Torque tripple has significant effect on performance of permanent magnet brushless DC motor. This paper presents a mathematical model built for such a motor, the analysis of torque tripple for a brushless DC motor wit...Torque tripple has significant effect on performance of permanent magnet brushless DC motor. This paper presents a mathematical model built for such a motor, the analysis of torque tripple for a brushless DC motor with sinusoidal flux distribution, which is verified by torque tripple experiments run with a test motor, and equations developed for torque tripple resulting from different sator current errors.展开更多
A new compensation method and an algorithm for compensating for the commutation torque ripples of the trapezoidal EMF brushless DC motor are put forward. Simulation and experimental results show that this method is co...A new compensation method and an algorithm for compensating for the commutation torque ripples of the trapezoidal EMF brushless DC motor are put forward. Simulation and experimental results show that this method is correct and practical.展开更多
The configuration of a brushless DC torque motor is introduced. According to the fundamental relation of the armature winding current and the air gap flux density, the ripple torque caused by the electrical errors of ...The configuration of a brushless DC torque motor is introduced. According to the fundamental relation of the armature winding current and the air gap flux density, the ripple torque caused by the electrical errors of a resolver is approached. And a polyphase multipole resolver is developed in the brushless DC torque motor. Finally, the experimental results are presented to illustrate the improvement of ripple torque in the brushless DC torque motor with the polyphase multipole resolver.展开更多
无刷直流电机(Brushless Direct Current Motor,BLDCM)作为一种广泛使用的电机装置,在换相过程中会造成母线电流波动,产生较强的转矩脉动,影响电机运行稳定性。本文对无刷直流电机产生换相转矩脉动和续流转矩脉动的原因进行分析,针对采...无刷直流电机(Brushless Direct Current Motor,BLDCM)作为一种广泛使用的电机装置,在换相过程中会造成母线电流波动,产生较强的转矩脉动,影响电机运行稳定性。本文对无刷直流电机产生换相转矩脉动和续流转矩脉动的原因进行分析,针对采用传统PWM调制出现的换相转矩脉动和续流转矩脉动过大的问题,采用了一种基于传统PWM调制优化后的改进型PWM调制策略,该调制策略能够有效的抑制换相转矩脉动和续流转矩脉动。MATLAB/Simulink仿真结果表明改进型PWM调制策略和传统的PWM调制相比在转矩脉动抑制上有更加优良的表现。展开更多
文摘Torque tripple has significant effect on performance of permanent magnet brushless DC motor. This paper presents a mathematical model built for such a motor, the analysis of torque tripple for a brushless DC motor with sinusoidal flux distribution, which is verified by torque tripple experiments run with a test motor, and equations developed for torque tripple resulting from different sator current errors.
文摘A new compensation method and an algorithm for compensating for the commutation torque ripples of the trapezoidal EMF brushless DC motor are put forward. Simulation and experimental results show that this method is correct and practical.
文摘The configuration of a brushless DC torque motor is introduced. According to the fundamental relation of the armature winding current and the air gap flux density, the ripple torque caused by the electrical errors of a resolver is approached. And a polyphase multipole resolver is developed in the brushless DC torque motor. Finally, the experimental results are presented to illustrate the improvement of ripple torque in the brushless DC torque motor with the polyphase multipole resolver.
文摘无刷直流电机(Brushless Direct Current Motor,BLDCM)作为一种广泛使用的电机装置,在换相过程中会造成母线电流波动,产生较强的转矩脉动,影响电机运行稳定性。本文对无刷直流电机产生换相转矩脉动和续流转矩脉动的原因进行分析,针对采用传统PWM调制出现的换相转矩脉动和续流转矩脉动过大的问题,采用了一种基于传统PWM调制优化后的改进型PWM调制策略,该调制策略能够有效的抑制换相转矩脉动和续流转矩脉动。MATLAB/Simulink仿真结果表明改进型PWM调制策略和传统的PWM调制相比在转矩脉动抑制上有更加优良的表现。