A close functional and structural integration of passive elements is required to improve the power density of motor drives. Such power-dense motor drives are prerequisites in aerospace and automotive applications. This article presents a permanent magnet motor with an integrated filter inductor, which not only eliminates inductor losses but also removes its associated weight and volume. The motor with an integrated filter uses motor's inherent magnetics in order to use it as a filter inductance instead of adopting an external inductor option, which is traditionally placed outside the motor. A vector-controlled model, taking modulation and switching effect into account, has been developed by using MATLAB/Simulink tool. To experimentally validate the concept of the motor with an integrated filter inductor, the winding connections of an existing motor are modified. The comparative analysis, between the traditional and integrated motor drive systems, is carried out in terms of the magnitude of switching component, total system losses, weight, and volume. The total losses in the motor with integrated filter are reduced by 34.2% at 2100 r/min and 3-N·m load, when compared to the motor with traditional filter inductor, whereas, its weight and volume in the motor with integrated filter inductor are eliminated completely.

中文翻译：

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带有集成滤波电感的新型永磁同步电机，利用电机的固有磁性


为了提高电机驱动器的功率密度，需要对无源元件进行紧密的功能和结构集成。这种功率密集的电机驱动器是航空航天和汽车应用的先决条件。本文介绍了一种带有集成滤波电感器的永磁电机，它不仅消除了电感器损耗，而且还减轻了相关的重量和体积。具有集成滤波器的电机利用电机的固有磁性，将其用作滤波电感，而不是采用传统上放置在电机外部的外部电感器选项。利用MATLAB/Simulink工具建立了考虑调制和开关效应的矢量控制模型。为了通过实验验证具有集成滤波电感器的电机的概念，对现有电机的绕组连接进行了修改。对传统电机驱动系统和集成电机驱动系统之间的开关元件大小、系统总损耗、重量和体积进行了比较分析。与传统滤波电感电机相比，集成滤波器电机在2100 r/min、3 N·m负载下总损耗降低34.2%，且重量和体积降低被彻底消除。