An all solid-state repetitive high-voltage rectangular pulse generator based on magnetic switch

Rao, Jun; Li, Zi; Xia, Kun; Xin, Shang-Zhi

doi:10.1109/tdei.2015.004956

Cited by 11 publications

(3 citation statements)

References 16 publications

(14 reference statements)

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“…The LTD is an N:N pulse transformer, so the magnetic core, pulse voltage and pulse width should satisfy the following equations [23]:…”

Section: Principle Of Magnetic Induction Superpositionmentioning

confidence: 99%

“…The LTD is an N : N pulse transformer, so the magnetic core, pulse voltage and pulse width should satisfy the following equations [23]:

N ()(, normalΔ B) S α = false\int V_{in} n false(t false) d t

normalΔ B = B_{s} - B_{r}

where N is the number of turns of the magnetic core winding, S is the cross‐sectional area of the magnetic core, α is the core filling factor, and V in is the pulse voltage amplitude of one LTD module.…”

Section: Topology and Operation Principle Of The Proposed Pulse Genmentioning

confidence: 99%

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Modular solid‐state pulse generator based on multi‐turn LTD

Dong

Wang

et al. 2020

IET Power Electronics

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A modular solid-state pulse generator based on a multi-turn linear transformer driver (LTD) is designed for the application of pulse power techniques with a high voltage, large current and wide pulse width. The LTD adopts the method of multi-turn winding on the magnetic core, which can help to output pulses of wide width. The isolation of the power supply with windings in the same direction of the LTD modules is designed, and the isolation voltage of the magnetic cores is the working voltage of the LTD modules. A modular solid-state pulse generator based on the multi-turn LTD is developed, which is composed of 10 LTD modules. Each module consists of 18 energy storage capacitors, metal-oxide-semiconductor field-effect transistors and their driving circuits connected in parallel. The pulse generator can output pulses with parameters including a voltage ranging from 0 to 5000 V, a pulse current up to −500 A, and a pulse width ranging from 200 ns to 5 μs. When all modules work in synchronisation, rectangular pulses can be produced with a rise time of 30 ns and a fall time of 16 ns. If all modules are asynchronised, trapezoidal pulses are produced with adjustable step-like rising and falling edges. Moreover, a higher-voltage pulse can be achieved by increasing the number of LTD modules.

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“…The LTD is an N:N pulse transformer, so the magnetic core, pulse voltage and pulse width should satisfy the following equations [23]:…”

Section: Principle Of Magnetic Induction Superpositionmentioning

confidence: 99%

“…The LTD is an N : N pulse transformer, so the magnetic core, pulse voltage and pulse width should satisfy the following equations [23]:

N ()(, normalΔ B) S α = false\int V_{in} n false(t false) d t

normalΔ B = B_{s} - B_{r}

Section: Topology and Operation Principle Of The Proposed Pulse Genmentioning

confidence: 99%

Modular solid‐state pulse generator based on multi‐turn LTD

Dong

Wang

et al. 2020

IET Power Electronics

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show abstract

“…The Marx structure mainly adopts the form of "parallel charging and series discharging" to realize the output of high-voltage pulsed waveforms [9,10]. With a Marx structure and semiconductor switch composition, a pulsed power supply can output the amplitude, frequency, and other parameters of an arbitrary nanosecond pulsed power [11][12][13][14]. However, all solid-state pulse sources have some problems, such as their circuit structures being more complex, their stability not being good, the limitations of the solid-state switch voltage withstand value generally being a low charging voltage, etc.…”

Section: Introductionmentioning

confidence: 99%

Study of Bipolar Inductively Isolated High-Voltage Pulse Source

Li,

Zhang,

Sosnovskiy

et al. 2023

Electronics

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To meet the application requirements of pulsed power technology in wastewater treatment and other aspects (for example, a scenario that requires a high-voltage pulse source that can output a pulse with a rising edge in the nanosecond range and a device that can stabilize the pulse under high-frequency conditions), this paper designed an inductively isolated bipolar high-voltage pulse source. It consists of three parts: the primary charging power supply, the isolated driver circuit, and the pulse-forming circuit. By using inductance instead of traditional resistance isolation, using the inductance for charging and isolation, the inductance can increase the charging voltage of the capacitor, so the circuit can achieve a higher voltage output. The dual-Marx generator parallel connection design of the pulsed power supply topology, using a primary charging power supply for positive and negative polarity charging, can simultaneously output the reverse polarity and size of high-voltage pulses to achieve a bipolar output, so the load has an effect on the pulse. The equipment was selected on the basis of the design of the isolated driver circuit, primary charging power supply circuit, and pulse-forming circuit for the corresponding simulation, and in the experiment to build a principle model, the tests showed that the pulse source output pulse amplitude range was 0~10 kV (the positive pulse voltage was 5 kV, and the negative pulse voltage was −5 kV), the pulse rising edge was approximately 200 ns, the pulse width was 1 μs, and the frequency range was 0~1 kHz for the pulse source frequency. The power supply was designed to be used in applications such as wastewater treatment.

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Novel high-frequency energy-efficient pulsed-dc generator for capacitively coupled plasma discharge

Mamun

Furuta

Hatta

2018

Review of Scientific Instruments

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The circuit design, assembly, and operating tests of a high-frequency and high-voltage (HV) pulsed dc generator (PDG) for capacitively coupled plasma (CCP) discharge inside a vacuum chamber are reported. For capacitive loads, it is challenging to obtain sharp rectangular pulses with fast rising and falling edges, requiring intense current for quick charging and discharging. The requirement of intense current generally limits the pulse operation frequency. In this study, we present a new type of PDG consisting of a pair of half-resonant converters and a constant current-controller circuit connected with HV solid-state power switches that can deliver almost rectangular high voltage pulses with fast rising and falling edges for CCP discharge. A prototype of the PDG is assembled to modulate from a high-voltage direct current (HVdc) input into a pulsed HVdc output, while following an input pulse signal and a set current level. The pulse rise time and fall time are less than 500 ns and 800 ns, respectively, and the minimum pulse width is 1 µs. The maximum voltage for a negative pulse is 1000 V, and the maximum repetition frequency is 500 kHz. During the pulse on time, the plasma discharge current is controlled steadily at the set value. The half-resonant converters in the PDG perform recovery of the remaining energy from the capacitive load at every termination of pulse discharge. The PDG performed with a high energy efficiency of 85% from the HVdc input to the pulsed dc output at a repetition rate of 1 kHz and with stable plasma operation in various discharge conditions. The results suggest that the developed PDG can be considered to be more efficient for plasma processing by CCP.

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An all solid-state repetitive high-voltage rectangular pulse generator based on magnetic switch

Cited by 11 publications

References 16 publications

Modular solid‐state pulse generator based on multi‐turn LTD

Modular solid‐state pulse generator based on multi‐turn LTD

Study of Bipolar Inductively Isolated High-Voltage Pulse Source

Novel high-frequency energy-efficient pulsed-dc generator for capacitively coupled plasma discharge

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