The design and operation of a compact high-voltage, high pulse repetition frequency trigger generator

MacGregor, S.J.; Koutsoubis, J.M.; Turnbull, S.M.

doi:10.1088/0957-0233/9/11/016

Cited by 19 publications

(4 citation statements)

References 11 publications

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“…The gas used during the experiments was artificial air (79% N 2 /21%O 2 ) at a pressure of 3.0 bar absolute. A more detailed description of the design and operational characteristics of the TCS switch can be found elsewhere [8,9].…”

Section: Methodsmentioning

confidence: 99%

“…In both cases, the value of the charging resistor was chosen to result in a charging constant around three times smaller than the desired switch repetition rate (PRF ≈ 1 3τ ). The TCS switch was triggered by means of a battery powered trigger circuit, controlled by a solid-state controller via a fibre optic link [8]. The trigger pulse had a negative polarity with a magnitude equal to the charging voltage of the switch (V TR ∼ = 100% V CH ).…”

Section: Methodsmentioning

confidence: 99%

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Electrode erosion and lifetime performance of a high repetition rate, triggered, corona-stabilized switch in air

Koutsoubis

MacGregor

2000

J. Phys. D: Appl. Phys.

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This paper describes the work undertaken to investigate the electrode erosion mechanisms and lifetime-limiting parameters of a sealed, high pulse repetition frequency (PRF), triggered, corona-stabilized (TCS) switch. The switch, which had a rod-plane geometry, was filled with air and operated at repetition rates of 10 Hz and 1 kHz. The erosion rates of anode-cathode electrode materials such as brass, stainless-steel, aluminium and elkonite were measured, and their surface conditions were studied optically and photographed. The experimental results presented reflect the different mechanisms responsible for the erosion of the rod (anode) electrode of the TCS switch, when operated at a PRF of 10 Hz and 1 kHz. The erosion of the anode electrode at a PRF of 10 Hz varied from 5.44 × 10-6 cm3 C-1 for elkonite to 17.37 × 10-6 cm3 C-1 for aluminium. Additionally, at a PRF of 1 kHz, anode erosion ranged from 9.82 × 10-6 cm3 C-1 for brass to 16.58 × 10-6 cm3 C-1 for elkonite. Cathode erosion rates as high as 36.6 × 10-6 cm3 C-1 for brass at 10 Hz and 19.55 × 10-6 cm3 C-1 for elkonite at 1 kHz were measured. The lifetime of the TCS switch was found to be inversely proportional to the erosion rate of the rod electrode. Additionally, gas deterioration and anode surface conditions were found to have a pronounced influence on the performance and operational behaviour of the TCS switch.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Electrode erosion and lifetime performance of a high repetition rate, triggered, corona-stabilized switch in air

Koutsoubis

MacGregor

2000

J. Phys. D: Appl. Phys.

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“…For all of the experimental work described in this study, the TCS switch was filled with SF 6 gas at a pressure of 0.8 bar (80 kPa) absolute. A more detailed description of the design and operational characteristics of the TCS switch can be found elsewhere [11,12].…”

Section: Methodsmentioning

confidence: 99%

“…In order to protect the power supply from voltage reversals during the discharge of the load capacitor, a protection circuit was also included in the test circuit. The TCS switch was triggered by means of a battery powered trigger circuit, controlled by a solid state controller via a fiber optic link [11]. The trigger pulse had an opposite polarity and a magnitude equal to the charging voltage of the switch (V TR  100%V CH ).…”

Section: Methodsmentioning

confidence: 99%

Electrode erosion and lifetime performance of a triggered corona-stabilized switch in SF₆at a repetition rate of 1 kHZ

Koutsoubis

Thoma

MacGregor

2016

IEEE Trans. Dielect. Electr. Insul.

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This paper describes the work undertaken to investigate the electrode erosion and lifetime performance of an electrically triggered, corona stabilized (TCS) switch. The switch, which had a rod-plane geometry, was filled with SF 6 at a pressure of 0.8 bar (1.0bar = 100kPa) absolute and was operated at a pulse repetition frequency (PRF) of 1kHz. The erosion rates of anode and cathode electrode materials such as elkonite (a copper tungsten composite), brass, aluminum and two types of stainless steel was measured, and their surfaces were studied optically, photographed and chemically analyzed. The erosion rate of the anode (rod) electrode materials ranged from 21.39 x 10-6 cm 3 C-1 for elkonite to 60.4 x 10-6 cm 3 C-1 for brass, whilst a cathode (trigger disc) erosion rate as high as 51.23 x 10-6 cm 3 C-1 for aluminum was measured. The lifetime of the TCS switch was experimentally determined for each of the electrode material tested, and was found to be inversely proportional to the erosion rate of the rod electrode. The electrode surface morphology and the gas-electrode compound distribution have also been evaluated to address the erosion mechanism in effect. Additionally, the influence of rod electrode surface conditions and gas deterioration has been investigated in respect to the performance and operational behavior of the TCS switch.

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Design and performance analysis of transmission line-based nanosecond pulse multiplier

Verma

Shyam

Shah

2006

Sadhana

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Conventionally, Marx generators are used for the production of short duration, high voltage pulses but since many discharge gap switches are utilized for stepping up the voltage, there are many disadvantages. Here, an alternative and much simpler technique for the multiplication of nanosecond high voltage pulses has been presented in which multiplication takes place by switching single spark gap providing voltage gain of 'nxV ' where n is the subsequent number of stages. Stepped up high voltage pulse with fixed voltage gain of defined shape with fast rise time and good flat top is produced without using additional pulse-forming network. Its operation has been made repetitive by switching single spark gap. Multipurpose use, low cost, small size, light weight (weighing less than 50 kg) and portability are the additional benefits of the system. The reported nanosecond pulser has been made by cascading three stages of Blumlein. To cross check its performance the parasitic impedance of the system has been evaluated to realize its adverse effect on the voltage gain and pulse shape. Also its operation has been simulated by PSPICE circuit simulator program and good agreement has been obtained between simulated and experimental results. Applications of this pulse generator include X-ray generation, breakdown tests, ion implantation, streamer discharge studies and ultra wideband generation, among others.

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The design and operation of a compact high-voltage, high pulse repetition frequency trigger generator

Cited by 19 publications

References 11 publications

Electrode erosion and lifetime performance of a high repetition rate, triggered, corona-stabilized switch in air

Electrode erosion and lifetime performance of a high repetition rate, triggered, corona-stabilized switch in air

Electrode erosion and lifetime performance of a triggered corona-stabilized switch in SF₆at a repetition rate of 1 kHZ

Design and performance analysis of transmission line-based nanosecond pulse multiplier

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The design and operation of a compact high-voltage, high pulse repetition frequency trigger generator

Cited by 19 publications

References 11 publications

Electrode erosion and lifetime performance of a high repetition rate, triggered, corona-stabilized switch in air

Electrode erosion and lifetime performance of a high repetition rate, triggered, corona-stabilized switch in air

Electrode erosion and lifetime performance of a triggered corona-stabilized switch in SF6at a repetition rate of 1 kHZ

Design and performance analysis of transmission line-based nanosecond pulse multiplier

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Electrode erosion and lifetime performance of a triggered corona-stabilized switch in SF₆at a repetition rate of 1 kHZ