torque ripple

This paper introduced commutation torque ripple process of brushless DC motor.

介绍了永磁无刷直流电机换相转矩脉动变化过程.

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Simulations and experimental results show that the system has quick response, low torque ripple and few harmonics, which makes it appropriable for ship propulsion systems.

仿真和实验结果表明，系统动态响应快，转矩脉动小，谐波含量少，低速性能良好，能够满足舰船电力推进的需要。

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But because of switched reluctance motor ( SRM) double convex type structure make motor in turns easy to produce great torque ripple and noise.

但由于开关磁阻电机（SRM）的双凸式结构使电机在转动时易产生极大转矩脉动、噪声。

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Applying duty ratio control technology can effectively reduce the torque ripple.

将占空比控制技术用于直接转矩控制系统中可以有效地减小转矩脉动。

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These analytical results show that the change of the slot width and pole pitch affect the performance of the motors greatly. It also demonstrates that skewing poles could efficiently decrease the torque ripple of PM motors.

分析结果表明，定子槽宽和极宽的变化会对电机性能产生较大影响，永磁电机采用斜极结构，可有效减小电磁转矩波动。

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Carlson etc. Analysis of Torque Ripple due to Phase Commutation in Brushless dc Machines.

张琛.直流无刷电动机原理及应用.北京:机械工业出版社,1996.

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Analysis and Comparison of Commutation Torque Ripple of PM Brushless DC Motor on Five PWM Modes

五种PWM方式对无刷电动机换相转矩脉动的分析和比较

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Aiming to minimize the torque ripple in condition of non-perfect BEMF waveform, the dissertation present a optimum current tracking control technique.

实际中一般是这两种情况都存在。针对这种反电动势波形偏离理想波形的情况，本文提出了一种最优电流跟踪法来抑制转矩脉动。

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Then, it proposes a two-stage modulation strategy to eliminate torque ripple during motor commutation process of seven switching drive topology. Simultaneously, it uses the current predictive control to suppress LC resonance phenomenon.

并且对七管驱动方式下的换相转矩脉动提出了一种双级调制策略，同时采用电流预测控制技术有效抑制了电路的LC谐振现象。

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The torque ripple arosed by the slot effect in PM motor are more significant in the low speed hub motor for electric vehicle use.

永磁电机由于齿槽效应产生的定位转矩和转矩脉动，在转速较低的轮毂电机中尤为显著。

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