| 反电势限幅对宽调速范围同步磁阻永磁电机设计的影响 |
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| 引用本文： | 郭伟,张承宁.反电势限幅对宽调速范围同步磁阻永磁电机设计的影响[J].北京理工大学学报,2008,28(10):860-864. |
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| 作者姓名： | 郭伟 张承宁 |
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| 作者单位： | 北京理工大学,机械与车辆工程学院,电动车工程中心,北京,100081;北京理工大学,机械与车辆工程学院,电动车工程中心,北京,100081 |
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| 摘 要： | 针对弱磁能力很强的同步磁阻永磁(SR-PM)电机的过高空载反电势会导致逆变器损坏的问题,提出了在电机设计时对其进行限幅的设计策略,并将其和通常的无限幅的设计策略进行了性能对比和参数优化.结果表明,无限幅策略主要考虑电机、逆变器成本的平衡,限幅策略的电机设计的瓶颈是用更小的电流产生低速下的转矩,因此必须充分利用SR-PM电机的磁阻特性产生转矩,但磁阻特性的利用依然存在一个上限.
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| 关 键 词： | 同步磁阻永磁电机 电机设计 弱磁 |
| 收稿时间： | 2007/12/27 0:00:00 |
Effect of the Back-EMF Limiting of Broad Adjustable Speed Synchronous Reluctance Permanent Magnet Motors |
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| GUO Wei and ZHANG Cheng-ning.Effect of the Back-EMF Limiting of Broad Adjustable Speed Synchronous Reluctance Permanent Magnet Motors[J].Journal of Beijing Institute of Technology(Natural Science Edition),2008,28(10):860-864. |
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| Authors: | GUO Wei and ZHANG Cheng-ning |
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| Institution: | School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | A back-electromotive force(EMF) limiting design strategy is proposed to avoid damage to the inverters caused by the excessively high level back-EMF of the synchronous reluctance permanent magnet(SR-PM) motors with high field-weakening capability.Performance analysis and the parameter optimization of this strategy are compared with the conventional design strategy without back-EMF limitation.The results show that the cost trade-off between inverters and motors is the main consideration under the conventional design strategy.On the other hand,the bottleneck of the design with back-EMF limitation is how to produce enough torque at low speed with smaller current.Consequently,the reluctance characteristics of SR-PM motors must be fully utilized.However,there is also an upper bound of this utilization. |
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| Keywords: | synchronous reluctance permanent magnet motor motor design field-weakening |
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