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Energies
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Pulsed Power Science and High Voltage
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Pulsed Power Science and High Voltage

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 6682

Special Issue Editors

Prof. Dr. Yan Mi

E-Mail Website
Guest Editor
School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Interests: solid-state pulsed power technology; application of pulsed power technology in the field of material modification
Dr. Yan Zhou

E-Mail Website
Guest Editor
1. School of Electrical Engineering, Chongqing University, Chongqing 400030, China

2. School of Electronics and Internet of Things, Chongqing College of Electronic Engineering, Chongqing 401331, China
Interests: pulsed power technology; pulsed power application

Special Issue Information

Dear Colleagues,

Pulsed power technology has been developed since the 1930s, which is used initially to meet the needs of national defense. With the advancement of energy storage technology, switching technology, and measurement technology, pulsed power technology is developing in the direction of high repetition frequency, modularization, compactness, solid-state, etc., and its application has gradually turned to the civilian field at present. Considerable progress has been made in the fields of material manufacturing, environmental, medical, biological, and pulsed power technology has become one of the most active research fields in high voltage.

In this Special Issue, we plan to explore and present novel ideas and valuable outcomes addressing the various aspects of generation, measurement, application, etc. of pulsed power technology. We want to place special attention on:

  • Generation of pulsed power
  • Measurement of pulsed power
  • Application of pulsed power technology
  • Novel material in pulsed power system
  • Failure mechanism of material in pulsed power system

While the above-mentioned list may not cover all the issues related to pulsed power technology, this Special Issue welcomes the submission of manuscripts on other similar topics of interest.

Prof. Dr. Yan Mi
Dr. Yan Zhou
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (4 papers)

