本篇論文針對三種具有低頻漣波電流補償電路的單相交流╱直流轉換器作損失的分析。在單相與市電並聯的系統中，二倍頻的脈動功率為最重要的議題之一，傳統的解決方法為使用大容值的電解質電容，然而一般應用於太陽能發電系統中的單相直流╱交流轉換器對於壽命的要求非常高，如果使用電解質電容可能會縮短整體轉換器的壽命，而沒辦法達到轉換器所要求的壽命年限，因此使用主動濾波電路逐漸成為了一種趨勢，此種電路架構透過功率解耦電路來補償單相交流╱直流轉換時產生的二倍頻功率，可有效的將二倍頻的功率透過功率解耦電路儲存至功率解耦之儲能電容，而降低直流側濾波電容的容值，因此直流側濾波電容及功率解耦電路上的儲能電容皆可使用薄膜電容來取代，此外，功率解耦電路採用同步開關的操作模式，整體電路具有雙向功率傳輸的能力，對於交流╱直流轉換的系統，使用上更是便利。

由於功率解耦電路會造成額外的損失，因此本文將針對電感上的銅損、鐵損、開關元件的導通損及切換損失作量化的分析，估計在不同切換頻率和平均工作週期下的平均功率損失，透過分析的結果來選用最適合的開關元件及操作點，藉以提升整體電路的效率。本論文中會先對功率解耦電路之電路架構及工作原理作介紹，並在功率解耦電路能夠完全補償低頻功率的條件下，針對開關及電感的功率損失作詳盡的說明，最後透過實驗的結果來驗證損失分析的精確度。

This thesis compares three kinds of power decoupling circuits of single phase AC/DC converters .The converters have Power factor correction and bidirectional power flow capability and compensate the pulsating power at twice the grid frequency by power decoupling circuits. In order to improve the overall efficiency of DC/AC converter, an overall power loss analysis was conducted. The proposed methods compensate the pulsating power at twice the grid frequency by circulating the reactive power through power decoupling capacitor; the capacitance which used in dc bus can be eliminated. The elaborate calculation of conduction loss, switching loss, reverse recovery loss, copper loss, and core loss are presented to give a quantitative analysis of power loss, through losses analysis to choose the suitable switches and use optimal inductance to improve efficiency. This thesis will explain the principles of operations of the proposed methods, and experimental results will also be presented for validation.

第一章 緒論
1.1簡介
1.2研究方向
1.3論文架構
第二章 文獻回顧
2.1介紹
2.2降壓型功率解耦電路之單相交流╱直流轉換器
2.2.1功率解耦能力
2.2.2輸入純虛功
2.3升壓型功率解耦電路之單相交流╱直流轉換器
2.3.1電流諧波注入
2.3.2輸入純虛功
2.3.3功率解耦能力
2.4結論
第三章 單相交流╱直流轉換器的損失估計
3.1介紹
3.2濾波電感
3.3鐵損
3.4銅損
3.5導通損失(conduction loss)
3.6切換損失(switching loss)
3.7背接二極體反向恢復損失(reverse recovery loss)
3.8降壓型功率解耦電路
3.8.1鐵損
3.8.2銅損及導通損失
3.8.3切換損失
3.8.4反向恢復損失
3.9升壓型功率解耦電路
3.9.1鐵損
3.9.2銅損及導通損失
3.9.3切換損失
3.9.4反向恢復損失
3.10升降壓型功率解耦電路
3.10.1升降壓型整流器操作原理
3.10.2功率解耦方法
3.10.3輸出純虛功
3.10.4鐵損
3.10.5銅損及導通損失
3.10.6切換損失
3.10.7反向恢復損失
3.11單相全橋式轉換器
3.11.1諧波電流分析
3.11.2鐵損
3.11.3銅損及導通損失
3.11.4切換損失
3.11.5反向恢復損失
3.12結論
第四章 模擬結果
4.1介紹
4.2模擬參數設定
4.3降壓型功率解耦電路
4.3.1交流側從純實功轉變成純虛功輸出
4.4升壓型功率解耦電路
4.4.1降頻操作
4.4.2交流側諧波電流注入
4.4.3交流側從純實功轉變成純虛功輸出
4.5升降壓型功率解耦電路
4.5.1交流側從純實功轉變成純虛功輸出
第五章 實驗結果及分析
5.1介紹
5.2實驗參數
5.3交流╱直流轉換
5.3.1升壓型解耦電路
5.4直流╱交流轉換
5.4.1降壓型功率解耦電路
5.4.2升壓型功率解耦電路
5.5效率量測
5.5.1全橋轉換器
5.5.2降壓型功率解耦電路
5.5.3升壓型功率解耦電路
5.6歐洲效率規範(European efficiency)
5.7比例諧波電流補償
5.8結論
第六章 結論及未來工作
6.1結論
6.2未來工作
參考文獻

[1]J. C. Das, “Passive filters - potentialities and
limitations,” IEEE Trans. Ind. Application., vol. 40,
no. 1, pp. 232-241, Mar./Apr. 2004.

