Article
Engineering, Electrical & Electronic
Zhen Zhang, Shen Shen, Zhenyan Liang, Stephan H. K. Eder, Ralph Kennel
Summary: This article proposes an enhanced constant current control method for wireless in-flight charging systems. By using an online-trained RBFNN, the expected constant current output for battery charging is ensured. The effectiveness of the proposed control scheme is validated with simulated and experimental results.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
Jung-Hoon Cho, Sunghun Jung, Young-Joon Kim
Summary: This article presents a wireless power transfer system that can accommodate various receiver configurations, power distribution ratios, loads, and distances, including multiple relays. The relays in each receiver transfer power to adjacent receivers while functioning as relays, allowing for power consumption by local loads. The article introduces a methodology for designing WPT resonators that achieve optimum efficiency for multiple receivers with different power distribution ratios, loads, and distances. The WPT configuration can also be expanded to a large-scale mxn two-dimensional grid. The article provides a mathematical model of the proposed WPT system and demonstrates the concept of a multiple-receiver wireless power network using a power inverter. Experimental examples with variable parameters and a total power delivery of 100W are discussed, showcasing the practical applicability of this approach through a demonstration on a consumer display and speaker device.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Zhe Liu, Hongsheng Hu, Yu-Gang Su, Yue Sun, Fengwei Chen, Pengqi Deng
Summary: This article presents a double-receiver single capacitance coupled wireless power transfer system with a three-plate compact coupler to achieve free-position charging and superior system performance. The system consists of two independent receivers: one with a LCLC-S topology for constant-voltage output, and the other with a LCLC-M topology for constant-current output, without affecting each other. By circuit analysis and a simplified equivalent circuit of the three-plate coupler, the CV and CC characteristics are theoretically analyzed. The effectiveness of the proposed system is verified through prototype testing, showing stable output power for each receiver at any position within the transmitting plate.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Xuefeng Zhai, Hongxing Wang, Jun Li, Zheng Huang, Ruozhong Gao
Summary: The paper proposes a recharging station for UAVs using wireless power transfer technology to increase flight time, with a new receiver magnetic coupler design that enhances the anti-misalignment ability of the UAV, with a relatively light weight and easy installation. A laboratory prototype verified the feasibility of the proposed wireless charging method, achieving a maximum efficiency of 90.40%.
ELECTRICAL ENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
Kaibo Chen, Zhen Zhang
Summary: This article proposes a fast and real-time mutual inductance estimation method for drone in-flight wireless charging systems. The critical challenge for in-flight wireless charging systems is to track variations of mutual inductance caused by continuously changed misalignments between coupling coils, which is rarely explored in previous studies. The proposed rotating-coordinate-based estimation method effectively enhances the rapidity and simplicity of the estimation process, while eliminating wireless communication links. With the features of accuracy, rapidity, and real-time performance, it can be an ideal solution for drone in-flight wireless charging systems.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Junwei Liu, Chi Shing Wong, Chuan Sun, Fei Xu, Xingyue Jiang, K. H. Loo
Summary: This paper proposes a low-cost software-reconfigurable multistage constant current (MSCC) charging technique for a typical single-stage dc-dc series-series compensated WPT converter using multiple high-order harmonics power transmission approach. Such a technique achieves inherent load-independent CC output and zero phase angle input characteristics without requiring any additional component. It also provides a precharge process for deeply discharged batteries to increase their lifetime. A scaled-down design example and corresponding laboratory prototype are implemented to verify the proposed method.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Samir Chowdhury, Md Tawhid Bin Tarek, Md Ehsanul Haque, Yilmaz Sozer
Summary: This article proposes a two-layer overlapping winding-based three-phase wireless vehicle charging system that offers higher coupling and balance inductance matrices compared to conventional systems, resulting in enhanced efficiency and coupling.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Yu Gu, Jiang Wang, Zhenyan Liang, Zhen Zhang
Summary: This article proposes a novel mutual-inductance-dynamic-predicted constant current (CC) control scheme for drone wireless in-flight charging systems, showing improved real-time capability and enhanced robustness. Experimental results demonstrate high prediction accuracy, CC control accuracy, and average response time.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Chao Rong, Bo Zhang, Yanwei Jiang, Xujian Shu, Zhihao Wei
Summary: This article proposes a misalignment-tolerant fractional-order wireless power transfer system that can maintain constant current or constant voltage output. It improves the freedom and convenience of wireless charging by adjusting the resonant frequency and operating frequency.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhenjie Li, Jiafang He, Yusheng Huo, Mingfei Ban, Yiqi Liu, Jiuqing Liu
Summary: This article introduces a wireless charging system with two reconfigurable transmission channels, which achieves constant current/voltage charging, anti-misalignment ability, and zero voltage switching operation. The design and working principle of the orthogonal magnetic coupler are described, and the coupling performance is simulated using Ansys. The topology and principle of the designed wireless charging system are analyzed, and the relationship between charging controllability, misalignment performance, and system parameters is discussed. A magnetic flux controllable inductor is used for power adjustment and improvement of anti-misalignment ability. PLECS simulations confirm the feasibility of the design goals, and an experimental prototype is built to validate the method's feasibility.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Marine
Tao Xia, Xiaoliang Zhang, Zhiying Zhu, Haitao Yu, Hang Li
Summary: Addressing the issue of unstable output power in wireless charging systems for AUVs, this paper introduces a magnetic coupler (MC) with an arc-shaped core structure and proposes an output power stabilization control strategy based on mutual inductance identification algorithm. The MC is designed specifically for the cylinder-shaped AUV, with high tolerances, excellent magnetic coupling, and weak EMI. A mathematical model of the LCC-S type magnetically coupled resonant wireless power transfer system is developed and a particle swarm parameter identification algorithm with adaptive inertia weights is proposed. Real-time adaptation of the duty cycle for the Buck-Boost circuit ensures steady control of the output power. Experimental results show a maximum error within 2.5% in mutual inductance identification and a steady output power at around 680 W with a maximum fluctuation rate of 4.90%, verifying the efficiency of the power stabilization control strategy.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Computer Science, Information Systems
Sang-Won Lee, Young-Kyun Cho
Summary: This paper proposes a single-stage wireless battery charging circuit that is capable of constant current and constant voltage charging modes without the need for complex control algorithms or additional components, showcasing excellent performance.
