摘要
通过对无刷直流电机开通期间的相电流和关断期间的相电流分析,经过实际计算得到电磁转矩的表达式,得到相应的电磁转矩脉动曲线。基于电流预测方法通过将预测模型分为模型建立、反馈调整和性能优化3步,通过控制换相电流保持在稳定的状态,从而实现对转矩脉动的抑制。通过仿真和实际实验表明,该无刷直流电机调速系统在实际运行中具有转矩脉动小、响应速度快等优点。
The phase current of BLDCM during the opening period and shutdown period is analyzed. The electromagnetic torque expression is obtained by actual calculation,and then the corresponding electromagnetic torque ripple curve is obtained.The prediction model is divided into model establishment,feedback tuning and performance optimization with current prediction method. The phase commutation current is controlled in a stable state to suppress the torque ripple. The simulation and practical experiment results show that the BLDCM speed control system has the advantages of small torque ripple,fast response speed,etc.
出处
《现代电子技术》
北大核心
2016年第7期142-144,共3页
Modern Electronics Technique
基金
国家自然科学基金项目(31200541
31170668)
江苏高校优势学科建设工程资助项目(PAPD)
关键词
无刷直流电机
电流预测
转矩脉动
换相电流
BLDCM
current prediction
torque ripple
phase commutation current
