scholarly journals Numerical and Circuit Modeling of the Low-Power Periodic WPT Systems

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2651 ◽  
Author(s):  
Adam Steckiewicz ◽  
Jacek Maciej Stankiewicz ◽  
Agnieszka Choroszucho
Keyword(s):  
Numerical Model ◽  
Low Power ◽  
Three Dimensional ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Wireless Power ◽  
The Finite Element Method ◽  
Charging System ◽  
Analytical Formulae ◽  
Similar Accuracy

This article presents a method for analysis of the low-power periodic Wireless Power Transfer (WPT) system, using field and circuit models. A three-dimensional numerical model of multi-segment charging system, with periodic boundary conditions and current sheet approximation was solved by using the finite element method (FEM) and discussed. An equivalent circuit model of periodic WPT system was proposed, and required lumped parameters were obtained, utilizing analytical formulae. Mathematical formulations were complemented by analysis of some geometrical variants, where transmitting and receiving coils with different sizes and numbers of turns were considered. The results indicated that the proposed circuit model was able to achieve similar accuracy as the numerical model. However, the complexity of model and analysis were significantly reduced.

scholarly journals A Copper Foil Electromagnetic Coupler and Its Wireless Power Transfer System without Compensation

2021 ◽  
Vol 12 (4) ◽  
pp. 191
Author(s):  
Xueying Wu ◽  
Mingxuan Mao
Keyword(s):  
Copper Foil ◽  
Equivalent Circuit Model ◽  
Wireless Power Transfer ◽  
Circuit Model ◽  
Transfer System ◽  
Coupling Theory ◽  
Power Transfer ◽  
Wireless Power ◽  
Electrical Parameters ◽  
Wireless Power Transfer System

This paper proposes a copper foil electromagnetic coupler integrating inductance and capacitance and its wireless power transfer (WPT) system without additional compensation structure. Firstly, the equivalent circuit model of the integrated electromagnetic coupler is established, and the circuit model is simplified based on the circuit theory and mutual inductance coupling theory. The self-compensating characteristics of the coupler are utilized to analyze and design the relation between electrical parameters of the system, and the basic conditions of full resonance working of the system are given. The system’s performance is verified by simulation.

scholarly journals Equivalent Circuit Model of Novel Solid Rotor Induction Motor with Toroidal Winding Applying Composite Multilayer Theory

2019 ◽  
Vol 9 (16) ◽  
pp. 3288
Author(s):  
Haichao Feng ◽  
Xu Cui ◽  
Jikai Si ◽  
Caixia Gao ◽  
Yihua Hu
Keyword(s):  
Finite Element ◽  
Equivalent Circuit ◽  
Induction Motor ◽  
Structural Parameters ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Operating Principle ◽  
The Finite Element Method ◽  
Stator Current ◽  
Electromagnetic Performance

In this work, a novel solid rotor induction motor with toroidal winding (N-TWSRIM) is proposed and its structure and main structural parameters are given. The operating principle is analyzed in accordance with the movement of the armature magnetic field at different times. An equivalent circuit model (ECM) of the N-TWSRIM is established based on composite multilayer theory to analyze and calculate motor performance quickly and accurately. Electromagnetic performance, which includes output torque, stator current, and power factor under different slip, is calculated with ECM, and its results are compared with those of the finite element method. A prototype of the N-TWSRIM is built and experimented on to validate the correctness of the operating principle and ECM. Experimental results on stator current and torque are consistent with the finite element and analytical results.

scholarly journals On the Asymptotic Behavior and Parameter Estimation of a Double-Sided LCC-Compensated Wireless Power Transfer System

Machines ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 287
Author(s):  
Feng-Rung Hu ◽  
Jia-Sheng Hu
Keyword(s):  
Parameter Estimation ◽  
Wireless Power Transfer ◽  
Circuit Model ◽  
Current Status ◽  
Transfer System ◽  
Wireless Charging ◽  
Power Transfer ◽  
Wireless Power ◽  
Charging System ◽  
Wireless Power Transfer System

This study investigates the statistic behavior and parameter estimation problems of a double-sided, LCC-compensated, wireless power transfer system. Based on the commonly used wireless charging circuit model, this study proposes a five-step parameter estimation method, which is applicable to automotive static wireless charging systems. The eight parameters in the circuit model of this study are the most important key components of the wireless charging system. The study also found that, under certain conditions, the statistic mode of wireless charging systems has a specific distribution. However, the current status of these eight components for wireless charging of electric vehicles will have complex parameter drift problems. These drift problems will deteriorate the performance of the vehicle power systems. This study probes these factors and proposes some related mathematical theories. The noted factors can be applied to the analysis of the wireless charging system and provide alternative solutions to explain the deteriorations from coil misalignments. Both simulations and experiments are given to show the evaluated issues of the proposed study.

Compact transition enabled broadband propagation of spoof surface plasmon polaritons based on the equivalent circuit model

2022 ◽  
Author(s):  
Dawei Zhang ◽  
Xin Liu ◽  
Yaxiu Sun ◽  
Kuang Zhang ◽  
Qun Wu ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Optimization Design ◽  
High Efficiency ◽  
Three Dimensional ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Equivalent Model ◽  
3D Simulations ◽  
Impedance Characteristics ◽  
Low Pass

Abstract In this paper, a strategy to develop a compact transition of the spoof surface plasmon polariton (SSPP) transmission line (TL) is proposed. First, an equivalent distributed circuit model is employed for the theoretical analysis and optimization design of the SSPP unit. The mapping relation between the unit performance and the geometric parameters is deduced from the transmission matrix. The calculated results are compared with the numerical ones from the three-dimensional (3D) simulations for validation. Then, a compact transition (only 0.26λg) is built with only two matching units and a tapered strip through optimizations. The optimizations are implemented with the circuit simulations based on the equivalent model, which can remarkably save time in comparison with the 3D simulations. The transition principle is also explained by quantitatively extracting the dispersion properties and impedance characteristics. Finally, a prototype of the proposed SSPP TL is fabricated and measured for demonstration. The measured operating band (0-7.7 GHz) is almost up to the cut-off frequency (about 8 GHz), which remains the inherent broadband low-pass transmission characteristics. Meanwhile, the measured in-band return loss is almost higher than 10dB, which verifies the high-efficiency propagation. This work can pave the way for building up a new SSPP-based framework of microwave circuits.

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