摘要
为了提高电气化铁道电流平衡补偿装置的补偿性能,研究了常用输出滤波器的性能及改进优化方法。分析了常用LC输出滤波器的幅频和相频特性,并对比了LC(常K型滤波器)、RLC、M型和LCL输出滤波器的幅频特性,提出了在常用LC输出滤波器的滤波电容上串联电阻和电感的并联支路,它既能抑制电流平衡补偿装置与电网发生谐振,又能减小电阻上的有功损耗。从功率传输能力、瞬态电流跟踪能力、电压总谐波畸变率、谐波电流和有功损耗几方面分析了输出滤波器对电流平衡补偿装置的影响;利用满意度为综合指标的模糊优化目标函数(包括价格因数、双向功率传输能力、总谐波畸变率、谐波电流、有功功率损耗),对输出滤波器的参数进行了优化设计。仿真结果表明,经过模糊优化的参数和经验设计的参数相比,所提出的改进的输出滤波器可以更好地满足系统的补偿要求。
In order to improve the performance in current balance compensation inverter for electrified railway compensation,the common output filter performance and improved optimization method were studied.The amplitude frequency response and phase frequency response of LC output filter was analyzed,and the amplitude frequency responses of LC,RLC,M and LCL output filter were compared.It is put forward that the phenomena of the output filter can suppress the resonance and lower the resistance active losses effectively when connecting a parallel circuit of small resistance and inductance to the capacity.Furthermore,the influence of output filter on the current balance compensation inverter is discussed from the bi-directional power flow ability,transient current tracking,voltage total harmonic distortion,and harmonic current and resistance active losses.A fuzzy objective function,which is the weighted sum of the cost,power flow,the voltage total harmonic distortion,the harmonic current and resistance active losses,called as satisfaction level for practical engineering applications,is proposed.The simulation results show that the output filter designed by optimization method can meet the performance requirements of the current balance compensation,and is superior to that designed just by experience.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第2期460-467,共8页
High Voltage Engineering
基金
甘肃省自然科学基金(096RJZA092)
甘肃省教育厅科研基金(0804-01)
甘肃省高等学校基本科研业务费专项资金~~
关键词
电气化铁道
电流平衡补偿
输出滤波器改进
功率传输能力
瞬态电流跟踪能力
模糊优化
参数优化
electrified railway
current balance compensation inverter
improved output filter
power flow ability
transient current tracking ability
fuzzy optimization
parameter optimization
