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学者姓名：陈为
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Abstract ：
High-power inductors are fundamental components in high-power DC-DC converters, with their performance being a crucial metric of converter efficiency. This paper presents an in-depth analysis of a novel calculation method for the air gap length in such inductors. Taking into account the effects of air gap diffusion and the winding magnetic field, an expression for the air gap diffusion radius is derived, focusing on a distributed air gap structure. Furthermore, models for calculating the air gap and winding reluctance are developed, grounded in electromagnetic field theory. An equivalent magnetic circuit model, formulated based on Kirchhoff's second law, facilitates the proposed method for air gap length calculation. This study also involves the development of 3D models for both discrete and decoupled integrated inductors. The comparison between simulation outcomes and calculated air gap lengths indicates a maximum error of less than 8%, with the minimum error being as low as - 0.79%. Compared with traditional methods, the calculation method proposed in this paper has significant advantages. Additionally, the discrepancy between calculated values and experimental measurements is found to be 1.11%. These results validate the accuracy and applicability of the theoretical analysis and calculation method, underscoring their significance in the design and optimization of high-power DC-DC converters.
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| GB/T 7714 | Zeng, Xiaohui , Chen, Wei , Yang, Lei et al. An accurate calculation method for inductor air gap length in high power DC-DC converters [J]. | SCIENTIFIC REPORTS , 2024 , 14 (1) . |
| MLA | Zeng, Xiaohui et al. "An accurate calculation method for inductor air gap length in high power DC-DC converters" . | SCIENTIFIC REPORTS 14 . 1 (2024) . |
| APA | Zeng, Xiaohui , Chen, Wei , Yang, Lei , Chen, Qingbin , Huang, Yuping . An accurate calculation method for inductor air gap length in high power DC-DC converters . | SCIENTIFIC REPORTS , 2024 , 14 (1) . |
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在无线电能传输(wireless power transfer,WPT)系统中,偏移是不可避免的,偏移会引起系统参数的变化从而影响系统的传输性能.基于S-S和P-S补偿拓扑,提出一种具有抗偏移特性的双耦合 SP-S 补偿的紧凑型 WPT 系统.该系统采用两个同轴布置、相互解耦的圆角方形线圈作为能量的发射线圈,其与单一方形接收线圈均有耦合,提升了 X方向和 Y 方向的抗偏移容忍度.通过谐振参数配置使接收线圈在偏移的过程中,一个线圈回路的输出增加,另一个线圈回路输出减少,从而使系统输出随接收线圈位置偏移波动平缓.提出方形解耦线圈结构参数的设计方法,并分析发射端并联补偿电容对输出抗偏移性能的影响.最后,搭建实验平台验证该方法的有效性与系统的抗偏移能力.
Keyword ：
双耦合 双耦合 抗偏移 抗偏移 无线电能传输 无线电能传输 解耦线圈 解耦线圈
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| GB/T 7714 | 谢文燕 , 陈为 , 陈庆彬 et al. 双耦合SP-S补偿紧凑型抗偏移WPT系统 [J]. | 中国电机工程学报 , 2024 , 44 (2) : 714-724,中插24 . |
| MLA | 谢文燕 et al. "双耦合SP-S补偿紧凑型抗偏移WPT系统" . | 中国电机工程学报 44 . 2 (2024) : 714-724,中插24 . |
| APA | 谢文燕 , 陈为 , 陈庆彬 , 江彦伟 . 双耦合SP-S补偿紧凑型抗偏移WPT系统 . | 中国电机工程学报 , 2024 , 44 (2) , 714-724,中插24 . |
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With the widespread application of EMI filters, a method to improve power density has become a main concern in switch mode power supplies. Many previous works have been done for improving the EMI filtering performance of chokes. This article investigates an integrated choke structure that can minimize the leakage magnetic flux, enlarge the DM inductance, and improve the DM noise suppression performance. Compared to discrete EMI filter inductors, the proposed stacked choke scheme can integrate CM and DM chokes into toroidal cores by applying a combination of different types of toroidal cores. The proposed inductor can exhibit better DC magnetic saturation characteristic. Finite Element Method (FEM) simulations, impedance measurement, insertion loss and conducted EMI noise spectrums (150 kHz-30 MHz) are used to validate the accuracy of the theoretical analysis and the proposed equivalent magnetic reluctance models.
