Performance Analysis of an All Solid-State Linear Transformer Driver

Collier, L.; Dickens, J.; Mańkowski, J.; Neuber, A.

doi:10.1109/tps.2017.2712361

Cited by 13 publications

(4 citation statements)

References 13 publications

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“…The device conducted the output current of 450 A at a bias voltage of 26 kV. Wu et al [17] reported that a vertical-type PCSS based on VCSI 6H-SiC based PCSS with a load resistance of 20-Ω demonstrated a minimum on-state resistance of 5.6 Ω with the optical energy of 31.9 mJ and an output current of 591 A at a bias voltage of 18 kV. Cao et al [18] reported that a vertical-type PCSS based on VCSI 4H-SiC with a 0.05-Ω CVR exhibited a minimum on-state resistance of 7.5 Ω with the optical energy of 65 mJ and output current of 840 A at the bias voltage of 12 kV.…”

Section: Resultsmentioning

confidence: 99%

“…High power microwave pulse generators generally drive antenna so that the solid-state switches for microwave applications have been characterized with 50-Ω load impedance [2], [14], [15]. Linear transformer drivers (LTD) have driven load impedances lower than 1-Ω to maximize the circuit current output [16], [17]. To observe high current switching characteristics, a current viewing resistor (CVR) has been employed in series with the PCSS.…”

Section: Introductionmentioning

confidence: 99%

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Output Characteristics of Side-Illuminated Photoconductive Semiconductor Switch Based on High Purity Semi-Insulating 4H-SiC

Choi

Kim

et al. 2022

IEEE Access

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Photoconductive semiconductor switch (PCSS) allowing side illumination was fabricated on high purity semi-insulating (HPSI) 4H-SiC. A 532-nm pulsed laser with variable optical energy was used to trigger the PCSS. The performance of the PCSS was characterized under the two different load conditions, 50-Ω load and 0.05-Ω, with a current viewing resistor (CVR). The PCSS exhibited significantly different output characteristics for the two different loads. The equivalent resistance of the PCSS with the 50-Ω load, which was calculated from the output voltage and current, was inversely proportional to the optical energy, but the one with a 0.05-Ω load exhibited saturation behavior with the optical energy. While the times at peak output with the 50-Ω load were similar at various optical energies, the times at peak output with the 0.05-Ω load were dependent on the optical energy. Output current oscillation was also observed after the PCSS was turned off in the case of 0.05-Ω load condition. The different output characteristics for the different load resistances were analyzed using the transient response of the equivalent circuits. The PCSS exhibited a minimum on-state resistance of 0.27 Ω with the optical energy of 8 mJ and a maximum output current of 657 A at the bias voltage of 4.8 kV. The operating voltage of the PCSS was limited by surface flashover, which caused an additional output pulse following the first output pulse.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Output Characteristics of Side-Illuminated Photoconductive Semiconductor Switch Based on High Purity Semi-Insulating 4H-SiC

Choi

Kim

et al. 2022

IEEE Access

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“…Inductive adder is a relatively new scheme of pulse power generation, which is typically composed of N single-turn transformers with a common secondary winding to generate the required pulse power [2][3][4][5][6][7][8]. Especially recently, inductive adder pulsers using solid-state semiconductor power devices, such as insulated-gate bipolar transistors (IGBTs) [9] and metal-oxide-semiconductor field-effect transistors (MOSFETs) [8,[10][11][12][13][14], have been developed.…”

Section: Jinst 18 T07005mentioning

confidence: 99%

A low characteristic impedance quasi-rectangular pulser based on solid-state inductive adder for High rEpetition rate Muon Source at CSNS

et al. 2023

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A solid-state inductive adder-based quasi-rectangular pulser featuring a low characteristic impedance has been developed in the laboratory to demonstrate the technical viability of using such a pulser for the HEMS muon source. The pulser consists of five layers connected in series, with each layer comprising 24 parallel branches. The paper mainly presents the design of the low characteristic impedance quasi-rectangular pulser from three aspects: primary driver circuit, coaxial central structure and transformer magnetic core. The experimental results show that through the careful design of the above three items, a quasi-rectangular pulse with fast rise and fall time can be achieved. The typical parameters of pulse voltage, pulse current, pulse flattop, repetitive rate, rise time and fall time at a charging voltage of 700 V are 3.5 kV, 560 A, 315 ns, 1 kHz, 47 ns, and 66 ns, respectively, on a 6.25 Ω matching resistor. In addition, the output characteristics of the pulser are investigated by varying critical parameters such as the charging voltages, the load resistances, and the number of parallel branches. The findings and results outlined in this paper offer valuable insights for the initial phase of developing an inductive adder pulser. They can aid in assessing the feasibility of the project, selecting critical parameters for essential components, and enhancing the output pulse's performance. A full-scale pulser with a peak pulse current of 3 kA and rise and fall time of ≤ 75 ns for HEMS muon source will be developed in the near future.

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“…Aimed to improve the output performance, many research projects focusing on LTD stages have been conducted. Thus, there have been many improved designs, such as Fast LTDs [8,9] and solid-state LTD [10]. All phenomena show that the LTD technology is a hot issue.…”

Section: Introductionmentioning

confidence: 99%

Reliability Modelling and Evaluation for LTD System Based on Load-Sharing Model

et al. 2019

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Based on power adding technology, the linear transformer driver (LTD) scheme is widely used to generate high-energy pulsed outputs and adopts a hierarchical and modular structure. Although robust design and fault analysis for basic components have been conducted recently, there is still a lack of enough reliability analysis studies of the whole system. Taking an actual LTD system as an object, this paper presents a system reliability model based on a load-sharing mechanism. A unified load-sharing rule structure is established and four typical rules corresponding to equal, linear, exponential, and local-equal relationships are discussed in detail while evaluating the impact of the load-sharing mechanism. Subsequently, simulation experiments are performed to illustrate the effects of different load-sharing rules as well as analyzing the system reliability in which we simultaneously propose a self-adaptive Monte Carlo simulation flow to achieve the sampling probability adjustment according to the random failure sequence. The simulation results can serve as a suggestion for further improvement of the system reliability. Moreover, the model framework and the simulation analysis method described here are universal and can be applied to evaluate the reliability of other LTD-based systems with tiny modifications.

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Performance Analysis of an All Solid-State Linear Transformer Driver

Cited by 13 publications

References 13 publications

Output Characteristics of Side-Illuminated Photoconductive Semiconductor Switch Based on High Purity Semi-Insulating 4H-SiC

Output Characteristics of Side-Illuminated Photoconductive Semiconductor Switch Based on High Purity Semi-Insulating 4H-SiC

A low characteristic impedance quasi-rectangular pulser based on solid-state inductive adder for High rEpetition rate Muon Source at CSNS

Reliability Modelling and Evaluation for LTD System Based on Load-Sharing Model

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