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学者姓名:江彦伟
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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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This paper proposes a distance-independent wireless charging system that achieves constant current (CC) and constant voltage (CV) output through utilization of a reconfigurable topology, capable of seamlessly switching between a two-coil and a three-coil configuration. In order to enhance output adjustability and improve the efficiency of the charging process, this system combines the advantages of fractional-order and integer-order resonant circuits. In the two-coil configuration, the output of the inverter on the transmitter side is modulated as that of a fractional-order capacitor. By analyzing frequency characteristics of the fractional-order circuit, a control strategy of variable fractional order is introduced to achieve CC output against variations of transfer distance based on a mutual inductance recognition method. After transitioning to the three-coil configuration, the system inherently achieves a CV output by operating the inverter at a fixed frequency and forming an integer-order resonant circuit. In addition, in both mentioned configurations, the full-bridge (FB) mode and half-bridge (HB) mode of the inverter are utilized to minimize switching losses and broaden the range of soft-switching operation, catering to various load conditions. Finally, an experimental prototype is built to achieve CC and CV output within a wide charging range.
Keyword :
Constant current/voltage (CC/CV) charging Constant current/voltage (CC/CV) charging hybrid topology hybrid topology reconfigurable reconfigurable wireless power transfer (WPT) wireless power transfer (WPT)
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GB/T 7714 | Rong, Chao , Zhang, Bo , Jiang, Yanwei et al. A Distance-Independent Wireless Charging System With Hybrid Topology and Control [J]. | PROCEEDINGS OF 2024 IEEE WIRELESS POWER TECHNOLOGY CONFERENCE AND EXPO, WPTCE , 2024 : 821-824 . |
MLA | Rong, Chao et al. "A Distance-Independent Wireless Charging System With Hybrid Topology and Control" . | PROCEEDINGS OF 2024 IEEE WIRELESS POWER TECHNOLOGY CONFERENCE AND EXPO, WPTCE (2024) : 821-824 . |
APA | Rong, Chao , Zhang, Bo , Jiang, Yanwei , Zhou, Jiali . A Distance-Independent Wireless Charging System With Hybrid Topology and Control . | PROCEEDINGS OF 2024 IEEE WIRELESS POWER TECHNOLOGY CONFERENCE AND EXPO, WPTCE , 2024 , 821-824 . |
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Capacitive power transfer (CPT) technique uses coupled metal plates for energy transmission, which has the advantages of negligible eddy-current loss and low weight. To achieve efficient power transfer, the CPT system often adopts circuit resonance and impedance compensation, which are generally realized by integer-order components, such as inductors and capacitors. However, it remains a fundamental challenge to create a CPT system whose transfer efficiency and output power are robust against the variation of resonant frequency and the coupled plates' relative position. Therefore, this article proposes a robust fractional-order autonomous CPT system containing a fractional-order inductor. Theoretical analysis shows that the transfer efficiency and output power of the proposed fractional-order CPT system are inherently robust not only to the variation of the coupled plates' relative position but also to the resonant frequency. In contrast, the transfer efficiency and output power of traditional integer-order CPT systems are sensitive to the resonant frequency. The available experimental results verify the effectiveness of the proposed system.
Keyword :
Autonomous Autonomous capacitive power transfer (CPT) capacitive power transfer (CPT) Capacitors Capacitors Couplings Couplings fractional order fractional order Inductors Inductors Receivers Receivers Resonant frequency Resonant frequency RLC circuits RLC circuits robust transmission robust transmission Transmitters Transmitters
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GB/T 7714 | Jiang, Yanwei , Zhou, Yang , Zhang, Bo et al. A Robust Capacitive Power Transfer System via Fractional-Order Autonomous Circuit [J]. | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2024 , 12 (3) : 3258-3267 . |
MLA | Jiang, Yanwei et al. "A Robust Capacitive Power Transfer System via Fractional-Order Autonomous Circuit" . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS 12 . 3 (2024) : 3258-3267 . |
APA | Jiang, Yanwei , Zhou, Yang , Zhang, Bo , Chen, Wei , Chen, Qingbin , Shu, Xujian . A Robust Capacitive Power Transfer System via Fractional-Order Autonomous Circuit . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2024 , 12 (3) , 3258-3267 . |
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This article proposed an autonomous wireless power transfer system with misalignment tolerance and improved control degree of freedom based on detuning control for battery charging, in which the outputs can be regulated continuously and smoothly without additional dc-dc converters while maintaining soft-switching or zero-phase-angle operation of the inverter. Theoretical analysis shows that constant current (CC) or constant voltage (CV) independent of coupling coefficient and load can be achieved without information exchange between transmitter and receiver, which eliminates wireless communication. Furthermore, when the detuning ratio is controlled to be constant, a transfer efficiency insensitive to the variation of the coupling coefficient can be obtained. A prototype with a 6-A charging current and a 36-V charging voltage is built to support the feasibility of the proposed method. Experimental results demonstrate that within the coupling coefficient range of 0.283-0.456, CC and CV with transfer efficiency greater than 91.5% can be achieved.