Article
Automation & Control Systems
Zhimeng Liu, Lifang Wang, Yanjie Guo, Shufan Li
Summary: This article proposes a primary-side linear control strategy for wireless power transfer system to achieve constant current (CC)/voltage (CV) charging. The strategy combines magnetic integration on the primary side and non-compensation topology on the secondary side to reduce the size of the compensation inductor and make the system more compact. The improved load parameters identification method is used to accurately identify the current, voltage, and equivalent resistance of the load. The experiments show that the proposed control strategy achieves high accuracy in CC and CV charging.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Automation & Control Systems
Wenqi Zhu, Yutaro Komiyama, Ayano Komanaka, Kien Nguyen, Hiroo Sekiya
Summary: This article presents a load-independent ZCS parallel-resonant inverter with a constant output current. The inverter achieves constant-current output without the need for any control method and maintains ZCS even with load variations, ensuring high power efficiency at MHz-order switching frequencies. The authors conduct a comprehensive circuit analysis and propose a step-by-step parameter design method. A 25 W, 1 MHz prototype is implemented to demonstrate the effectiveness of the load-independent inverter.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Zhenjie Li, Hao Liu, Yuhong Tian, Yiqi Liu
Summary: The proposed primary-side control method for wireless charging system achieves high precision CC/CV charging, reduces the influence of horizontal misalignment on estimation accuracy, and ensures controllability of charging current.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Chemistry, Analytical
Zongze Jiang, Peng Xu, Yongbin Du, Feng Yuan, Kai Song
Summary: A new drift compensation method based on balanced distribution adaptation (BDA) is proposed in this paper, which adjusts the conditional and marginal distributions to reduce the mismatch between two domains effectively, improving recognition accuracy. The BDA method outperforms existing joint distribution adaptation (JDA) method and other standard drift compensation methods, achieving significant advancements in recognition accuracy.
Article
Energy & Fuels
Jianing Xu, Yulong Ni, Tianao Cao, Chao Wu, Kai Song, Jinhai Jiang
Summary: The second-use application technique is an effective method to deal with retired batteries. A fast diagnostic method is developed for the accelerated degradation fault by detecting unusual changes in charging voltage and proposing a new fault feature kappa.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Medicine, Research & Experimental
Haijun Cai, Hui Guo, Yixuan Deng, Jinhai Jiang, Siyuan Liu, Wenge He, Huagang Jian
Summary: This study reveals that RRM2 regulates osteogenic differentiation of MEFs through the canonical Wnt/β-catenin signaling pathway, providing a possible therapeutic target for osteoporosis.
EXPERIMENTAL AND THERAPEUTIC MEDICINE
(2022)
Article
Energy & Fuels
Jinhai Jiang, Yu Lan, Ziming Zhang, Xingjian Zhou, Kai Song
Summary: This article studies the thermal estimation and design of the magnetic coupler based on a 6.6 kW wireless electric vehicle charging system. Heat dissipation measures, such as filling the surface of the shielding aluminum plate with thermal conductive silicone grease, are proposed and their effectiveness is verified through simulation and experiments.
