1. State Key Laboratory of Power Transmission Equipments & System Security and New Technology Chongqing University Chongqing 400044 China; 2. Chongqing Academy of Metrology and Quality Inspection Chongqing 400020 China; 3. Changshou Power Supply Bureau of State Grid Chongqing Electric Power Company Chongqing 401220 China
Abstract:In order to meet the requirement of microorganism sterilization experiments, a newly high voltage square pulse generator with adjustable polarity is put forward. The main topology circuit is that a half bridge Marx generator cascades a H bridge. Moreover, a DSP control unit takes charge of switch on/off situation of the H bridge namely two loops for outputting negative pulses or positive pulses alternatively. The operation principle of each module on condition of various loads is illustrated in the paper. Moreover, it is tested and verified by PSIM software simulation. In addition, a prototype of pulse generator is self-made, whose output electrical parameters are as follows, peak voltage reachs ±7kV, maximum current attains ±10A, pulse frequency is up to 1kpps, rising edge is 160ns, pulse width is 3.5μs. The pulse generator can work stable at various load conditions, and it is easy to adjust the voltage, frequency, pulse width and polarity. In general, it is easy to realize modularization and miniaturization of manufacture, and the IGBT floating drive technology guarantees its safe and reliable operation.
[1] Gusbeth C, Frey W, Volkmann H, et al. Pulsed electric field treatment for bacteria reduction and its impact on hospital wastewater[J]. Chemosphere, 2009, 75(2): 228-233. [2] Eing C, Goettel M, Straessner R, et al. Pulsed electric field treatment of microalgae-benefits for microalgae biomass processing[J]. IEEE Transactions on Plasma Science, 2013, 41(10): 2901-2907. [3] Chen F, Zeng L Q, Zhang Y Y, et al. Degradation behaviour of methamidophos and chlorpyrifos in appale juice treated with pulsed electric fields[J]. Food Chemistry, 2009, 112(4): 956-961. [4] Titova V Y, Stokozenko V G, Maximov A I. Applica- tion of underwater discharge for modification of cellulose materials[J]. IEEE Transactions on Plasma Science, 2010, 38(4): 933-936. [5] 胡敏, 何湘宁. 微弧氧化用脉冲电源的研制[J]. 电工技术学报, 2009, 24(5): 215-219. Hu Min, He Xiangning. Design of pulsed power source for micro-arc oxidation[J]. Transactions of China Electrotechnical Society, 2009, 24(5): 215-219. [6] 章程, 邵涛, 龙凯华, 等. 大气压空气中纳秒脉冲介质阻挡放电均匀性的研究[J]. 电工技术学报, 2010, 25(1): 30-36. Zhang Cheng, Shao Tao, Long Kaihua, et al. Uniform of unipolar nanosecond pulse DBD in atmospheric air[J]. Transactions of China Electrotechnical Society, 2010, 25(1): 30-36. [7] Mi Y, Yao C G, Li C X, et al. Apoptosis induction effects of steep pulsed electric fields(SPEF) on human liver cancer cell SMMC-7721 in vitro[J]. IEEE Transac- tions on Dielectrics and Electrical Insulation, 2009, 16(5): 1302-1310. [8] Chen J, Zhang R B, Wang L M, et al. Influence of pulse rise time on the inactivation of staphylococcus aureus by pulsed electric fields[J]. IEEE Transactions on Plasma Science, 2010, 38(8): 1935-1941. [9] Sun B, Aye N N, Wang X M, et al. Eradication of invasive organisms from ballast water with electrodeless pulsed-discharge hybrid reactor[J]. IEEE Transactions on Industry Applications, 2011, 47(3): 1079-1085. [10] Zhang D D, Zhou Y, Wang J, et al. A compact, high repetition-rate, nanosecond pulse generator based on magnetic pulse compression system[J]. IEEE Transac- tions on Dielectrics and Electrical Insulation, 2011, 18(4): 1151-1157. [11] Li H T, Hong-Je R, Jong-Soo Kim, et al. Development of rectangle-pulse marx generator based on PFN[J]. IEEE Transactions on Plasma Science, 2009, 37(1): 190-194. [12] 徐伟东, 陈文光, 宣伟民, 等. 基于PSM技术的70kV/90A高压脉冲电源的研制[J]. 电工技术学报, 2011, 26(12): 129-135. Xu Weidong, Chen Wenguang, Xuan Weimin, et al. Development of the 70kV/90A high-voltage pulse power supply based on PSM technology[J]. Transactions of China Electrotechnical Society, 2011, 26(12): 129- 135. [13] Redondo L M, Canacsinh H, Fernando S J. New technique for uniform voltage sharing in series stacked semiconductors[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2011, 18(4): 1130-1136. [14] Yao C G, Zhang X M, Guo F, et al. FPGA-controlled all-solid-state nanosecond pulse generator for biological applications[J]. IEEE Transactions on Plasma Science, 2012, 40(10): 2366-2372. [15] Canacsinh H, Redondo L M, Silva J F. Marx-type solid-state bipolar modulator topologies: performance comparison[J]. IEEE Transactions on Plasma Science, 2012, 40(10): 2603-2610. [16] Redondo L M, Canacsinh H, Fernando S J. Generalized solid-state marx modulator topology[J]. IEEE Transac- tions on Dielectrics and Electrical Insulation, 2009, 16(4): 1037-1042. [17] Redondo L M, Silva J F. Repetitive high-voltage solid-state marx modulator design for various load conditions[J]. IEEE Transactions on Plasma Science, 2009, 37(8): 1632-1637.