Article
Engineering, Electrical & Electronic
Jiayu Zhou, Giuseppe Guidi, Kjell Ljokelsoy, Jon Are Suul
Summary: This article discusses the influence of constant voltage load characteristics on inductive power transfer systems, causing poorly damped oscillation mode. It identifies a critical mode from a linearized state-space model and proposes two control approaches to attenuate the oscillations. The first approach analyzes the influence of operating frequency and how slightly off-resonant operation can increase damping. The second approach studies active damping based on phase shift modulation with limited phase shift angles applied to the PDM signal when oscillations are detected.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Energy & Fuels
Mohammad Reza Gholipour, Mehdi Saradarzadeh, Shahrokh Farhangi
Summary: The pulse charging profile is used in Inductive Power Transfer (IPT) due to its advantages over the Constant Current-Constant Voltage method. The LCC-Series compensation topology is chosen to minimize reliance on variations in Li-ion battery parameters. The control loops for pulse charging are developed using IPT transfer functions, and a software-based solution is provided to address the challenges associated with the pulse charging technique in IPT systems.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Civil
Jianghua Lu, Guorong Zhu, Deyan Lin, Yiming Zhang, Haoran Wang, Chunting Chris Mi
Summary: In this paper, a unified resonant tuning configuration with minimum passive component counts is proposed to achieve CC and CV outputs at two ZPA operating frequencies. Using the simplest IPT topologies, both CC and CV outputs with ZPA are achieved with a minimum number of compensation components and no additional power switches.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Zhicong Huang, Guoyu Wang, Jidong Yu, Xiaohui Qu
Summary: The novel clamp coil assisted IPT battery charger proposed in this letter features an inherent, passive, automatic, and smooth CC-to-CV transition, which eliminates the necessity of state-of-charge detection and active control, making it rugged and reliable. Minimalist design and near-unity power factor make it suitable for wireless onboard charging applications, with experiment results validating its capability.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Computer Science, Information Systems
Vincenzo Castiglia, Nicola Campagna, Rosario Miceli, Fabio Viola, Frede Blaabjerg
Summary: This article proposes a quasi-Z-source-based Inductive Power Transfer system for Electric Vehicles charging applications. The system achieves DC/DC regulation and DC/AC conversion through a single-stage conversion, reducing cost and complexity while improving reliability. The battery efficient charging and long service life are ensured through the constant current/constant voltage method.
Article
Engineering, Electrical & Electronic
Fei Xu, Siu-Chung Wong, Chi K. Tse
Summary: This paper optimizes the system efficiency of a single-stage inductive power transfer charger by minimizing overall losses using a constant-power charging scheme. The conditions of zero voltage switching and minimum circulating reactive power are derived, and the power losses in different components are analyzed and optimized under constant-power output condition. A novel optimal control strategy is proposed to maintain constant-power output and maximum efficiency throughout the charging process.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Energy & Fuels
Po-Hsuan Chen, Chaojie Li, Zhaoyang Dong, Matthew Priestley
Summary: In this paper, a wireless battery charger using inductive power transfer (IPT) is proposed. The charger achieves constant-current constant-voltage (CC-CV) charging through a closed-loop controlled IPT. It can smoothly transition between the CC stage and the CV stage by swapping resonant capacitors. The charging voltage and current are regulated by controlling the phase-shifted angle of the high-frequency inverter on the primary side. The charger demonstrates stable charging current in the CC stage and smooth transition into the CV stage.
Article
Engineering, Electrical & Electronic
Jia Li, Chong Zhu, Jixie Xie, Fei Lu, Xi Zhang
Summary: This article proposes a mistuned inductive power transfer (IPT) system structure and design methods to improve misalignment tolerance for wireless charging of autonomous underwater vehicles. The system achieves constant current and voltage output even with charging coils misaligned in horizontal and vertical directions. Experimental results demonstrate that the proposed system improves charging freedom and stability in the harsh underwater environment.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Computer Science, Information Systems
Da Li, Xusheng Wu, Jianxin Gao, Jianghua Lu, Wei Gao
Summary: This paper analyzes the sensitivity of double-sided LCC compensation network parameters on resonance points and output characteristics, and proposes a design method to achieve constant current and voltage output with parameter optimization. The results show that the transmission efficiency of the system reaches 88.9% and 88.5% under constant current and voltage output resonant points.
