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| Dynamic Characteristic Control Analysis and Improvement of Metro Battery Charger Converter Based on Voltage Feed-Forward |
| Du Huiqing, Chen Jie, Sun Tao, Diao Lijun, Liu Zhigang |
| School of Electric Engineering, Beijing Jiaotong University Beijing 100044 China |
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Abstract The Voltage oscillation on the DC-link and the load disturbance of metro battery charger converter results in unsettled output voltage, affecting system stability finally. The paper researches on how to improve the dynamic performance of the battery charger in metro. Based on the phased small-signal model of the system set up through the aid of state space average method, thus deduced by approximate linearization method system open-loop transfer function, the paper analyses the stability and dynamic characteristic of the system under complex frequency domain. Subsequently, the PID regulator and the voltage feed-forward PWM control strategy are proposed, and further analysis of its mechanism and realization mode is proposed. Finally, the paper verifies correctness of the control strategy through MATLAB simulation and experiment.
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Received: 20 September 2012
Published: 12 December 2013
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[1] 吴佐民. 城市轨道交通高频充电机研制[D]. 北京交通大学, 2011.
[2] 林维明, 黄是鹏. 具有快速负载动态响应的DC/DC开关变换器开环控制新策略[J]. 中国电机工程学报, 2001, 21(9): 78-81.
Lin Weiming, Huang Shipeng. A new open-loop strategy for a DC/DC switching converter with fast load transient response[J]. Proceedings of the CSEE, 2001, 21(9): 78-81.
[3] Zheren lai, Smedly K M. A new extension of one-cycle control and its application to switching power amplifiers[J]. IEEE Transactions on Power Electronics, 1996, 11(1): 99-105.
[4] 许峰, 徐殿国, 杨玉秀. 具有最优动态响应的PWM型DC-DC变换器非线性控制新策略[J]. 中国电机工程学报, 2003, 23(12): 133-139.
Xu Feng, Xu Dianguo, Liu Yuxiu. A novel nonliner control method for pwm DC-DC converter with optimizing transient response[J]. Proceedings of the CSEE, 2003, 23(12): 133-139.
[5] 华晓辉, 林维明, 熊代富. DC/DC变换器快速动态响应分析[J]. 电力电子技术, 2007, 41(1): 83-84, 102.
Hua Xiaohui, Lin Weiming, Xiong Daifu. Analysis of fast transient response in DC/DC convertors[J]. Power Electronics, 2007, 41(1): 83-84, 102.
[6] 潘洪亮. DC/DC变换器的闭环控制系统分析和仿真[J]. 城市轨道交通研究, 2011, 14(9): 38-42, 57.
Pan Hongliang. Analysis and simulation of DC/DC converter’s closed-loop control system[J]. Urban Mass Transit, 2011, 14(9): 38-42, 57.
[7] Fang Lin Luo, Hong Ye. Small signal analysis of energy factor and mathematical modeling for power DC-DC converters[J]. IEEE Transanctions on Power Electronics, 2007, 22(1): 69-79.
[8] 王小方. 基于状态空间平均法的DC/DC高频隔离变换器建模仿真分析[J]. 机车电传动, 2011, 1: 10-13.
Wang Xiaofang. Modeling and simulation analysis of DC/DC high frequency isolated converter based on average state space method[J]. Electric Drive For Locomotive, 2011, 1: 10-13.
[9] 章涛, 阮新波. 输入串联输出并联全桥变换器均压均流的一种方法[J]. 中国电机工程学报, 2005, 25(24): 47-50.
Zhang Tao, Ruan Xinbo. A method to voltage sharing and current sharing for input-series output-parallel full-bridge converter[J]. Proceedings of the CSEE, 2005, 25(24): 47-50.
[10] 嵇保健, 陈新. DC/DC变换器数字PID控制方法研究[J]. 电源世界, 2009, 4: 21-25.
Ji Baojian, Chen Xin. Study on the method of digital pid control for DC/DC converter[J]. The World of Power Supply, 2009, 4: 21-25.
[11] 王旭峰, 陈维荣, 鹏飞. Buck型变换器数字PID控制器设计方法研究[J]. 通信电源技术, 2010, 27(4): 1-3.
Wang Xufeng, Chen Weirong, Peng Fei, et al. Study on the design method of digital PID controller for Buck-mode converter[J]. Telecom Power Technology, 2010, 27(4): 1-3.
[12] Carrejo C E, Ramos Paja C A. High frequency digital controller applied to voltage regulator modules[J]. Journal of Enerhy and Power Engineering, 2011, 5(11): 1068-1077. |
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2013, Vol. 28 
