一种简易的对地泄漏电流的检测方法

针对加速器储存环对撞区超导磁铁高浮地电压的要求,设计了一种简单易行的对地泄漏电流检测方法,给出了其基本解决方案。     

基于FPGA及μC／OS-Ⅱ的高精度磁铁电源数字控制器

针对中国散裂中子源CSNS/快循环同步加速器RCS磁铁电源的串联谐振式特殊负载及指标,提出了一种基于FPGA及嵌入μC／OS-Ⅱ实时操作系统的新型数字控制器设计方案,介绍了其中关键的数字PID算法,基于以上数字控制器试制了一台全数字CSNS磁铁电源样机。现场试验结果表明,该方案满足了CSNS快循环同步加速器磁铁对电源的极高要求。     

应用于CSNS/RCS系统的开关线性混合型电源

给出了一种解决高带宽、高跟踪精度、大电流电源的方案,该方案结合开关电源与线性电源各自的优点,并在中国散裂中子源(CSNS)/快循环同步加速器(RCS)射频偏流源系统中得到了应用,满足了系统设计要求。     

一种超导电源研究与设计

本文介绍了一台FAIR（Facility for Antiproton and lon Research）项目预研的超导磁铁电源设计与研究。文中首先详细介绍了该电源所采用的由多相同步整流技术、无损平均电流测量技术所构成的拓扑结构。介绍了电源采用的控制拓扑和设计中所涉及的一些软硬件技术细节。最后通过一些波形和数据介绍了整个方案的设计结果。     

并联有源滤波在加速器电源上的应用研究

提出一种用于加速器磁铁电源 ,基于相控整流和并联有源滤波的高性能大功率稳流电源系统 ,分析了有源滤波原理 ,给出基于复合控制的电流响应无滞后跟踪控制方案。仿真及原理性样机实验表明 ,系统设计合理 ,动态响应快 ,静态精度高 ,可以满足加速器对电流纹波及跟踪性能的极高要求     

一种用于大电流特种电源功率变换器的设计

由于粒子加速器特种电源行业的特殊性,加之对粒子加速器特种电源从容量、技术性能、工艺结构等各方面要求越来越高,需要对关键核心部件进行设计升级,以满足特种电源日益发展的需要。本文通过一种特定要求设计了一种用于大电流特种电源的功率变换器,通过设计和测试,使其成为一种标准产品,解决大电流特种电源产品非标性质带来的问题,为今后大电流特种电源的可靠性、批量化生产提供技术支撑。     

天水电气传动研究所两项科研开发项目通过专家鉴定并获高度评价

2007年12月21日,由国内知名专家组成的专家组对天水电气传动研究所研发的如下两项科研开发项目进行了鉴定:1".HPI2000特种磁铁电源"科研开发项目:鉴定结论为"国际先进水平";2".超导磁铁电源"科研开发项目:鉴定结论为"国际领先水平"。     

特殊而应用广泛的电源一特种电源

本文讨论了特种电源的要求和用途,详细论述了雷达发射机高压电源、电子束焊机用大功率高压电源、高压脉冲电源和加速器电源系统等几种类型的特种电源     

高稳定度直流稳流电源

一、概述高稳定度直流稳流电源装置主要用作重离子加速器和高能加速器的磁铁线圈电源,大电流精密分流器和电流传感器及计量部门其它仪器的校准所需的大电流电源等。二、主要技术要求     

一种新拓扑模式的低压大电流电源

介绍了一台用于重离子加速器的低压大电流电源。为满足加速器电源对降低纹波输出和提高效率的特殊要求,采用了一种全新的电源拓扑结构,即基于同步整流技术的多路移相式开关变换器。文中重点介绍了该变换器在效率和纹波抑制方面的优点,给出电路仿真和试验结果,同时总结了几点经验用于参考。     

120A超导磁体专用电源调节器

超导磁体专用电源是超导磁体系统的重要组成部分,电源的手动调节器用数字调节系统来代替,会使超导磁体励磁更加灵活方便、稳定可靠。本文叙述了该数字调节系统的软件、硬件设计和实验结果。     

A Superconducting Magnet with Center Field of 10 T and φ100 mm Warm Bore

A conduction-cooled superconducting magnet with central field of 10T and warm bore of 100 mm was designed based on a Nb3Sn and two NbTi superconducting coils. At the first stage, the NbTi coils have been fabricated and tested. A two-stage 4 K Gifford-McMahon (GM) cryocooler with the second-stage power in 1W, 4.2K is used to cool the magnet from room temperature to 4 K. The superconducting magnet with the same power supply has the operating current of 116A. The magnet can be rotated with a support frame to be operated with either horizontal or vertical position. A pair of Bi-2223 high temperature superconducting current leads was employed to reduce heat leakage into 4.2K level. The NbTi coils reachto the operating current of 120A without training effect to be observed during charging of the magnet during 40 minutes charging time and generate the center field of 6.5T. The training effect in the NbTi magnet directly cool-down by cryocooler and inter-winding support structure in magnet can be remarkably improved. The superconducting magnet has been stably operated for more than 275 hours with 6.5T. In this paper, the detailed design, fabrication, stress analysis and quench protection characteristics are presented.     

