Development of a pulsed power supply with tens of milliseconds flattop time

Ma, Xingxiao; Yu, Zhiguo; Xiao, Jinshui; Xu, Fengyu; Ding, Ming; Wang, Lin; Peng, E; Li, Hongtao

doi:10.1063/1.5127059

Cited by 3 publications

(2 citation statements)

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“…Here, C is the total capacitance [µF], L is the total circuit inductance [µH], T is the pulse width [µs], and Z is the circuit characteristic impedance [Ω] [24][25][26][27]. The design of circuit elements in a PFN is affected by the characteristic impedance of the load and the required pulse width.…”

Section: Design Of the Optimal Pulsed Power System For Magnetic Pulse...mentioning

confidence: 99%

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Analysis and Design of a Pulsed Power Generator for a Low-Energy Magnetic Pulse Welding System

Kwon,

Hwang,

2023

Electronics

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Magnetic pulse welding (MPW) is a joining method that uses Lorentz force generated from an electromagnetic field. This method not only has the advantage of not causing thermal deformation of the material and no by-products compared to the method of joining by melting by heat but also enables the joining of dissimilar metals rather than the joining of the same metal. Joining dissimilar metals can reduce the weight of mechanical devices and apply them to various fields. Recent research on MPW has focused on the characteristics of bonding according to the material or structure of metal rather than on pulse power research that generates the main factor of operation. However, in the operation of MPW, a Lorentz force is generated by the induced current caused by the electromotive force created in the flyer tube and the external magnetic field in the actuator. Therefore, it is necessary to analyze and optimize the pulse power to improve reliability and to miniaturize the system to expand the MPW utilization range. In this paper, we analyzed MPW operation according to a section of the pulse power output waveform. A condition for obtaining the maximum current in the flyer tube was proposed, and a plateau-shaped waveform was derived as an ideal output waveform capable of maintaining the Lorentz force. Through analysis, the proposed pulse power device is designed as a pulse-forming network (PFN) that generates a plateau output waveform. The design specification is that the circuit of PFN (type E) is designed so that the output waveform is pulse width 10 (μs) and the maximum output current is 100 (kA), and it is verified by simulation.

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Section: Design Of the Optimal Pulsed Power System For Magnetic Pulse...mentioning

confidence: 99%

“…Here, C is the total capacitance [µF], L is the total circuit inductance [µH], T is the pulse width [µs], and Z is the circuit characteristic impedance [Ω] [24][25][26][27].…”

Section: Design Of the Optimal Pulsed Power System For Magnetic Pulse...mentioning

confidence: 99%

Analysis and Design of a Pulsed Power Generator for a Low-Energy Magnetic Pulse Welding System

Kwon,

Hwang,

2023

Electronics

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Development of a micro-electrochemical machining nanosecond pulse power supply

Chang

Wang

Tang

et al. 2022

Review of Scientific Instruments

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Micro-electrochemical machining (micro-ECM) has been widely used for microscale and nanoscale processing of materials. The performance of the nanosecond pulse power supply is directly related to the precision of micro-ECM, which is one of the core technologies for micro-ECM. In this work, a nanosecond pulse power supply, with adjustable pulse frequency, duty cycle, and voltage, was designed with an STM32F103VET6 single-chip microcomputer as the control core and a metal–oxide–semiconductor field-effect transistor as the chopper switch component. The performance test has shown that the power supply can produce a continuous pulse with the highest frequency of 8 MHz, the shortest pulse width of 50 ns, the maximum peak current of 12 A, and the maximum voltage of 10 V. As compared with the power supply reported in the literature, the present power supply demonstrated the enhanced output current and improved waveform of the nanosecond pulse output, which could result in better machining accuracy and efficiency for micro-ECM.

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