Comparison of Simulation Results with Experiment Needle Probe Eddy Current Measurements
Date Issued
2015
Date
2015
Author(s)
Tsai, Chia-Yun
Abstract
Abstract This paper investigates the effects of eddy current in the silicon steel. The eddy current constitutes a major portion of the core loss in the transformer and the motor operation. It is desirable for the designers to understand the amount and the distribution of the eddy current within a silicon steel under operation. Eddy current is also known to be very hard to measure. This paper first investigates the eddy current distribution using ANSYS simulation. The simulations enable us to study the effect of holes drilled through the silicon steel test specimen. The research further measures the eddy current using the needle probe approach. The measured current is compared with the magnetic flux measured off an Asymmetric Magnetic Resistive sensor to compute the local hysteresis loop.
Subjects
Eddy current
Core loss
Needle probe measurement
Type
thesis