Article
Engineering, Electrical & Electronic
Chunwei Ma, Ruoyu Yao, Cheng Li, Xiaohui Qu
Summary: This article proposes a wireless charger with a proper second-order compensation network to reduce the size of the clamp coil and cost. The charger features automatic and smooth CC-to-CV transition, near unity power factor, soft switching, and open-circuit protection during CC charging.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Hossein Gholizade-Narm, Sayed Ali Khajehoddin, Masoud Karimi-Ghartemani
Summary: This article presents a new method to achieve reduced-order controllers by integrating controller-plant dynamics. By replacing a third-order PR+PI function with a first-order PI function without compromising its features, the proposed approach leads to a generally more robust and stable operation of the inverter.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Green & Sustainable Science & Technology
Muhammad Ahsan Ayub, Saddam Aziz, Yitao Liu, Jianchun Peng, Jian Yin
Summary: This article proposes a single-phase five-level voltage inverter topology with six switches for renewable energy applications. The suggested inverter reduces switching and conduction losses with its low switch count and uses a multi-error feedback controller with modified sinusoidal pulse width modulation to maintain the output voltage within the desired range. The absence of clamping diodes and bulky capacitors enables the use of a simple model predictive controller, decreasing circuit cost and improving overall efficiency. Simulation and hardware results are provided to validate the originality of the study.
Article
Engineering, Electrical & Electronic
Hassan Jafari, Arif I. I. Sarwat
Summary: The design of an IPT controller to tune EV charging level is crucial. It is self-tuned without the need for wireless communication channel, offering simplicity, speed, ease of implementation, and cost-effectiveness. The proposed controller achieves efficiency up to 90.73% thanks to soft-switching.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Hailong Zhang, Yafei Chen, Dong-Hee Kim, Zhen Li, Min Zhang, Guangyao Li
Summary: In this article, a variable inductor control method is proposed to stabilize the output voltage and current by adjusting the dc bias current of the secondary side. The proposed method achieves near-zero phase angle of the input impedance and does not require any auxiliary circuit. Experimental results show that stable output voltage and current are ensured with horizontal and vertical offsets, and the maximum efficiency is 92.9%, higher than the conventional dc-dc regulation method by 2.3%.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yao Wang, Zhonghao Dongye, Hua Zhang, Chong Zhu, Fei Lu
Summary: This article introduces a load-independent domino-type inductive power transfer system for multiple loads, utilizing a unique domino topology for independent load output and long-distance transmission capability. The design features an innovative unipolar domino coupler configuration for efficient power transfer.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Yi Yu, Guo-Ping Liu, Xingwei Zhou, Wenshan Hu
Summary: This article presents a novel blockchain technology-assisted networked predictive secure control approach to enhance the security and stability of networked control systems (NCSs). By introducing blockchain technology and designing networked predictive control, the issues of real-time performance and security in NCSs are addressed.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Yi Yu, Guo-Ping Liu, Xiaoran Dai, Wenshan Hu
Summary: A novel coordinated control method based on multistep state predictions with active compensation of delay is proposed to address the poor dynamic consensus performance of currents in modular dc-dc converters. The method includes the design of a multistep state predictor and the optimization of the coordinating cost of currents. By minimizing a distributed coordinating performance index function, the optimal control protocol is derived to minimize the consensus error between output currents and compensate for communication constraints. The performance of the proposed scheme is verified through case studies in an experimental testbed.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Engineering, Electrical & Electronic
Shiqi Guan, Wenshan Hu, Zhongcheng Lei, Hong Zhou
Summary: This paper introduces the application of digital twin technology in electric power communication networks and proposes the concept of online digital twin tools as learning and training resources. The study covers tool design, modeling, control principles, data collection, and visual display. The applicability of the proposed framework is validated through a case study on optical fiber damage and recovery.
IET GENERATION TRANSMISSION & DISTRIBUTION
(2023)
Article
Automation & Control Systems
Xiaoran Dai, Guo-Ping Liu, Qijun Deng, Wenshan Hu, Pan Sun
Summary: A distributed cooperative control scheme is proposed for modular converters in ultra-large ship degaussing systems to improve magnetic stealth capability. Consensus and stability of the system are analyzed, and tailored controller design guidelines are presented. Simulation and experimentation confirm the efficacy of the control method.
ASIAN JOURNAL OF CONTROL
(2023)
Article
Thermodynamics
Xiaoran Dai, Guo-Ping Liu, Wenshan Hu
Summary: Renewable wind power plays a growing role in the smart grid. Wind power forecasting is important due to the intermittent and fluctuating nature of wind. This paper proposes a self-attention-based neural network model for online learning, which captures the temporal relations in power sequences.
