机电工程技术2024，Vol.53Issue(8)：32-35,4.DOI:10.3969/j.issn.1009-9492.2024-00036
矿井皮带机用感应电机无传感器控制研究
Research on Sensorless Control of Induction Motor for Mine Belt Conveyor
摘要
Abstract
A practical engineering method without speed control is proposed to solve the problem of difficulty in starting the induction motor without speed sensor system for high-power mine belt conveyor under load.The motor starts using a current single closed-loop I/F control,and after entering low-frequency operation,an adaptive state switching strategy is applied to adjust the torque current.When the system meets the set switching conditions,magnetic flux and speed closed-loop vector control are applied to achieve smooth state switching of speed and torque,meeting the starting and normal operation of the mine belt conveyor under various load conditions and the full speed range.Using a hybrid magnetic flux model as the reference model for the MRAS speed estimator,the motor can obtain more accurate speed estimation values during the low-frequency operation stage,which can enable the system to switch to vector control mode earlier.Load start and medium to high speed operation experiments are conducted on the AC drag prototype platform.The motor can start smoothly and meet the switching conditions at 3 Hz,smoothly switching to vector control mode.The motor speed response is fast,and the dynamic characteristics are good.The experimental results indicate the correctness and effectiveness of this method.关键词
无速度传感器/I/F控制/MRAS/状态切换Key words
speed sensorless/I/F control/MRAS/state switching分类
信息技术与安全科学引用本文复制引用
王建,杨龙月,施阳..矿井皮带机用感应电机无传感器控制研究[J].机电工程技术,2024,53(8):32-35,4.基金项目
国家自然科学基金青年科学基金资助项目(51607179) （51607179）
