Performance Investigation of an Impulse Power Supply for High Voltage Application

An Impulse power supply has been designed and simulates in order to feed the primary of a high-frequency transformer. The Impulse power supply is based on a series load resonant topology and uses IGTBs as switching devices. The device is capable of charging a 0.1 muF capacitor up to 5 kV in which accounts for a charging power of 5 kJ/s. The required charging voltage, together with the constraint of the charging time, translates into a required maximum power of 10 kW reduced in this initial version to 5 kW. The difficulty to reliably control such a power at the high-voltage side practically forbids any approach featuring a more or less stabilized DC high-voltage to be generated from a conventional 50 Hz transformer through rectification. Instead, it is more attractive to utilize a fuzzy logic control on high-frequency converter performing the regulation at the low-voltage side of its step-up transformer and charging the primary capacitor with high voltage pulses.