基于PSCAD的双馈风电机组建模与仿真

双馈感应风电机组仿真建模研究的文献很多，但鲜有描述双馈风电机组详细建模过程的。为此，介绍在PscAD／EMTcD软件中建立包含风力机、双馈风力发电机、变频器和控制系统的双馈感应风电机组的全过程，在此基础上搭建系统电磁暂态仿真模型并进行仿真分析。仿真结果表明所构建的模型可实现有功、无功功率的解耦控制和最大风能跟踪；实现保持直流母线电压恒定和交流侧单位功率因素控制；与实际双馈风电机组的风速-输出功率具有较高的一致性。

Modeling and Simulation of Doubly-fed Induction Generator Based on PSCAD

There are many documents on studying simulation modeling for doubly-fed induction generator but few on detailed modeling process. Therefore, this paper introduces overall process of establishing doubly-fed induction generator model inclu- ding wind power generator, doubly-fed wind power generator, transducer and control system in Power Systems Computer Aided Design/Electromagnetic Transient in DC System software. On the above basis, it discusses establishment of electro- magnetic transient simulation model for the system and proceeds simulation analysis. The simulation result indicates the model is feasible to realize active and reactive power decoupling control and maximum power energy tracing. Meanwhile, this model is able to keep constant direct current bus voltage and realize control for alternative current side unit power factor which is provided with consistency as practical wind speed-output power of the doubly-fed induction generator.