Analysis of the Stray Parameter in Multiple Secondary Windings Transformer of the PSM HV Pulse Power Supply

In order to protect the loads of the PSM high voltage pulse power supply,it is necessary to reduce the stored energy of the power supply system.The energy is mainly stored in the output filter and stray capacitances.The energy stored in filter can be calculated easily,so the stray parameters of the multiple secondary windings are important to the whole system,especially the stray capacitance.Some results have been got by simulation.We described the corresponding relation between the stray capacitance voltage and the output DC voltage,and presented the corresponding relation among the stored energy,stray capacitance and output voltage.The maximum value of the stray capacitances can be got from these relations.The multiple secondary windings transformers were developed and one PSM power supply unit was built.The results of the test show that the stray capacitance in the developed transformer can meet the design requirements of the system and the construction of the whole system is reasonable and feasible.