中国电机工程学报Issue(1)：223-230,8.DOI:10.13334/j.0258-8013.pcsee.2015.01.027
基于转子高频脉动电流注入的同步电动机无位置传感器型直接转矩控制
Sensorless Direct Torque Control for Synchronous Motors Based on Injection of High-frequency Ripple Currents Into the Rotor Winding
周扬忠 1龙世鹏1
作者信息
- 1. 福州大学电气工程与自动化学院，福建省福州市 350108
- 折叠
摘要
Abstract
A novel rotor position angle estimator is proposed to achieve zero and very low operating speed for a sensorless direct torque controlled electrically excited synchronous motor (ESM) drive. Firstly, high-frequency ripple currents are injected into the rotor circuit, and secondly, using the torque close-loop, the high-frequency component is injected into torque to produce high-frequency stator currents only in the d-axis direction. At last, the rotor position angle is estimated with the phase-locked loop principle. The stator flux and torque are calculated with the stator flux current model and the estimated rotor position angle, and then the sensorless direct torque controlled ESM drive is constructed with estimated flux and torque. The results of experiments show that the proposed sensorless drive system can operate at the zero and very low speed under any load.关键词
电励磁同步电动机/直接转矩控制/无位置传感器/转子高频脉动电流Key words
electrically excited synchronous motor (ESM)/direct torque control/sensorless/rotor high-frequency ripple current分类
信息技术与安全科学引用本文复制引用
周扬忠,龙世鹏..基于转子高频脉动电流注入的同步电动机无位置传感器型直接转矩控制[J].中国电机工程学报,2015,(1):223-230,8.
