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学者姓名：张艺明
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In the architecture of point-of-load power supply in data center power system, 48V bus is gradually replacing 12V bus due to its lower conduction loss, and the 48V-1V single-stage high current high step-down converter has become a promising candidate for the third power stage. This paper compares the characteristics of single-stage multi-phase parallel and multi-element stacked structures in improving voltage step-down ratio and current carrying capacity. A fully interleaved stacked-half-bridge structure is proposed. The influence of the number of stacked elements on converter characteristics is discussed, and the optimal parameter configuration is found. Compared with the conventional solution, the proposed structure achieves a lower transformer turn ratio. Planar magnetic components are employed to reduce the height of the prototype, and a planar coupled inductor with five-leg core is proposed to achieve coupling of all output inductors. A 48V-1V/100A prototype was built, operating at 300kHz with a peak efficiency of 86.2%. © 2024 IEEE.
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| GB/T 7714 | Zhang, T. , Xie, H. , Xie, R. et al. A Fully-Interleaved Stacked-Half-Bridge Single-Stage 48V-1V Voltage Regulator [未知]. |
| MLA | Zhang, T. et al. "A Fully-Interleaved Stacked-Half-Bridge Single-Stage 48V-1V Voltage Regulator" [未知]. |
| APA | Zhang, T. , Xie, H. , Xie, R. , Zhou, Y. , Yu, X. , Zhang, Y. . A Fully-Interleaved Stacked-Half-Bridge Single-Stage 48V-1V Voltage Regulator [未知]. |
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To cope with different charging conditions, a hybrid wired and wireless vehicle-to-vehicle (V2V) charging system is proposed. The series-series (S-S) resonant topology is adopted for the wireless charging mode. It can be transformed into a bidirectional DC-DC converter for the wired charging mode. A simple circuit connection and switching pattern can achieve this target. Mathematical models of the two modes are developed and system configurations in the corresponding modes are explored. Two experimental prototypes are implemented to validate the proposal. Compared with the existing V2V systems, the proposed V2V system can be reconfigured into wired and wireless charging modes simply and cost-effectively, making it suitable for various charging conditions.
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| GB/T 7714 | Xie, Ronghuan , Liu, Qiliang , Chen, Yi et al. A simple integrated solution of reconfigurable wired and wireless Vehicle- to-Vehicle (V2V) charging system [J]. | WIRELESS POWER TRANSFER , 2024 , 11 . |
| MLA | Xie, Ronghuan et al. "A simple integrated solution of reconfigurable wired and wireless Vehicle- to-Vehicle (V2V) charging system" . | WIRELESS POWER TRANSFER 11 (2024) . |
| APA | Xie, Ronghuan , Liu, Qiliang , Chen, Yi , Shi, Jiajie , Yue, Jiaming , Lin, Gaoyu et al. A simple integrated solution of reconfigurable wired and wireless Vehicle- to-Vehicle (V2V) charging system . | WIRELESS POWER TRANSFER , 2024 , 11 . |
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Battery is a key component of Electric Vehicles (EVs), which has sparked a great demand for improvement in the EVs charging system. This paper proposes an integrated charging system for wireless power transfer (WPT), Onboard charger (OBC), and auxiliary power module (APM). The receiving coil on the secondary side can be weakly coupled with the transmitting coil of WPT and strongly coupled with the transmitting coil of OBC. Using a transformer on the receiving side to integrate the APM into the circuit. In this way, receiving coil, compensation network, and power electronics converter can be shared. The integrated structure can work in three working patterns. In the WPT mode and OBC mode, power grid delivers energy to the EV batteries, high-voltage (HV) batteries and low-voltage (LV) batteries can be charged at the same time. In the APM mode, HV batteries power LV batteries. In the traditional EV charger, WPT, OBC, and APM are three separate systems. This paper integrates three charging systems with the advantages of high-power density and cost effectiveness. The experimental results verify the proposal. © 2024 IEEE.