Keyword ：
Common mode Common mode Differential model Differential model Electromagnetic interference Magnetic component Electromagnetic interference Magnetic component Integrated inductor Integrated inductor Leakage flux Leakage flux
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| GB/T 7714 | Fu, Kaining , Qiu, Zhiyong , Chen, Wei . Integrated filtering choke for SMPS with enhanced EMI noise suppression performance [J]. | JOURNAL OF POWER ELECTRONICS , 2024 , 24 (12) : 2000-2011 . |
| MLA | Fu, Kaining et al. "Integrated filtering choke for SMPS with enhanced EMI noise suppression performance" . | JOURNAL OF POWER ELECTRONICS 24 . 12 (2024) : 2000-2011 . |
| APA | Fu, Kaining , Qiu, Zhiyong , Chen, Wei . Integrated filtering choke for SMPS with enhanced EMI noise suppression performance . | JOURNAL OF POWER ELECTRONICS , 2024 , 24 (12) , 2000-2011 . |
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Pad misalignment is almost inevitable in most wireless power transfer (WPT) systems, which leads to system performance degradation due to the variation of system parameters. Based on S-S and P-S compensation topology, this paper proposes a compact WPT system with dual-coupled SP-S compensation with anti-offset characteristics. Two coaxially arranged, mutually decoupled, rounded square coils are used as the energy transmitting coils, which are coupled with a single square receiving coil to improve the anti-offset tolerance in the X and Y directions. In the process of receiving coil offset, the output of one transmitting coil loop is increased and the output of the other coil loop is reduced by resonance parameter configuration, so that the system output fluctuates gently with the offset of the receiving coil. The design method of the structural parameters of the square decoupling coil is put forward and the influence of shunt compensation capacitance on the offset resistance of output is also analyzed. An experimental platform is built to verify the feasibility of the proposed method and the anti-misalignment performance of the proposed WPT system. ©2024 Chin.Soc.for Elec.Eng.
Keyword ：
Alignment Alignment Energy transfer Energy transfer Inductive power transmission Inductive power transmission
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| GB/T 7714 | Xie, Wenyan , Chen, Wei , Chen, Qingbin et al. Compact Anti-offset WPT System With Dual-coupled SP-S Compensation [J]. | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (2) : 714-724 . |
| MLA | Xie, Wenyan et al. "Compact Anti-offset WPT System With Dual-coupled SP-S Compensation" . | Proceedings of the Chinese Society of Electrical Engineering 44 . 2 (2024) : 714-724 . |
| APA | Xie, Wenyan , Chen, Wei , Chen, Qingbin , Jiang, Yanwei . Compact Anti-offset WPT System With Dual-coupled SP-S Compensation . | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (2) , 714-724 . |
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In this paper, the magnetic density distribution of three-phase common-mode inductors under different magnetic bias is obtained by finite element simulation of electromagnetic field, and the segmental reluctance model of the vertical core is established. The dynamic permeability distribution of three-phase common-mode choke is obtained by combining the characteristic curve of the material, so as to calculate the dynamic inductance under different magnetic bias. The establishment of the model provides design guidance for the optimization design of the common mode choke, reducing the volume and improving the noise suppression ability. The simulation results agree well with the experimental results, which shows that the proposed calculation method for the dynamic inductance of the common mode choke is effective. © 2024 IEEE.
