基于定子磁链定向的双馈风力发电系统仿真分析  

Simulation Analysis for DFIG Wind Generator System Based on Stator Flux Oriented Control

作　　者：陆畅[1] 周志锋[1] 智勇军[1] 

机构地区：[1]国网河南省电力公司平顶山供电公司,河南平顶山467001

出　　处：《电器与能效管理技术》2016年第23期32-40,共9页Electrical & Energy Management Technology

摘　　要：针对并网型风力发电系统仿真分析的工程需求,建立了DFIG网侧PWM变流器数学模型,推导了静止坐标系下的网侧变流器微分方程,设计了基于d轴电网电压定向的网侧变流器控制算法,实现电流跟踪控制和逆变器直流母线电压控制。建立了转子侧变流器数学模型,推导了转子电流与定子磁链之间的数学关系式,设计了定子磁链定向的DFIG转子电流控制算法,实现了有功功率和无功功率的解耦控制。在PLECS软件平台下搭建了2 MW双馈异步发电机的仿真模型,验证了数学模型和控制策略的正确性。To meet the practical requirement for grid-connected wind power generators, this paper presented the mathematical model of the grid-side converter of DFIG wind generators, and the differential equations of the grid- side converter was derived under stationaiy ABC frame. The d-axis of grid voltage oriented control scheme was developed, and the current tracking control as well as the dc-link voltage balancing control of the dc-link capacitor were proposed. Besides, the model of the rotor-side converter was developed, and the relations between the rotor current and stator flux were derived, and the rotor current control method based on the stator flux oriented control was designed. The 2 MW DFIG wind generator model was developed in the PLECS software platform. The correctness and effectiveness of the theoretical analysis were confirmed by the simulation results.

关 键 词：双馈风力发电 定子磁链定向 电网电压定向 PLECS 

分 类 号：TM461[电气工程—电器]