Article
Engineering, Electrical & Electronic
Kai Song, Yu Lan, Ruizhi Wei, Guang Yang, Fengshuo Yang, Weihan Li, Jinhai Jiang, Chunbo Zhu, Yunwei Li
Summary: This article proposes a control method based on the variable inductor and capacitor to improve power output in wireless charging systems with weak coupling. The study demonstrates that by regulating the variable inductor and capacitor, zero phase angle input and full output power can be achieved under certain misalignment. Experimental results confirm the effectiveness of the proposed method.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Review
Chemistry, Multidisciplinary
De'an Wang, Jiantao Zhang, Shumei Cui, Zhi Bie, Kai Song, Chunbo Zhu, Milyaev Igor Matveevich
Summary: This paper provides an extensive review of the development and application of high-performance magnetic materials in magnetic coupling resonant wireless power transfer (MCR-WPT). It offers an exclusive reference to researchers and engineers interested in the technology, highlighting critical issues to be addressed. The potential challenges and opportunities of WPT magnetic materials are presented, along with the future development directions of the technology.
Article
Energy & Fuels
Ying Sun, Tian Zhou, Jinhai Jiang, Guo Wei, Chunbo Zhu, Kai Song
Summary: In this paper, a high sensitivity foreign object detection method based on excitation frequency optimization is proposed. The detection coil is designed and the optimal excitation frequency is selected to achieve the best detection effect. Experimental results show that the sensitivity of the system is up to 97.56%.
Article
Energy & Fuels
Fengshuo Yang, Jinhai Jiang, Chuanyu Sun, Aina He, Wanqi Chen, Yu Lan, Kai Song
Summary: Existing research on UAV wireless charging systems has often overlooked the impact of the UAV fuselage on the efficiency of the magnetic coupler. This study proposes a design that utilizes nanocrystalline cores to reduce the loss caused by the UAV fuselage. By optimizing the parameters of the asymmetric circular coils and modeling the fuselage as an additional coil, the impact of eddy current loss induced by the fuselage is revealed. The use of an optimized nanocrystalline alloy film further improves the efficiency of the coupler.
Review
Energy & Fuels
Kai Song, Yu Lan, Xian Zhang, Jinhai Jiang, Chuanyu Sun, Guang Yang, Fengshuo Yang, Hao Lan
Summary: Wireless charging technology is an important trend in future EV power supply due to its safety, flexibility, and convenience. This study reviews the research status of the interoperability of EV wireless charging technology, including its definition, composition, standards, evaluation methods, and existing problems and challenges.
Article
Cell Biology
Shi-Yu Wang, Jin-Hai Jiang, Si-Yuan Liu, Jie Zhang, Xiang Gao, Hang Liu, Kai-Xin Ke, Yue Jiang, Lu Liu, Bai-Cheng He
Summary: IL-6 plays a dual role in regulating bone metabolism, and its relationship with BMP9 in osteogenic differentiation needs further investigation. BMP9 can upregulate IL-6 and its osteoblastic markers in mouse embryonic fibroblasts (MEFs), but this effect is reduced when IL-6 is knocked down. The promotion of BMP9 osteoblastic potential by IL-6 may be mediated through activating Stat-3/mTORC1 pathway.
Article
Chemistry, Analytical
Haifeng Se, Kai Song, Jinhai Jiang, Hui Liu, Bo Wang, Xuanhe Wang, Weiyan Zhang, Jijiang Liu
Summary: This paper proposes a novel online drift compensation framework based on active learning to handle multitasking, including sensor drift, gas classification, concentration prediction, and labeling cost. Experimental results demonstrate that the proposed method achieves the best generalization ability with the minimum labeling cost.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Inorganic & Nuclear
Tengdie Wu, Shen Wang, Yongxing Lv, Tianyue Fu, Jinhai Jiang, Xin Lu, Zhipeng Yu, Jie Zhang, Lianke Wang, Hongping Zhou
Summary: Tetradentate N2S2 coordination platforms are widely present in biological systems, providing metalloenzymes and metalloproteins with diverse reactivities and functions. However, the development of N2S2 scaffolds in coordination chemistry is still limited. In this study, a novel tetradentate N2S2 ligand was designed to assemble a series of first-row transition metal complexes, demonstrating various geometries and coordination numbers. The ligand showed great structural flexibility, and the optical properties of the compounds were also investigated.
DALTON TRANSACTIONS
(2022)
Article
Engineering, Electrical & Electronic
Fandan Zhao, Jinhai Jiang, Shumei Cui, Xingjian Zhou, Chunbo Zhu, Ching Chuen Chan
Summary: This article proposes a design of bipolar nonsalient pole (BNSP) transmitter for high-power EV dynamic wireless power transfer system, originating from motor theory. By comparing with traditional bipolar salient pole (BSP) transmitter, it is found that BNSP transmitter has higher effective mutual inductance and system efficiency.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Fandan Zhao, Jinhai Jiang, Shumei Cui, Chunbo Zhu, C. C. Chan
Summary: The paper proposes a design of a dual-phase non-salient pole receiver for an EV DWPT system with a bipolar transmitter, successfully solving the contradiction between reducing the volume or cost of the receiver and improving misalignment tolerance. The proposed receiver has significant advantages in volume, wire length, and misalignment tolerance, as validated through simulations and experimental comparisons.
WORLD ELECTRIC VEHICLE JOURNAL
(2021)
