基于节点导纳法的感应发电机不对称稳态性能分析  

Analysis of Asymmetric Steady-state Performance of Induction Generator Based on Node Admittance Method

作　　者：许英辉 吴新振 XU Yinghui;WU Xinzhen(College of Electrical Engineering,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学电气工程学院,山东青岛266071

出　　处：《大电机技术》2020年第2期17-20,50,共5页Large Electric Machine and Hydraulic Turbine

摘　　要：针对带不对称负载的三角形接法自激感应发电机(SEIG),通过电路方法对其稳态运行状态进行分析。从对称分量法与等值电路出发搭建出数学模型,以一相为准推导了系统的输入导纳,基于节点导纳法求解模型中的关键变量。分析过程中考虑了三种不同负载下不对称运行情况,通用性强。利用一台2.2kW的感应电机进行理论计算与实验验证,计算值与实际值吻合较好,说明了本文论述方法求解SEIG独立电力系统稳态运行指标的可行性。For the triangle-connected self-excited induction generator(SEIG)with asymmetric load,the steady-state operation state is analyzed by circuit method.A mathematical model is established based on the symmetric component method and the equivalent circuit.The input admittance of the system is derived based on one phase,and the key variables in the model are solved based on the node admittance method.During the analysis,three types of asymmetric operation under different loads are considered,and the versatility is strong.A 2.2kW induction motor is used for theoretical calculation and experimental verification.The calculated value agrees well with the actual value,which illustrates the feasibility of the method discussed in this paper to solve the steady-state operation index of the SEIG independent power system.

关 键 词：自激感应发电机 不对称负载 稳态分析 对称分量法 节点导纳法 

分 类 号：TM343[电气工程—电机]