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首页> 外文期刊>Plasma Science, IEEE Transactions on >Self-Excitation and Energy Recovery of Air-Core Compulsators
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Self-Excitation and Energy Recovery of Air-Core Compulsators

机译：空心推进器的自励和能量回收

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摘要

As power supplies, compulsators are popular choices for high-end railgun power supplies. In order to increase power and energy density, air-core compulsators are proposed by using composite materials instead of traditional iron-core compulsators. Due to the absence of ferromagnetic material, the flux density in the air-core compulsator can reach to 4–6 T instantaneously, which is much higher than the saturation field strength in traditional iron-core machines. Therefore, self-excitation topology is essential for the air-core compulsator to obtain up to 100-kA field current. This paper carried out research on the key parameters of self-excitation efficiency first, and then focus on the large magnetic energy remained in the inductive field winding after one shot, an implementation scheme and control strategy of energy recovery of air-core compulsator was proposed and analyzed. By controlling the field rectifier working at active inverter state after one discharge process, the magnetic energy stored in the field winding can be converted to rotor kinetic energy again. The simulation results indicate that the energy recovery efficiency can reach to 70% for a reference air-core compulsator. The continuous discharge number of times increased from 3 to 4 during one kinetic energy charging, which means that the delivered energy density increases 33.3%.
机译：作为电源，强制器是高端轨道炮电源的流行选择。为了增加功率和能量密度，提出了通过使用复合材料代替传统的铁芯强制器来实现空芯强制器。由于缺少铁磁材料，空心推进器中的磁通密度可以瞬间达到4-6 T，这比传统铁芯电机的饱和磁场强度高得多。因此，自励磁拓扑对于空心脉冲发生器获得高达100 kA的励磁电流至关重要。本文首先对自激效率的关键参数进行了研究，然后针对一次发射后感应场绕组中剩余的大磁能，提出了一种空心推进器能量回收的实现方案和控制策略。并进行分析。通过在一个放电过程后控制励磁整流器工作在有源逆变器状态，可以将存储在励磁绕组中的磁能再次转换为转子动能。仿真结果表明，参考空心推进器的能量回收效率可达到70％。在一次动能充电期间，连续放电的次数从3次增加到4次，这意味着输送的能量密度增加了33.3％。

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  • 来源
    《Plasma Science, IEEE Transactions on》 |2017年第7期|1168-1174|共7页
  • 作者

    Weiduo Zhao; Shaopeng Wu; Shumei Cui; Chris Gerada; He Zhang; Zhuang Xu;

  • 作者单位

    Power Electronics, Machines and Control Group, International Academy of the Marine Economy and Technology, The University of Nottingham, Ningbo, China;

    Department of Electrical Engineering, Institute of Electromagnetic and Electronic Technology, Harbin Institute of Technology, Harbin, China;

    Department of Electrical Engineering, Institute of Electromagnetic and Electronic Technology, Harbin Institute of Technology, Harbin, China;

    Power Electronics, Machines and Control Group, The University of Nottingham, Nottingham, U.K.;

    Power Electronics, Machines and Control Group, The University of Nottingham, Nottingham, U.K.;

    Power Electronics, Machines and Control Group, International Academy of the Marine Economy and Technology, The University of Nottingham, Ningbo, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Windings; Discharges (electric); Rotors; Capacitors; Kinetic energy; Resistance; Railguns;

    机译：绕组;放电（电）;转子;电容器;运动能;电阻;手枪;

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