- 學位論文
具快速響應之電池測試系統
A Novel Battery Test System with Fast Dynamic Response
摘要
本文的目的為設計與實現具高動態響應之電池測試系統，此系統除提供較高功率電池進行充、放電測試外，亦可對電池模擬電動車或複合動力車於道路行駛時電池電荷流動之狀態，如此可降低電池於實車測試之成本與時間。另外，亦可經由本系統將電池於放電測試之電能送回電網，進一步降低能源之消耗。該系統是由兩個雙向功率轉換器串接而成，第一級為具有功率因數調控之三相AC-DC轉換器與第二級具有電氣隔離型DC-DC轉換器。其中，DC-DC轉換器包含兩個全橋電路、置於兩全橋電路間作為電氣隔離之高頻變壓器與一只置於電池輸出端之LC低通濾波電路。當電池於充電模式下，電網之交流電經由AC-DC轉換器、具ZVS相移控制之全橋電路、高頻變壓器、同步整流之全橋電路與LC低通濾波電路將電荷輸入電池。而於放電時，經由電流饋入之全橋電路、高頻變壓器與DC-AC轉換器將電荷送入電網。 為提高電池電流調控之響應，進行轉換器小訊號分析及控制器設計並加入適當之控制策略，最後建立一套具水冷 的測試平台，經由實測驗證所提控制策略之有效性。
並列摘要
The objective of this paper focuses on design and implementation of a secondary battery test system with high dynamic response. This system provides not only the high power battery for charging and discharging test, but also the bi-directional current control for a secondary battery to simulate the power flow of driving state for developing control strategy of EV and HEV. Thus, the cost and time of driving test with battery can be reduced. In addition, the discharging energy of the battery can be sent back to grid to fulfill energy saving. The proposed system is composed of two bi-directional power flow converters in serial connection, which are a three-phase AC-DC converter with power factor correction and a galvanic isolation DC-DC converter. The DC-DC convert is constructed by two sets of full-bridge circuit, a high frequency transformer module inserted between these two bridges to make isolation and a LC filter at the output terminal of battery. In the charge mode, the battery will be charged by the utility through a phase-shifted full-bridge circuit with ZVS control strategy, a high frequency transformer module, a full-bridge circuit with synchronous rectification and a LC filter. In the discharge mode, a current-fed full-bridge control is used to recover the discharging energy to utility through transformer module and the DC-AC inverter. In order to facilitate the response of the current control, the small signal analysis will be derived to design a proper control strategy. Finally, a DSP-based converter with water cooling is established to provide 6kW/250V for the battery test system. Besides, some measured results are provided to show its successful operation and effectiveness.