燃料電池用之具有複合能量調控直流-直流轉換器研製

Design and Implementation of a DC-DC Converter with Hybrid Energy Control for Fuel Cell System

李奐侖(Huan-Lun Li)

指導教授 ： 黃明熙

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00046

摘要

本論文主要在研製做為燃料電池輸出之電壓轉換器，以雙模組並聯之隔離相移全橋直流-直流轉換器作為燃料電池輸出之轉換器提供穩定之直流輸出電壓，為進一步提供負載所需之瞬間功率，因此使用具隔離之雙向直流轉換器連結至電池作為能量之緩衝裝置。本文所提之燃料電池系統架構，是以兩只數位訊號處理器(Microchip dsPIC30F2023)作為控制核心，分別進行上述電源轉換器之調控，於雙模組並聯加入交錯式切換技術以降低燃料電池輸出電流漣波。而以電池作為緩衝之雙向直流轉換器，其升壓與降壓分別是以電流前饋推挽式及半橋之架構來實現，並加入一輔助繞組平衡半橋架構兩電容電壓。而研究重點為:高切換頻率之數位功率控制可行性分析;探究交錯式全橋相移之並聯架構於燃料電池應用之可行性;並聯模組之輸出均流與暫態響應特性之改善。

關鍵字

全橋相移轉換器 ； 交錯式控制 ； 雙向直流-直流轉換器

並列摘要

This thesis is aimed to implement a voltage converter for the output of fuel cell battery, adopting full bridge phase shift DC-DC converter to provide stable DC voltage as output of fuel cell ; furthermore, to provide immediate power for the load, this thesis adds a bidirectional DC-DC converter connected to the battery as a buffer device of energy. The structure of fuel cell system adopts two digital signal processors (Microchip dsPIC30F2023) as the control core, regulating power of the above converter and incorporating interleave technology into the dual module to reduce the output current ripple of the fuel cell. As for the bidirectional DC-DC converter , its boosting and bucking are implemented through Current-fed push pull DC-DC converter and half bridge topology. And adds a auxiliary winding to balance two capacitors of half bridge. This thesis focus on Feasibility analysis for digital power control with high switching frequency;studying the feasibility of applying interleave full bridge phase shift’s shunting structure to fuel cell battery;
improvement of transient response and output current sharing of the two modules.

並列關鍵字

full bridge phase shift converter ； interleave control ； bidirectional DC-DC converter

參考文獻

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[21] 林建億，「以數位訊號處理器實現具有相移與零電壓切換之全橋轉換器」，國立台北科技大學電機工程系碩士學位論文，民國九十六年一月。

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