What is it about?
It has been believed that the voltage wave of SMPC consists of many harmonic waves. This idea should be denied because the switching voltage shape is formed by the charge/discharge action of SEMW generated by the switching device. When the SEMW theory is used, the electromagnetic analysis of the transient phenomenon will become easy and accurate.
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Why is it important?
SEMW theory which was developed by fusing the semiconductor physics, nonlinear undulation physics, and the electromagnetic wave physics is the basic theory of the switching mode circuit (SMC) including SMPC. When the SEMW theory is used, the electromagnetic analysis of SMPC becomes possible by using only parameters pursuant to Physics without using the equivalent AC circuit which is formed by the arbitrary idea. The low impedance lossy line (LILL) and the matched impedance lossy line (MILL) were developed based on the SEMW theory. LILL is effective for suppressing the electromagnetic noise and the spike on the non-fluctuating power line, and the MILL is effective on the fluctuating line.
Perspectives
I hope that this article will help you realize that the idea that large amplitude transistors generate many harmonics, which has long been believed by electrical circuit engineers, is incorrect. We believe that the root cause of this is that the electromagnetic wave theory in electromagnetic physics is limited to linear waves. By considering that solitons in nonlinear wave physics are excited as electromagnetic waves every time a large-amplitude transistor switches, it becomes possible to analyze switching mode circuits, including switching power supply circuits, in detail and easily from both the electromagnetic wave and voltage/current perspectives. Since solitary electromagnetic waves are expressed by a wave equation on the time axis, no microwave measuring instrument is required for waveform analysis. We hope that many engineers and researchers will understand and utilize the solitary electromagnetic wave theory and the LILL and MILL technologies that were born from it. We also plan to commercialize passive components using LILL and MILL technologies in the near future, so please look forward to them.
Ph.D Hirokazu Toya
ICAST, Inc.
Read the Original
This page is a summary of: Current Approaches in Engineering Research and Technology Vol. 7, August 2024, Sciencedomain International,
DOI: 10.9734/bpi/caert/v7.
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