本文利用數位信號處理器設計一單級式三相光伏能量轉換系統，並利用此數位信號處理器提出一最大功率追蹤控制策略，使最大功率追蹤之過程更為快速且平順。本光伏能量轉換系統採單一電流迴路控制，使得控制器設計更為簡潔，並可同時完成最大功率追蹤及輸出單位功因的能量到市電端之目標。此光伏能量轉換系統在晴天時，可做太陽能發電之用；在日照不足時則可做為主動電力濾波器之用，如此可避免因為照度不足而無法工作的困境。最後，以實驗結果驗證此方法之可行性。

The study and implementation of a DSP-based digital controller for the single-stage three-phase photovoltaic（PV） energy conversion system is proposed in this thesis. The proposed maximum power point tracking strategy allows PV energy conversion system to track the maximum power point rapidly and smoothly. The proposed PV energy conversion system acts as a solar generator on sunny days and as an active power filter under low insolation conditions. In addition, the proposed controller performs maximum power point tracking and also provides power to utility with unity power factor. Moreover, the current controller with single loop is simple and easy to design, as compared with the conventional double loop controller. Finally, experimental results demonstrate the desired performance of the proposed technique.

[1] J. H. R. Enslin, M. S. Wolf, D. B. Snyman, and W. Sweigers, “Integrated photovoltaic maximum power point tracking converter,” IEEE Transactions on Industrial Electronics, Vol. 44, No. 6, pp. 769-773, 1997.
[2] T. Hiyama, S. Kouzuma, and T. Imakubo, “Identification of optimal operating point of PV modules using neural network for real time maximum power tracking control,” IEEE Transactions on Energy Conversion, Vol. 10, No. 2, pp. 360-367, 1995.
[3] T. Hiyama, S. Kouzuma, and T. Imakubo, “Evaluation of neural network based maximum power tracking controller for PV system,” IEEE Transactions on Energy Conversion, Vol. 10, N o. 3, pp. 543-548, 1995.
[4] I. H. Altas and A. M. Sharaf, “A novel on-line MPP search algorithm for PV arrays,” IEEE Transactions on Energy Conversion, Vol. 11, No. 4, pp. 748-754, 1996.
[5] B. K. Bose, P. M. Szczeny, and R. L. Steigerwald, “Microcomputer control of a residential photovoltaic power conditioning system,” IEEE Transactions on Industry Applications, Vol. IA-21, No. 5, pp. 1182-1191, 1985.
[6] C. Hua, J. Lin, and C. Shen, “Implementation of a DSP-controlled photovoltaic system with peak power tracking,” IEEE Transactions on Industrial Electronics, Vol. 45, No. 1, pp. 99-107, 1998.
[7] K. H. Hussein, I. Muta, T. Hoshino, and M. Osakada, “Maximum photovoltaic power tracking: an algorithm for rapidly changing atmospheric conditions,” IEE Proceedings- Generations Transmissions and Distributions., Vol. 142, No. 1, pp. 59-64, 1995.
[8] Y. C. Kuo, T. J. Liang, and J. F. Chen , “Novel maximum power point tracking controller for photovoltaic energy conversion system,” IEEE Transactions on Industrial Electronics, Vol.48, No.3, pp. 594-601, 2001.
[9] S. J. Chiang, K. T. Chang, and C. Y. Yen, “Residential photovoltaic energy storage system,” IEEE Transactions on Industrial Electronics, Vol.45, No.3, pp. 385-394, 1998.
[10] H. Sugimoto and H. Dong, “A new scheme for maximum photovoltaic power tracking control,” IEEE PCC-Nagaoka'97, pp. 691-696, 1997.
[11] S. J. Chiang and C. M. Liaw, “Single-phase three-wire transformerless inverter,” IEE Proceedings- Electric Power Applications, Vol.141, No.4, pp.197-205, 1994.
[12] T. Markvart , “Solar electricity,” John Wiley & Sons Inc., 1994.
[13] Y. C. Kuo, T. J. Liang, and J. F. Chen , “A High-efficiency single-phase three-wire photovoltaic energy conversion system,” IEEE Transactions on Industrial Electronics, Vol.50, No.1, pp. 116-122, 2003.
[14] 郭永超, “單級式光伏能量轉換系統之設計,” 國立成功大學博士論文，中華民國90年。
[15] N. Mohan, T. M Undeland, and W. P. Robbins, “Power Electronics: Converters, Application and Design,” John Wiley & Sons Inc., 1995.
[16] 朱慶隆, “變流器並聯運轉與其在UPS燒機測試系統之應用,” 國立成功大學博士論文,中華民國84年。
[17] 蔡明村, “並聯供電系統之設計與實現,” 國立成功大學博士論文,中華民國85年。
[18] N. Abdel-Rahim and J. E. Quaicoe, “Three-phase voltage-source UPS inverter with voltage-controlled current-regulated feedback control scheme,” Industrial Electronics, Control and Instrumentation, pp. 497-502, 1994.
[19] R. Wu, S. B. Dewan, and G. R. Slemon, “Analysis of an ac-to-dc voltage Source converter using PWM with phase and amplitude control,” IEEE Transactions on Industry Applications, vol.27, NO.2, 1991.
[20] H. L. Jou, J. C. Wu, and H. Y. Chu, “New single-phase active power filter,” IEE Proc. Electr. Power Appl., Vol.141, NO.3, 1994.
[21] C. Y. Hsu and H. Y. Wu, “A new single-phase active power filter with reduced energy-storage capacity,” IEE Proc. Electr. Power Appl., Vol.143, NO.1, 1996.
[22] B. Singh, K. Al-Haddad, and A. Chandra, “A universal active power filter for single-phase reactive power and harmonic compensation,” Power Quality, pp. 81-87, 1998.
[23] 郭鴻熹, “三相併聯型主動式電力濾波器之分析與控制,” 國立台灣科技大學博士論文, 中華民國89年。
[24] 吳晉昌, “新型虛功補償及諧波抑制之主動電力濾波器,” 國立成功大學碩士論文, 中華民國81年。
[25] V. M. Cardenas, S. Horta, and R. Echavarria, “Elimination of dead time effects in three phase inverters,” IEEE Power Electronics Congress, pp. 258-262, 1996.
[26] 何濂洵, “以數位信號處理器為基礎之全數位式UPS之研製,” 國立交通大學碩士論文, 中華民國82年。
[27] 糜自強, “數位化光伏能量轉換系統,” 國立成功大學碩士論文, 中華民國88年。
[28] 黃國建, “追蹤式光伏能量轉換系統之研究” , 國立成功大學碩士論文, 中華民國85年。
[29] S. M. Abu-Sharkh, Z. F. Hussien, and J. K. Sykulski, “Current control of three-phase PWM inverter for embedded generators,” IEE Power Electronics and Variable Speed Drives, pp. 524-529, 2000.
[30] 陳正哲, “高輸入功因三相不斷電電源供應系統之研究,” 國立成功大學碩士論文, 中華民國81年。
[31] 吳金勇、李隆財, “TMS320C240 原理與實習,” 長高圖書, 中華民國89年。
[32] “TMS320F/C240 DSP controllers reference guide,” Texas Instrument, 1999.
[33] S. Franco, “Design with operational amplifiers and analog integrated circuits,” McGRAW-HILL Co., 1997.