A High-Voltage Solid-State Switch Based on Series Connection of IGBTs for PEF Applications
作者： Xiaotian Chen , Lin Yu , Tingting Jiang , Hongping Tian , Kang Huang
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摘要: Pulsed electric field (PEF) technology is a promising nonthermal processing techniques that can be utilized to inactivate microorganisms in liquid food with high-voltage PEF. Herein, solid-state switch consisting of 64 insulated gate bipolar transistors (IGBTs) connected series was designed and developed for the PEF treatment. Regarding unbalanced sharing voltage series-connected IGBTs, resistor–capacitor–diode snubber circuit specifically used investigated terms model parameters. Furthermore, using drivers optic fiber, driving protection were validated. A 50-kV isolation level power supply built order provide 16 independent IGBT stacks 24 V each. The results show works adequately delay time 380 ns 35.8-kV 44.8-A current capacity. Moreover, response short-circuit acceptable as well reaction under $7~\mu \text{s}$ . In conclusion, treatment performs within set parameters ready pilot-scale capability.
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