Highly Reliable Power Circuit Configuration with SiC Chopper Module for Hybrid Fuel Cell and Battery Power System for Urban Air Mobility (UAM) Applications

Moon-Seop Choi and Chong-Eun Kim ()
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Moon-Seop Choi: Department of Railroad Electrical and Electronic Engineering, Korea National University of Transportation, Uiwang 16106, Republic of Korea
Chong-Eun Kim: Department of Railroad Electrical and Information Engineering, Korea National University of Transportation, Uiwang 16106, Republic of Korea

Energies, 2025, vol. 18, issue 12, 1-17

Abstract: This paper proposes a high-reliability power conversion system optimized for Urban Air Mobility (UAM) applications, which utilizes silicon carbide (SiC) chopper modules within a hybrid fuel cell and battery structure. The system features a redundant power configuration that employs both a main and an auxiliary battery to ensure continuous and stable power supply, even under emergency or fault conditions. By integrating SiC-based power converters, the proposed system achieves high efficiency, low switching losses, and enhanced thermal performance, which are crucial for the space- and weight-constrained environment of UAM platforms. Furthermore, a robust control strategy is implemented to enable smooth transitions between multiple power sources, maintaining operational stability and safety. System-level simulations were conducted using PowerSIM to validate the performance and reliability of the proposed architecture. The results demonstrate its effectiveness, making it a strong candidate for future UAM power systems requiring lightweight, efficient, and fault-tolerant power solutions.

Keywords: boost converter; buck converter; battery; fuel cell; SiC chopper module; urban air mobility (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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