An Integrated Motor Drive with Enhanced Power Density Using Modular Converter Structure

Abdalla Hussein Mohamed, H. Vansompel, P. Sergeant
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引用次数: 2

Abstract

In this paper, an integrated motor drive with modular converter structure is analysed with different number of converter modules per phase. The integration concept is realized by designing a housing structure with a flat outer surface and a circular inner surface with a cooling channel in between. The converter modules are mounted on the outer flat surface and the stator components are attached to the inner surface. This integration topology is applied on a fifteen stator coil concentrated winding permanent magnet axial flux machine. The converter modules are implemented as half-bridge inverter using Gallium Nitride (GaN) technology. The cooling structure is optimized using computational fluid dynamics (CFD) simulations. The maximum thermally safe current that can be injected by one inverter module is computed. The maximum winding current is also calculated. Parallel connection of the inverter modules is suggested to maximize the thermal utilization of the windings while keeping the inverter switches junction temperature under the rated value. The CFD based computations are validated with experimental measurements.
采用模块化变换器结构提高功率密度的集成电机驱动器
本文对一种具有模块化变换器结构的集成电机驱动器进行了分析,分析了每相不同数量的变换器模块。一体化的概念是通过设计一个具有平坦外表面和圆形内表面的房屋结构来实现的,中间有一个冷却通道。所述变流器模块安装在所述外平面上,所述定子组件安装在所述内平面上。该集成拓扑结构应用于15定子线圈集中绕组永磁轴向磁通机上。变换器模块采用氮化镓(GaN)技术实现半桥逆变器。利用计算流体力学(CFD)模拟对冷却结构进行了优化。计算了一个逆变器模块所能注入的最大热安全电流。并计算了最大绕组电流。建议逆变器模块并联,在保证逆变器开关结温低于额定值的同时,最大限度地利用绕组的热。通过实验验证了基于CFD的计算结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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