Keyword :
Autonomous system Autonomous system battery charging battery charging detuning control detuning control misalignment tolerance misalignment tolerance wireless power transfer (WPT) wireless power transfer (WPT)
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GB/T 7714 | Wu, Lihao , Zhang, Bo , Jiang, Yanwei . A Misalignment-Tolerant Autonomous Wireless Power Transfer System for Battery Charging Based on Detuning Control [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (3) : 3851-3863 . |
MLA | Wu, Lihao et al. "A Misalignment-Tolerant Autonomous Wireless Power Transfer System for Battery Charging Based on Detuning Control" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 39 . 3 (2024) : 3851-3863 . |
APA | Wu, Lihao , Zhang, Bo , Jiang, Yanwei . A Misalignment-Tolerant Autonomous Wireless Power Transfer System for Battery Charging Based on Detuning Control . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (3) , 3851-3863 . |
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Wireless power transfer (WPT) is an emerging technology that enables the wireless transfer of electrical energy from power supplies to electrical equipment. It has been widely used in electric vehicles, mobile phones, household appliances, medical devices, and other fields. However, the frequency splitting and bifurcation phenomena existing in WPT systems are the fundamental obstacles and challenges that affect the effective operation of WPT systems. In this paper, a method based on the fractional-order circuit is proposed to simultaneously suppress the frequency splitting and bifurcation phenomena by changing the order of fractional-order capacitor. By replacing the compensation capacitor in the transmitter of the traditional WPT system with a fractional-order capacitor, a fractional-order WPT system is formed. Then, using fractional calculus and circuit theory, the mathematical model of the proposed WPT system containing a fractional-order capacitor is established, and the frequency splitting and bifurcation phenomena are analyzed. The theoretical results show that the frequency splitting and bifurcation phenomena are suppressed only by adjusting the order of fractional-order capacitor, and the output power of the original resonant frequency is improved. Finally, the experimental prototype is implemented to validate the theoretical results. In this paper, a method based on the fractional-order circuit is proposed to simultaneously suppress the frequency splitting and bifurcation phenomena by changing the order of fractional-order capacitor. The theoretical results show that the frequency splitting and bifurcation phenomena are suppressed only by adjusting the order of fractional-order capacitor, and the output power of the original resonant frequency is improved. Finally, the experimental prototype is implemented to validate the theoretical results.image
Keyword :
fractional-order fractional-order frequency bifurcation frequency bifurcation frequency splitting frequency splitting wireless power transfer wireless power transfer
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GB/T 7714 | Shu, Xujian , Zhang, Xueqi , Jiang, Yanwei et al. A Fractional-Order Method of Frequency Splitting and Bifurcation Suppression for Wireless Power Transfer Systems [J]. | INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS , 2024 , 52 (12) : 6468-6478 . |
MLA | Shu, Xujian et al. "A Fractional-Order Method of Frequency Splitting and Bifurcation Suppression for Wireless Power Transfer Systems" . | INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 52 . 12 (2024) : 6468-6478 . |
APA | Shu, Xujian , Zhang, Xueqi , Jiang, Yanwei , Zhang, Bo . A Fractional-Order Method of Frequency Splitting and Bifurcation Suppression for Wireless Power Transfer Systems . | INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS , 2024 , 52 (12) , 6468-6478 . |
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电场耦合无线电能传输ECPT(electric-field coupled wireless power transfer)系统具有耦合极板轻便、跨金属传能、涡流损耗可忽略等优点.其中,宇称-时间对称电场耦合无线电能传输PT-ECPT(parity-time symmetric ECPT)系统具有在耦合极板间距发生变化时保持恒定输出的特性,具有广泛的应用前景.基于此,研究了PT-ECPT系统的电场辐射分布.理论分析、仿真及实验结果表明,在强耦合区域且输出功率相同的情况下,PT-ECPT系统的电场分布在耦合系数较小时比传统的谐振式ECPT系统更为集中,使得PT-ECPT在小耦合系数时安全性更高.
