Multiple Objective-Based Optimal Energy Distribution for Wireless Power Transfer

Zhang, Zhen; Pang, Hongliang; Tong, R.; Ai, W.; Chang, Sang‐Yoon; Wang, J.

doi:10.1109/tmag.2018.2832092

Cited by 11 publications

(3 citation statements)

References 15 publications

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“…Equation (22) shows that, for a dual-load PT-WPT system with known system parameters, the power and transfer efficiency of different loads only relate to the coupling coefficients k 1 and k 2 . Therefore, before discussing the power distribution under different coupling situations, the relationship between the coupling coefficient and the coils' position should be obtained first.…”

Section: Power Distribution Under Different Coupling Situationsmentioning

confidence: 99%

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Circuit Model and Analysis of Multi-Load Wireless Power Transfer System Based on Parity-Time Symmetry

et al. 2020

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In the multi-load wireless power transfer (WPT) system, the output power and transfer efficiency will drop significantly with the change of distance between transmitter and receiver. Power distribution among multiple loads is also a major challenge. In order to solve these problems, a novel multi-load WPT system based on parity–time symmetry (PT-WPT) is proposed in this paper. Firstly, the multi-load PT-WPT system is modeled based on the circuit model. Then, the transmission characteristics of the multi-load PT-WPT system are analyzed. It is found that constant output power with constant transfer efficiency can be maintained against the variation of coupling coefficient, and the power distribution relationship among loads is only related to the coupling coefficient. Further, power distribution under different coupling situations is analyzed in detail to meet different power demands. Finally, taking a dual-load PT-WPT system as an example, the system parameters are designed and the circuit simulation is carried out. The simulation results are consistent with the theoretical analysis, which shows that PT symmetry can be applied to the multi-load WPT system to achieve constant output power, constant transfer efficiency, and power distribution simultaneously.

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Section: Power Distribution Under Different Coupling Situationsmentioning

confidence: 99%

“…So, the coupling coefficients k 1 and k 2 can be calculated according to Equation (23) or by scanning Figure 6b. According to Equation (22), the output power of Load 1 and Load 2 can be obtained:…”

Section: Power Distribution Under Different Coupling Situationsmentioning

confidence: 99%

Circuit Model and Analysis of Multi-Load Wireless Power Transfer System Based on Parity-Time Symmetry

et al. 2020

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“…Therefore, MEU technology has been increasingly utilized in a range of applications in recent years such as drone charging, power supply of multiple mobile electronic devices, and electric vehicle charging [1]- [5]. The main advantages of this method include: 1) large power transfer capacity; 2) high misalignment tolerance; 3) flexible power output; 4) high system efficiency (under some condition [15]); 5) low voltage and current stress on a single excitation unit [6]- [9].…”

Section: Introductionmentioning

confidence: 99%

Cooperative Control for Multi-Excitation Units WPT System With Multiple Coupling Parameter Identification and Area Adaptation

Dai

Jiang

et al. 2020

IEEE Access

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In a multiple excitation unit wireless power transfer system, power control flexibility is a critical feature. To develop a system with environmental sensing capability and a smart power distribution strategy, a cooperative control method is proposed for the excitation units. A multiple coupling coefficient identification method was developed by utilizing the DC information of each excitation unit. Furthermore, a bi-operation mode with adaptive area division is proposed to achieve maximum efficiency in the optimum coupling area and to satisfy the fundamental power requirement for a weak coupling area. In the identification and control implementation process, this method is easy to implement and the response speed can be guaranteed because only the DC input current and the duty cycle of the DC regulator information are required. In addition, the proposed approach was evaluated based on experimental analysis.

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Control Scheme for Multiple‐pickupWPTSystem

2022

Wireless Power Transfer: Principles and Applications

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Multiple Objective-Based Optimal Energy Distribution for Wireless Power Transfer

Cited by 11 publications

References 15 publications

Circuit Model and Analysis of Multi-Load Wireless Power Transfer System Based on Parity-Time Symmetry

Circuit Model and Analysis of Multi-Load Wireless Power Transfer System Based on Parity-Time Symmetry

Cooperative Control for Multi-Excitation Units WPT System With Multiple Coupling Parameter Identification and Area Adaptation

Control Scheme for Multiple‐pickupWPTSystem

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