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| GB/T 7714 | Wu, Y. , Xie, R. , Xu, W. et al. An Integrated Charger of Wireless Power Transfer, Onboard Charger, and Auxiliary Power Module for Electric Vehicles [未知]. |
| MLA | Wu, Y. et al. "An Integrated Charger of Wireless Power Transfer, Onboard Charger, and Auxiliary Power Module for Electric Vehicles" [未知]. |
| APA | Wu, Y. , Xie, R. , Xu, W. , Pan, W. , Mao, X. , Zhang, Y. . An Integrated Charger of Wireless Power Transfer, Onboard Charger, and Auxiliary Power Module for Electric Vehicles [未知]. |
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This work proposes a triple phase-shift (TPS) control for a dual active bridge (DAB) DC-DC converter with reconfigurable transformer (RTDAB) to improve its efficiency over a wide voltage range. By optimizing the inductor rms current of the RTDAB under TPS control in different working modes, the proposed control method can achieve a lower rms current under a wide voltage range. The proposed control method is obtained on the basis of the traditional TPS control of DAB converter and does not require complicated mathematical processing. The control approach is easy to implement. Finally, simulation results on the MATLAB/Simulink platform demonstrate the efficiency of the suggested strategy. © 2024 IEEE.
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| GB/T 7714 | Xie, H. , Zhang, T. , Zhou, Y. et al. The Triple Phase-Shift Control of DAB Converter with Reconfigurable Transformer to Optimize the RMS Current for Wide Voltage Applications [未知]. |
| MLA | Xie, H. et al. "The Triple Phase-Shift Control of DAB Converter with Reconfigurable Transformer to Optimize the RMS Current for Wide Voltage Applications" [未知]. |
| APA | Xie, H. , Zhang, T. , Zhou, Y. , Xie, R. , Zhang, Y. . The Triple Phase-Shift Control of DAB Converter with Reconfigurable Transformer to Optimize the RMS Current for Wide Voltage Applications [未知]. |
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One current issue concerning rapidly developing electric vehicles (EVs) is range anxiety, especially when no charging station is around. A simple and expandable vehicle-to-vehicle (V2V) wireless charging scheme has been proposed to satisfy urgent charging needs. In the proposed V2V system, one EV serves as a mobile charger for the other. Two power relay coils without compensating capacitors are adopted, forming a strong coupling with the coils in the EV. Thus, power can be transferred from one EV to the other via the ac magnetic relay. The mathematical models of the existing loosely coupled V2V system and the proposed strongly coupled V2V system are established. The constant-voltage and constant-current operations for the proposed V2V system are explored. The experimental results reveal that, compared with the existing loosely coupled V2V system, employing the proposed strongly coupled V2V system can improve efficiency and reduce weight, volume, and cost.
Keyword ：
Constant current (CC) Constant current (CC) constant voltage (CV) constant voltage (CV) emergency charging emergency charging strongly coupled strongly coupled vehicle-to-vehicle (V2V) vehicle-to-vehicle (V2V) wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Xie, Ronghuan , Wu, Yuanchao , Tang, Hongmin et al. A Strongly Coupled Vehicle-to-Vehicle Wireless Charging System for Emergency Charging Purposes With Constant-Current and Constant-Voltage Charging Capabilities [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (4) : 3985-3989 . |
| MLA | Xie, Ronghuan et al. "A Strongly Coupled Vehicle-to-Vehicle Wireless Charging System for Emergency Charging Purposes With Constant-Current and Constant-Voltage Charging Capabilities" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 39 . 4 (2024) : 3985-3989 . |
| APA | Xie, Ronghuan , Wu, Yuanchao , Tang, Hongmin , Zhuang, Yizhan , Zhang, Yiming . A Strongly Coupled Vehicle-to-Vehicle Wireless Charging System for Emergency Charging Purposes With Constant-Current and Constant-Voltage Charging Capabilities . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (4) , 3985-3989 . |
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The unipolar, bipolar, and quadrupolar coils used in an electric vehicle wireless charging system are not interoperable with each other. Thus, there would be interoperability issues when the transmitting and receiving coils are not the same. To solve this issue, in this letter, we propose an asymmetrical quadrupolar coil that can be interoperable with the four conventional coils at the same position for efficient wireless power transfer, namely the unipolar coil, the bipolar coil along two perpendicular directions, and the quadrupolar coil. Large coupling coefficients can be achieved for the proposed coil with the four conventional coils when perfectly aligned. The misalignment performance with the four conventional coils is also investigated. An experimental prototype is developed to compare the conventional symmetrical quadrupolar coil with the proposed asymmetrical quadrupolar coil for validation of interoperability. The proposed asymmetrical quadrupolar coil achieves a maximum coupling coefficient of over 0.10 and a maximum dc-dc efficiency of over 85% with the four conventional coils.
