交錯式升壓型功率因數修正轉換器之設計與研製｜國立臺灣科技大學博碩士論文系統

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研究生：	Thuc Duy Nguyen Thuc - Duy Nguyen
論文名稱：	交錯式升壓型功率因數修正轉換器之設計與研製 Design and Implementation of an Interleaved Boost PFC Converter
指導教授：	劉益華 Yi-Hua Liu 邱煌仁 Huang-Jen Chiu 謝耀慶 Yao-Ching Hsieh
口試委員:	劉宇晨 Dr. Yu-Chen Liu
學位類別：	碩士 Master
系所名稱：	電資學院 - 電機工程系 Department of Electrical Engineering
論文出版年：	2016
畢業學年度：	104
語文別：	英文
論文頁數：	77
中文關鍵詞：	功率因數修正、交錯式、數位控制、電流取樣修正、責任週期前饋、動態PID補償器
外文關鍵詞：	Power Factor Correction, Interleaved, Digital Control, Current Sample Correction, Duty Ratio Feedforward, Adaptive PID Compensator
相關次數：	點閱：379 下載：32
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功率因數修正轉換器已經廣泛的應用在工業上，例如離線式交流-直流電源供應器。功率因數修正轉換器主要的任務是讓輸入電流以及輸入電壓同相位，用以減少虛功率以及高次電流諧波。在大功率的應用下，傳統的升壓型功率因數修正轉換器因為考慮成本以及簡單的應用，常使用類比IC進行控制，例如UC3854。然而，隨著國際組織嚴厲的電力品質要求規範，例如IEC 61000-3-2，類比控制器在功率因數修正轉換器會逐漸地被淘汰。因為微處理器的技術發展使得數位控制器更加便宜以及強大，數位控制器將會變得更有優勢以替代類比控制器。此外，數位控制器更有可能利用複雜的控制演算法提升功率因數修正轉換器的整體效率，以致於可以達成較高的功率因數、較低的總諧波失真、快速的動態響應以及更佳的系統保護。本論文提出了3kW交錯式升壓型轉換器之研製，該轉換器使用的控制器為UCD 3138。使用電流取樣修正、責任週期前饋和動態PID補償降低總諧波失真。實驗結果在所有的條件下，功率因數高於0.92、總諧波失真皆低於7%。

Power Factor Correction (PFC) converters are widely used in industry as off-line AC-DC power supplies. Its main task is shaping the input current to be in phase and in shape with input voltage to minimize the reactive power drawn from AC mains and reduce the presence of high-order current harmonics. In high-power applications, conventionally, boost PFC converter is always controlled by analog ICs such as UC3854 because of its cost-effectiveness and ease of implementation. However, with more stringent power quality norms required by international organizations, such as IEC61000-3-2, the use of analog controller for PFC will gradually become obsolete. Instead, digital controllers will become dominant because of the development of microprocessor technology which allows them to become cheaper and more powerful. Moreover, it is possible to implement complex control algorithms to improve the overall performance of PFC system, so that higher power factor, lower total harmonic distortion, faster dynamic response, and better system protection can be achieved.
In this thesis, a 3-kW interleaved boost converter is designed and implemented. This converter uses UCD3138 as its controller. Current Sample Correction, Duty Ratio Feedforward, and Adaptive PID Compensator methods are employed to reduce the total harmonic distortion. Experimental results showed that the output DC voltage is well-regulated, power factor (PF) is greater than 0.92, and total harmonic distortion (iTHD) is lower than 7% in all cases.

摘要	i
Abstract	ii
Acknowledgement	iv
Table of Contents	v
List of Figures	viii
List of Tables	xi
List of Abbreviations	xii
Chapter 1. Introduction	1
1. Background and Motivation	1
2. Organization of Thesis	3
Chapter 2. Literature Review	5
1. Definition of Power Factor	5
2. Interleaved Boost Power Factor Correction Topology	7
3. Modelling of PFC Control System with Average Current Control	9
3.1. Control Structure	9
3.2. Modelling of Current Loop	10
3.3. Modelling of Voltage Loop	15
Chapter 3. Digital Implementation of the 2-phase Interleaved PFC Converter	18
1. Digital Proportional-Integral-Derivative (PID) Compensator	18
2. Compensators Design	20
2.1. Introduction to Fusion Digital Power Designer	20
2.2. Design of Current Compensators	23
2.3. Design of Voltage Compensators	24
3. Methods for Improving iTHD	25
3.1. Current Sample Correction	25
3.2. Duty Ratio Feedforward for Mixed Conduction Mode (MCM)	28
3.3. Adaptive PID Method for Current Compensators	34
Chapter 4. Hardware and Firmware Implementation for the 3-kW 2-phase Interleaved PFC Converter	35
1. Converter Specifications	35
2. Components Design for 3-kW 2-phase Interleaved PFC	35
2.1. Design of Power Stage’s Components	35
2.2. Design of Measurement Circuitries	38
3. Introduction to the Integrated Digital Controller UCD3138	40
4. Hardware Design	41
4.1. Design of Power Stage	42
4.2. Design of Control Card	43
5. Firmware Design and Implementation	44
5.1. PFC Machine States	44
5.2. PFC Firmware Flow Diagrams	45
Chapter 5. Experimental Results	47
1. Experimental Setup	47
2. Experimental Waveforms	49
2.1. Experimental Waveforms without Using Any iTHD Improvements Method	49
2.2. Experimental Waveform with Sample Correction and Duty-Ratio Feedforward	51
2.3. Experimental Waveform with Adaptive PID Compensators for Current Loops	53
3. Measurement Data	55
Chapter 6. Conclusions and Future Work	58
1. Conclusions	58
2. Future Work	59
References	60

                                

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