[2]Shimizu, T.; Fujita, T.; Kimura, G.; Hirose, J, "A unity
power factor PWM rectifier with DC ripple compensation,"
Industrial Electronics, IEEE Transactions on , vol.44,
no.4, pp.447-455, Aug 1997

[3]Kuo-Hen Chao; Po-Tai Cheng; Shimizu, T, "New control
methods for single phase PWM regenerative rectifier with
power decoupling function," Power Electronics and Drive
Systems, 2009. PEDS 2009. International Conference on ,
pp.1091-1096, 2-5 Nov. 2009.

[4]Kuo-Hen Chao; Po-Tai Cheng, "Power decoupling methods
for single-phase three-poles AC/DC converters," Energy
Conversion Congress and Exposition,2009. ECCE 2009.IEEE,
pp.3742-3747, 20-24 Sept. 2009.

[5]R. Erickson and D. Maksimovic, Fundamentals of Power
Electronics,1nd ed.Boulder, Colorado: Kluwer Academic
Publishers, 1999, pp.471-474.

[6]Shimizu, T.; Iyasu, S, "A Practical Iron Loss
Calculation for AC Filter Inductors Used in PWM
Inverters," Industrial Electronics, IEEE Transactions
on , vol.56, no.7, pp.2600-2609, July 2009.


[7]Shimizu, T.; Wada, K.; Nakamura, N.; , "Flyback-Type
Single-Phase Utility Interactive Inverter With Power
Pulsation Decoupling on the DC Input for an AC
Photovoltaic Module System," Power Electronics, IEEE
Transactions on , vol.21,no.5, pp.1264-1272, Sept. 2006.

[8]Wang, J.B.; Li, R.; Joe Chen, "Efficiency comparison of
the full bridge converters in considered magnetic
saturation," Industrial Electronics, 2008.IECON 2008.
34th Annual Conference of IEEE, pp.717-722, 10-13 Nov.
2008.

[9]Kouro, S.; Perez, M.; Robles, H.; Rodriguez,J,
"Switching loss analysis of modulation methods used in
cascaded H-bridge multilevel converters," Power
Electronics Specialists Conference, 2008. PESC 2008.
IEEE, pp.4662-4668, 15-19 June 2008.

[10]Hava, A.M.; Kerkman, R.J.; Lipo, T.A, "Simple
analytical and graphical methods for carrier-based PWM-
VSI drives," Power Electronics, IEEE Transactions on ,
vol.14, no.1, pp.49-61, Jan 1999.

[11]R. Erickson and D. Maksimovic, Fundamentals of Power
Electronics,2nd ed.Boulder, Colorado: Kluwer Academic
Publishers, 2001, pp.96-97.

[12]N. Mohan, T. Undeland, and W. P. Robbins, Power
Electronics Converters Applications and Design, 3rd ed.
111 River street Hoboken,NJ:John Wiley and sons, 2003,
pp. 21-23,pp. 535-539.

[13]Hyosung Kim; Kyoung-Hwan Kim, "Filter design for grid
connected PVinverters," Sustainable Energy
Technologies, 2008. ICSET 2008. IEEE International
Conference on, pp.1070-1075, 24-27 Nov. 2008.

[14]Chee Lim Nge; Midtgard, O.-M.; Norum, L.; Saetre,
T.O, "Power loss analysis for single phase grid-
connected PV inverters," Telecommunications Energy
Conference, 2009. INTELEC 2009. 31st International,
pp.1-5, 18-22 Oct. 2009.

[15]Berasategi, A.; Cabal, C.; Alonso, C.; Estibals,
B, "European efficiency improvement in photovoltaic
applications by means of parallel connection of
power converters," Power Electronics and Applications,
2009. EPE '09. 13th European Conference on, pp.1-10, 8-
10 Sept. 2009.