Development of a High-Voltage Pulsed Electric Field Sterilization Power Supply Using a New Topology Circuit

Bo Zhu (), He Su, Zhihan Fang, Guoyan Wu and Xinlao Wei
Additional contact information
Bo Zhu: College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
He Su: College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
Zhihan Fang: College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
Guoyan Wu: College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
Xinlao Wei: College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China

Energies, 2023, vol. 16, issue 6, 1-13

Abstract: Traditional thermal sterilization technology is easy to implement and safe, but it will destroy food nutrition and change food taste. Therefore, people began to turn their attention to non-thermal sterilization. High-voltage pulsed electric field sterilization technology is one of them; it has attracted much attention because of its high efficiency and little damage to food. Different types of loads will cause serious trailing of the pulse falling edge. In view of this situation, this paper proposes a new topology circuit that combines a solid-state switch with a half-bridge Marx generator. It can be used for high-voltage pulsed electric field sterilization. By improving the structure of the classical Marx circuit, the high-voltage pulse power supply of the new topology circuit has the characteristics of steep rising edge and short falling edge delay; does not require isolation inductance or isolation resistance, which solves the isolation problem between the DC charging power supply and the high-voltage terminal; and has a good voltage-clamping function and load adaptability. The working process of the topology circuit under resistive, capacitive and inductive loads and the voltage clamping effect when the solid-state switch does not work properly in the discharge process are analyzed in detail. The power supply is composed of an adjustable DC power supply, five-stage half-bridge Marx generator and control protection circuit. A field programmable gate array (FPGA) is used as the controller to generate control signals, and optical fiber isolation is used to provide control signals for the main loop. The power supply can output a high-voltage square wave pulse with a voltage amplitude of 10 kV, maximum pulse number of 1000 per second, maximum pulse width of 20 μs, pulse rise time of smaller than 300 ns and short pulse drop time, and the repeated voltage amplitude, frequency and pulse width are adjustable, which can meet the requirements of a high-voltage pulse sterilization experiment.

Keywords: high-voltage pulse power supply; pulsed electric field; Marx generator; all-solid-state; field programmable gate array; liquid sterilization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/6/2741/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/6/2741/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:6:p:2741-:d:1098145

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().