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.
Self-inductance, mutual inductance, induction voltage, load current, power, copper loss, iron loss, transmission efficiency, temperature distribution
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.
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 resonance condenser on the transmission end will be a…
This document introduces target on the helical coil, changes the distance between windings, and obtains stray capacitance that occurs in each coil.
In this example, an example is presented investigating by using electromagnetic field analysis whether stray loss can be suppressed using an aluminum shield.
Mesh is essential for the accuracy and convergence of iterative calculations such as ICCG in the finite element method.
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 system. Even if you are a user of applications excludin…
Takehiro Imura, The University of Tokyo
Takehiro Imura, Department of Electrical Engineering & Information Systems, School of Engineering, The University of Tokyo
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 how to display the flow of magnetic flux.