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学者姓名：毛行奎
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Abstract ：
三相交错LLC谐振变换器在大功率场合能够有效降低单相电流应力，并通过交错并联技术减小输出纹波，缩减输出滤波电容体积，进一步提升功率密度。构建三相交错LLC谐振变换器电路数学模型，对关键参数进行设计，并运用等效电路模型展开理论分析；同时考虑磁性元件的散热优化问题，以保障变换器在高温环境下可靠运行。最后，设计并搭建1台60 kW的三相交错LLC谐振变换器样机。通过实验测试，验证了所提方案的有效性，为LLC谐振变换器在大功率应用中的设计与优化提供了参考。
Keyword ：
LLC谐振变换器 LLC谐振变换器 交错并联 交错并联 参数设计 参数设计 大功率应用 大功率应用
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| GB/T 7714 | 黄菊 , 姚泽鹏 , 周俊辉 et al. 大功率直流充电模块设计 [J]. | 电器与能效管理技术 , 2025 , PageCount-页数: 9 (05) : 43-51 . |
| MLA | 黄菊 et al. "大功率直流充电模块设计" . | 电器与能效管理技术 PageCount-页数: 9 . 05 (2025) : 43-51 . |
| APA | 黄菊 , 姚泽鹏 , 周俊辉 , 郑宗华 , 毛行奎 . 大功率直流充电模块设计 . | 电器与能效管理技术 , 2025 , PageCount-页数: 9 (05) , 43-51 . |
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The interleaved parallel technique and magnetic integration technique can effectively improve power density of high-current LLC resonant converter. However, its common-mode (CM) noise mechanism and suppression are complicated due to the integration of multiple transformers (IMTs) sharing one common core in the interleaved multiplexing. The CM noise mechanism of the IMTs is analyzed, and the structural capacitance model and common-mode noise model of the IMTs are established. The model reveals that there exists electric field coupling between the any two windings through the common core of the IMTs. Then the CM noise propagation mechanism of interleaved LLC resonant converter with IMTs is investigated, and the simplified CM noise model of the IMTs is further developed. Based on the simplified model, the two suppression methods of the optimal balance capacitance, and the grounding both of shielding layer and transformer magnetic core are proposed. The experiments in a 3 kW high power density server power supply shows that the proposed suppression methods mitigate CM noise more effectively, and can reduce the CM inductor volume greatly, while loss improvement can be negligible. The experiments validates the IMTs noise mechanism, CM noise model, the simplified model, and the proposed suppression methods. The research will be beneficial to develop high power density and high current AI server power supply. © IEEE. 1982-2012 IEEE.
Keyword ：
Balance capacitance technique Balance capacitance technique CM noise model CM noise model integrated magnetic transformer integrated magnetic transformer interleaved parallel technique interleaved parallel technique LLC resonant converter LLC resonant converter
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| GB/T 7714 | Zhang, W. , Cui, W. , Huang, J. et al. Mechanism Analysis, Modeling and Suppression of Common-Mode Interference of Interleaved LLC Resonant Converter With Integrated Magnetics [J]. | IEEE Transactions on Industrial Electronics , 2025 . |
| MLA | Zhang, W. et al. "Mechanism Analysis, Modeling and Suppression of Common-Mode Interference of Interleaved LLC Resonant Converter With Integrated Magnetics" . | IEEE Transactions on Industrial Electronics (2025) . |
| APA | Zhang, W. , Cui, W. , Huang, J. , Mao, X. , Zhang, Y. , Dong, J. . Mechanism Analysis, Modeling and Suppression of Common-Mode Interference of Interleaved LLC Resonant Converter With Integrated Magnetics . | IEEE Transactions on Industrial Electronics , 2025 . |
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With the development of electric vehicles (EVs), lithium-ion batteries have two rated voltages: 400 and 800 V, and are suitable for different output power scenarios. Considering the interoperability of public wireless power transfer (WPT) facilities, the WPT system for EVs not only needs to be compatible with the battery voltage class (BVC) under the premise of meeting the corresponding output power level, but also needs to take into account different coupling structures, namely unipolar (Q) and bipolar (DD) coils. Under the background of the interoperability of the above-mentioned BVC and coupling structures, an integrated dual-decoupled transmitter is proposed. First, finite element analysis and optimization were carried out for the proposed coupling structure. While obtaining the optimal coil parameters, the interoperability performance with Q and DD coils was also achieved. Then, by combining circuit topology, four different output modes can be achieved, which are used to adapt to the BVCs under different power levels and different coupling structures. A downscaled experimental prototype with the power of 5.0-kW was established. Under the premise of 200 V input voltage, the efficient transmission of 200 and 400 V output of Q and DD coil was achieved. The dc-dc efficiency is greater than 91%. Finally, on the premise of meeting the interoperability of Q and DD coils, the proposed structure also has a certain degree of antimisalignment characteristics.
