Abstract
For the time being, high-freqency switching technique is widely
used in various applications. Therefore, the techniques of switching
method of devices and designing of high-frequency transformers have
become one of the main research subjects in power eletronic area.
The main objective of this thesis is discussing the characteristics of
core materials which are used for high-frequency transformers. In
experimental, an integrator has been used to obtain the waveforms of
magnetic flux. In cooperating with excitating current, these waveforms
are transformed into hysteresis curves. The relationships between length
of airgap and performance of transformer are also investigated
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