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Research

11 pages, 2120 KiB  
Article
Fast Time Response Full Absorption Faraday Cup and Its Application in the Measurement of Intensive Electron Beam Diodes
by Pengfei Zhang, Dingguo Lai, Hailiang Yang, Jiang Sun and Wei Luo
Energies 2023, 16(2), 669; https://doi.org/10.3390/en16020669 - 6 Jan 2023
Viewed by 1520
Abstract
A magnetically insulated transmission line (MITL) is an inevitable choice for ultra-high power density energy transmissions. Its working process is complex, with an obvious influence on the working process of electron beam diodes and other load devices. The power coupling process of an [...] Read more.
A magnetically insulated transmission line (MITL) is an inevitable choice for ultra-high power density energy transmissions. Its working process is complex, with an obvious influence on the working process of electron beam diodes and other load devices. The power coupling process of an electron beam diode driven by an MITL is a difficult problem in pulse power applications. No research is available on the electron beam characteristics of its anode. In this paper, a fast time response full absorption Faraday cup was developed. An intense electron beam measurement waveform showing the multi-stage characteristics was obtained through measurements using the Faraday cup absorber as the anode of the electron beam diode. The stage characteristics of the beam were in good agreement with the vacuum transmission, magnetic insulation formation, and multi-stage process of the stable magnetic insulation. The beam intensity corresponded with the conduction current of the cathode. It was obviously smaller than the current of the anode. The results reflected the influence of the different processes of the magnetic insulation on the transmission line on the beam waveforms in the diode area and provided a reference for the power transmission of the power device and the load system design. Full article
(This article belongs to the Special Issue Pulsed Power Science and High Voltage)
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14 pages, 4611 KiB  
Article
Discharge Characteristics and System Performance of the Ablative Pulsed Plasma Thruster with Different Structural Parameters
by Rui Zhang, Zhiqiang Tian, Wenxiong Xi and Dongjing He
Energies 2022, 15(24), 9389; https://doi.org/10.3390/en15249389 - 12 Dec 2022
Viewed by 955
Abstract
Under the given initial discharge energy level, altering the electrode structural parameters of the Ablative Pulse Plasma Thruster (APPT) is an effective way to improve the performance of the thruster. The purpose of this study is to reveal the underlying mechanism of the [...] Read more.
Under the given initial discharge energy level, altering the electrode structural parameters of the Ablative Pulse Plasma Thruster (APPT) is an effective way to improve the performance of the thruster. The purpose of this study is to reveal the underlying mechanism of the effect of changing the electrode structure parameters on the performance of the APPT system and to offer targeted support for researchers to optimize the design of APPT structure. With rectangular and tongue-shaped electrode configurations at various electrode flare angles, electrode lengths, and electrode spacings, the discharge characteristics, propellant ablation characteristics, and thruster performance of the APPT are systematically investigated. The underlying mechanism of how changing the electrode’s configuration parameter affects the performance of the thruster is identified by fitting and predicting the parameters of the APPT discharge circuit and system performance under various operating conditions. The results show that using tongue-shaped electrodes is more effective than using rectangular electrodes in terms of enhancing the inductive gradient of the electrodes, transferring more energy to the discharge channel, and increasing the squared integral value of the discharge current. As a result, the tongue-shaped electrode APPT performs better than the APPT with rectangular electrodes, as a consequence. The thruster’s performance can be enhanced for the same electrode configuration by increasing the electrode flare angle within a certain angle range; however, the improvement is extremely limited. Additionally, in the case of small electrode spacing, increasing the electrode flare angle can enhance the thruster’s performance more effectively. Full article
(This article belongs to the Special Issue Pulsed Power Science and High Voltage)
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14 pages, 3294 KiB  
Article
Class-C Pulsed Power Amplifier with Voltage Divider Integrated with High-Voltage Transistor and Switching Diodes for Handheld Ultrasound Instruments
by Hojong Choi
Energies 2022, 15(21), 7836; https://doi.org/10.3390/en15217836 - 22 Oct 2022
Cited by 2 | Viewed by 1311
Abstract
A novel Class-C pulsed power amplifier with a voltage divider integrated with a high-voltage transistor and switching diodes is proposed to reduce DC power consumption and increase the maximum output power for handheld ultrasound instruments. Ultrasonic transducers in ultrasound instruments are devices that [...] Read more.
A novel Class-C pulsed power amplifier with a voltage divider integrated with a high-voltage transistor and switching diodes is proposed to reduce DC power consumption and increase the maximum output power for handheld ultrasound instruments. Ultrasonic transducers in ultrasound instruments are devices that convert electrical power into acoustic power or vice versa, which are triggered by power amplifiers. Efficient power conversion is also very important to avoid thermal issues in handheld ultrasound instruments owing to limited battery power and excessive heat generation caused by the enclosed structures of the handheld ultrasound instruments. Consequently, higher output power and lower DC power consumption are desirable for a power amplifier. Therefore, a circuit to control power amplifiers was developed. The measured output power (94.66 W) and DC power consumption (2.12 W) when using the proposed circuit are better than those when using the existing Class-C pulsed power amplifier (74.90 W and 2.77 W, respectively). In the pulse-echo measurement mode, the echo amplitude (12.34 mVp-p) and bandwidth (27.74%) of the proposed Class-C pulsed power amplifier were superior to those of the existing Class-C pulsed power amplifier (4.38 mVp-p and 23.25%, respectively). Therefore, the proposed structure can improve the performance of handheld ultrasound instruments. Full article
(This article belongs to the Special Issue Pulsed Power Science and High Voltage)
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14 pages, 5733 KiB  
Article
Design of a Compact 1-MV-Class Radial Closing Switch for Tesla Type Generator
by Liang Zhao and Lin Zhou
Energies 2022, 15(9), 3229; https://doi.org/10.3390/en15093229 - 28 Apr 2022
Viewed by 1618
Abstract
The paper presents the development of a megavolt-class SF6-insulated radial switch. The switch is used as a crowbar in a MV Tesla-type generator to produce pulsed electric fields in very large volumes, for proof-of-concept experimentation of a novel non-invasive food processing [...] Read more.
The paper presents the development of a megavolt-class SF6-insulated radial switch. The switch is used as a crowbar in a MV Tesla-type generator to produce pulsed electric fields in very large volumes, for proof-of-concept experimentation of a novel non-invasive food processing technology. The main features of the switch include: (1) Using SF6 gas as the insulation gas; (2) a breakdown channel along the radial direction, rather than axial; (3) a compact configuration with its volume limited to 3.2 L. In order to achieve a ruggedized high voltage insulation as well as an enhanced operation safety, the following design techniques were applied: (1) Structures of the switch were well designed to minimize the local electric filed in the cathode triple junctions; (2) the grooves of surface of the insulators that enclose the switch were finely optimized to keep the surface flashover under control; (3) a prolate spheroid geometry of the high voltage electrode was adopted to achieve a better control of the gas breakdown. This paper describes in detail the design and the preliminary test of this switch. Full article
(This article belongs to the Special Issue Pulsed Power Science and High Voltage)
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