Keyword ：
Automobiles Automobiles Batteries Batteries Battery voltage class (BVC) Battery voltage class (BVC) Coils Coils Couplings Couplings electric vehicles (EVs) electric vehicles (EVs) interoperability interoperability Interoperability Interoperability Magnetic fields Magnetic fields Switches Switches Topology Topology Vectors Vectors Voltage Voltage wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Liu, Chao , Zhou, Mingzhu , Zhuang, Yizhan et al. Integrated Dual-Decoupled Transmitter With Battery Voltage Interoperability for Wireless Charging of EVs [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 . |
| MLA | Liu, Chao et al. "Integrated Dual-Decoupled Transmitter With Battery Voltage Interoperability for Wireless Charging of EVs" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2025) . |
| APA | Liu, Chao , Zhou, Mingzhu , Zhuang, Yizhan , Cheng, Xiangpeng , Mao, Xingkui , Zhang, Yiming . Integrated Dual-Decoupled Transmitter With Battery Voltage Interoperability for Wireless Charging of EVs . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 . |
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针对现有混合式L-LLC谐振变换器同步整流(SR)驱动方案中存在检测电路复杂、抗干扰性弱,特别是在大电流采样时SR驱动信号易受高频噪声干扰导致占空比丢失的问题,本文提出一种无需硬件采样开关管高频电流的数字控制SR驱动方案.首先,通过改进时域分析法,考虑了低压侧整流电流断续时间内谐振电流呈线性变化,求解出时域方程的解析解.然后,建立SR管导通时间与输出电流和开关频率的数学模型,并将其应用于嵌入式控制器.控制器根据输出电流和开关频率的变化,实时得到SR管的驱动信号,不受高频噪声的影响,抗干扰性强,硬件数量少,有效降低了采样损耗.最后,搭建了一台10 kW双向全桥L-LLC谐振变换器实验样机,在混合控制模式下SR管导通时间误差最大为6.78%,峰值效率为96.51%,比传统SR驱动方案提高0.23%,验证了所提数字SR驱动方案的正确性和有效性.
Keyword ：
同步整流 同步整流 时域分析 时域分析 谐振变换器 谐振变换器
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| GB/T 7714 | 张树炜 , 李堂 , 张彬意 et al. 混合式L-LLC谐振变换器数字同步整流控制策略研究 [J]. | 电力电子技术 , 2025 , 59 (7) : 15-24 . |
| MLA | 张树炜 et al. "混合式L-LLC谐振变换器数字同步整流控制策略研究" . | 电力电子技术 59 . 7 (2025) : 15-24 . |
| APA | 张树炜 , 李堂 , 张彬意 , 毛行奎 . 混合式L-LLC谐振变换器数字同步整流控制策略研究 . | 电力电子技术 , 2025 , 59 (7) , 15-24 . |
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The power supply issue for electrical devices in harsh and dangerous environments is challenging. This letter proposes a power supply solution using drones as an energy carrier to charge such devices. The drone is wirelessly charged at the ground-side station and then flies to the target place to charge the devices wirelessly. To achieve a compact and lightweight structure, the helical coupler is designed without compensation components and ferrite on the drone side. Thus, a drone-side uncompensated bidirectional wireless charging system is formed. Compensation capacitors and inductors are employed on the ground side to achieve zero phase angle. The antioffset performance and the constant-voltage output characteristic of the system are investigated. The experimental results verified that the proposed approach can be a competitive solution for charging devices in inaccessible places.
