Design of PFN Based Bipolar Marx Generator

Abstract

Pulsed power technology is widely used in many fields like medical, military, environmental protection, food preservation, etc. One of the important applications of Pulsed power in the Medical field is in Electroporation. In irreversible Electroporation(IRE) high voltage pulses are applied across cancer cells which kills the cells and hence can be used to destroy the tumour/ cancerous tissue. For irreversible electroporation , Unipolar or Bipolar High Voltage Pulses are used. Bipolar high voltage pulses are preferred for IRE because they can target specific tissue or cells. Also it is found that bipolar pulses don’t cause muscle contraction. This paper is regarding the designing of a Marx generator fused with pulse forming network (PFN) to generate high voltage bipolar pulses. The designed generator will have the capability of producing pulses with a voltage up to ±3kV, pulse width of 500ns, and repetition rate of 1 KHz for resistive load of 1008!. The input voltage is 1kV DC. Given design is of six stages and five sections.