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学者姓名：陈孝莺
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为提升宽电压增益下电动汽车的充电效率,提出了通过重构变压器匝比提升宽电压增益双有源桥(DAB)变换器传输效率的新兴实验技术.首先,介绍了 DAB 变换器的特点并分析了其在宽电压增益条件下存在的不足,提出了重构 DAB 变换器的变压器匝比的实验思路,并分析了其可行性.其次,提出了分别采用双变压器和多绕组变压器重构变压器匝比的两种电路拓扑,并设计了相应的控制方法和实验平台.最后,实验结果验证了所提技术的有效性,能够加深学生对于宽电压增益电动汽车充电技术的认识,扩展学生在电力电子学科的实验创新思维.
Keyword ：
双有源桥变换器 双有源桥变换器 宽电压增益 宽电压增益 电动汽车充电 电动汽车充电 重构变压器匝比 重构变压器匝比
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| GB/T 7714 | 张艺明 , 谢鸿彪 , 张韬 et al. 可重构变压器匝比的宽电压增益DAB变换器实验技术 [J]. | 实验技术与管理 , 2025 , 42 (3) : 28-36 . |
| MLA | 张艺明 et al. "可重构变压器匝比的宽电压增益DAB变换器实验技术" . | 实验技术与管理 42 . 3 (2025) : 28-36 . |
| APA | 张艺明 , 谢鸿彪 , 张韬 , 陈孝莺 , 程翔鹏 . 可重构变压器匝比的宽电压增益DAB变换器实验技术 . | 实验技术与管理 , 2025 , 42 (3) , 28-36 . |
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For automated guided vehicles (AGVs), the charging current is generally high to shorten the charging time. To achieve a high-current output, parallel connections are often chosen to distribute the current evenly across multiple coils or systems. This letter proposes a high-current output method based on intertwined receiving coils and split compensation capacitors. The receiving coil is split into four intertwined coils. They are arranged in such a way that the four coils are symmetrical to each other even with offset. Meanwhile, part or all of the compensating capacitors on the receiving side can also be split into four branches, connecting to the corresponding four receiving coils. It is proved that for the coil structure proposed when the whole compensating capacitors are split into four branches, the current difference of the four coils is the smallest. An experimental prototype is implemented. The experimental results show that the proposed method can achieve good current balancing performance of the four receiving coils even under the conditions of load change and coil position offset.
Keyword ：
Capacitors Capacitors Coils Coils Couplings Couplings Current sharing Current sharing Equivalent circuits Equivalent circuits high-current output high-current output Impedance Impedance Inductance Inductance Inductors Inductors intertwined coil intertwined coil Resonance Resonance split compensating capacitors split compensating capacitors Topology Topology Voltage Voltage wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Zhang, Yiming , Ouyang, Hongjing , Zhang, Tao et al. High-Current Output for AGV Wireless Charging System With Intertwined Receiving Coils and Split Compensating Capacitors [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (7) : 8923-8927 . |
| MLA | Zhang, Yiming et al. "High-Current Output for AGV Wireless Charging System With Intertwined Receiving Coils and Split Compensating Capacitors" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 40 . 7 (2025) : 8923-8927 . |
| APA | Zhang, Yiming , Ouyang, Hongjing , Zhang, Tao , Xie, Ronghuan , Chen, Xiaoying , Cheng, Xiangpeng et al. High-Current Output for AGV Wireless Charging System With Intertwined Receiving Coils and Split Compensating Capacitors . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (7) , 8923-8927 . |
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With the development of electric vehicles (EVs), there are two rated voltage levels for lithium-ion batteries, namely 400 and 800 V. Given the interoperability performance of public wireless power transfer (WPT) facilities, EV WPT systems should efficiently transmit power for both battery options. In this letter, a method is proposed by combining the coupling structure with a reconfigurable inductor-capacitor-capacitor (LCC) compensation network to enable charging EVs with the nominal battery voltage (NBV) of 400 or 800 V at the same power level, while maintaining high efficiency. The secondary LCC compensation is reconfigured so that the equivalent compensating inductance is varied. The mathematical model is established. The downscaled experimental prototype achieves a dc-dc efficiency of 95.34 and 92.40% for the output voltages of 200 and 400 V at the power level of 1.5 kW, respectively. The feasibility of the proposed system has been verified under the condition of alignment and misalignment of two sets of coupling coils.
