具多輔助充電源之多功能蓄電池儲能系統

本論文旨在開發一具多輔助充電源之多功能蓄電池儲能系統，並從事其操控。所建蓄電池儲能系統之400V直流鏈係由96V蓄電池經含兩單元之一雙向交錯式直流/直流轉換器升壓調控建立之，此交錯式轉換器之電流控制只需要一個電流感測器。經由適當的控制，所建構三相雙向變頻器可產生60Hz/220V之交流電壓輸出，並具有高彈性之功率調控能力。所建蓄電池儲能系統具下列功能：(1) 獨立操控模式：所有區域負載均由蓄電池儲能系統供電，具有良好之波形品質。(2) 連網操控模式：蓄電池儲能系統藉由同步程序連接至傳統電網，可執行以下三種操作模式：(i) 浮接模式：傳統電網只提供實功率給區域負載，所有負載之虛功率及諧波功率由蓄電池儲能系統補償；(ii) 放電模式 (或電池至電網模式)：蓄電池儲能系統供電區域負載，並可回送規劃之功率至傳統電網；(iii) 充電模式 (或電網至電池模式)：傳統電網供電區域負載，並對蓄電池充電。在連網操作模式下，所有區域負載之虛功率及諧波功率均可由蓄電池儲能系統提供。透過共通之共振式隔離直流/直流轉換器，蓄電池儲能系統之蓄電池組可由所提含多電源之輔助充電系統進行充電。其中，三相交流源經由三相切換式整流器連接至蓄電池儲能系統，所採之切換式整流器可為三相單開關切換式整流器或維也納切換式整流器。而可能之輸入交流電源包括備用交流配電迴路、風力發電機、微型渦流機及飛輪發電機等。直流輔助充電源如太陽能或燃料電池，係由所開發之交錯式升-降壓型直流/直流轉換器介接至蓄電池儲能系統。此外，微電網及電動車輛亦可接至本蓄電池儲能系統，執行互連操作。關鍵詞：蓄電池儲能系統、微電網、變頻器、切換式整流器、共振式轉換器、交錯式、連網操控、獨立操控。

關鍵字

蓄電池儲能系統；微電網；變頻器；切換式整流器；共振式轉換器；交錯式；連網操控；獨立操控

並列摘要

This thesis presents a multifunctional battery energy storage system (BESS) with multiple auxiliary charging sources and its operation control. The DC-link voltage (400V) in the developed BESS is established from the 96V battery bank via an interleaving bi-directional DC/DC converter with two cells. Only single DC-link current sensing is required for making the current-mode controls of the parallel converters. Then a bilateral three-phase inverter is developed to generate 60Hz/220V AC output voltages. Through proper controls, the developed inverter possesses flexible power conditioning control capability. The developed BESS is arranged to possess the following functions: (1) Autonomous mode: the local loads are powered by the BESS with good waveform quality. (2) Grid-connected mode: The BESS is connected to the utility grid via synchronization process for conducting the following three operation modes: (i) Floating mode: The utility grid only supplies real power to the local load, and all load reactive as well as harmonic powers are compensated by the BESS; (ii) Discharging mode (or battery-to-grid (B2G) mode): The BESS supplies power to the local load and sends the preset power back to the utility grid; and (iii) Charging mode (or grid-to-battery (G2B) mode): The utility grid supplies power to the local load and also charges the battery. The BESS can compensate all load reactive and harmonic powers in grid connected operation. The battery bank of the developed BESS can be charged by an auxiliary charger system with multiple auxiliary charging sources through a common resonant isolated DC/DC converter. The three-phase AC sources are connected to the BESS via three-phase switch-mode rectifiers, such as three-phase single-switch (3P1SW) SMR and Vienna three-phase three-switch SMR. And the possible sources may include backup AC distribution network, wind generator, micro-turbine generator and flywheel generator, etc. As to the DC auxiliary charging sources, such as photovoltaic (PV) cell and solid-state fuel cell (SoFC), they are interfaced to the BESS by the developed interleaving buck-boost DC/DC converter. Moreover, the micro-grid and electric vehicle can be incorporated into the developed BESS to conduct their inter-connected operations.

並列關鍵字

BESS ； power conditioning control ； micro-grid ； inverter ； switch-mode rectifier ； resonant converter ； interleaving ； grid-connected operation ； autonomous operation

參考文獻

[30]N. Mohan, T. M. Undeland and W. P. Robbins, Power Electronics: Converters, Applications and Design, New York: John Wiley & Sons, 2003.

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[4]N. Hatziargyriou, H. Asano, R. Iravani and C. Marnay, “Microgids,” IEEE Power Energy Mag., vol. 5, no. 4, pp. 78-94, 2007.

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國際替代計量

具多輔助充電源之多功能蓄電池儲能系統

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