost power factor correction (PFC) circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower power factor because of traditional controllers and inductor cur-rent mode. To solve this problem, this paper proposes a PFC control system, which can operate with load fluctuations up to 1 000 W by using duty cycle feed-forward control theory to achieve smooth switching mode. The duty cycles in the next period of the control system are pre-estimated in the current cycle, which enhances the speeds of AD samplers and switching frequency, and reduces the cost and volume of the equipment to some extent. Introductions of system decoupling and feed-forward of input-voltage greatly improve the system performance. Both theoretical simulation and experimental results prove the advantage of the proposed scheme. When boost power factor correction （PFC） circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower power factor because of traditional controllers and inductor cur- rent mode. To solve this problem, this paper proposes a PFC control system, which can operate with load fluctuations up to 1 000 W by using duty cycle feed-forward control theory to achieve smooth switching mode. The duty cycles in the next period of the control system are pre-estimated in the current cycle, which enhances the speeds of AD samplers and switching frequency, and reduces the cost and volume of the equipment to some extent. Introductions of system decoupling and feed-forward of input-voltage greatly improve the system performance. Both theoretical simulation and experimental results prove the advantage of the proposed scheme. When boost power factor correction (PFC) circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower power factor because of traditional controllers and inductor current mode. To solve this problem, this paper proposes a PFC control system, which can operate with load fluctuations up to 1 000 W by using duty cycle feed-forward control theory to achieve smooth switching mode. The duty cycles in the next period of the control system are pre-estimated in the current cycle, which enhances the speeds of AD samplers and switching frequency, and reduces the cost and volume of the equipment to some extent. Introductions of system decoupling and feed-forward of input-voltage greatly improve the system performance. Both theoretical simulation and experimental results prove the advantage of the proposed scheme. |
| Author | 刘艳莉 王清龙 王宇翠 张烨 朱乐为 |
| AuthorAffiliation | School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China |
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| Cites_doi | 10.1109/TPEL.2011.2180927 10.1109/TPEL.2004.836675 10.1109/TIE.2004.841133 10.1109/TIE.2004.841131 10.1109/TPEL.2012.2188106 10.1109/TPEL.2010.2051458 10.1109/TIE.2007.892252 10.1109/TPEL.2004.826439 10.1049/iet-pel.2011.0086 10.1109/TIE.2003.817609 10.1109/TIA.2011.2153815 10.1109/TIE.2010.2052538 |
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| Keywords | large scale load fluctuation power factor correction (PFC) feed-forward input voltage system decoupling |
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| Notes | When boost power factor correction （PFC） circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower power factor because of traditional controllers and inductor cur- rent mode. To solve this problem, this paper proposes a PFC control system, which can operate with load fluctuations up to 1 000 W by using duty cycle feed-forward control theory to achieve smooth switching mode. The duty cycles in the next period of the control system are pre-estimated in the current cycle, which enhances the speeds of AD samplers and switching frequency, and reduces the cost and volume of the equipment to some extent. Introductions of system decoupling and feed-forward of input-voltage greatly improve the system performance. Both theoretical simulation and experimental results prove the advantage of the proposed scheme. Liu Yanli, Wang Qinglong, Wang Yucui, Zhang Ye, Zhu Lewei（School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China） 12-1248/T power factor correction （PFC）; large scale; load fluctuation; system decoupling; feed-forward; input voltage |
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| Snippet | When boost power factor correction （PFC） circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower... When boost power factor correction (PFC) circuit works with large scale load fluctuations, it is easy to cause a higher total harmonic distortion and a lower... |
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| SubjectTerms | Engineering Humanities and Social Sciences Mechanical Engineering multidisciplinary PFC Science 功率因数校正 升压式 控制系统 数字控制 电路工作原理 负载 转换器 |
| Title | Digitally Controlled Boost PFC Converters Operating with Large Scale Load Fluctuations |
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