研究生: |
黃健淳 Chien-Chun Huang |
---|---|
論文名稱: |
具高頻寬低雜訊之寬範圍輸出雙向直流-直流電能轉換器 A Wide-Output-Range Bi-directional DC-DC Converter with High-Bandwidth and Low-Switching-Noise Features |
指導教授: |
邱煌仁
Huang-Jen Chiu 謝耀慶 Yao-Ching Hsieh |
口試委員: |
呂景山
Ching-Shan Leu 劉益華 Yi-Hua Liu 劉邦榮 Pang-Jung Liu 邱煌仁 Huang-Jen Chiu 謝耀慶 Yao-Ching Hsieh |
學位類別: |
博士 Doctor |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2019 |
畢業學年度: | 107 |
語文別: | 中文 |
論文頁數: | 178 |
中文關鍵詞: | 高頻寬 、寬範圍調壓 、切換雜訊 、輸出電流漣波 、雙向直流- 直流轉換器 、四階濾波器 |
外文關鍵詞: | high-frequency bandwidth, wide range voltage regulation, switching noise, output current ripple, bidirectional DC-DC converter, fourth-order filter |
相關次數: | 點閱:265 下載:52 |
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本論文目標為提出一具備極低的輸出切換雜訊、極低的輸出電流
漣波、高頻寬、可寬範圍調壓的雙向直流-直流電源轉換器。為達到此
目的,本論文先從濾波器之非理想特性與輸入濾波器波形之傅立葉分
析來探討切換雜訊的成因,其後針對分析結果將本論文分為三個方向
進行研究:一,減少元件上的寄生元件使濾波器趨近理想;二,減緩
濾波器的輸入電壓變化斜率,減少輸入訊號之高頻成分;三,減少流
入輸出電容的漣波電流變化量與漣波值,降低輸出電容之寄生電感造
成的切換雜訊。研究方向一,先了解寄生元件的成因以降低其值,爾
後嘗試利用外接線路做為補償寄生元件,分析其應用與限制。研究方
向二,本文提出一新型之雙邊零電壓切換雙向直流-直流轉換器來同
時減緩輸入濾波器電壓波形之上升與下降斜率。由實作結果可知,藉
由新型轉換器可有效將切換雜訊減少76.9%。研究方向三,為滿足極
低的輸出電流漣波規格與進一步降低切換雜訊,本文繼而分別討論主
動型消除與被動型電流漣波消除技術。比較各種方式之優缺點後,因
考量輸出切換雜訊,最終選用四階LCLC 濾波器作為解決方案。針對
四階濾波器的元件設計提出一快速概算流程,且以降壓型轉換器搭配
四階濾波器推導小訊號模型,分析其四階濾波器的設計選擇對於小訊
號輸出阻抗的影響,並提供一電壓與電流回授補償之補償器設計流程。
最後以模擬驗證小訊號模型的正確性與閉迴路的系統表現。
The goal of this thesis is to propose a bidirectional DC-DC power
converter with the extremely low output switching noise, very low output
current ripple, high-frequency bandwidth, and wide range voltage
regulation. In order to achieve this goal, this paper first discusses the cause
of switching noise from the non-ideal characteristics of the filter and the
Fourier analysis of the input filter waveform. Then the paper divides the
paper into three directions for the analysis results: First, reduce the parasitic
components on the component make the filter close to ideal; second, slow
down the slope of the input voltage of the filter, reduce the high frequency
component of the input signal; third, reduce the ripple current variation and
ripple value into the output capacitor, and reduce the output switching noise
caused by the parasitic inductance of the capacitor. In the first direction of
research, first, understand the cause of parasitic components to reduce their
values, and then try to use external circuits as compensation for parasitic
components, and analyze their applications and limitations. In the second
direction of research, this paper proposes a new type of bilateral zerovoltage
switching bidirectional DC-DC converter to simultaneously slow
down the rising and falling slopes of the input filter voltage waveform. As
a result of the implementation, it is known that the switching noise can be
effectively reduced by 76.9% by the new converter. In the third direction
of research, in order to meet the extremely low output current chopping
specifications and further reduce the switching noise, this paper then
discusses the active elimination and passive current chopping cancellation
techniques. After comparing the advantages and disadvantages of various
methods, considering the output switching noise, the fourth-order LCLC
filter is finally selected as the solution. A fast estimation procedure is
proposed for the component design of the fourth-order filter, and the small signal model is derived by using the buck converter with the fourth-order
filter, and the influence of the design choice of the fourth-order filter on the
output impedance of the small signal is analyzed. Compensator design flow
for voltage and current feedback compensation. Finally, the simulation
verifies the correctness of the small signal model and the performance of
the closed-loop system.
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