基于正负序的双dq电流控制策略的双馈风电机组研究  

Study on Doubly-Fed Wind Turbine Based on Positive and Negative Sequence Double dq Current Control Strategy

作　　者：李巧琦 马丽军 LI Qiaoqi;MA Lijun(Nantong Institute of Tecnology,Nantong 226000,China)

机构地区：[1]南通理工学院,江苏南通226000

出　　处：《通信电源技术》2024年第4期4-6,共3页Telecom Power Technology

基　　金：南通理工学院优秀本科毕业设计(论文)培育计划项目(BS202308)。

摘　　要：针对双馈风力发电系统中存在的问题,结合双馈风电机的正负序数学模型,研究不对称电网下双馈风电机的定子输出有功、无功以及发电机的电磁转矩。考虑电网电压不对称情况,为确保电力系统的安全运转,采用基于正负序旋转坐标系的双dq电流控制策略。该策略将电力系统的电流分成2个部分,分别由正负序旋转坐标系控制,进一步降低电网电压不平衡所产生的危害。经MATLAB/Simulink模拟仿真,证明了该控制策略在解决电网电压不平衡问题中的可行性和有效性。In view of the problems existing in the double-fed wind motor system,the mathematical model of the double-fed wind motor and the electromagnetic torque of the generator are studied.Considering the voltage asymmetry of the power grid,in order to ensure the safe operation of the power system,we adopt the double dq current control strategy based on the positive and negative sequence rotation coordinate system,and the current of the power system is divided into two parts,respectively controlled by the positive and negative sequence rotation coordinate system,to further reduce the harm caused by the voltage imbalance of the power grid.The MATLAB/Simulink simulation proves the feasibility and effectiveness of the control strategy in solving the problem of power grid voltage imbalance.

关 键 词：电网不对称 不平衡电网电压 正负序分离 网侧变换器 

分 类 号：TM614[电气工程—电力系统及自动化]