Keyword ：
Bidirectional Bidirectional Capacitors Capacitors Coils Coils compact compact constant voltage (CV) constant voltage (CV) Couplers Couplers Device-to-device communication Device-to-device communication drone drone Drones Drones Ferrites Ferrites Inductance Inductance Topology Topology Voltage Voltage Windings Windings wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Zhang, Yiming , Yu, Xingpeng , Chen, Yi et al. A Lightweight Bidirectional Wireless Energy Carrier Without Drone-Side Compensation and Ferrite for Devices in Inaccessible Places [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 . |
| MLA | Zhang, Yiming et al. "A Lightweight Bidirectional Wireless Energy Carrier Without Drone-Side Compensation and Ferrite for Devices in Inaccessible Places" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2025) . |
| APA | Zhang, Yiming , Yu, Xingpeng , Chen, Yi , Liu, Qiliang , Rao, Peiyao , Zhuang, Yizhan et al. A Lightweight Bidirectional Wireless Energy Carrier Without Drone-Side Compensation and Ferrite for Devices in Inaccessible Places . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 . |
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To improve the efficiency of isolated bidirectional dc-dc converters for off-board dc charging over a wide voltage gain, such as dual active bridge (DAB) and inductor-inductor-capacitor (LLC) resonant converters, this article proposes an approach to reconfiguring transformer turn ratio using multibridge-legs (RTTMBL). The proposed RTTMBL approach reconfigures a large number of turn-ratio combinations by adding a few auxiliary components. The different combinations of turn ratio are selected for different operating conditions to match the primary and secondary voltages of the converter, obtaining a lower inductor rms current and a wider zero-voltage switching (ZVS) range, thus reducing conduction and switching loss. This article first analyzes the principle of the proposed approach and describes the application of RTTMBL on DAB (DAB-RTTMBL) converter. Second, the DAB-RTTMBL is compared with the existing solutions regarding inductor rms current and ZVS range. Finally, a DAB-RTTMBL converter prototype with a power of 1kW and a voltage gain varying from 0.4 to 2.5 is built to verify the effectiveness of RTTMBL, which has six turn-ratio combinations. The results demonstrate the great potential of the proposed RTTMBL for wide-voltage-gain applications.
Keyword ：
Batteries Batteries Bridge circuits Bridge circuits Dual active bridge (DAB) Dual active bridge (DAB) Inductors Inductors Legged locomotion Legged locomotion LLC LLC reconfigurable transformer turns ratio reconfigurable transformer turns ratio Resonant converters Resonant converters Switches Switches Topology Topology Transformers Transformers wide voltage range wide voltage range Windings Windings Zero voltage switching Zero voltage switching
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| GB/T 7714 | Xie, Hongbiao , Zhang, Tao , Rao, Peiyao et al. An Approach to Reconfiguring Transformer Turn Ratio Using Multibridge-Legs for Wide-Voltage-Gain DAB and LLC Converters [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 , 72 (9) : 9172-9183 . |
| MLA | Xie, Hongbiao et al. "An Approach to Reconfiguring Transformer Turn Ratio Using Multibridge-Legs for Wide-Voltage-Gain DAB and LLC Converters" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 72 . 9 (2025) : 9172-9183 . |
| APA | Xie, Hongbiao , Zhang, Tao , Rao, Peiyao , Xie, Ronghuan , Chen, Xiaoying , Mao, Xingkui et al. An Approach to Reconfiguring Transformer Turn Ratio Using Multibridge-Legs for Wide-Voltage-Gain DAB and LLC Converters . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 , 72 (9) , 9172-9183 . |
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In the medium- and high-capacity power applications, typically multiple switches connected in series and parallel are used in power electronic converters to handle high voltages and currents. Powering the driving circuits and auxiliary units with high insulation requirements is challenging. This article proposes a modular multioutput wireless power transfer system with constant-current (CC) output characteristics for auxiliary power supply. Compared with conventional solutions, there is no need for complex control circuits and much magnetic material. The dual-frequency topology with CC outputs is derived by applying the analytical method that used to obtain the dual-frequency topology with constant-voltage (CV) outputs. The conditions for the system to maintain zero phase angle at different frequencies are discussed. Lower output fluctuations than single-frequency multioutput systems and dual-frequency CV output systems are verified. A magnetic coupler with integrated compensation inductors is designed to eliminate the need for discrete inductors and improve the power density. An experimental prototype is built to verify the validity of the theory. The WPT system achieves an output current fluctuation of no more than 4.78%, a maximum system efficiency higher than 85%, and an output power of more than 10 W at a single port, which can well meet the requirements of auxiliary power supply.