Keyword ：
Batteries Batteries Coils Coils Control systems Control systems Couplings Couplings Electric vehicles (EVs) Electric vehicles (EVs) Electrons Electrons Inductance Inductance interoperability interoperability nominal battery voltage (NBV) nominal battery voltage (NBV) Prototypes Prototypes Switches Switches Topology Topology Wireless power transfer Wireless power transfer wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Liu, Chao , Zhou, Mingzhu , Xie, Ronghuan et al. An Interoperable Receiver With Reconfigurable LCC Compensation for Wireless Charging of 400-and 800-V Batteries in Electric Vehicles [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 , 72 (8) : 8710-8714 . |
| MLA | Liu, Chao et al. "An Interoperable Receiver With Reconfigurable LCC Compensation for Wireless Charging of 400-and 800-V Batteries in Electric Vehicles" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 72 . 8 (2025) : 8710-8714 . |
| APA | Liu, Chao , Zhou, Mingzhu , Xie, Ronghuan , Chen, Xiaoying , Mao, Xingkui , Zhang, Yiming . An Interoperable Receiver With Reconfigurable LCC Compensation for Wireless Charging of 400-and 800-V Batteries in Electric Vehicles . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2025 , 72 (8) , 8710-8714 . |
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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 . |
| 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 (2025) . |
| 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 . |
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In wireless charging for consumer electronics, enhancing misalignment tolerance ability can improve user experience. To achieve this goal, this paper proposes a novel dual-frequency hybrid wireless charging system, which combines the series-series (S-S) and double-sided inductor capacitor capacitor (LCC-LCC) topologies at two different frequencies. The S-S and LCC-LCC topologies have opposite trends against misalignment and combining them can help achieve misalignment-tolerance characteristics. The S and LCC compensations are paralleled at the primary side and integrated at the secondary side. Thus, there are two transmitting coils, which are stacked for cross-coupling elimination, and only one receiving coil to reduce the size and weight of consumer electronics. The mathematical models are built and the misalignment tolerance mechanism is analyzed. The magnetic coupler and the design flow chart are presented. Finally, an experimental prototype is established to verify the feasibility of the proposed system. Both the misalignment-tolerance performance and the constant-current (CC) output are tested. The experimental results are well aligned with calculated ones, indicating that the proposed scheme has good misalignment tolerance performance and CC output, which is suitable for mobile desktop charging. © 2025 IEEE.
Keyword ：
consumer electronics consumer electronics dual-frequency dual-frequency integrated integrated misalignment tolerance misalignment tolerance wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Xie, R. , Yu, X. , Liu, Q. et al. A Dual-Frequency Hybrid Wireless Charging System with Anti-Offset Integrated Receiver for Mobile Desktop Charging [J]. | IEEE Transactions on Consumer Electronics , 2025 , 71 (1) : 571-578 . |
| MLA | Xie, R. et al. "A Dual-Frequency Hybrid Wireless Charging System with Anti-Offset Integrated Receiver for Mobile Desktop Charging" . | IEEE Transactions on Consumer Electronics 71 . 1 (2025) : 571-578 . |
| APA | Xie, R. , Yu, X. , Liu, Q. , Chen, X. , Mao, X. , Cheng, X. et al. A Dual-Frequency Hybrid Wireless Charging System with Anti-Offset Integrated Receiver for Mobile Desktop Charging . | IEEE Transactions on Consumer Electronics , 2025 , 71 (1) , 571-578 . |
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Dynamic wireless power transmission (DWPT) is a promising technology as it reduces the battery capacity carried by automated guided vehicles and lowers its cost and weight. However, there are large mutual inductance and power fluctuation in the dynamic charging process. In order to solve this problem, this letter proposes a low-cost and low-fluctuation dual-receiver magnetic coupler, which is connected in parallel by two half-bridge rectifiers. The transmitter employs an I-type solenoid coil to enhance the magnetic field and improve the coupling. The optimized design of the coupler structure enables the system to have smooth mutual inductance fluctuation by switching the two receiving coils with each other during the dynamic charging process. The experimental results show that the measured equivalent mutual inductance fluctuation is 3.6%, which verifies the feasibility of the optimized design of the magnetic coupling structure and the effectiveness of the proposed DWPT system.
