Hi ! I made multi-turn air cored coil myself. I know that the coil is in the magnetic field that changes 8Hz frequency, magnetic field density is 0.5 T. How mathematically calculate induced voltage in a coil ? Can't find any information with equations.. Thanks !
This is not necessarily easy to measure, or to calculate.
Current is induced in the inductor. It can only flow if the inductor sees finite impedance. The developed voltage is generated by the inductor. The inductor produces whatever voltage is necessary, in order to ensure Ampere flow through the impedance.
The only time you can measure this voltage directly, is when all external voltages are zero.
I know that is easier to measure. I measured, that Voc @8Hz is 880mV ( 1,76 V peak to peak) . I need to make calculations and compare that with measured value..
Here is my generator:
Every second magnet is reversed direction, so when motor speed is 1 rotation per second, we have 8Hz magnetic flux change. So i want to calculate induced voltage in SINGLE coil (in the picture there are 5) . I measured that the voltage is about 880mV. I need to show that with calculation..
It won't for a homogenous 0.5T field. But looking at the photo, the field is far from being homogenous. And neither sinusoidal in time.
As mentioned in your previous thread https://www.edaboard.com/threads/328374/, it's a 3D AC magnetics problem that can't be easily simulated. The calcuculation in post #2 gives a best at ballpark figure.