| 变角度导通法补偿换相转矩脉动 |
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| 引用本文： | 郝晓宇,窦满峰,张浩.变角度导通法补偿换相转矩脉动[J].微特电机,2011,39(8). |
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| 作者姓名： | 郝晓宇 窦满峰 张浩 |
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| 作者单位： | 西北工业大学,陕西西安,710072 |
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| 摘 要： | 针对微型无人机电动力系统对低噪声、高平稳性的要求,对无刷直流电动机换相过程建立数学模型,分析了转矩脉动,提出一种变角度导通的实现方法,即根据电机转速选择合适的导通角度,以补偿无刷直流电动机由于换相引起的转矩脉动.仿真结果表明,转矩脉动量与导通角度的大小不成正比,成凹形关系.相比120.导通方式,采用变角度导通法使脉动幅值减小了35％.结果证明变角度导通法可以有效抑制无刷直流电动机换相转矩脉动,减小噪声,提高微型无人机的平稳性.
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| 关 键 词： | 无刷直流电机 转矩脉动 换相 变角度导通 |
Attenuation of Commutation Torque Ripples by the Variable Commutation Angle Method |
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| HAO Xiao-yu,DOU Man-feng,ZHANG Hao.Attenuation of Commutation Torque Ripples by the Variable Commutation Angle Method[J].Small & Special Electrical Machines,2011,39(8). |
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| Authors: | HAO Xiao-yu DOU Man-feng ZHANG Hao |
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| Affiliation: | HAO Xiao-yu,DOU Man-feng,ZHANG Hao(Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | According to requirements of low noises,high stability for the electrical drives of micro-UAVs,a mathematic model of commutation process in BLDCM was derived to analysis torque ripples.This paper proposed a variable-commutation-angle method,in which conduction angle was varied with speed in order to compensate the commutation torque ripples.Simulation result shows that commutation torque ripples are not proportional to conduction angle,but a concave-relationship between them.Compared with traditional method... |
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| Keywords: | BLDCM torque ripple commutation variable commutation angle |
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