Keyword ：
Auxiliary power supply (APS) Auxiliary power supply (APS) Capacitors Capacitors Circuits Circuits Coils Coils constant-current (CC) constant-current (CC) dual frequency dual frequency Equivalent circuits Equivalent circuits Inductors Inductors Insulation Insulation modularity modularity Power supplies Power supplies Rectifiers Rectifiers Resonant frequency Resonant frequency Topology Topology wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Pan, Wenxuan , Liu, Rongbin , Xie, Ronghuan et al. A Multi-Output Modular Wireless Power Transfer System With Constant-Current Characteristic [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (4) : 6272-6281 . |
| MLA | Pan, Wenxuan et al. "A Multi-Output Modular Wireless Power Transfer System With Constant-Current Characteristic" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 40 . 4 (2025) : 6272-6281 . |
| APA | Pan, Wenxuan , Liu, Rongbin , Xie, Ronghuan , Zhuang, Yizhan , Mao, Xingkui , Zhang, Yiming . A Multi-Output Modular Wireless Power Transfer System With Constant-Current Characteristic . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (4) , 6272-6281 . |
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A Y-source coupled inductor-based high voltage gain dc-dc converter with zero input current ripple (ZICR) is proposed in this article. ZICR is achieved by adding an auxiliary circuit which is composed of an inductor, a capacitor, and a coupled inductor in series. The presence of the capacitor results in an average zero current passing through the ZICR structure. Therefore, a small size magnetic core can be used to design the inductor, which can reduce the volume and copper loss of the magnetic components. In addition, a Y-source coupled inductor along with a voltage multiplier is used to achieve high voltage. The inherent passive clamp circuit effectively restricts the off-voltage spike and voltage stress across the switch. By utilizing capacitors to absorb the leakage energy, zero current switching (ZCS) turn-off of all diodes is achieved and mitigates the reverse-recovery issues of the converter. A 200 W 32-380 V 50 kHz experimental prototype is built to verify the feasibility of this converter. Within the output power range of 40-200 W, the efficiency of the prototype with the ZICR structure is higher than that without this structure. The maximum efficiency of the converter with the ZICR structure and without it are 95.9% and 95.6%, respectively.
Keyword ：
DC-DC converter DC-DC converter high voltage gain high voltage gain Y-source coupled inductor Y-source coupled inductor zero input current ripple (ZICR) zero input current ripple (ZICR)
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| GB/T 7714 | Xu, Yuzhen , Zhang, Yueling , Zhou, Mingzhu et al. Y-Source Coupled Inductor Based High Voltage Gain DC-DC Converter With Zero Input Current Ripple [J]. | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2025 , 13 (1) : 199-213 . |
| MLA | Xu, Yuzhen et al. "Y-Source Coupled Inductor Based High Voltage Gain DC-DC Converter With Zero Input Current Ripple" . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS 13 . 1 (2025) : 199-213 . |
| APA | Xu, Yuzhen , Zhang, Yueling , Zhou, Mingzhu , Xie, Ronghuan , Mao, Xingkui , Chen, Xiaoying et al. Y-Source Coupled Inductor Based High Voltage Gain DC-DC Converter With Zero Input Current Ripple . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2025 , 13 (1) , 199-213 . |
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A common and urgent problem in electric vehicle (EV) wireless charging technology is the accidental entry of metal objects (MOs) into the charging area where there is no direct physical contact. Eddy currents can be induced in the MOs, generating a large amount of heat and potentially leading to serious consequences such as fire. The current commercially applied MO detection (MOD) technology has the problems of low detection sensitivity, affecting the power transmission magnetic field, and the existence of blind zones. In view of these shortcomings, a MOD system for wireless charging of EVs is proposed in this article. Long strip detection coils are designed and placed above the transmitter coil. Each strip detection coil is composed of 16 unipolar coils having alternating polarities, which can realize decoupling between the detection coil and the transmitter coil and eliminate the interference to the magnetic field of the wireless power transmission system. A third-order Sallen-Key high pass filter and a proportional amplifier circuit are used to improve the sensitivity and accuracy of MOD. Finally, an experimental platform of MOD for EV wireless charging is built, and the proposed system can detect the existence of MOs sensitively and accurately at the location where they may exist.
