| 有效平滑无刷直流电机转矩的新方法 |
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| 引用本文： | 张晓峰,吕征宇.有效平滑无刷直流电机转矩的新方法[J].电力电子技术,2007,41(2):102-104. |
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| 作者姓名： | 张晓峰 吕征宇 |
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| 作者单位： | 浙江大学,浙江,杭州,310027 |
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| 摘 要： | 在无刷直流电机(Brushless DC Motor,简称BLDCM)数学模型的基础上,分析了传统PWM调制方式对BLDCM非导通相引起续流电流的原因,以及该续流电流导致非换相期间的电磁转矩脉动的现象.通过原理分析及数学推导,提出在三相逆变桥输入端加上前级直流变换器,以控制电机的新策略.该方法在理论上消除了BLDCM在非换相区内的转矩脉动,并且利用试验证明了该方法的有效性.
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| 关 键 词： | 无刷直流电机 驱动电路 转矩控制 |
| 文章编号： | 1000-100X（2007）02-0102-03 |
| 修稿时间： | 2006-10-16 |
New BLDCM Drive Method to Smooth the Torque |
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| ZHANG Xiao-feng,L Zheng-yu.New BLDCM Drive Method to Smooth the Torque[J].Power Electronics,2007,41(2):102-104. |
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| Authors: | ZHANG Xiao-feng L Zheng-yu |
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| Affiliation: | Zhejiang University, Hangzhou 310027, China |
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| Abstract: | This paper presents a comprehensive research on torque ripples of brushless dc motor drive in conduction region based on the mathematical models.The phenomenon of torque ripples of conduction exists because of diode free-wheeling happened under the conventional PWM schemes.Through theoretical and mathematical analysis,a new method for reducing the torque ripple in brushless dc motors has been proposed by adding the DC-DC converter that regulates the amplitude of the current.So in such drives,torque ripples are eliminated in conduction region.Effectiveness of the proposed control method is verified by experiments. |
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| Keywords: | brushless DC motor driving circuit torque control |
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