Article
Engineering, Electrical & Electronic
Zhongcheng Lei, Hong Zhou, Wenshan Hu, Guo-Ping Liu
IEEE INDUSTRIAL ELECTRONICS MAGAZINE
(2023)
Article
Engineering, Electrical & Electronic
Yi Yu, Guo-Ping Liu, Wenshan Hu
Summary: This paper proposes a distributed predictive secure control method based on blockchain protocol to address the communication constraints and cyber attacks in DC microgrids. Experimental tests on a PV-based DC microgrid hardware system demonstrate the effectiveness of the proposed control strategy.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Engineering, Electrical & Electronic
Yi Yu, Guo-Ping Liu, Wenshan Hu
Summary: This paper focuses on the voltage tracking problem in DC microgrids with communication delays and packet losses. A coupled discrete microgrid model is developed to accurately compensate for these communication constraints. The proposed consensus-based proportional-integral predictive control strategy actively compensates for delays and dropouts. Sufficient and necessary conditions for voltage tracking are given, as well as stability and convergence analysis of the closed-loop microgrid system.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Engineering, Electrical & Electronic
Zhifan Li, Qijun Deng, Fengwei Chen, Pan Sun, Jiangtao Liu, Wenshan Hu, Hong Zhou
Summary: This article proposes a method of input design for wireless power transfer (WPT) systems based on receding horizon D-optimization. The system's dynamic behavior is characterized by a discrete-time, single-input, single-output (SISO) model, and the model parameters are estimated using a recursive least-squares (RLS) method. The excitation signal of the system is designed based on receding horizon D-optimization to improve the quality of parameter estimates. The sequential quadratic programming (SQP) method is employed to solve the receding horizon D-optimization for improving convergence and efficiency of the input design process. Numerical and experimental results demonstrate the effectiveness of the proposed method.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Computer Science, Theory & Methods
Zhongcheng Lei, Hong Zhou, Wenshan Hu, Guo-Ping Liu
Summary: This paper explores a novel system constructed based on front-end and back-end separation, which allows concurrent interactive experiments for multiple users, enabling massive access to virtual experimentation and avoiding the need for advance booking or queuing.
FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE
(2023)
Article
Engineering, Biomedical
Jiahao Wu, Taowang Wang, Huanhuan Guo, Yaqing Wang, Dezhao Guo, Bo Lu, Ziyi Wang, Fangxun Zhong, Hesheng Wang, Jiangjing Yuan, Yuhong Li, Tak Hong Cheung, Yudong Wang, Yun-hui Liu
Summary: To address the problem of declining performance over time with manual uterine manipulation during minimally invasive gynecologic surgery, we propose a novel uterine manipulation robot that consists of a 3-DoF remote center of motion (RCM) mechanism and a 3-DoF manipulation rod. This robot allows for tireless, stable, and safer manipulation in place of a human assistant. Laboratory experiments have shown the mechanical accuracy of the RCM mechanism and the maximum load of the manipulation rod, and feasibility has been demonstrated through various tests and clinical trials.
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2023)
Article
Automation & Control Systems
Yi Yu, Guo-Ping Liu, Wenshan Hu
Summary: This article focuses on the security control of discrete-time linear cyberphysical systems against denial-of-service attacks. A multichannel network is used to enhance the system's resistance to damage and attacks. The interaction process between the signal sender and the malicious adversary is formulated as a zero-sum stochastic game, and the optimal strategies for attackers and defenders are derived with the help of a learning algorithm. A resilient controller based on Kalman filtering is proposed for the CPS driven by the obtained decision-making strategies.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Zhongcheng Lei, Hong Zhou, Xiaoran Dai, Wenshan Hu, Guo-Ping Liu
Summary: This paper discusses the design and implementation of a digital twin DC-DC converter for monitoring and control. The results show that the digital twin can dynamically track the converter, detect and replace faulty controllers in real time.
NATURE COMMUNICATIONS
(2023)
Article
Automation & Control Systems
Hui Xiao, Wenshan Hu, Hong Zhou, Guo-Ping Liu
Summary: This paper proposes a prediction-based approach for power consumption monitoring, which accurately reveals the transparent relationships between the output and input parameters by utilizing an interpretable data-driven model and a networked predictive method. Through practical applications in an aluminum manufacturing company located in Guangdong Province, it is demonstrated that this approach is feasible and applicable.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Haitang Liu, Yuanteng Mei, Hong Zhou, Wenshan Hu, Qijun Deng, Xingran Gao, Li Fang
Summary: This letter presents a compact and efficient wireless motor drive using a self-lock circuit and timing control method. It allows for regulating the rotational direction of the motor at the transmitter side and employs a common resonance topology for soft switching implementation. The adoption of a self-lock circuit at the receiver side simplifies the system structure, and a 180-W prototype demonstrates effective operation with up to 88% transmission efficiency.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
