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An Advanced Dual-Carrier-Based Multi-Optimized PWM Strategy of Three-Level Neutral-Point-Clamped Converters for More-Electric-Aircraft Applications

Guo, Feng; M. Diab, Ahmed; Shen Yeoh, Seang; Yang, Tao; Bozhko, Serhiy; Wheeler, Patrick; Zhao, Yue

An Advanced Dual-Carrier-Based Multi-Optimized PWM Strategy of Three-Level Neutral-Point-Clamped Converters for More-Electric-Aircraft Applications Thumbnail


Authors

Feng Guo

Ahmed M. Diab

Yue Zhao



Abstract

Since three-level neutral-point-clamped (3L-NPC) power generation units bring much competitiveness to the next-generation electric starter/generator (ESG) system for more-electric-aircraft (MEA) applications, the versatile multi-optimized pulse-width-modulation (PWM) becomes a key enabler to this technology. Regarding the mission profile of the state-of-art ESG, the operating points at the cruise feature a high modulation index and low power factor. This means that the neutral-point potential (NPP) fluctuation becomes severe. Besides, if switching states are not configured properly, not only could the lifetime of capacitors be threatened but also irreversible damage to bearing insulation occurs due to the common-mode voltage (CMV), followed by devastating effects on the reliability of other avionic facilities. Given the limitations of the 270VDC unipolar dc-bus structure, deep flux-weakening currents are constantly required for the high speed, resulting in more machine copper losses. To address these issues without any hardware-level efforts, an advanced PWM strategy with dual-carrier-based implementation is proposed in this article, which achieves boosted dc-link voltage utilization, CMV reduction and balanced NPP at the same time. Simulation results obtained from Simulink/PLECS and experimental results obtained from a 45 kW, 32 krpm ESG prototype system verify the effectiveness and feasibility of the proposed algorithm.

Citation

Guo, F., M. Diab, A., Shen Yeoh, S., Yang, T., Bozhko, S., Wheeler, P., & Zhao, Y. (2024). An Advanced Dual-Carrier-Based Multi-Optimized PWM Strategy of Three-Level Neutral-Point-Clamped Converters for More-Electric-Aircraft Applications. IEEE Transactions on Energy Conversion, 39(1), 356-367. https://doi.org/10.1109/TEC.2023.3312599

Journal Article Type Article
Acceptance Date Sep 4, 2023
Online Publication Date Sep 6, 2023
Publication Date Mar 1, 2024
Deposit Date Mar 21, 2024
Publicly Available Date Mar 21, 2024
Journal IEEE Transactions on Energy Conversion
Print ISSN 0885-8969
Electronic ISSN 1558-0059
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 39
Issue 1
Pages 356-367
DOI https://doi.org/10.1109/TEC.2023.3312599
Keywords Electrical and Electronic Engineering; Energy Engineering and Power Technology
Public URL https://nottingham-repository.worktribe.com/output/25077153
Publisher URL https://ieeexplore.ieee.org/document/10241964

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