Keyword :
宇称-时间对称 宇称-时间对称 无线电能传输系统 无线电能传输系统 电场分布 电场分布 电场泄露 电场泄露 电场耦合 电场耦合
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GB/T 7714 | 郑小瑶 , 江彦伟 , 疏许健 et al. 宇称-时间对称电场耦合无线电能传输系统电场分布特性研究 [J]. | 电源学报 , 2024 , 22 (5) : 60-66 . |
MLA | 郑小瑶 et al. "宇称-时间对称电场耦合无线电能传输系统电场分布特性研究" . | 电源学报 22 . 5 (2024) : 60-66 . |
APA | 郑小瑶 , 江彦伟 , 疏许健 , 周阳 , 赵小光 . 宇称-时间对称电场耦合无线电能传输系统电场分布特性研究 . | 电源学报 , 2024 , 22 (5) , 60-66 . |
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In this paper, using dual-frequency modulation (DFM) and phase synchronization method (PSM), a flexible and controllable wireless power transfer (WPT) system with soft switching based on parity-time (PT) symmetry is proposed for kitchen appliances. Here, the system outputs can be regulated by configuring the number ratio of two modulation pulses with different frequencies, without the need for extra DC-DC converters or changing the duty cycle of the inverter. Moreover, a control method for generating and arranging the hybrid frequencies pulse sequence is proposed based on PSM to satisfy the condition of PT symmetry. Theoretical analysis indicates that a controllable output power insensitive to the coupling coefficient can be acquired only by relying on a single-stage inverter while maintaining soft-switching or zero-voltage switching (ZVS) operation, thereby reducing power losses and improving system cost-effectiveness and integration. Furthermore, dual-side communication can be eliminated. The results of the experiment confirm that a controllable stable output power with a constant coil-coil efficiency of 95.8% and a peak DC-to-load efficiency of 93.8% can be maintained within a lateral tolerance range of 0-14 cm.
Keyword :
Coils Coils controllable output controllable output Control systems Control systems Couplings Couplings Dual-frequency modulation (DFM) Dual-frequency modulation (DFM) Heating systems Heating systems Inverters Inverters parity-time (PT) symmetry parity-time (PT) symmetry Power generation Power generation Receivers Receivers Resistors Resistors soft switching soft switching Transmitters Transmitters Zero voltage switching Zero voltage switching
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GB/T 7714 | Wu, Lihao , Zhang, Bo , Jiang, Yanwei . Output-Power-Controllable Parity-Time-Symmetric Wireless Power Transfer System With Soft Switching for Kitchen Appliances [J]. | IEEE TRANSACTIONS ON CONSUMER ELECTRONICS , 2024 , 70 (4) : 6630-6640 . |
MLA | Wu, Lihao et al. "Output-Power-Controllable Parity-Time-Symmetric Wireless Power Transfer System With Soft Switching for Kitchen Appliances" . | IEEE TRANSACTIONS ON CONSUMER ELECTRONICS 70 . 4 (2024) : 6630-6640 . |
APA | Wu, Lihao , Zhang, Bo , Jiang, Yanwei . Output-Power-Controllable Parity-Time-Symmetric Wireless Power Transfer System With Soft Switching for Kitchen Appliances . | IEEE TRANSACTIONS ON CONSUMER ELECTRONICS , 2024 , 70 (4) , 6630-6640 . |
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基于负电阻的磁耦合无线电能传输系统是一种典型的自治系统,已被证明具有恒定的输出特性,对比研究了基于负电阻的S-S型和S-P型两种常用拓扑结构的传输特性.首先,通过耦合模方程求解基于负电阻的磁耦合无线电能传输系统工作频率和临界耦合系数;接着,结合解析和数值分析方法对比研究了两种拓扑的输出功率和传输效率,理论分析表明当耦合系数相同时,S-S型拓扑只有在负载电阻较小时才能工作在恒输出状态,而S-P型拓扑只有在负载电阻较大时才能工作在恒输出状态,最后通过电路仿真证明了理论分析的正确性,为基于负电阻的磁耦合无线电能传输系统设计提供了有益参考.
