Application of Frequency-Domain Noise-Source Model to Simulation of Time-Synchronized Near-Magnetic-Field Distribution above a Power Circuit

IF 1 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEJ Journal of Industry Applications Pub Date : 2023-01-01 DOI:10.1541/ieejjia.23005684

Keita Takahashi, Takaaki Ibuchi, Tsuyoshi Funaki

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Abstract

The high-electromagnetic-interference (EMI)-noise area in a power circuit should be clarified when designing a low-EMI-noise power converter. For example, shielding of the power circuit prevents the EMI noise propagation to other circuits via near field couplings. It is important to know the high-EMI-noise area which should be shielded. The EMI noise distribution can be visualized by measuring the near-magnetic-field distribution above the power circuit. However, we cannot measure the near-magnetic-field distribution if there is not enough space for scanning a magnetic field probe between the power circuit and other circuits. Therefore, we propose to adopt a three-dimensional electromagnetic simulation for acquiring the near-magnetic-field distribution above a power circuit. In this paper, we study the validity of the frequency-domain noise-source model for the simulation of the near-magnetic field distribution. We evaluate the near-magnetic-field distribution maps for turn-on and turn-off of the transistor, respectively. The high-EMI-noise area differs depending on frequencies. The high-EMI-noise area for turn-on is different from that for turn-off. We have clarified that each high-EMI-noise area can be predicted by the simulation.

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频域噪声源模型在电源电路上时间同步近磁场分布仿真中的应用

在设计低噪声电源变换器时，应明确电源电路中的高电磁干扰噪声区域。例如，电源电路的屏蔽可以防止EMI噪声通过近场耦合传播到其他电路。了解应该屏蔽的高emi噪声区域是很重要的。通过测量电源电路上方的近磁场分布，可以直观地看到电磁干扰噪声的分布。然而，如果在电源电路和其他电路之间没有足够的空间扫描磁场探针，我们就无法测量近磁场分布。因此，我们建议采用三维电磁模拟来获取电源电路上方的近磁场分布。本文研究了用频域噪声源模型模拟近磁场分布的有效性。我们分别评估了晶体管导通和关断时的近磁场分布图。高emi噪声区域因频率不同而不同。打开时的高emi噪声区域不同于关闭时的高emi噪声区域。我们已经阐明，每个高emi噪声区域可以通过模拟预测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEJ Journal of Industry Applications ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.80

自引率

17.60%

发文量

期刊介绍： IEEJ Journal of Industry Applications: Power Electronics - AC/AC Conversion and DC/DC Conversion, - Power Semiconductor Devices and their Application, - Inverters and Rectifiers, - Power Supply System and its Application, - Power Electronics Modeling, Simulation, Design and Control, - Renewable Electric Energy Conversion　　　 Industrial System - Mechatronics and Robotics, - Industrial Instrumentation and Control, - Sensing, Actuation, Motion Control and Haptics, - Factory Automation and Production Facility Control, - Automobile Technology and ITS Technology, - Information Oriented Industrial System Electrical Machinery and Apparatus - Electric Machines Design, Modeling and Control, - Rotating Motor Drives and Linear Motor Drives, - Electric Vehicles and Hybrid Electric Vehicles, - Electric Railway and Traction Control, - Magnetic Levitation and Magnetic Bearing, - Static Apparatus and Superconductive Application Publishing Ethics of IEEJ Journal of Industry Applications: 　　　 Code of Ethics on IEEJ IEEJ Journal of Industry Applications is a peer-reviewed journal of IEEJ (the Institute of Electrical Engineers of Japan). The publication of IEEJ Journal of Industry Applications is an essential building article in the development of a coherent and respected network of knowledge. It is a direct reflection of the quality of the work of the authors and the institutions that support them. IEEJ Journal of Industry Applications has "Peer-reviewed articles support." It is therefore important to agree upon standards of expected ethical behavior for all parties involved in the act of publishing: the author, the journal editor, the peer reviewer and IEEJ (the Institute of Electrical Engineers of Japan).