電池充放電之動態方程分析與控制器設計

Dynamics Analysis and Controller Design for Battery Charging and Discharging

陳正平(Cheng-Ping Chen)

指導教授 ： 練光祐

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2012年)

摘要

本論文利用半橋轉換器（Half bridge converter）架構並且配合PWM信號，分別控制直流/直流轉換器之High side與Low side MOSFET開闢，使之具有可以對鉛酸電池充電也可以從鉛酸電池輸出穩定電壓功能的直流電源轉換器，達到雙向能量傳送之特性。為使充電與放電模式均可受控，首先結合鉛酸電池等效模型與雙向直流/直流轉換器，接著利用狀態空間變數之動態方程分析與誤差方程式推導以得到控制器參數，然後於充電狀態與放電狀態皆共用相同的回授控制電路條件下設計電池充放電控制器，利用模擬軟體驗證可行性，然後實作電路並且將控制器參數套用在此電路，以達到電池充放電之目的。此架構具有簡化控制電路架構與降低電路成本之優點。

關鍵字

雙向能量傳送 ； 電池充/放電 ； 直流轉換 ； 狀態變數

並列摘要

This paper uses half bridge converter structure and PWM signal to control DC / DC converter high side and low side MOSFET switches. The proposed technique can achieve bi-direction energy transmission where the battery is charged when an outer source is attached, whereas the battery can also provide stable voltage when a load is attached. In order to ensure both charge and discharge modes can work well, we start from the state equations, derive the error equations, and find controller parameters. Then we can implement battery charge and discharge controller using the same state feedback gains. We use simulation software to verify feasibility and apply the obtained controller parameters on actual circuit to achieve both charge and discharge purpose. This structure is with advantages of simplifying circuit structure and cost reducing.

並列關鍵字

Bidirectional energy transmission ； Battery Charging/ Discharging ； DC-DC Converter ； State Variables

參考文獻

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[8] Datasheet of IR2110 high and low side driver, International Rectifier Inc., 2005.