An Optimized Loss-Balancing Modulation Strategy for ANPC-3L Inverter

IF 1.7 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IET Power Electronics Pub Date : 2025-04-01 DOI:10.1049/pel2.70029

Kefeng Li, Guijing Xue, Fei Xiao, Jilong Liu, Zhuangzhi Dai, Zhiqin Mai

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引用次数: 0

Abstract

In existing modulation strategies for active neutral-point-clamped three-level (ANPC-3L) inverters, high-frequency and low-frequency switches are separated, with loss mainly concentrated in some fixed high-frequency operating switches, resulting in uneven loss distribution across switches among bridge arms. To address these issues, a loss-balance optimization modulation strategy is proposed. In this paper, the loss distribution of power switches under different commutation paths is analysed, and a loss-estimation model for switches is established based on the characteristics of power switches to quantify the total losses. Aimed at loss balancing for all power switches, the switching modes (commutation paths) in the modulation process are automatically selected by the proposed strategy, achieving relatively balanced losses among all switches. Experiments are carried out with an 18 kW three-phase ANPC-3L inverter. Compared with existing loss-balance strategies, the proposed strategy shows better loss (temperature) balance performance and almost equal efficiency.

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来源期刊

IET Power Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

5.50

自引率

10.00%

发文量

195

审稿时长

5.1 months

期刊介绍： IET Power Electronics aims to attract original research papers, short communications, review articles and power electronics related educational studies. The scope covers applications and technologies in the field of power electronics with special focus on cost-effective, efficient, power dense, environmental friendly and robust solutions, which includes: Applications: Electric drives/generators, renewable energy, industrial and consumable applications (including lighting, welding, heating, sub-sea applications, drilling and others), medical and military apparatus, utility applications, transport and space application, energy harvesting, telecommunications, energy storage management systems, home appliances. Technologies: Circuits: all type of converter topologies for low and high power applications including but not limited to: inverter, rectifier, dc/dc converter, power supplies, UPS, ac/ac converter, resonant converter, high frequency converter, hybrid converter, multilevel converter, power factor correction circuits and other advanced topologies. Components and Materials: switching devices and their control, inductors, sensors, transformers, capacitors, resistors, thermal management, filters, fuses and protection elements and other novel low-cost efficient components/materials. Control: techniques for controlling, analysing, modelling and/or simulation of power electronics circuits and complete power electronics systems. Design/Manufacturing/Testing: new multi-domain modelling, assembling and packaging technologies, advanced testing techniques. Environmental Impact: Electromagnetic Interference (EMI) reduction techniques, Electromagnetic Compatibility (EMC), limiting acoustic noise and vibration, recycling techniques, use of non-rare material. Education: teaching methods, programme and course design, use of technology in power electronics teaching, virtual laboratory and e-learning and fields within the scope of interest. Special Issues. Current Call for papers: Harmonic Mitigation Techniques and Grid Robustness in Power Electronic-Based Power Systems - https://digital-library.theiet.org/files/IET_PEL_CFP_HMTGRPEPS.pdf