Sensorless Direct Torque Control for Electrically Excited Synchronous Motor Based on Injecting High-Frequency Ripple Current Into Rotor Winding

Zhou Yangzhong; Long Shipeng

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Sensorless Direct Torque Control for Electrically Excited Synchronous Motor Based on Injecting High-Frequency Ripple Current Into Rotor Winding

机译：Sensorless Direct Torque Control for Electrically Excited Synchronous Motor Based on Injecting High-Frequency Ripple Current Into Rotor Winding

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摘要

A novel rotor position angle estimator is proposed to achieve zero and very low operation speed for sensorless direct torque-controlled electrically excited synchronous motor (EESM) drive. First, high-frequency ripple current is injected into rotor winding, and second, using closed-loop torque control, high-frequency component is injected into electromagnetic torque to produce high-frequency stator current only in d-axis direction. At last, the rotor position angle is estimated with phase-locked loop principle. The stator flux and electromagnetic torque are calculated with stator flux current model and estimated rotor position angle, and then a sensorless direct torque-controlled EESM drive is constructed with estimated flux and torque. The experimental results show that the proposed sensorless EESM drive system can operate at zero and very low speed.

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来源
《IEEE Transactions on Energy Conversion》 |2015年第1期|246-253|共8页
作者
Zhou Yangzhong; Long Shipeng;
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作者单位

Fuzhou Univ, Dept Elect Engn & Automat, Fuzhou 350108, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类电工技术;
关键词
Direct torque control (DTC); electrically excited synchronous motor (EESM); sensorless; rotor high-frequency (HF) ripple current;

Sensorless Direct Torque Control for Electrically Excited Synchronous Motor Based on Injecting High-Frequency Ripple Current Into Rotor Winding

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