高电压技术2018，Vol.44Issue(8)：2464-2471,8.DOI:10.13336/j.1003-6520.hve.20180731005
基于阻尼系数的PEF系统输出方波波形特性影响因素
Influence Factors of PEF System Output Square Waveform Characteristics Based on Damping Coefficient
摘要
Abstract
High-voltage pulsed electric field technology is a new type of non-thermal food processing technology, of which the treatment performance is determined by the output pulse parameters. The relationship between the output waveform and the damping coefficient of bipolar square pulse PEF system was studied based on the IEEE pulse transformer equivalent parameter model. The effects of the load impedance and loop parasitic parameters on the system damping coefficient were studied. Theoretical and experimental results show that the damping coefficient of PEF system increases with the decrease of the load impedance, and the pulse rise time increases. Loop parasitic parameters increase the damping coefficient σrsys and then the pulse rise time. The RCD clamp circuit of the pulsed forming system changes the energy release channel of the system distribution parameters. When the σfsys decreases, the fall time of the output square pulse will increase. The experimental results prove that the system damping coefficient has an important effect on the output square waveform characteristics of PEF system, and relevant influence parameters should be considered to obtain an optimal square pulse.关键词
PEF/脉冲变压器/阻尼系数/脉冲方波/波形特性/RCD缓冲吸收电路Key words
pulsed electric fields/pulse transformer/damping coefficient/square pulse/waveform characteristic/RCD buffer absorbing circuit引用本文复制引用
张若兵,刘怀宇,张星,董广奇..基于阻尼系数的PEF系统输出方波波形特性影响因素[J].高电压技术,2018,44(8):2464-2471,8.基金项目
国家自然科学基金(51177082) （51177082）
深圳市科技计划(JCYJ20130402145002399) （JCYJ20130402145002399）
清洁生产重点实验室(筹)提升计划.Project supported by National Natural Science Foundation of China(51177082), Science and Technology Plan of Shenzhen(JCYJ20130402145002399), Promotion Fund of the Key Laboratory of Cleaner Production(Building). （筹）
