风电系统中机侧整流器故障仿真与特性分析  

Fault Simulation and Characteristic Analysis of Machine-Side Rectifier in Wind Power System

作　　者：徐壮 杨晓冬[1] 刘谢玉 张俊皓 

机构地区：[1]盐城工学院电气工程学院,江苏 盐城

出　　处：《建模与仿真》2023年第3期2551-2564,共14页Modeling and Simulation

摘　　要：本文以风力发电控制系统中变流器开关管为研究对象,对其开路故障进行特性分析。首先对风电系统中机侧整流器进行数学建模分析,并介绍了主要控制策略;然后以此为基础建立了直驱式永磁风力发电系统机侧变流器MATLAB仿真模型;分析了整流器功率开关管开路故障的作用原理;最后分别模拟了单管和双管在不同桥臂上的开路故障,并分析了各类型开路故障对系统关键参数的影响。分析结果表明风力发电系统中变流器开路故障对系统影响较大,必须采取一定的措施进行防止。This article takes the switching device of the inverter in the wind power control system as the re-search object and conducts characteristic analysis on its open-circuit fault. Firstly, the mathematical modeling and analysis of the machine-side rectifier in the wind power system are carried out, and the main control strategies are introduced. Then, based on this, a direct-drive permanent magnet wind power generation system machine -side inverter MATLAB simulation model is established. The principle of the open-circuit fault of the power switch of the rectifier is analyzed. Finally, the open-circuit faults of single and double switches on different bridge arms are simulated respective-ly, and the influence of each type of open-circuit fault on the key parameters of the system is ana-lyzed. The analysis results show that the open-circuit fault of the inverter in the wind power gener-ation system has a significant impact on the system and certain measures must be taken to prevent it.

关 键 词：整流器 风电系统 开路故障 风力发电控制系统 机侧变流器 桥臂 控制策略 

分 类 号：TM4[电气工程—电器]