自激异步发电机带阻性负载恒压运行研究  

Research on Constant Voltage Operation of Self-Excited Induction Generator with Resistance Loads

作　　者：徐卫青[1] 郝宽胜[1] 兰勇[1] 柳尧华 

机构地区：[1]青岛大学电气工程系,青岛266071 [2]青岛雅和科技有限公司,青岛266071

出　　处：《船电技术》2006年第4期16-20,共5页Marine Electric & Electronic Engineering

摘　　要：为了保证自激异步发电机在阻性负载变化时定子电压稳定,采用改变电机转速或者机端电容的方法,本文以异步发电机带电阻性负载稳态运行时的等值电路为基础,推导了回路导纳方程,依据异步发电机稳态运行时回路导纳为零这一必要条件,选择回路导纳绝对值为目标函数,把端电压作为优化约束条件,利用坐标轮换法计算了不同负载下的保持机端电压值稳定的电容值和转速,并给出了不同负载时机端电容值与转速的关系曲线,说明异步发电机恒压运行时存在临界转速和临界电容,引入优化算法克服了传统方法计算繁琐且不能处理有约束问题的弱点,计算值与实验值的一致证明了方法的有效性。The paper presents an approach of computing the terminal capacitance and rator speea, oy which the self-excited induction generator＇s steady operation at constant voltage under variable electrical loads. Based on the steady state equivalent circuit of the induction generator, the loop resistance is calculated, from which the terminal capacitance and rotor speed is determined by a direct optimization method with constant terminal voltage as the constrained condition. The simple method, being advantageous over the traditional methods in dealing with constrained problems, is employed to obtain the terminal capacitance and the rotor speed. This paper also gives the variation of the terminal capacitance with the speed for the specified load impedance, showing that there is a critical speed and capacitance below which the constant terminal voltage can＇t be created. The perfect agreement between computed values and experimental values confirms the analysis method＇s correction.

关 键 词：异步发电机 等值电路 优化算法 临界电容 

分 类 号：TM343[电气工程—电机]