Influence Of Core Loss Research Articles

High voltage pulse generation using magnetic pulse compression

Abstract The paper presents an overview of a method of nanosecond-scale high voltage pulse generation using magnetic compression circuits. High voltage (up to 18 kV) short pulses (up to 1.4 μs) were used for Pulsed Corona Discharge generation. In addition, the control signal of parallel connection of IGBT and MOSFET power transistor influence on system losses is discussed. For a given system topology, an influence of core losses on overall pulse generator efficiency is analysed.

Steady-state operation of the push-pull saturable-core transformer with resistive load

The widespread use of the saturable-core transformer as a push-pull magnetic amplifier in servomechanism systems is well known. This amplifier is analyzed by the methods of Storm1 to obtain the basic performance equations and to gain a broad insight into the circuit operation. The analysis is predicated on the free flow of even harmonics, that is, low control-circuit impedance, and deals with the resistive load case. Under these conditions two modes of operation are found; further, the influence of core loss and primary resistance on gain becomes apparent. From this analysis ideal graphs are prepared which show the nature of circuit operation for changes in signal, line voltage, frequency, and loading. The resulting expressions for gain, together with the boundaries of circuit operation, form a useful background in component design, quality control, and system analysis.