Wireless Power Transfer

JMAG makes it possible to carry out investigations ranging from basic RLC analyses to efficiencypredictions. To determine the efficiency of a wireless power transfer design, you must analyze the power transfer as a function of position and angle. This can be done quickly in JMAG using the parametric analysis tool. This tool will not only predict optimal positioning, but it will also help develop a robust and reliable design.

Evaluation Items

Self-inductance, mutual inductance, induction voltage, load current, power, copper loss, iron loss, transmission efficiency, temperature distribution

Case Studies

Power Transmission Efficiency

In the electromagnetic induction-type wireless power supply, magnetic flux linking to the upper power-receiving side reduces due to positional misalignment. A decrease in flux linkage causes a reduction in the mutual inductance between coils. From this the resonant frequency determined by the inductance and the capacitor is shifted, and transmission efficiency decreases. Also, when the voltage of the power-receiving side coil is constant, the input voltage on the power supply side changes, and the supply power itself reduces.




Sort condition
Newest first
Oldest first
Views
    • White Papers

    [W-SE-73] Influence of Element Shapes Near the Coil on Convergence

    Mesh is essential for the accuracy and convergence of iterative calculations such as ICCG in the finite element method.

    27 Mar 2019

    • JMAG Users Conference Proceedings

    Optimum Design of Wireless Power Transfer Coils for EVs Calculated by JMAG

    Toshiyuki Fujita, Technova Inc.

    7 Mar 2019

    • JMAG Users Conference Proceedings

    Effects of the Aluminum Coil on the WPT System

    Atsushi Ogasahara, Tabuchi Electric co., ltd.

    • Application Catalog

    224 – Wireless Power Transfer Device Stray Loss Analysis

    In this example, an example is presented investigating by using electromagnetic field analysis whether stray loss can be suppressed using an aluminum shield.

    18 Feb 2019

    • Application Catalog

    199 – Efficiency Analysis of Wireless Power Transfer via Electromagnetic Induction Method using Resonance Circuits

    This example presents, an electromagnetic induction-type wireless power supply system using an excitation circuit positioned with a parallel resonance condenser on the receiving end, and a series res…

    9 Mar 2018

    • Application Catalog

    196 – Analysis of coil stray capacitance

    This document introduces target on the helical coil, changes the distance between windings, and obtains stray capacitance that occurs in each coil.

    • Application Catalog

    190 – Arrangement Optimization of Wireless Power Transfer System

    This document introduces the procedure in obtaining the optimum solution for geometries of transmission coils (angle that defines position) for simple magnetic resonance wireless power transfer syste…

    8 Mar 2018

    • JMAG Users Conference Proceedings

    Magnetic Analysis for Wireless Power Transfer via Magnetic Resonant Coupling – Effect of Foreign Object –

    Takehiro Imura, The University of Tokyo

    14 Feb 2018

    • JMAG Users Conference Proceedings

    Introduction to the Difference between Electromagnetic Induction and Magnetic Resonance Coupling

    Takehiro Imura, Department of Electrical Engineering & Information Systems, School of Engineering, The University of Tokyo

    15 Feb 2016

    • JMAG Users Conference Proceedings

    Development of a wireless power transfer technology and electromagnetic field analysis

    Tomio Yasuda, New Technology Development Department, Technova Inc.

    • JMAG Users Conference Proceedings

    Electromagnetic design method of wireless charging coil mounted under a vehicle

    Hiroaki Yuasa, Nobuhiro Kibudera, BR Electric Vehicle・Charge System Development Dept, TOYOTA MOTOR CORPORATION, Norihito Kimura, Nippon Soken, Inc.

    • JMAG Users Conference Proceedings

    Development and Performance Evaluation of a Contactless Inductive Power Supply (IPS) System for Electric-driven Vehicles

    Yushi Kamiya,Waseda University

    10 Dec 2009

    • Application Catalog

    139 – Power Transmission Analysis Using Magnetic Resonance Phenomena

    This Application Note presents how to confirm the power transmission efficiency and the magnetic flux density distribution.

    3 Dec 2009

    • Application Catalog

    113 – Power Transmission Analysis of a Wireless Power Transfer System with Opposing Cores

    This Application Note presents how to obtain the power transmission efficiency when the feeder wire’s position is moved in both the horizontal and vertical directions from a reference position, and h…

    14 Apr 2009

    • JMAG Users Conference Proceedings

    Efficiency improvement of non-contact power supply systems

    Hiroyasu Tomita, MURATA MACHINERY,LTD.

    12 Dec 2008

    • Application Catalog

    86 – Power Transmission Analysis of a Wireless Power Transfer System

    This Application Note presents how to obtain the power transmission efficiency when the feeder wire’s position is moved in both the horizontal and vertical directions from a reference position, and h…

    30 Jan 2008

Search Filter