具交錯式介面轉換器及多重儲能系統以風力開關式磁阻發電機為主之直流微電網

本論文旨在開發以風力開關式磁阻發電機為主之直流微電網，此微電網配具有三相負載變頻器及由蓄電池和飛輪所組成之混合式儲能系統。所建之風力開關式磁阻發電機，經由含兩單元之交錯式電流注入推挽直流-直流轉換器介接至微電網之共同直流匯流排，經由適當地電力電路設計、強健電壓及電流控制、電壓命令設定及換相移位，在變動之驅動轉速及負載下，所建發電機具調控良好之直流匯流排電壓。又由於交錯式操作特徵，可具有較小之直流輸出紋波及較高之可靠性。為從事微電網之性能實測評估，本論文設計製作一個三相負載變頻器，採d-q框下電流控制及零序控制信號注入機構，在未知及非線性負載下可得良好之交流輸出電壓波形及動態調節特性。另外，本論文建構一含飛輪及鉛酸蓄電池之混合式儲能系統，以提供直流微電網之儲能緩衝支撐。各儲能裝置經一雙向降/昇壓直流/直流介面轉換器介接至微電網之共通直流鏈。為了增強開關式磁阻馬達飛輪之放電特性，亦採行電壓命令自動修正、適當換相移位及控制器調適等策略。至於蓄電池儲能系統，透過適當之電力電路及控制器設計，可於放電模式下獲得良好之共通直流鏈電壓調控特性，並有良好之充電效能。所建微電網之各組成電力電路均以數位訊號處理器全數位化實現，並由實測結果驗證所建微電網之正常操作及控制性能。

關鍵字

風力發電機；開關式磁阻電機；微電網；儲能系統；飛輪；蓄電池；介面轉換器；交錯式；負載變頻器；強健控制；換相移位

並列摘要

his thesis develops a wind switched-reluctance generator (SRG) based DC micro-grid, it is equipped with a three-phase load inverter and a hybrid energy storage system consisting of a lead-acid battery and a flywheel. The established SRG is interfaced to micro-grid common DC bus via an interleaving current-fed push-pull (CFPP) DC/DC converter formed using two cells. Well regulated DC bus voltage is obtained under varying shaft driving speeds and load levels through properly treating the key issues, such as power circuit design, robust voltage and current controls, voltage command setting and commutation shift, etc. Meanwhile, lower ripples and higher reliability are possessed thanks to the interleaving operation. To make experimental evaluation for micro-grid, a three-phase load inverter is designed and implemented. The current control scheme in d-q domain with zero sequence control signal injection is adopted. Good AC output voltage waveforms and dynamic regulation characteristics under unknown and nonlinear loads are obtained. A hybrid energy storage system consisting of a flywheel and a lead-acid battery bank is established to provide energy storage support for the proposed DC micro-grid. Each storage device is interfaced to the micro-grid DC bus via a bilateral buck/boost DC/DC converter. For enhancing the SRM flywheel discharging performance, automatically adapting the voltage command, proper commutation instant setting and controller tuning are also made under generating mode. As to the battery energy storage system, good common-bus DC voltage regulation in discharging mode and good charging performance are obtained by the proper designs of its circuit and controller. Digital signal processor (DSP) is used to realize the digital controls of all constituted power stages in the developed micro-grid. The operation characteristics and control performances of the whole micro-grid are evaluated experimentally.

並列關鍵字

wind generator ； switched-reluctance machine ； micro-grid ； energy storage system ； flywheel ； battery ； interleaving ； load inverter ； robust control ； commutation shift

參考文獻

[2] T. Yamaguchi, N. Yamamura and M. Ishda, “Study for small size wind power generating system using switched reluctance generator,” in Proc. IEEE ICIT, 2004, pp. 1510-1515.

[4] S. Morozumi, “Micro-grid demonstration projects in Japan,” in Proc. IEEE PCCON, 2007, pp. 635-642.

[5] D. Boroyevich, I. Cvetkovic, D. Dong, R. Burgos, F. Wang and F. C. Lee, “Future electronic power distribution systems a contemplative view,” in Proc. IEEE OPTIM, 2010, pp.1369-1380.

[6] H. Kakigano, M. Nomura and T. Ise, “Loss evaluation of DC distribution for residential houses compared with AC system,” in Proc. IEEE IPEC, 2010, pp. 480-486.

[7] H. Kakigano, Y. Miura and T. Ise, “Low-voltage bipolar-type DC microgrid for super high quality distribution,” IEEE Trans. Power Electron., vol. 25, no. 12, pp. 3066-3075, 2010.

國際替代計量

具交錯式介面轉換器及多重儲能系統以風力開關式磁阻發電機為主之直流微電網

全文下載

主題瀏覽