A Superconducting Magnet with Center Field of 10 T and φ100 mm Warm Bore

ⅠIntroductionIt is expected that the middle and small-scale mag-nets immersed in liquid helium will be replaced by theeasy-operating conduction cooled superconducting magnetin near future[1~3].For the aimof superconducting mag-net applications in the advanced material processing,awide bore conduction-cooled superconducting magnet withavailable warmbore of100 mmand center field of 10 Twas designed.The NbTi superconducting coils have beenfabricated and tested.The systemis automated by using…     

超导磁体供电电源的控制

本文详细叙述如何通过控制技术来实现和保证供超导磁体用特种电源的技术性能。并给出实验结果。     

超导磁体供电电源的设计研究

本文介绍一种超导磁体专用的大电流、水冷却的恒流电源,叙述了该电源的设计、构成及其特点。     

超导磁体失超检测电路的设计

超导磁体的失超检测与保护是超导电力技术实用化的一个重要课题。为了实现对超导储能混合磁体的失超检测与保护,本论文根据混合磁体的特点及结构,在现有有源功率检测的基础上,提出了一种针对超导混合磁体的电压校正电路,通过对混合超导磁体上产生的失超信号进行隔离、放大、滤波以及比较等,实现失超信号的检测。设计并完成了失超检测系统硬件电路的制作与调试。通过搭建高温超导线圈的实验装置,在高温超导储能磁体上进行失超检测的实验研究,得出了电压矫正前后的线圈电压波形。给线圈分别以不同速度充电,研究充电速度对阀值电压、失超的起始点及临界电流的影响。实验线圈电压波形表明,该失超检测系统能及时、有效地检测超导混合磁体失超的发生。     

Power Control of Directly Driven Wind Generation System Based on Superconducting Magnetic Energy Storage

The increasing wind power penetration poses significant technical problems to the development of electric power systems. In this article, an integrated control strategy is proposed based on the characteristics of the directly driven permanent magnet synchronous generator wind turbine. The directly driven permanent magnet synchronous generator wind turbine is incorporated with superconducting magnetic energy storage, which can smooth the wind power fluctuations, enhance the low-voltage ride-through capability of the wind generation system, and achieve an uninterruptible power supply to local loads under isolated grid operation. According to the MATLAB/SIMULINK-based (The MathWorks, Natick, Massachusetts, USA) digital computer simulation model, the proposed control strategy is confirmed to be effective in power control of grid operation.     

35 kJ/7 kW直接冷却高温超导磁储能系统

介绍了直接冷却高温超导磁储能（SMES）系统（35kJ／7kW）的总体结构和基本试验结果。该系统主要由超导磁体、低温系统、功率调节系统和监控系统组成。实验结果表明，通过直接冷却将储能磁体成功冷却到了20K以下；储能磁体的直流临界电流达到150A，临界储能量84kJ，磁体中心场强4．5T；监控系统和变流器能控制SMES与系统快速独立地在四象限进行有功功率和无功功率交换；在电力系统动态模拟实验中，SMES能有效抑制电力系统中因发电机机端短路故障引起的功率振荡。     

超导储能功率脉冲电源中脉冲变压器的研制

利用脉冲变压器模式的超导储能功率脉冲电源能有效地提升输出电流,针对这种模式,笔者重点介绍了降压升流型脉冲变压器的一种设计方法.文中先建立了脉冲变压器的等效电路模型,给出了脉冲变压器的技术要求和结构参数设计.通过理论分析和参数计算研制了一台脉冲变压器,对研制好的脉冲变压器进行仿真和实验测试,结果表明:实验输出波形与仿真波...     

Design and operation of a 40-MW, highly stabilized power supply

Four 10 MW highly stabilized power supply modules have been installed at the National High Magnetic Field Laboratory in Tallahassee, FL, to energize water-cooled resistive high-field research magnets. The power supply modules achieve a long-term current stability of 10 ppm over a 12-h period with a short-term ripple and noise variation of <10 ppm over a time period of one cycle. The power supply modules can operate independently, feeding four separate magnets, or two, three, or four modules can operate in parallel. Each power supply module consists of a 12.5-kV vacuum circuit breaker, two three-winding step-down transformers, a 24-pulse rectifier with interphase reactors, and a passive and an active filter. Two different transformer tap settings allow rated DC supply output voltages of 400 and 500 V. The rated current of a supply module is 17 kA and each supply module has a one-hour overload capability of 20 kA. The isolated output terminals of each power supply module are connected to a reversing switch. An extensive high-current bus system allows the modules to be connected to 16 magnet cells. This paper presents the detailed design of the power supply components. Various test results taken during the commissioning phase with a 10 MW resistive load and results taken with the research magnets are shown. The effects of the modules on the electrical supply system and the operational behavior of the power factor correction/harmonic filters are described. Also included are results of a power supply module feeding a superconducting magnet during quench propagation tests