基于BPNN-PID算法的改进型DC/DC变换器控制系统研究
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摘要
为提高DC/DC变换器信号处理速度与控制精度,对隔离型H桥DC/DC变换器的主电路进行了改进,在其超前臂加箝位二极管,滞后臂加辅助网络,使变换器获得了良好的零电压开关效果;提出了基于BPNN-PID混合算法的隔离型H桥ZVS DC/DC变换器系统控制策略,对主电路与控制系统参数进行了设计,并对控制系统进行了建模与仿真,得到了稳态时的工作波形和负载突变时的动态响应波形。利用DSP TMS320LF2407快速数据处理平台对该控制系统进行了Matlab仿真和实验分析。结果表明该控制系统响应时间短、超调量小、控制性能优良,系统的稳定性得到了提高。
In order to improve the signal processing speed and control accuracy of DC/DC converter,the main circuit of isolated H-bridge ZVS DC/DC converter is improved. In its super forearm plus clamp diode,lag arm plus auxiliary network,make converter a good zero-voltage switching effect is obtained,a control strategy of isolated H-bridge ZVS DC/DC converter system based on BPNN-PID hybrid algorithm is proposed,the parameters of main circuit and control system are designed,and the control system is modeled and simulated. The working waveform in steady state and the dynamic response waveform in sudden change of load are obtained,and the control system is simulated with Matlab and tested by DSP TMS320 LF2407 fast data processing platform. The simulation and experiment results show that the system has shorter response time,smaller overshoot and more excellent control performance,and the stability of the control system has been improved.
In order to improve the signal processing speed and control accuracy of DC/DC converter,the main circuit of isolated H-bridge ZVS DC/DC converter is improved. In its super forearm plus clamp diode,lag arm plus auxiliary network,make converter a good zero-voltage switching effect is obtained,a control strategy of isolated H-bridge ZVS DC/DC converter system based on BPNN-PID hybrid algorithm is proposed,the parameters of main circuit and control system are designed,and the control system is modeled and simulated. The working waveform in steady state and the dynamic response waveform in sudden change of load are obtained,and the control system is simulated with Matlab and tested by DSP TMS320 LF2407 fast data processing platform. The simulation and experiment results show that the system has shorter response time,smaller overshoot and more excellent control performance,and the stability of the control system has been improved.
引文
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[13]沙德尚,李斌,袁文琦,等.基于负载自适应的辅助LC网络宽范围零电压开通的输入串联输出并联移相全桥DC-DC变换器[J].中国电机工程学报,2016,36(13):3558-3564,3374.
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[15]李瑞生,徐军,翟登辉,等.三电平DC/DC电源转换技术研究[J].电力系统保护与控制,2017,45(11):73-80.
[2]华伟民,白鹏,蒋金,等.电力系统DC/DC转换器优化控制仿真研究[J].计算机仿真,2016,33(2):418-422.
[3]杨帆,刘郁权.带恒功率负荷的双向DC/DC变流器改进控制策略[J].电气传动,2018,48(6):23-28.
[4]崔超,李红梅,张恒果,等.改进移相全桥DC/DC变换器的建模研究[J].电子技术应用,2018,44(4):146-148.
[5]侯聂,宋文胜,武明义.全桥隔离DC/DC变换器的直接功率控制方法[J].电力系统自动化,2016,40(17):204-208.
[6]王晔.燃料电池DC/DC变换器的设计[J].电源技术,2016,40(8):1613-1614.
[7]马春英,李学武.一种高效率混合型全桥DC/DC转换器的设计[J].电力系统保护与控制,2018,46(14):143-151.
[8]宋朝锋,张红娟,靳宝全,等.一种交错并联零电流软开关双向DC/DC变换器设计术[J].电测与仪表,2018,55(4):118-123.
[9]张永领,解光军,张章,等.一种提高DC/DC开关变换器瞬态响应的补偿算法[J].合肥工业大学学报:自然科学版,2018,41(3):362-367.
[10]任旭亮,易灵芝,陈宇,等.移相全桥DC/DC变换器分数阶PλIDμ控制的研究[J].制造业自动化,2017,39(10):15-19.
[11]马文辉,何志琴,黄玉芳.移相全桥ZVS变换器的研究[J].贵州大学学报:自然科学版,2017,34(2):59-63.
[12]杨晓峰,郑琼林,林智钦,等.用于直流电网的大容量DC/DC变换器研究综述[J].电网技术,2016,40(3):670-677.
[13]沙德尚,李斌,袁文琦,等.基于负载自适应的辅助LC网络宽范围零电压开通的输入串联输出并联移相全桥DC-DC变换器[J].中国电机工程学报,2016,36(13):3558-3564,3374.
[14]张守武,张文涛,曲鸣飞.零电流开关大功率DC/DC双全桥变换器设计[J].电子器件,2017,40(4):879-886.
[15]李瑞生,徐军,翟登辉,等.三电平DC/DC电源转换技术研究[J].电力系统保护与控制,2017,45(11):73-80.