{"title":"Predicting core losses in power converters based on open source database","authors":"Yan Zhou, Minmin Zhang","doi":"10.1049/pel2.70009","DOIUrl":null,"url":null,"abstract":"<p>Core losses are closely related to flux densities, frequencies, temperatures, exciting waveforms, and DC biases. Hysteresis losses and dynamic losses are considered the main components of core losses. A method for predicting core losses based on an open-source database and a data-driven physical model is proposed. To a certain predicted point, two paths in the procedure can be executed automatically. First, if there are two points in the database with similar working conditions to the predicted point, core loss power density can be directly predicted based on separate equations. Secondly, if loss power density for specific waveforms in the database are missing, hysteresis loss power density and dynamic loss power density under sinusoidal excitations can be utilized to estimate core loss power density for specific waveforms. Based on the proposed method, the impact of temperature on hysteresis loss power density and dynamic loss power density can also be individually fitted and analysed. The proposed concepts demonstrate good flexibility in handling various complex waveforms in power electronics and have been accurately verified using the loss data of N49 and N87 in the MagNet database.</p>","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70009","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IET Power Electronics","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1049/pel2.70009","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Core losses are closely related to flux densities, frequencies, temperatures, exciting waveforms, and DC biases. Hysteresis losses and dynamic losses are considered the main components of core losses. A method for predicting core losses based on an open-source database and a data-driven physical model is proposed. To a certain predicted point, two paths in the procedure can be executed automatically. First, if there are two points in the database with similar working conditions to the predicted point, core loss power density can be directly predicted based on separate equations. Secondly, if loss power density for specific waveforms in the database are missing, hysteresis loss power density and dynamic loss power density under sinusoidal excitations can be utilized to estimate core loss power density for specific waveforms. Based on the proposed method, the impact of temperature on hysteresis loss power density and dynamic loss power density can also be individually fitted and analysed. The proposed concepts demonstrate good flexibility in handling various complex waveforms in power electronics and have been accurately verified using the loss data of N49 and N87 in the MagNet database.
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
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