Coupled resonant circuit

Name: Coupled resonant circuit
Uploaded: 2021-02-09
Duration: T2045S
Channel: Milan Ćuković, Technische Universität Graz
Description: This is essentially an air core transformer. One coil is energized and the other coil is connected to the load. We are going to change the distance between coils and the AC voltage frequency. The task is to measure the transfer function.

QuickField simulation example

Example courtesy of Milan Ćuković.

This is essentially an air core transformer. One coil is energized and the other coil is connected to the load. We are going to change the distance between coils and the AC voltage frequency. The task is to measure the transfer function.

Problem Type
Axisymmetric problem of AC magnetics.

Geometry

Given
Copper electric conductivity 59.6 MS/m
Voltage source 5 V (r.m.s. value), frequency sweep f = 1.. 21 kHz

Task
Calculate the transfer function for different coil spacing ΔX and AC frequency f.

Solution
Voltage source is applied to the Coil #1. Coil #1 current and Coil #2 current magnitude and phase are measured.
The set of QuickField problems is automatically generated by the Label Mover tool.

Results
Magnetic field distribution and induced currents
Coupled resonant circuit

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