- By:
- Chowdhury, Md S; Barua, Himel ; Rallabandi, Vandana P; Wilkins, Jonathan P; Su, Gui-Jia ; Ribeiro, Pedro Eugenio M; Rowden, Brian Lynn; Ozpineci, Burak ; Kekelia, Bidzina; Narumanchi, Sreekant
- Page Number:
- 1724-1731
- Book Title:
- 2026 IEEE Applied Power Electronics Conference and Exposition (APEC)
- Publication Date:
- June 5, 2026
- Conference Name:
- APEC 2026
- Conference Location:
- San Antonio, Texas, United States of America
- Conference Sponsor:
- ieee
- View DOI Listing:
- https://doi.org/10.1109/APEC51134.2026.11517128
Abstract
The ever-increasing demand for compact, efficient, and high-performance traction drive systems for transportation applications has accelerated the development of integrated electric drives. In these systems, the electric machine and inverter are integrated within a single housing, offering significant advantages in electrical performance, volume, weight, cost, and overall system efficiency. Despite these benefits, such high levels of integration introduce a new set of challenges, particularly in power electronic design and component selection. This article presents an in-depth investigation of a highly integrated electric drive architecture with an internal stator-mounted inverter, highlighting key design considerations and trade-offs aimed exclusively at maximizing system power density.Based on a comprehensive review of the literature, the power density of a voltage-source-inverter–driven electric drive is primarily governed by the volumetric contributions of the power modules, heat sinks, and DC-link capacitors. Accordingly, this work focuses on the optimization of these three critical components to enhance the inverter’s overall power density. The proposed design achieves a power density of 100 kW/L, demonstrating the effectiveness of the presented approach for next-generation integrated electric drive systems.
