Bipolar high-repetition-rate high-voltage nanosecond pulser

Journal Article · Sun Jun 15 00:00:00 EDT 2008 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2943413· OSTI ID:21123946

Fuqiang, Tian; Yi, Wang; Hongsheng, Shi ^[1]; Qingquan, Lei ^[1]

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1. School of Electrical Engineer, Beijing Jiaotong University, Beijing 100044 (China)

The pulser designed is mainly used for producing corona plasma in waste water treatment system. Also its application in study of dielectric electrical properties will be discussed. The pulser consists of a variable dc power source for high-voltage supply, two graded capacitors for energy storage, and the rotating spark gap switch. The key part is the multielectrode rotating spark gap switch (MER-SGS), which can ensure wider range modulation of pulse repetition rate, longer pulse width, shorter pulse rise time, remarkable electrical field distortion, and greatly favors recovery of the gap insulation strength, insulation design, the life of the switch, etc. The voltage of the output pulses switched by the MER-SGS is in the order of 3-50 kV with pulse rise time of less than 10 ns and pulse repetition rate of 1-3 kHz. An energy of 1.25-125 J per pulse and an average power of up to 10-50 kW are attainable. The highest pulse repetition rate is determined by the driver motor revolution and the electrode number of MER-SGS. Even higher voltage and energy can be switched by adjusting the gas pressure or employing N{sub 2} as the insulation gas or enlarging the size of MER-SGS to guarantee enough insulation level.

• OSTI ID: 21123946
• Journal Information: Review of Scientific Instruments, Vol. 79, Issue 6; Other Information: DOI: 10.1063/1.2943413; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AVAILABILITY
CAPACITORS
DESIGN
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRIC FIELDS
ELECTRIC POTENTIAL
ELECTRODES
ENERGY STORAGE
KHZ RANGE
MODULATION
PLASMA
PLASMA SWITCHES
PULSE AMPLIFIERS
PULSE RISE TIME
PULSES
SPARK GAPS
WASTE WATER
WATER TREATMENT