Keyword ：
Common mode choke Common mode choke Dynamic inductance Dynamic inductance Magnetic bias Magnetic bias Magnetic field distribution Magnetic field distribution
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| GB/T 7714 | Kong, Y. , Chen, W. . Simulation and Calculation of Three-Phase Common Mode Inductance Considering Biased Magnetic Effects [未知]. |
| MLA | Kong, Y. et al. "Simulation and Calculation of Three-Phase Common Mode Inductance Considering Biased Magnetic Effects" [未知]. |
| APA | Kong, Y. , Chen, W. . Simulation and Calculation of Three-Phase Common Mode Inductance Considering Biased Magnetic Effects [未知]. |
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Aiming at the problem that it is difficult to accurately measure and model the core losses of high and low frequency composite excitation, based on the detailed analysis of the limitations of the existing core losses measurement methods and core losses models, a core losses measurement system of high and low frequency composite excitation is built based on DC power method in this paper. The measurement accuracy is verified with the air-core inductor whose loss can be accurately measured. Finally, the core losses model of high and low frequency composite excitation is proposed based on the core losses model of PWM wave excitation under DC bias, and the experimental results show that the maximum relative error is −8.83%, which has high accuracy. ©2024 Chin.Soc.for Elec.Eng.
Keyword ：
Magnetic cores Magnetic cores
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| GB/T 7714 | Wang, Jinghui , Lu, Zhicheng , Chen, Wei . Research on Quantization of Core Losses of High and Low frequency Composite Excitation [J]. | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (10) : 4091-4102 . |
| MLA | Wang, Jinghui et al. "Research on Quantization of Core Losses of High and Low frequency Composite Excitation" . | Proceedings of the Chinese Society of Electrical Engineering 44 . 10 (2024) : 4091-4102 . |
| APA | Wang, Jinghui , Lu, Zhicheng , Chen, Wei . Research on Quantization of Core Losses of High and Low frequency Composite Excitation . | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (10) , 4091-4102 . |
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共模电感由绕组和磁芯组成,锰锌铁氧体可以作为共模电感的磁芯,其高频参数的频变特性使共模电感的阻抗特性在150 kHz～30 MHz内呈非线性.针对传统共模电感集总电路模型与实测阻抗特性存在较大偏差,难以准确预测共模电感在高频段阻抗特性的问题,分析磁芯材料参数与绕组绕制方式对共模电感高频阻抗特性的影响;从共模电感分布电容特性的角度阐述磁性材料参数与绕组结构对分布电容大小的作用机理;提出考虑磁芯相关频变参数的共模电感宽频段阻抗仿真建模方法,结合阻抗测试验证所提方法的有效性.
Keyword ：
仿真建模 仿真建模 共模电感 共模电感 分布电容 分布电容 阻抗特性 阻抗特性
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| GB/T 7714 | 连振珠 , 傅恺宁 , 陈为 . 考虑频变特性的共模电感宽频段阻抗建模方法 [J]. | 电源学报 , 2024 , 22 (5) : 28-36 . |
| MLA | 连振珠 et al. "考虑频变特性的共模电感宽频段阻抗建模方法" . | 电源学报 22 . 5 (2024) : 28-36 . |
| APA | 连振珠 , 傅恺宁 , 陈为 . 考虑频变特性的共模电感宽频段阻抗建模方法 . | 电源学报 , 2024 , 22 (5) , 28-36 . |
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针对高低频复合励磁磁元件磁心损耗难以精确测量和建模的问题,在详细分析现有磁心损耗测量方法和磁心损耗模型局限性的基础上,根据直流功率法测量原理搭建高低频复合励磁磁心损耗测量系统,利用损耗能精确测量的空心电感验证其测量精度.最后,基于直流偏置下脉宽调制(pulse width modulation,PWM)波励磁的磁心损耗模型,提出高低频复合励磁磁性元件的磁心损耗预测模型,并实验验证预测模型最大相对误差为-8.83%,具有较高的精度.
