Accurate Modeling, Design, and Load Estimation of LCC-S Based WPT System With a Wide Range of Load

Article Engineering, Electrical & Electronic

A Detuning-Repeater-Based Dynamic Wireless Charging System With Quasi-Constant Output Power and Reduced Inverter Count

Wenjing Xiong et al.

Summary: This article proposes a detuning-repeater-based dynamic wireless power transfer (DWPT) system, which uses passive repeater coils and a detuning method to achieve a relatively constant output power and reduce the number of inverters.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2023)

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Article Engineering, Electrical & Electronic

Single-Stage Active Rectifier With Wide Impedance Conversion Ratio Range for Inductive Power Transfer System Delivering Constant Power

Chunwei Ma et al.

Summary: This article proposes a single-stage active rectifier (SSAR) that combines an interleaved buck converter with a full-bridge active rectifier (FBAR) to solve the problem of a wider range of the battery's equivalent resistance in constant power (CP) charging mode. Compared with the traditional FBAR, the SSAR extends the resistance conversion ratio range and reduces the output current ripple due to the interleaved operation. A novel optimal phase angle control strategy is also proposed for the IPT system with the SSAR. An experimental prototype of 150W is provided to verify the effectiveness of the proposed rectifier.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2023)

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Article Engineering, Electrical & Electronic

Metal Object Detection With Detection Coils Perpendicular to Power Coils for Wireless Power Transfer Systems

Wenxing Zhong et al.

Summary: In this letter, a method for metal object detection (MOD) is proposed, using detection coils perpendicular to power coils. The theoretical voltage in the detection coils is zero when no metal object is present. However, when a metal object is placed on the Tx pad, it induces an eddy current, resulting in a voltage in the detection coils. This method is able to function well even with misalignments between the Tx and Rx pads, and does not require adjustments for different winding positions. The concept has been successfully validated through experimental results.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2023)

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Article Engineering, Electrical & Electronic

Synthesis and Analysis of Primary High-Order Compensation Topologies for Wireless Charging System Applying Sub-Harmonic Control

Xiaoqiang Wang et al.

Summary: This article explores the systematic synthesis of primary high-order compensation topology (PHCT) for wireless charging system and its applicability to subharmonic control (SHC). It reveals that four types of PHCTs are superior in performance when applied with SHC. Furthermore, experimental results on a prototype with jointly applying SHC and PHCT are examined.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2023)

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Article Automation & Control Systems

Passivity-Based PI Control for Receiver Side of Dynamic Wireless Charging System in Electric Vehicles

Jia Liu et al.

Summary: Dynamic wireless charging technology is an efficient and practical choice for extending the driving range and reducing battery pack size of electric vehicles (EVs). However, the rapid and large-scale variation of the coupling coefficient between transmitter and receiver coils leads to degradation of charging performance and affects the charging power and efficiency of the system. To address these issues, a dc-dc converter and a passivity-based proportional-integral control are added to improve the output power, efficiency, and performance against the rapidly changing coupling coefficient.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2022)

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Article Engineering, Multidisciplinary

Flexible Energy-Transfer Control of Dynamic Wireless Power Transfer System Based On Estimation of Load and Mutual Inductance

Shufan Li et al.

Summary: This article proposes an energy transfer control method based on the estimation of the load and mutual inductance of the segmented DWPT system. By studying the relation between the load and the reflected impedance of the primary side and tuning the parameters of the secondary-side LCC network, the energy transfer control is achieved and fast response characteristics are obtained.

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS (2022)

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Article Engineering, Multidisciplinary

Performance Analysis and Design of Frequency Controlled Series-Series Compensated Inductive Power Transfer System for Electric Vehicle Battery Charging

Kuseso Onai et al.

Summary: This article presents a new method for designing the coils of a series-series inductive power transfer system, considering the compensation network, battery charging profile, and system efficiency. The harmonic balance technique is used to derive the transient and steady-state models of the coil, and equations defining the possible frequency trajectories for the entire charging profile are derived. The redesign of the system with a reduced secondary inductance achieves high efficiency and zero voltage switching by operating close to the resonant frequency of the transmitter coil.

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS (2022)

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Article Engineering, Electrical & Electronic

Overall Loss Compensation and Optimization Control in Single-Stage Inductive Power Transfer Converter Delivering Constant Power

Fei Xu et al.

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)

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Article Engineering, Electrical & Electronic

Improving Wireless Power Transfer Efficiency With DC/DC Boost Charger by Multi-Sine Excitation at 5.8 GHz

M. Passafiume et al.

Summary: This work focuses on new design techniques for RF to dc converters in combination with commercial dc/dc converters, aiming to achieve efficient wireless power transfer. The study explores the impact of applying a multi-sine RF input signal on power transfer efficiency and utilizes source-pull optimization to maximize RF to dc energy conversion and current throughput. Experimental results demonstrate a 1.8-fold improvement compared to conventional designs at a frequency of 5.8 GHz.

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS (2022)

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Article Engineering, Electrical & Electronic

Pulse Density Modulation Based Mutual Inductance and Load Resistance Identification Method for Wireless Power Transfer System

Ruimin Dai et al.

Summary: This article proposes an identification method based on the pulse density modulation technique to estimate mutual inductance and load resistance in wireless power transfer systems. Experimental results show small relative errors and no impact on output power and efficiency during the identification process.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2022)

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Article Engineering, Electrical & Electronic

High-Efficiency WPT System for CC/CV Charging Based on Double-Half-Bridge Inverter Topology With Variable Inductors

Xiao Zhu et al.