Keyword :
临界耦合系数 临界耦合系数 传输功率 传输功率 传输效率 传输效率 磁耦合 磁耦合 负电阻 负电阻
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GB/T 7714 | 修冠权 , 江彦伟 , 吴勇材 et al. 基于负电阻的S-S与S-P型自治磁耦合无线电能传输特性对比研究 [J]. | 电气开关 , 2024 , 62 (6) : 18-26 . |
MLA | 修冠权 et al. "基于负电阻的S-S与S-P型自治磁耦合无线电能传输特性对比研究" . | 电气开关 62 . 6 (2024) : 18-26 . |
APA | 修冠权 , 江彦伟 , 吴勇材 , 吴芷晗 , 周品 . 基于负电阻的S-S与S-P型自治磁耦合无线电能传输特性对比研究 . | 电气开关 , 2024 , 62 (6) , 18-26 . |
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频率追踪技术作为磁耦合谐振式无线电能传输系统中的关键技术,能够有效避免其他因素对输出特性的影响.首先阐述了MCR-WPT系统的基本原理和频率特性,接着介绍了不同耦合状态下,频率对最大传输功率、最大传输效率、输出电压的影响,列举了追踪最大传输功率、最大传输效率、恒定电压的频率追踪技术研究方法,分析了相应技术的优缺点,最后总结了频率追踪技术亟待解决的问题及其发展前景,并对未来的研究方向进行了展望.
Keyword :
无线电能传输 无线电能传输 磁耦合 磁耦合 综述 综述 频率追踪技术 频率追踪技术
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GB/T 7714 | 吴勇材 , 江彦伟 , 修冠权 et al. 磁耦合无线电能传输频率追踪技术研究综述 [J]. | 电气开关 , 2024 , 62 (6) : 1-7 . |
MLA | 吴勇材 et al. "磁耦合无线电能传输频率追踪技术研究综述" . | 电气开关 62 . 6 (2024) : 1-7 . |
APA | 吴勇材 , 江彦伟 , 修冠权 , 吴芷晗 . 磁耦合无线电能传输频率追踪技术研究综述 . | 电气开关 , 2024 , 62 (6) , 1-7 . |
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In wireless power transfer (WPT) systems, it is well known that the series-parallel (SP)-compensated topology is preferable for large load systems, like biomedical implants and consumer electronics, etc. However, it is a major challenge for practical SP-compensated WPT applications to obtain efficient and stable power transfer characteristics under the variations of coupling coefficient and resonant frequency. Therefore, based on fractional-order (FO) circuit theory, this paper proposes an SP-compensated FOWPT system with coupling independence and detuning insensitivity. Experimental results show that stable output power is maintained with a constant transfer efficiency in a wide load range, and when the resonant frequency of the receiver is detuned +/- 5%, the fluctuations of output power and transfer efficiency are less than 1%. The experiment validates the effectiveness of the proposed system.
Keyword :
Coupling independence Coupling independence detuning insensitivity detuning insensitivity fractional-order wireless power transfer (FOWPT) fractional-order wireless power transfer (FOWPT) series- parallel (SP) series- parallel (SP)
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GB/T 7714 | Shu, Xujian , Wu, Guoxin , Zhang, Xueqi et al. A Series-Parallel-Compensated Fractional-order Wireless Power Transfer System With Coupling Independence and Detuning Insensitivity [J]. | IEICE ELECTRONICS EXPRESS , 2024 , 21 (17) . |
MLA | Shu, Xujian et al. "A Series-Parallel-Compensated Fractional-order Wireless Power Transfer System With Coupling Independence and Detuning Insensitivity" . | IEICE ELECTRONICS EXPRESS 21 . 17 (2024) . |
APA | Shu, Xujian , Wu, Guoxin , Zhang, Xueqi , Jiang, Yanwei , Zhang, Bo . A Series-Parallel-Compensated Fractional-order Wireless Power Transfer System With Coupling Independence and Detuning Insensitivity . | IEICE ELECTRONICS EXPRESS , 2024 , 21 (17) . |
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