Keyword ：
模型 模型 直流功率法 直流功率法 磁心损耗 磁心损耗 磁滞回线 磁滞回线 高低频复合励磁 高低频复合励磁
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| GB/T 7714 | 汪晶慧 , 卢志诚 , 陈为 . 高低频复合励磁磁心损耗量化的研究 [J]. | 中国电机工程学报 , 2024 , 44 (10) : 4091-4102,中插29 . |
| MLA | 汪晶慧 et al. "高低频复合励磁磁心损耗量化的研究" . | 中国电机工程学报 44 . 10 (2024) : 4091-4102,中插29 . |
| APA | 汪晶慧 , 卢志诚 , 陈为 . 高低频复合励磁磁心损耗量化的研究 . | 中国电机工程学报 , 2024 , 44 (10) , 4091-4102,中插29 . |
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Abstract ：
为了搭建适合工程批量应用的高频变压器共模抑制特性评估平台,分析变压器的共模噪声传导机理,研究变压器通道上共模噪声的传导特性,评估变压器对共模噪声的抑制能力.首先,通过函数发生器产生高频跳变电位信号,将其施加于变压器原边绕组以模拟变压器的共模噪声传输特性;其次,采用示波器捕捉共模信号在采样电阻上产生的电压降的值,判断变压器对共模噪声的抑制效果,分析评估平台中采样电阻的阻值选取对评估结果的影响;最后,对比评估结果与传导电磁干扰频谱的测试结果,验证所提变压器共模抑制特性评估方法的有效性.
Keyword ：
共模 共模 容性耦合 容性耦合 电磁干扰 电磁干扰 高频变压器 高频变压器
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| GB/T 7714 | 傅恺宁 , 涂江涛 , 陈为 . 高频变压器传导共模干扰分析与评估 [J]. | 电源学报 , 2024 , 22 (5) : 37-43 . |
| MLA | 傅恺宁 et al. "高频变压器传导共模干扰分析与评估" . | 电源学报 22 . 5 (2024) : 37-43 . |
| APA | 傅恺宁 , 涂江涛 , 陈为 . 高频变压器传导共模干扰分析与评估 . | 电源学报 , 2024 , 22 (5) , 37-43 . |
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For the first time, a direct electromagnetic force closed-loop control strategy for a contactor is proposed in this article. First, an electromagnetic force observer based on a neural network is designed according to a binary one-to-one mapping of the electromagnetic mechanism parameters to observe the real-time electromagnetic force. Then, the real-time spring reaction force is obtained by combining the observed electromagnetic force with the mechanical motion equation and the spring reaction equation. Finally, a constant force margin is added to the real-time reaction force as the reference curve, and the real-time observed electromagnetic force is used as the feedback; thus, direct electromagnetic force closed-loop control is realized through hysteresis regulation. This scheme can control the constant positive acceleration of the movable core in the dynamic process by taking only the constant force margin as the control target, which ensures the reliable action of the contactor and controls the total kinetic energy of the movable core to control the impact energy and inhibit the contact bounces. Therefore, the direct electromagnetic force closed loop can more accurately and directly realize the dynamic matching of the electromagnetic force and reaction force, which is of great significance to the optimization control of the contactor dynamic process.
Keyword ：
Closed-loop control Closed-loop control contactor contactor Couplings Couplings Dynamics Dynamics electromagnetic force observer electromagnetic force observer Electromagnetic forces Electromagnetic forces Electromagnetics Electromagnetics Force Force Mathematical models Mathematical models neural network neural network spring reaction force spring reaction force Springs Springs
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| GB/T 7714 | Tang, Longfei , Chen, Wei , Xu, Zhihong . A Direct Electromagnetic Force Closed-Loop Control Strategy for a Contactor [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2023 , 70 (2) : 1740-1750 . |
| MLA | Tang, Longfei et al. "A Direct Electromagnetic Force Closed-Loop Control Strategy for a Contactor" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 70 . 2 (2023) : 1740-1750 . |
| APA | Tang, Longfei , Chen, Wei , Xu, Zhihong . A Direct Electromagnetic Force Closed-Loop Control Strategy for a Contactor . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2023 , 70 (2) , 1740-1750 . |
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