Keyword ：
Bipolar Bipolar interoperability interoperability quadrupolar quadrupolar tolerance tolerance unipolar unipolar wireless charging wireless charging wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Zhang, Yiming , Liu, Chao , Zhou, Mingzhu et al. A Novel Asymmetrical Quadrupolar Coil for Interoperability of Unipolar, Bipolar, and Quadrupolar Coils in Electric Vehicle Wireless Charging Systems [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2024 , 71 (4) : 4300-4303 . |
| MLA | Zhang, Yiming et al. "A Novel Asymmetrical Quadrupolar Coil for Interoperability of Unipolar, Bipolar, and Quadrupolar Coils in Electric Vehicle Wireless Charging Systems" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 71 . 4 (2024) : 4300-4303 . |
| APA | Zhang, Yiming , Liu, Chao , Zhou, Mingzhu , Mao, Xingkui . A Novel Asymmetrical Quadrupolar Coil for Interoperability of Unipolar, Bipolar, and Quadrupolar Coils in Electric Vehicle Wireless Charging Systems . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2024 , 71 (4) , 4300-4303 . |
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Interoperability and misalignment tolerance issues are two urgent problems to be solved in electric vehicles wireless charging systems. To address these issues, a wireless power transfer (WPT) system based on decoupled mutually spliced double-D (DD) receiving coils is proposed in this article, which can achieve certain interoperability and antimisalignment performance. These two receiving coils are connected in series via the rectifiers on the dc side, resulting in the total equivalent mutual inductance equal to the sum of the absolute values of the mutual inductances between the transmitting coil and the two receiving coils. Compared with existing works, the proposed WPT system can achieve interoperability and misalignment tolerance with different transmitting coils: the square coil, the DD coil along the X- or Y-directions, and the quadrupole coil. A mathematical model and an experimental prototype are developed to verify the effectiveness of the proposed scheme, and the highest efficiency of the experimental prototype is 92.49%.
Keyword ：
Antimisalignment Antimisalignment decoupled decoupled double spliced double-D (DD) coil double spliced double-D (DD) coil Electric vehicles Electric vehicles Inductance Inductance Inductive charging Inductive charging interoperability interoperability Interoperability Interoperability Resistance Resistance Topology Topology Voltage Voltage wireless charging wireless charging wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Pan, Wenbin , Liu, Chao , Tang, Hongmin et al. An Interoperable Electric Vehicle Wireless Charging System Based on Mutually Spliced Double-D Coil [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (3) : 3864-3872 . |
| MLA | Pan, Wenbin et al. "An Interoperable Electric Vehicle Wireless Charging System Based on Mutually Spliced Double-D Coil" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 39 . 3 (2024) : 3864-3872 . |
| APA | Pan, Wenbin , Liu, Chao , Tang, Hongmin , Zhuang, Yizhan , Zhang, Yiming . An Interoperable Electric Vehicle Wireless Charging System Based on Mutually Spliced Double-D Coil . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (3) , 3864-3872 . |
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The unipolar and bipolar coils are two most common coil structures used in inductive power transfer systems. However, they are decoupled from each other when fully aligned, indicating that they are not interoperable with each other. In order to solve the interoperability problem, an interoperable transmitter composed of two adjacent unipolar coils and a three-switch dual-output inverter is proposed in this letter. It can achieve compatibility with unipolar or bipolar coils through circuit configuration by alternating the current directions with efficient wireless power transmission. Two different operating modes are presented, and the mathematical models are established. An experimental prototype is established. Besides, the anti-offset has been tested. The calculated and experimental results have revealed that the proposed system can effectively improve interoperability and has great potential for development.
Keyword ：
Bipolar coil Bipolar coil inductive power transfer (IPT) inductive power transfer (IPT) interoperability interoperability unipolar coil unipolar coil wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Xie, Ronghuan , Liu, Rongbin , Chen, Xiaoying et al. An Interoperable Wireless Power Transmitter for Unipolar and Bipolar Receiving Coils Based on Three-Switch Dual-Output Inverter [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (2) : 1985-1989 . |
| MLA | Xie, Ronghuan et al. "An Interoperable Wireless Power Transmitter for Unipolar and Bipolar Receiving Coils Based on Three-Switch Dual-Output Inverter" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 39 . 2 (2024) : 1985-1989 . |
| APA | Xie, Ronghuan , Liu, Rongbin , Chen, Xiaoying , Mao, Xingkui , Li, Xin , Zhang, Yiming . An Interoperable Wireless Power Transmitter for Unipolar and Bipolar Receiving Coils Based on Three-Switch Dual-Output Inverter . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (2) , 1985-1989 . |
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Abstract ：
In recent years, electric vehicles have developed rapidly, but the traditional wired charging method cannot meet the requirements of automation and convenience of the vehicles. Therefore, the wireless charging technology for electric vehicles has been widely studied for its safety and convenience. The common coil structures in the wireless charging system include the unipolar coil, the bipolar coil and the quadrupole coil. Due to the adaptation problems of different manufacturers, a new type of coil should be designed to get compatible with these coils to achieve the interoperability. This paper presents a new decoupled quadruple monopole receiving coil structure, which may achieve the interoperability with different transmitting coils. The decoupling between the four receiving coils is realized by adding a decoupling winding inside the receiving coils. Then, the total mutual inductance between the transmitting coil and the four monopole receiving coils is the sum of the absolute value of the mutual inductance between the transmitting coil and the four monopole coils by the series diode rectifier. A set of experimental prototype is built to verify the effectiveness of the scheme. The proposed four-monopole receiving coil is able to be compatible with the unipolar coil, the bipolar coil and the quadrupole coil, realizing the interoperability with different receiving coils. © 2024 Power System Technology Press. All rights reserved.
