Research on the Overcurrent-Short Circuit Protection Method of Nanosecond Pulse Power Supply Applied in the Field of Gliding Arc Discharge

2021 ◽  
Author(s):  
Chunhui Zhang ◽  
Shanshan Jin ◽  
Zhi Fang
Keyword(s):  
Power Supply ◽  
Arc Discharge ◽  
Short Circuit ◽  
Pulse Power ◽  
Nanosecond Pulse ◽  
Pulse Power Supply ◽  
Gliding Arc Discharge ◽  
Gliding Arc ◽  
Protection Method

scholarly journals Conversion of CO2 in a gliding arc discharge reactor: Discharge characteristics and the effects of different parameters

2021 ◽  
Vol 2076 (1) ◽  
pp. 012103
Author(s):  
Tinghao Zhang ◽  
Na Lu ◽  
Kefeng Shang ◽  
Nan Jiang ◽  
Jie Li ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Supply ◽  
Gas Flow ◽  
Barrier Discharge ◽  
Arc Discharge ◽  
Input Voltage ◽  
Thermal Plasmas ◽  
Pulse Power Supply ◽  
Gliding Arc Discharge ◽  
Gliding Arc

Abstract In this work, a knife-shaped gliding arc discharge (GAD) reactor driven by a modulated pulse power supply was used to convert CO2. The discharge image, voltage and current waveforms of GAD were recorded experimentally. The effects of gas flow rate, input voltage, and the duty cycle of power supply on CO2 conversion were studied. A CO2 conversion of 3.8% and energy efficiency of 39.6% could be achieved. Compared with other non-thermal plasmas, GAD has a slightly lower CO2 conversion but higher energy efficiency. In addition, the capacity of CO2 treated by GAD (6 L/min) was significantly higher than other non-thermal plasmas (e.g. 25 mL/min-125 mL/min in corona discharge and dielectric barrier discharge).

Development of Ultra-Short Pulse Power Supply Applicable to Micro-ECM

2009 ◽  
Vol 626-627 ◽  
pp. 369-374 ◽  
Author(s):  
Yong Jun Zhang ◽  
Yong Jun Tang ◽  
Xiao Kang Liu ◽  
Z.N. Guo ◽  
F. Li
Keyword(s):  
Power Supply ◽  
Short Pulse ◽  
Short Circuit ◽  
Pulse Power ◽  
Step Motor ◽  
Machining Accuracy ◽  
Pulse Power Supply ◽  
Micro Ecm ◽  
Ultra Short Pulse ◽  
Pulse On Time

A nanosecond pulse power supply for micro-ECM (Electrochemical Machining) has been developed, and the minimum pulse on-time is 50 ns. After the influence of ultra-short pulse on micro-ECM was analyzed, complementary chopper circuit was presented to avoid waveform distortion, which can achieve higher pulse frequency. A fast protect circuit was designed, and its response time is less than 5μs, which can avoid damaging workpiece and electrical components by switching off machining voltage and step motor as soon as a short circuit was detected. A series of ECM experiments using the power supply have been carried out, and results of test have proved that high frequency, short pulse width power supply helps to achieve better quality surface, higher machining accuracy.

Modeling of the Temperature Distribution in Arc Discharge Plasma Reactor

2006 ◽  
Vol 9 (2) ◽  
Author(s):  
Jarosław Diatczyk ◽  
Henryka Danuta Stryczewska ◽  
Grzegorz Komarzyniec
Keyword(s):  
Temperature Distribution ◽  
Power Supply ◽  
Thermal Plasma ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Plasma Reactor ◽  
Gliding Arc Discharge ◽  
Gliding Arc ◽  
Non Thermal Plasma ◽  
Non Equilibrium

AbstractFor pollution control the non-thermal plasma seems to be the most convenient source of energetic electrons and chemically active species. In the electrical discharges the non-thermal plasma condition at atmospheric pressure can be obtained with fast gas flow through the discharge chamber volume, like in DC glow discharge or AC gliding arc discharge. The electrons temperature and its volumetric distribution is one of the fundamental parameters that should be study if we want to obtain the non-equilibrium low temperature plasma conditions in given geometry of the plasma reactor. These conditions depend on the kind of plasma gas and its velocity, geometry of the gliding arc reactor and on parameters of the power supply system. Paper presents a simplified mathematical model of the two -electrode gliding arc reactor to determine electron temperature and its distribution. Results of calculations are useful for selection of the power supply systems parameters and their design as to ensure the non-equilibrium state of gliding arc discharge plasma. Further calculations aim at three-and multielectrode reactors and three-dimension temperature distribution.

The Development of Nanosecond Pulse Power Supply of Electrochemical Micromachining

2011 ◽  
Vol 396-398 ◽  
pp. 1799-1802
Author(s):  
He Bin Wang ◽  
Zhong Ning Guo ◽  
Hong Ping Luo ◽  
Jin Fei Liang ◽  
Zi Ping Han
Keyword(s):  
Power Supply ◽  
Pulse Power ◽  
Nanosecond Pulse ◽  
Electrochemical Micromachining ◽  
Duty Ratio ◽  
Pulse Power Supply ◽  
Power Amplification ◽  
Waveform Generation ◽  
Dc Power ◽  
Circuit Power

This paper makes some research on designing and manufacturing a nanosecond pulse power supply of electrochemical micromachining, including DC power supply, waveform generation circuit, rectifier and filter circuit，power amplification and rapid protection circuit. This power supply can generate 5MHz maximum frequency and square wave of 100ns pulse width, stably. The voltage ranges from 0V to 10V, and duty ratio ranges from 0.1 to 0.5, continuously.

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