應用於儲能系統之隔離式雙向直流/直流轉換器設計;Design of Isolated Bidirectional DC/DC Converter for Energy Storage System

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Title:	應用於儲能系統之隔離式雙向直流/直流轉換器設計;Design of Isolated Bidirectional DC/DC Converter for Energy Storage System
Authors:	黃得祐;Huang, Te-Yu
Contributors:	電機工程學系
Keywords:	隔離式雙向直流/直流轉換器;相移全橋/推挽式;柔性切換;Isolated Bidirectional DC/DC converter;Phase Shifted Full-Bridge/Push-Pull;Soft-switching
Date:	2019-08-21
Issue Date:	2019-09-03 16:02:31 (UTC+8)
Publisher:	國立中央大學
Abstract:	由於再生能源不穩定之情況，因此本文設計可調節功率之隔離式雙向直流/直流轉換器，其主要功能為調度微電網系統內部直流匯流排與儲能系統間之能量流動。藉由此轉換器之設計，實現電能可以雙向流通來及時補足微電網系統所需功率，並提高能源的轉換效率。本文的系統架構主要為相移全橋/推挽式雙向轉換電路，透過脈波相位調變達成相移技術產生零電壓切換，其數位控制採用Renesas公司所生產之型號 RX62T微控制器，可執行類比數位之轉換、開關訊號控制及電路保護機制等功能。當微電網系統功率充餘時，其轉換器將操作於降壓模式，使儲能系統進行充電；反之，其轉換器將操作於昇壓模式，使儲能系統進行放電，補足微電網系統所欠缺功率。最後，本文使用電路模擬軟體驗證系統架構且實際製作一部具柔性切換之隔離式雙向直流/直流轉換器，並藉由實測結果來證實此架構之可行性。 ;Due to the instability of renewable energy, this thesis designs an isolated bidirectional DC/DC converter with adjustable power. It proposes on control the energy flow between DC bus and energy storage system. With this design of converter, the electrical energy can be bidirectionally flow to supplement the power required by the electrical system and improve the energy efficiency. The electric circuit of this paper is phase-shifted full-bridge/push-pull bidirectional circuit. Pulse phase modulation is used to achieve zero-voltage switching. The digital control uses the RX62T microcontroller which is produced by Renesas, it can perform analog-to-digital convertor, switching signal control and circuit protection mechanisms. When the system power is replenished, the converter will operate in the buck mode to charge the battery of energy storage system; otherwise, the converter will operate in the boost mode to discharge the battery of energy storage system to supply the system. Finally, this paper uses the circuit simulation software to verify system architecture and produces an isolated bidirectional DC/DC converter with soft switching. It confirms the feasibility of this architecture by the results.
Appears in Collections:	[Graduate Institute of Electrical Engineering] Electronic Thesis & Dissertation

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