摘要
牵引电机的转速和转子角度对列车的运行控制至关重要,但恶劣环境下光电编码器存在测量不准确问题。针对这一问题,提出一种基于旋转变压器的电机转速与转角测量技术,为提高该测量技术的准确性,文中构建并实现以双广义二阶积分器和TypeⅡ锁相环为核心的新型解码方案,引入对称分量法抑制旋转变压器解码误差,采用双广义二阶积分器提取旋转变压器输出信号的正序分量,利用TypeⅡ锁相环进行跟踪计算,获得准确的转速和转角信息。仿真和实验结果表明该测量技术能够在极端恶劣环境下准确解码牵引电机转速与转角信息,证实本方案应用于列车牵引电机转速与转角测量的可行性。
The speed of traction motor and the angle of the rotor are critical to the safe operation of the train.But the optical encoder has the problem of inaccurate measurement due to its nonideal performance in extremely harsh environment.In this paper,the measuring technique based on resolver was proposed.To improve the accuracy of this technique,a new decoding scheme based on the dual generalized second order integrator and TypeⅡPLL was presented.The symmetric component method was applied to suppress the decode output error of the resolver.This method utilized the dual generalized second order integrator to separate and extract the positive sequence components of the output signals of the resolver,and then applied the TypeⅡ PLL to perform tracking and calculation to obtain accurate speed and angle information.Simulation and experiment results show that the proposed technology can decode the motor speed and angle in harsh conditions accurately,verifying the feasibility of applying this method to the measurement of the speed and angle of traction motor.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2018年第1期50-56,共7页
Journal of the China Railway Society
基金
中国铁路总公司科技研究开发计划(2017J008-K)
关键词
牵引电机
旋转变压器
误差抑制
对称分量
traction motor
resolver
error suppression
symmetrical components