Summary: This article proposes a new wireless power transfer system using a double-half-bridge inverter and variable inductors to improve charging efficiency. By adjusting the inductance of the variable inductors, the output voltage or current can be controlled, eliminating circulating current and achieving wide-range zero voltage switching operation. Experimental results show that the maximum efficiency of this method is 3.65% higher than traditional phase shift control.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2022)

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Review Engineering, Electrical & Electronic

Review and Comparative Analysis of Topologies and Control Methods in Dynamic Wireless Charging of Electric Vehicles

Anindya Chitta Bagchi et al.

Summary: Dynamic wireless power transfer (DWPT) systems are developed to address the range limitations and battery size requirements of electric vehicles (EVs). These systems require careful consideration of dynamic variations in coupling for power flow control. Despite advances in couplers, compensation, and converter topologies, challenges such as stability of control systems and lack of interoperability among different configurations remain significant obstacles in the commercialization of DWPT.

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS (2021)

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Proceedings Paper Energy & Fuels

Hybrid planar Litz coil optimization for phone wireless power transfer

Mario Ursino et al.

Summary: This study introduces an innovative receiver coil structure for wireless power charging for portable devices with thickness constraint, presenting and optimizing planar Litz structures with narrow profile, and testing the coil performances in alignment and misalignment conditions in a wireless power transfer system.

2021 THIRTY-SIXTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2021) (2021)

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Review Computer Science, Information Systems

A Review on UAV Wireless Charging: Fundamentals, Applications, Charging Techniques and Standards

Prithvi Krishna Chittoor et al.

Summary: Unmanned Aerial Vehicles (UAVs) are gaining popularity in various fields, especially in applications such as parcel delivery. The future of UAV charging faces important challenges and the need for non-contact multi-device charging techniques. Research explores the importance and future trends of UAV charging technology.

IEEE ACCESS (2021)

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Article Engineering, Electrical & Electronic

Load Parameter Joint Identification of Wireless Power Transfer System Based on the DC Input Current and Phase-Shift Angle

Yanjie Guo et al.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2020)

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Article Engineering, Electrical & Electronic

A Single-Stage Bidirectional Inductive Power Transfer System With Closed-Loop Current Control Strategy

Bharat Vardani et al.

IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION (2020)

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Proceedings Paper Energy & Fuels

Approximate Linearization of Rectifier Load in Wireless Power Transfer Systems

Yanjie Guo et al.

2020 IEEE PELS WORKSHOP ON EMERGING TECHNOLOGIES: WIRELESS POWER TRANSFER (WOW) (2020)

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Article Automation & Control Systems

Wireless Power Transfer-An Overview

Zhen Zhang et al.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2019)

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Review Green & Sustainable Science & Technology

A critical review on wireless charging for electric vehicles

Philip Machura et al.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2019)

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Article Engineering, Electrical & Electronic

A Novel Coil With High Misalignment Tolerance for Wireless Power Transfer

Yang Li et al.

IEEE TRANSACTIONS ON MAGNETICS (2019)

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Article Engineering, Electrical & Electronic

A New Wireless Power-Transfer Circuit for Retinal Prosthesis

Iman Abdali Mashhadi et al.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2019)

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Article Engineering, Electrical & Electronic

A Misalignment Tolerant IPT System With Intermediate Coils for Constant-Current Output

Ruikun Mai et al.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2019)

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Article Computer Science, Information Systems

The Load Estimation and Power Tracking Integrated Control Strategy for Dual-Sides Controlled LCC Compensated Wireless Charging System

Qiang Zhao et al.

IEEE ACCESS (2019)

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Article Automation & Control Systems

Rectifier Load Analysis for Electric Vehicle Wireless Charging System

Yanjie Guo et al.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2018)

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Article Engineering, Electrical & Electronic

Analysis of Output Current Characteristics for Higher Order Primary Compensation in Inductive Power Transfer Systems

Jia Hou et al.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2018)

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Article Engineering, Electrical & Electronic

System Modeling and Switching Control Strategy of Wireless Power Transfer System

Jinhai Jiang et al.

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS (2018)

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Article Engineering, Electrical & Electronic

Time-Domain Analysis of Voltage-Driven Series-Series Compensated Inductive Power Transfer Topology

Alireza Safaee et al.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2017)

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Article Automation & Control Systems

Wireless Power Transfer by Electric Field Resonance and Its Application in Dynamic Charging

Siqi Li et al.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2016)

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Article Automation & Control Systems

Integrated LCC Compensation Topology for Wireless Charger in Electric and Plug-in Electric Vehicles

Weihan Li et al.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2015)

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Article Engineering, Electrical & Electronic

A Double-Sided LCC Compensation Network and Its Tuning Method for Wireless Power Transfer

Siqi Li et al.

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY (2015)

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Article Engineering, Electrical & Electronic

Load Detection Model of Voltage-Fed Inductive Power Transfer System

Zhi-Hui Wang et al.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2013)

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Article Engineering, Electrical & Electronic

Inductive Power Transfer

Grant A. Covic et al.

PROCEEDINGS OF THE IEEE (2013)

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Article Engineering, Electrical & Electronic

The Circuit Theory Behind Coupled-Mode Magnetic Resonance-Based Wireless Power Transmission

Mehdi Kiani et al.

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS (2012)

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Article Automation & Control Systems

Maximizing Air Gap and Efficiency of Magnetic Resonant Coupling for Wireless Power Transfer Using Equivalent Circuit and Neumann Formula

Takehiro Imura et al.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2011)

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Accurate Modeling, Design, and Load Estimation of LCC-S Based WPT System With a Wide Range of Load

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