Keyword ：
Automated guided vehicles (AGVs) Automated guided vehicles (AGVs) dual receiver (Rx) dual receiver (Rx) dynamic wireless power transfer (DWPT) dynamic wireless power transfer (DWPT) smooth mutual inductance fluctuation smooth mutual inductance fluctuation
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| GB/T 7714 | Zhang, Yiming , Zhou, Hangyan , Xie, Ronghuan et al. A Smooth-Output Dynamic Wireless Charging System for Automated Guided Vehicles With Dual-Receiver Magnetic Coupler [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (4) : 4711-4715 . |
| MLA | Zhang, Yiming et al. "A Smooth-Output Dynamic Wireless Charging System for Automated Guided Vehicles With Dual-Receiver Magnetic Coupler" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 40 . 4 (2025) : 4711-4715 . |
| APA | Zhang, Yiming , Zhou, Hangyan , Xie, Ronghuan , Mao, Xingkui , Chen, Xiaoying , Li, Zhongqi . A Smooth-Output Dynamic Wireless Charging System for Automated Guided Vehicles With Dual-Receiver Magnetic Coupler . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (4) , 4711-4715 . |
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In the application process of wireless charging for electric vehicles, foreign object detection (FOD) is one of the necessary measures to address safety issues. This letter proposes a self-resonant FOD method for metal object (MO) and living object (LO) detection. It is possible to detect an MO and an LO without being affected by the 85-kHz power transmission, without the need for a detection coil specifically designed to decouple from the power transmission coil and a high-pass filter. Each self-resonant detection coil consists of a unipolar coil and a comb-shaped capacitor plate. This letter describes a method that can identify an MO and an LO by scanning frequencies within a small range and detecting the slope of the output voltage as it changes with frequency. When there are no foreign objects, the absolute value of the output voltage slope is less than 0.15. The voltage slope less than -0.15 indicates the presence of MOs, while a slope greater than 0.15 indicates the presence of an LO. To verify the feasibility of the proposed method, an experimental prototype has been constructed.
Keyword ：
Capacitance Capacitance Capacitors Capacitors Coils Coils Copper Copper Electric vehicles (EVs) Electric vehicles (EVs) foreign object detection (FOD) foreign object detection (FOD) Image edge detection Image edge detection Inductive charging Inductive charging Object detection Object detection Resistance Resistance Resonant frequency Resonant frequency self-resonant self-resonant Steel Steel wireless charging wireless charging
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| GB/T 7714 | Zheng, Yingyao , Zhou, Yicheng , Xie, Ronghuan et al. A Self-Resonant Foreign Object Detection System for Metal and Living Object Detection in Electric Vehicle Wireless Charging Systems [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (5) : 6459-6463 . |
| MLA | Zheng, Yingyao et al. "A Self-Resonant Foreign Object Detection System for Metal and Living Object Detection in Electric Vehicle Wireless Charging Systems" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 40 . 5 (2025) : 6459-6463 . |
| APA | Zheng, Yingyao , Zhou, Yicheng , Xie, Ronghuan , Mao, Xingkui , Chen, Xiaoying , Cheng, Xiangpeng et al. A Self-Resonant Foreign Object Detection System for Metal and Living Object Detection in Electric Vehicle Wireless Charging Systems . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (5) , 6459-6463 . |
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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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In wireless power transfer (WPT) systems for electric vehicles (EVs), interoperability and misalignment tolerance for different receiving charging terminals meet great demands. In this article, a hybrid topology with a vector synthesis strategy and highly integrated magnetic couplers are proposed to achieve misalignment tolerance and interoperability for unipolar (Q), bipolar (DD), and quadrupolar (QUA) coils over the X and Y misalignments. By adjusting the phase angles of the four half-bridge inverters under different misalignments, the output voltage fluctuation can be limited. The mathematical model of the proposed hybrid topology is established and the vector synthesis strategy is introduced. The magnetic couplers and the design principle are presented. A 2-kW prototype is built to verify the proposed system. The experimental results demonstrate that the output voltage fluctuation under misalignments is less than 3.1% for the Rx Q coil, 3.3% for the Rx DD coil, and 4.3% for the Rx QUA coil, and the peak efficiency is 89.3%.
Keyword ：
Coils Coils Couplers Couplers Couplings Couplings Ferrites Ferrites Fluctuations Fluctuations Highly integrated magnetic couplers Highly integrated magnetic couplers hybrid topology hybrid topology Inductors Inductors interoperability interoperability Inverters Inverters misalignment tolerance misalignment tolerance Topology Topology Vectors Vectors vector synthesis strategy vector synthesis strategy wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Zhang, Yiming , Huang, Zhongjin , Shen, Zhiwei et al. Interoperability and Misalignment Tolerance of Electric Vehicle Wireless Charging System Based on Multiple Self-Decoupled Transmitting Coils and Vector Synthesis Strategy [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (5) : 7512-7522 . |
| MLA | Zhang, Yiming et al. "Interoperability and Misalignment Tolerance of Electric Vehicle Wireless Charging System Based on Multiple Self-Decoupled Transmitting Coils and Vector Synthesis Strategy" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 40 . 5 (2025) : 7512-7522 . |
| APA | Zhang, Yiming , Huang, Zhongjin , Shen, Zhiwei , Xie, Ronghuan , Chen, Xiaoying , Mao, Xingkui . Interoperability and Misalignment Tolerance of Electric Vehicle Wireless Charging System Based on Multiple Self-Decoupled Transmitting Coils and Vector Synthesis Strategy . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2025 , 40 (5) , 7512-7522 . |
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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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