直驱永磁同步风电机组的动态建模与运行控制  

Dynamic Modeling and Control of Directly-driven Permanent Magnet Synchronous Generator Wind Turbine

作　　者：严干贵[1] 魏治成[1] 穆钢[1] 崔杨[1] 陈文福[1] 党国营[1] 

机构地区：[1]东北电力大学电气工程学院,吉林132012

出　　处：《电力系统及其自动化学报》2009年第6期34-39,共6页Proceedings of the CSU-EPSA

基　　金：吉林省教育厅计划项目(5820320);东北电力大学研究生创新基金项目

摘　　要：为分析直驱式永磁同步风力发电机组的联网运行特性,建立了直驱式永磁同步风力发电机组联网运行的数学模型;构建以永磁同步发电机输出功率为反馈量、转速为控制对象的最大风能捕获发电控制模型,建立了单位功率因数、id=0为目标的两种无功功率控制模型;在PSCAD/EMTDC仿真平台上建立相应的仿真模型,对直驱式永磁同步风电机组联网运行进行仿真分析,对所建立的数学模型和控制方法的有效性进行了验证,对比分析了发电机侧变流器采用两种无功功率控制策略时的运行性能。In order to analyze the performances of directly-driven permanent magnet synchronous generator wind turbine （PMSG-WT） connecting to the grid, a dynamic model of PMSC-WT is established. The generator side converter is used to control the active power transferred from the generator by feeding the output active power back to achieve maximum power point tracking and to control the reactive power exchange with the generator in the modes of unit power factor and id =0 with the objective of keeping the d axis air-gap flux equal to the rotor permanent flux respectively. The grid side converter is used to keep the de-link capacitor voltage constant and exchange reactive power with grid. The validity of the established model and proposed control strategies are demonstrated by simulation system under the software package PSCAD/EMTDC and the operation performances of the generator are compared when controlled by the two reactive power control strategies.

关 键 词：直驱 永磁同步发电机 建模 运行控制 仿真 

分 类 号：TM315[电气工程—电机] TM614