Yue WANG, Gang FU, Jingyu HU, et al. Parameter Design and Stability Analysis of Double-Loop Control for High-speed EMU 4QS-Converter[J]. Electric Drive for Locomotives, 2020,(2):26-30,66.
Yue WANG, Gang FU, Jingyu HU, et al. Parameter Design and Stability Analysis of Double-Loop Control for High-speed EMU 4QS-Converter[J]. Electric Drive for Locomotives, 2020,(2):26-30,66. DOI: 10.13890/j.issn.1000-128x.2020.02.006.
Double-grid-frequency fluctuation exists in DC-link voltage of EMU 4QS-converter whose grid-side current contains much ripple of equivalent switching frequency. RC circuit filters and digital filters were usually employed for signal conditioning of voltage and current. However, improper filter parameter will lead to unstable control. In order to improve control stability of 400 km/h high-speed EMU, firstly, the parameter design principle of DC-link voltage and current double-loop control for a 4QS-converter was introduced. Secondly, the effects of voltage and current signal conditioning filters on the stability of the double-loop control were analyzed, and the necessary conditions of system stable were revealed. Finally, simulation results based on 400 km/h high-speed EMU verifiedied the correctness and effectiveness of the theoretical analysis.
关键词
高速动车组四象限变流器双闭环控制参数设计滤波时间常数积分时间常数稳定性分析仿真
Keywords
high-speed EMU4QS-converterdouble-loop controlparameter designfilter time constantintegral time constantstability analysissimulation
GOLESTAN S, RAMEZANI M, GUERRERO J M, et al. Moving averagefilter based phase-locked loops: performance analysis and design guidelines[J]. IEEE Transactions on Power Electronics, 2014, 29(6): 2750-2763.