Modeling and Comparison of Machine and Converter Losses for PWM and PAM in High-Speed Drives
Modeling and Comparison of Machine and Converter Losses for PWM and PAM in High-Speed Drives
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DOI：
10.1109/icelmach.2012.6350226
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发表时间：
2012-11
影响因子：
4.4
通讯作者：
L. Schwager;A. Tuysuz;C. Zwyssig;J. Kolar
中科院分区：
文献类型：
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作者：
L. Schwager;A. Tuysuz;C. Zwyssig;J. Kolar
对于变速驱动器，机器和转换器的相互作用变得越来越重要，特别是对于高速应用，这主要是由于转换器调制对机器损耗的影响。需要了解驱动系统不同组件的损耗分配，以便选择理想的机器和调制组合。在本文中，考虑了调制类型，介绍了用于计算机器的转子损耗、铜损耗和铁芯损耗以及逆变器损耗的单独模型。这些模型是通过考虑由脉冲幅度调制 (PAM) 和脉宽调制 (PWM) 转换器驱动的两种典型高速永磁同步电机拓扑（有槽电机和无槽电机）而开发的。这些模型适用于两台现成的机器和一个使用 PAM 或 PWM 运行的转换器。还描述了用于实验验证模型的测试台，并将模型结果与测量结果进行比较。结果表明，PAM 可为本文考虑的高速机器带来更高的整体效率。然而，PWM 可用于将损耗从转子转移到转换器，但代价是降低整体驱动效率。讨论了这些结果可能带来的好处。
For variable-speed drives, the interaction of the machine and the converter is becoming increasingly important, especially for high-speed applications, mainly due to the effect of the converter modulation on the machine losses. The allocation of the losses to different components of the drive system needs to be known in order to choose the ideal machine and modulation combination. In this paper, individual models are introduced for calculating the rotor, copper, and core losses of the machine as well as the inverter losses, taking the modulation type into account. These models are developed by considering two typical high-speed permanent-magnet synchronous motor topologies (slotted and slotless machines) driven by pulse-amplitude modulation (PAM) and pulsewidth modulation (PWM) converters. The models are applied to two off-the-shelf machines and a converter operating with either PAM or PWM. The test bench used to experimentally verify the models is also described, and the model results are compared to the measurements. The results show that PAM produces a higher overall efficiency for the high-speed machines considered in this paper. However, PWM can be used to move the losses from the rotor to the converter at the expense of decreasing the overall drive efficiency. The possible benefits of these results are discussed.