A Bipolar High Voltage Pulsed Power Converter using Switched-capacitors Multiplier

Requests for production of high voltage pulses have increased recently. Traditional pulsed power converters suffer from high number of switching components and high amplitude of input voltage. Voltage multipliers are introduced as alternative to generate high voltage pulses with lower input voltage sources. This paper presents a pulsed power inverter based on switched-capacitors multiplier technology with low input voltage sources. The high output voltage can be achieved at a bipolar waveform with a flexible switching frequency. This topology consists of a voltage multiplier based on H-bridge cells and a bipolar Marx topology. Due to application of voltage multiplier at this converter, input DC voltage is boosted to a certain amount and then it will be converted to a high voltage pulse and therefore, number of circuit components decrease to a certain amount in comparison with other power electronics-based topologies. As the main constraint of this circuit is using two switches with high voltage stress, the main application of proposed pulse generator is in the applications with low voltage DC sources. Proposed structure can generate narrow pulses combined with wide pulses as well. Experimental results with TMS320F28335 processor are obtained to verify the analysis.