摘要
超级电容快速储能技术在短时大功率应用中有较好的技术经济性,非常适用于新型有轨电车储能。针对有轨电车充电装置整流器采用传统多脉波整流技术导致的整流器输入侧交流电压畸变、交流电流谐波含量高,直流母线电压纹波大,功率因数不可控等问题,提出采用脉宽调制(PWM)整流方式。该整流方式具有功率因数高,谐波含量低等优点,采用电压-电流双闭环与电压前馈相结合的控制策略,来抑制直流母线电压在超级电容接入瞬间引起的波动。通过设计LCL滤波来吸收整流器交流侧的电流谐波,并推导了LCL滤波器的计算公式。系统仿真和实验证实了该控制的有效性。
Super-capacitor has imponderable advantages on the application of short and high power, and is very suitable for new tram.Multi-pulse rectifier which is used in trams charging device,caused many issues, such as large harmonic contents,great ripple of DC bus voltage,uncontrollable power factor,and so on.And then the PWM rectifier, with the high power factor and low harmonic content,is presented.Due to the fact that current and voltage dual-loop control cannot restrain DC bus voltage fluctuation and improve the transient respond effectively when the super-capacitor instant coming,a voltage feed-forward compensator is added.LCL filter is designed to absorb current harmonics,and the mathematical model is given.Experimental and simulation studies are presented to show the effectiveness of the proposed control.
出处
《电力电子技术》
CSCD
北大核心
2016年第4期60-62,共3页
Power Electronics
