摘要
在此讨论了几种并联方案进行了讨论,并提出采用交流侧串接电感再进行并联的方案。鉴于在设计LCL滤波器时,其参数的选取直接影响到系统的开关纹波滤除效果和系统能否稳定工作,很难做到优化设计,在此引入一种简单实用的计算滤波器参数的方法。使得PWM整流器的纹波和LCL的成本在一个合理的范围。另外首次提出了采用α-β滤波器进行电网角度获取的新方法,具有很好的鲁棒性,有效提高了系统稳定性和可靠性。在整体控制方案上,采用了双闭环解耦控制,分析了电压外环和电流内环的设计。最后对600 kW整流器主电路的进行了仿真验证。
This paper discusses several parallel approaches,and finally proposes a solution which adopts AC-side inductance connected in series.As the designing of LCL is difficult to be optimized,a simple and practical approach to calculate filter parameter is introduced,which keeps PWM converter switching frequency ripple and LCL at a reasonable cost.Furthermore,this paper proposes a new approach to get the grid angle by using the α-β filter,the approach is of great robustness,efficiently improving the stability and reliability of the system.The control scheme is based on the double loop decoupling control strategy.The voltage loop and the inner current loop are analyzed.At last the above-mentioned technical solution is verified by the simulation.
出处
《电力电子技术》
CSCD
北大核心
2010年第6期29-31,共3页
Power Electronics
基金
上海市科学技术委员会资助(09QB1403200
10R21421800)~~
关键词
整流器
脉宽调制
滤波器
电感电流
rectifier
pulse width modulation
filter
inductor current