Keyword ：
Electric rectifiers Electric rectifiers Electric vehicles Electric vehicles Electric windings Electric windings Energy transfer Energy transfer Inductance Inductance Inductive power transmission Inductive power transmission Interoperability Interoperability
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| GB/T 7714 | Zhang, Yiming , Shen, Zhiwei , Mao, Xingkui et al. Interoperability of Electric Vehicle Wireless Charging System Based on Decoupled Four-monopole Receiving Coil [J]. | Power System Technology , 2024 , 48 (2) : 650-657 . |
| MLA | Zhang, Yiming et al. "Interoperability of Electric Vehicle Wireless Charging System Based on Decoupled Four-monopole Receiving Coil" . | Power System Technology 48 . 2 (2024) : 650-657 . |
| APA | Zhang, Yiming , Shen, Zhiwei , Mao, Xingkui , Chen, Kainan , Zhao, Zhengming . Interoperability of Electric Vehicle Wireless Charging System Based on Decoupled Four-monopole Receiving Coil . | Power System Technology , 2024 , 48 (2) , 650-657 . |
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A non-isolated soft-switching high-voltage-gain quasi-Z-source DC-DC converter is proposed in this paper. The converter has the advantages of a continuous input current, a common ground for input and output, a high voltage gain, and low stresses of switching devices. At the same time, all the switches in the converter operate under zero voltage switching (ZVS) conditions, and all the diodes operate under zero voltage zero current switching (ZVZCS) conditions, which can reduce the switching losses of the switches and the reverse recovery losses of the diodes. By introducing a three-winding coupled-inductor, the voltage gain of the converter is improved, while the addition of an active clamp circuit reduces the voltage spikes at both ends of the switches. The coupled-inductor with a smaller inductance value corresponds to a smaller copper loss and volume, thereby improving the efficiency and power density of the converter. A thorough analysis of the working modes of the converter is conducted, and the voltage gain of the converter, as well as the voltage and current stresses of the components, is derived. Steady-state analysis and parameter design are carried out. Finally, a 100 kHz, 200 W, 38~380 V experimental prototype is built, and the efficiency of the converter at rated power is 96.13%. The experimental results are consistent with the theoretical analysis, indicating the feasibility of the proposed converter. ©2024 Chin.Soc.for Elec.Eng.
Keyword ：
active clamp circuit active clamp circuit continuous input current continuous input current DC-DC converter DC-DC converter high voltage gain high voltage gain zero voltage switching zero voltage switching
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| GB/T 7714 | Zhou, M. , Liu, C. , Zhuang, Y. et al. A Non-isolated Soft-switching High-voltage-gain Quasi-Z-source DC-DC Converter; [一种非隔离型软开关高增益准 Z 源 DC-DC 变换器] [J]. | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (14) : 5714-5724 . |
| MLA | Zhou, M. et al. "A Non-isolated Soft-switching High-voltage-gain Quasi-Z-source DC-DC Converter; [一种非隔离型软开关高增益准 Z 源 DC-DC 变换器]" . | Proceedings of the Chinese Society of Electrical Engineering 44 . 14 (2024) : 5714-5724 . |
| APA | Zhou, M. , Liu, C. , Zhuang, Y. , Zhang, Y. . A Non-isolated Soft-switching High-voltage-gain Quasi-Z-source DC-DC Converter; [一种非隔离型软开关高增益准 Z 源 DC-DC 变换器] . | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (14) , 5714-5724 . |
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