Keyword ：
Coils Coils Detection coil Detection coil electric vehicle (EV) electric vehicle (EV) Electrification Electrification inductance change inductance change metal object detection (MOD) metal object detection (MOD) Metals Metals Strips Strips Transportation Transportation Wireless communication Wireless communication wireless power transfer (WPT) wireless power transfer (WPT) Wireless sensor networks Wireless sensor networks
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| GB/T 7714 | Wang, Hui , Zheng, Yingyao , Zhou, Yicheng et al. Blind-Zone-Free Metal Object Detection System for Wireless EV Charging System Employing Strip Multipolar Detection Coils [J]. | IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION , 2025 , 11 (1) : 4420-4428 . |
| MLA | Wang, Hui et al. "Blind-Zone-Free Metal Object Detection System for Wireless EV Charging System Employing Strip Multipolar Detection Coils" . | IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION 11 . 1 (2025) : 4420-4428 . |
| APA | Wang, Hui , Zheng, Yingyao , Zhou, Yicheng , Wu, Yuanchao , Pan, Wenbin , Shen, Zhiwei et al. Blind-Zone-Free Metal Object Detection System for Wireless EV Charging System Employing Strip Multipolar Detection Coils . | IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION , 2025 , 11 (1) , 4420-4428 . |
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There are constant-current (CC) and constant-voltage (CV) charging or multistage CC charging with different CC or CV levels for different electric vehicles. Accommodating multiple output levels is challenging for a wireless power transfer (WPT) system. In addition, maintaining high efficiency and output stability during misalignment is required for practical applications. To meet the above requirements, dual-channel WPT systems with reconfigurable series-parallel switchers (RSPS) are proposed in this article. With the RSPS connected to both input and output ports of two power channels, the range of CV or CC output can be lifted to fourfold. The proposed systems are compatible with full-bridge and half-bridge switching that provides more output levels. Strong misalignment tolerance is achieved by the hybrid topologies. An experimental prototype is established to verify the proposed WPT systems. The results have revealed that the proposed systems can provide a wide CV or CC output range and maintain output stability with efficiency up to 93.3% under a misalignment distance from 0 to 100 mm.
Keyword ：
Coils Coils Constant current (CC) Constant current (CC) constant-voltage (CV) constant-voltage (CV) hybrid topology hybrid topology Inductance Inductance inductive power transfer (IPT) inductive power transfer (IPT) Inverters Inverters misalignment tolerance misalignment tolerance Receivers Receivers Switches Switches Topology Topology Transformers Transformers Voltage Voltage Voltage control Voltage control wide-range output wide-range output Wireless power transfer Wireless power transfer wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Zhang, Yiming , Zhou, Yicheng , Zheng, Yingyao et al. Dual-Channel Wireless Power Transfer Systems With Reconfigurable Series-Parallel Switchers on Both Input and Output Ports for Wide Constant-Voltage or Constant-Current Range and Misalignment Tolerance [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 , 72 (8) : 7974-7982 . |
| MLA | Zhang, Yiming et al. "Dual-Channel Wireless Power Transfer Systems With Reconfigurable Series-Parallel Switchers on Both Input and Output Ports for Wide Constant-Voltage or Constant-Current Range and Misalignment Tolerance" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 72 . 8 (2025) : 7974-7982 . |
| APA | Zhang, Yiming , Zhou, Yicheng , Zheng, Yingyao , Xie, Ronghuan , Chen, Xiaoying , Mao, Xingkui . Dual-Channel Wireless Power Transfer Systems With Reconfigurable Series-Parallel Switchers on Both Input and Output Ports for Wide Constant-Voltage or Constant-Current Range and Misalignment Tolerance . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 , 72 (8) , 7974-7982 . |
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