Investigation of Transients in a Nonlinear a Mathematical Analog Machine MN-7

Abstract

When an unloaded transformer is switched on through the capacitors of the CPC longitudinal compensation unit, undamped resonant oscillations can occur in the circuit. The frequency of these oscillations is usually 1/3 of the mains frequency (in case of subharmonic resonance) or equal to the mains frequency (in case of voltage ferroresonance). Resonant oscillations are known to be accompanied by a sharp increase in transformer magnetizing current and overvoltages both across the CPC itself and across the transformer ...

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