Abstract
In this article, a circumscribing polygon integrated modular motor drive topology with shared cooling for the power converter and the electrical machine is proposed and benchmarked with the nonintegrated version. The proposed topology is applied on an axial flux permanent magnet synchronous machine. The topology is capable of mechanically mounting the power converter, sufficiently cooling both the power converter and the electrical machine, and combining both of them into the same housing. The mechanical and the thermal design are done to ensure thermal decoupling between the power converter and the motor winding, and to provide a low thermal resistance from the power converter and the electrical machine to the ambient. Due to the limited space available for the power converter module, wide bandgap semiconductor technology is chosen for the implementation of the converter module, thanks to their small package size and low power losses. A highly modular, integrated, and compact drive is achieved compared to the nonintegrated one. A computational fluid dynamics (CFD) model is developed for one module of the proposed integrated drive to evaluate the maximum current that can be injected by one converter module without exceeding the junction temperature limit of the switches and the maximum winding temperature. An experimental setup is built to validate the results of the introduced multiphysics models.
Highlights
T HE integrated modular motor drives (IMMD) combine the benefits of both worlds of integrated and modular drives.The integrated drive is a physical integration of the motor and the driving power electronics into one unit [1].Manuscript received June 15, 2020; revised August 28, 2020; accepted September 23, 2020
The experimental work is done using dc current to generate a well-defined heat in the switches, and the windings to validate the computational fluid dynamics (CFD) results and pulsewidth modulation (PWM) waveforms to evaluate the validity of the dc thermal measurements at real waveforms
A highly modular, integrated, and compact motor drive was proposed in this article and applied on a yokeless and segmented armature (YASA) axial flux permanent magnet synchronous machine (PMSM)
Summary
T HE integrated modular motor drives (IMMD) combine the benefits of both worlds of integrated and modular drives.The integrated drive is a physical integration of the motor and the driving power electronics into one unit [1].Manuscript received June 15, 2020; revised August 28, 2020; accepted September 23, 2020. T HE integrated modular motor drives (IMMD) combine the benefits of both worlds of integrated and modular drives. The integrated drive is a physical integration of the motor and the driving power electronics into one unit [1]. Manuscript received June 15, 2020; revised August 28, 2020; accepted September 23, 2020. Date of publication October 14, 2020; date of current version July 19, 2021. This work is part of the ModulAr SBO project funded and supported by Flanders Make vzw, the strategic research centre for the manufacturing industry. Color versions of one or more of the figures in this article are available online at https://ieeexplore.ieee.org This work is part of the ModulAr SBO project funded and supported by Flanders Make vzw, the strategic research centre for the manufacturing industry. (Corresponding author: Abdalla Hussein Mohamed.)
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