Theory and Analysis of a Parametrically Excited Passive Power Converter

A static power converter operating on the principle of parametric excitation is analyzed. The energy transfer from the input to the output takes place via the magnetic field without mutually coupling the windings. The transfer is accomplished by affecting the reluctance of the secondary winding. Thus output becomes available which is essentially independent of the waveform of the excitation; transients and noise are filtered. The characteristics of the converter are derived in a qualitative manner, and the outstanding characteristics of the device such as voltage regulations, under-and over- voltage protection, load dependence. and inherent protection against overload are explained.