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学者姓名：陈为
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Abstract ：
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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Abstract ：
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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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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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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Abstract ：
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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Abstract ：
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 . |
| MLA | Fu, Kaining et al. "Integrated filtering choke for SMPS with enhanced EMI noise suppression performance" . | JOURNAL OF POWER ELECTRONICS (2024) . |
| APA | Fu, Kaining , Qiu, Zhiyong , Chen, Wei . Integrated filtering choke for SMPS with enhanced EMI noise suppression performance . | JOURNAL OF POWER ELECTRONICS , 2024 . |
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Abstract ：
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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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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Abstract ：
Wireless power transfer is widely used due to its safety and convenience. The rectification circuit is an important part of the WPT system. Different rectification circuits and input parameters may lead to different responses and output gains in the actual applications. Usually, the fundamental harmonic analysis method is adopted to analyze the WPT system's performance. However, this method cannot present the differences between different parameter applications. It is because only the fundamental harmonic is taken into consideration. In this paper, the influence of harmonics is studied. Moreover, the equivalent impedance model of the rectification circuits is built. It can take the input and rectification circuit parameters into consideration, which is quite different from the traditional method. Based on the equivalent impedance model of the rectification circuits, the response model of the WPT system can be analyzed. Finally, a WPT system is used for the validation. The key waveforms calculation results are almost the same as the measured results. It verifies the proposed method to be correct and useful. It provides a good basis for WPT system optimization. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
Keyword ：
Fundamental harmonic analysis Fundamental harmonic analysis Rectification circuit Rectification circuit Wireless power transfer Wireless power transfer
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| GB/T 7714 | Xie, B. , Wang, J. , Lu, Z. et al. Analysis and Modeling of Response Characteristics Under Actual Rectifier Parameters in the Wireless Power Transfer System [未知]. |
| MLA | Xie, B. et al. "Analysis and Modeling of Response Characteristics Under Actual Rectifier Parameters in the Wireless Power Transfer System" [未知]. |
| APA | Xie, B. , Wang, J. , Lu, Z. , Chen, W. , Chen, Q. . Analysis and Modeling of Response Characteristics Under Actual Rectifier Parameters in the Wireless Power Transfer System [未知]. |
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Abstract ：
As an important part of the magnetic resonant wireless power transfer technology, the rectifier circuit plays a key role. The quality of its performance will directly affect the transmission efficiency of the WPT system. This paper proposes the full-bridge and voltage-doubler rectifier loss calculation models combined with the circuit structures and operating principle. On this basis, it reveals that the voltage-doubler rectifier circuit can greatly reduce the loss and improve the overall efficiency of the WPT system in the case of high voltage and low current, and the optimized effect will be greater as the decreasing of equivalent resistance ESR of the filter capacitor. Experimental results show that the efficiency of the WPT system based on the voltage-doubler rectifier structure can be increased by 2% compared to the traditional method, and the optimized efficiency of the WPT system is 93% at rated operating conditions, which verifies the theory analysis to be correct and flexible. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
Keyword ：
Efficiency optimization Efficiency optimization Loss modeling Loss modeling Voltage-doubler rectifier circuit Voltage-doubler rectifier circuit Wireless power transfer Wireless power transfer
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| GB/T 7714 | Zhang, X. , Chen, Q. , Chen, W. . Loss Analysis of Rectifier Circuit and Its Optimization Technique in Wireless Power Transfer System [未知]. |
| MLA | Zhang, X. et al. "Loss Analysis of Rectifier Circuit and Its Optimization Technique in Wireless Power Transfer System" [未知]. |
| APA | Zhang, X. , Chen, Q. , Chen, W. . Loss Analysis of Rectifier Circuit and Its Optimization Technique in Wireless Power Transfer System [未知]. |
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