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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/16600完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳德玉 | |
| dc.contributor.author | Yu-Cheng Lin | en |
| dc.contributor.author | 林育政 | zh_TW |
| dc.date.accessioned | 2021-06-07T18:23:02Z | - |
| dc.date.copyright | 2012-01-17 | |
| dc.date.issued | 2011 | |
| dc.date.submitted | 2011-10-14 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/16600 | - |
| dc.description.abstract | 近年來，直流電能轉換器之數位控制受到廣泛的討論與研究。在本論文中，主要提出兩種數位控制方法以改善直流電能轉換器之性能。第一種方法可實現可控制直流輸出負載線之直流電能轉換器；第二種方法是在負載電流發生步階變化時，控制器可使輸出電壓有快速的暫態響應。
首先，本論文先回顧直流電能轉換器之數位控制之理論與技術，其主要以傳統類比控制理論為基礎。基於此基礎，一種新型數位控制方法被提出，其主要是藉著LSB (Least Significant Bit)的調整而達到可控制直流輸出負載線之直流電能轉換器，但又不影響系統的穩定度，並且可在直流電能轉換器運作時，輕易地改變直流電能轉換器之直流輸出負載線。此方法不易以類比控制電路實現。 此外，一種數位控制方法被提出，其主要是在負載電流發生步階變化時，控制器可使輸出電壓有快速的暫態響應。此控制方法主要藉著量測輸出電壓，由量測到的輸出電壓值，即時算出功率電晶體全開與全關的時間，藉著功率電晶體開關一次的動作所達成。 本論文所提出的兩種數位控制方法都以實驗加以驗證。 | zh_TW |
| dc.description.abstract | Digital control of DC power converters has been an important research topic in recent years. In this dissertation, two digital control methods are proposed to improve the DC converter performances. One of the methods deals with variable load line feature and the other deals with step-load transient response.
A review of digital control of power converters is first given from the point of view of conventional DC converter with analog feedback control. From the review, a novel digital feedback control scheme is proposed. It uses digital LSB (Least Significant Bit) tuning to achieve an adjustable converter DC load line without affecting the stability behavior of the system, and this can be done smoothly while the converter is in operation. The opens up new possibilities of applications an analog-controlled converter can’t achieve. Besides, a digitally control algorithm is proposed to provide fast output-voltage transient response to step-load changes. This involves sensing the converter output voltage and on-line calculation of the transistor on-time and off-time in a one-step on-off switching during the transient period. Both the methods mentioned above were experimentally verified. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-07T18:23:02Z (GMT). No. of bitstreams: 1 ntu-100-F94921018-1.pdf: 3073748 bytes, checksum: 5433c3a479e8f51b254337034dfa5ae5 (MD5) Previous issue date: 2011 | en |
| dc.description.tableofcontents | 致謝 I
中文摘要 II Abstract III Table of Contents IV List of Figures VII List of Tables XI Chapter 1 Introduction 1 1-1 Research Motivation 1 1-2 Literature Survey 2 1-3 Dissertation Outline 7 Chapter 2 Brief Review of Digital Feedback Control for DC-DC Converters 8 2-1 Introduction 8 2-2 Description of a Digitally Controlled Buck Converter 8 2-3 Review of Digital Controller Effects 9 2-3-1 Truncation Error and Numerical Representation in a Digital Controller 10 2-3-2 Limit Cycle Oscillation………………………………………………..12 2-3-3 Delay Effects…………………………………………………………..15 2-4 Modeling of a Voltage-Mode Digitally-Controlled Buck Converters 20 2-4-1 Discrete Equivalence of an Analog Controller 20 2-4-2 Implementation of Digital Real Time Controller 21 2-4-3 S-Domain Model of a Digitally Controlled Voltage-Mode Buck Converters 23 2-4-4 Usage of the Model 25 Chapter 3 A Proposed Loop Gain Adjusting Scheme Using LSB Tuning…………..30 3-1 Introduction 30 3-2 DC Gain of a Digital Compensator 30 3-3 A Proposed Gain-Adjustment Application by Tuning the LSB 36 3-3-1 The Effects of DC Loop Gain on the Converter Output Load Line 38 3-4 A Proposed Variable Load-Line Converters Using Digital Tuning 40 3-4-1 Experimental Examples of a Variable-Load-Line Converter 40 3-5 Choice of Coefficients for Tuning 48 Chapter 4 Digital Control for Fast Step Load Transient 51 4-1 Introduction 51 4-2 Description of Charge Balance Control Mechanism 52 4-3 Control Strategy for Fast Step Load Transient 55 4-3-1 Derivation of Equation for Output Voltage Vo(t) during Transient 56 4-3-2 Equations for Estimating Step Load Transient Current ΔIo Using the Output Voltage Equation 59 4-3-3 Derivation of Charge Balance Control Algorithm Using Estimating Step Load Transient Current ΔIo 62 4-3-4 Design Flow Chart 67 4-3-5 Simulated and Experimental Results 68 4-4 Algorithms for Fast Step Load Transient in DC-DC Buck Converters with AVP 73 4-4-1 Derivation of Charge Balance Control Algorithm with AVP 75 4-4-2 Design Flow Chart 78 4-4-3 Simulated and Experimental Results 80 Chapter 5 Conclusions and Suggestions for Further Research 83 5-1 Conclusions 83 5-2 Suggestions for Further Research 84 Appendix A. Analysis of Pole Position Shift Percentage due to Round-Off Effect 85 Appendix B. Investigation of Stability Issue of a DC Converter with Eigen-Value Analysis 89 Reference 92 Vita 100 | |
| dc.language.iso | en | |
| dc.subject | 可變負載線直流電能轉換器 | zh_TW |
| dc.subject | 數位電荷平衡控制 | zh_TW |
| dc.subject | 數位控制 | zh_TW |
| dc.subject | 最小位元調整 | zh_TW |
| dc.subject | Digitally Charge Balance Control | en |
| dc.subject | Digital Control | en |
| dc.subject | LSB Tuning | en |
| dc.subject | Variable Load Line Converters | en |
| dc.title | 直流-直流電源轉換器之迴路增益調整與負載暫態響應改善之新型數位控制方法 | zh_TW |
| dc.title | Novel Digital Methods for Loop-Gain Tuning and Step-Load Transient Response Improvement for DC-DC Converters | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 100-1 | |
| dc.description.degree | 博士 | |
| dc.contributor.oralexamcommittee | 許源浴,劉志文,邱煌仁,呂錦山,張煒旭 | |
| dc.subject.keyword | 數位控制,最小位元調整,可變負載線直流電能轉換器,數位電荷平衡控制, | zh_TW |
| dc.subject.keyword | Digital Control,LSB Tuning,Variable Load Line Converters,Digitally Charge Balance Control, | en |
| dc.relation.page | 100 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2011-10-17 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電機工程學研究所 | zh_TW |
| 顯示於系所單位： | 電機工程學系 | |
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| ntu-100-1.pdf 未授權公開取用 | 3 MB | Adobe PDF |
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