Title :
A 12 kV solid state high voltage pulse generator for a bench top PEF machine
Author :
Wang, Changjiang ; Zhang, Q.H. ; Streaker, Charles
Author_Institution :
Dept. of Food Sci. & Technol., Ohio State Univ., Columbus, OH, USA
Abstract :
High voltage pulsed electric field (PEF) is increasingly used for nonthermal food processes. This paper presents a design of an IGBT based 12 kV solid state high voltage pulse generator. A simple main circuit topology is employed in this pulse generator to reduce the cost and meanwhile still to meet specified requirements for PEF food processing. Intelligent IGBT modules, rated 1200 V and 1200 A, are used as power switches in the inverter circuit. A sophisticated grounding system is implemented to solve EMI caused by high integration of the equipment. In order to shape output pulse voltage wave, a dedicated DC bus for the inverter is developed to minimize stray inductance in the current loops. Experimental results are shown in this paper
Keywords :
DC-AC power convertors; bipolar transistor switches; electric fields; insulated gate bipolar transistors; invertors; power semiconductor switches; pulse generators; pulsed power supplies; pulsed power switches; switching circuits; 12 kV; 1200 A; 1200 V; EMI; IGBT; bench top PEF machine; circuit topology; current loops; grounding system; inverter circuit; nonthermal food processes; power switches; pulsed electric field; solid-state high-voltage pulse generator; stray inductance; Circuit topology; Costs; Electromagnetic interference; Grounding; Insulated gate bipolar transistors; Inverters; Pulse generation; Shape; Solid state circuits; Voltage;
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
DOI :
10.1109/IPEMC.2000.883047
