合肥先进光源快校正磁铁电源的研制

发布时间：2022-02-13 20:24

　　合肥先进光源（HALF）是中国正在进行预研的第四代衍射极限储存环光源。超低的束流发射度对包括磁铁电源在内的每个加速器系统提出了更高的要求。由于束流轨道会在光源运行的任何时刻发生偏移,因此最终的同步辐射光的质量也会受影响。由于电子束流轨道受到由磁铁电源决定的磁场的约束,所以快速响应的电源可以帮助校正磁铁迅速完成对束流轨道位置的校正。然而,目前普通的校正磁铁电源性能并不足以解决自身输出稳定性和响应速度之间的矛盾。本文基于合肥先进光源的物理设计和束流仿真要求,致力于研制出响应速度快、输出稳定度高的校正磁铁电源原型样机。线性电源具有不可替代的低纹波噪声的优势,本文研制了一种使用金属氧化物半导体场效应晶体管（MOSFET）的300W功率双极性线性电源样机。不同于常规H桥拓扑的是,本设计中的两个MOSFET工作在线性放大状态,另外两个MOSFET工作在开关状态用于切换输出电流的极性。选用了高精度的20位分辨率数字模拟转换器（DAC）芯片AD5791来保证20ppm的电流设定分辨率。使用高精度万用表Fluke8508A进行性能测试,结果显示电源的频率响应可以达到10kHz,长期稳定度可以达到5ppm... 

【文章来源】：中国科学技术大学安徽省211工程院校985工程院校

【文章页数】：169 页

【学位级别】：博士

【文章目录】：
摘要
ABSTRACT
Acknowledgements
Chapter 1 Introduction
    1.1 BACKGROUND AND MOTIVATION
    1.2 REVIEW OF MAGNET POWER SUPPLY SYSTEM
    1.3 RESEARCH STATUS OF CORRECTOR MAGNET POWER SUPPLY
    1.4 RESEARCH OBJECTIVES
    1.5 THE SUMMARY AND INNOVATION OF THE THESIS
    1.6 REFERENCES
Chapter 2 Analysis of topology and control strategy
    2.1 INTRODUCTION TO LINEAR POWER SUPPLY DESIGN METHODS
        2.1.1 Constant current power supply based on an operational amplifier
        2.1.2 Linear power supply based on electronic load principle
    2.2 BRIEF INTRODUCTION OF SWITCHING POWER SUPPLY
        2.2.1 Differences between digital control and analog control
        2.2.2 Basic control algorithm of switching power supply
    2.3 CONCLUSION
    2.4 BIBLIOGRAPHY
Chapter 3 Development of linear power supply for fast corrector
    3.1 COMPOSITION OF THE POWER SUPPLY
    3.2 IMPLEMENTATION METHOD OF THE POWER CONVERSION
        3.2.1 Operation mode of the power converter module
        3.2.2 Control strategy for the efficiency
        3.2.3 Design of "H-bridge" control circuit
    3.3 DESIGN OF PI CLOSED-LOOP CONTROL SYSTEM
    3.4 DESIGN OF THE DIGITAL CONTROL CARDS
        3.4.1 Digital controller for the linear polar supply
        3.4.2 Sampling circuits
    3.5 SOFTWARE DESIGN OF LINEAR POWER SUPPLY
        3.5.1 Design of infrastructure driver software
        3.5.2 Local control interface design
    3.6 INTERFACE WITH ORBIT FEEDBACK SYSTEM
    3.7 CONCLUSION
    3.8 BIBLIOGRAPHY
Chapter 4 A Multilevel Power Supply Based on Buck Cascade Circuit
    4.1 DESIGN OF MULTILEVEL POWER CONVERSION MODULE
        4.1.1 Aohantages of multilevel circuits
        4.1.2 Buck cascaded three-level topology
        4.1.3 Modulation method based on carrier phase shifting
    4.2 DESIGN AND STABILITY ANALYSIS OF THE CLOSED LOOP SYSTEM
    4.3 DIGITAL CONTROLLER FOR THE SWITCHING POWER SUPPLY
        4.3.1 Core control unit
        4.3.2 Sampling circuits
    4.4 SIMULATION ANALYSIS USING SIMULINK
    4.5 MOSFET DRIVING CIRCUIT
    4.6 DESIGN OF SOFTWARE FOR SWITCHING POWER SUPPLY
        4.6.1 FPGA software design
        4.6.2 Local control software design
    4.7 CONCLUSION
    4.8 BIBLIOGRAPHY
Chapter 5 Performance test of the fast corrector power supply prototypes
    5.1 TEST METHODS AND STANDARDS FOR PERFORMANCE PARAMETERS
    5.2 HIGH-PRECISION TEST PLATFORM FOR POWER SUPPLIES
        5.2.1 Test platform based on 8.5-digit multimeter
        5.2.2 Multi-channel high-precision test platform
        5.2.3 Performance comparison between the two test platforms
    5.3 TEST OF THE POWER SUPPLY PROTOTYPES
        5.3.1 Experimental results and analysis of the linear power supply
        5.3.2 Design verification of multilevel switching power supply prototype
    5.4 TEST OF DIGITAL CONTROL CARDS
    5.5 CONCLUSION
    5.6 BIBLIOGRAPHY
Chapter 6 Summary and Recommendations
    6.1 DEVELOPMENT OF A LINEAR CORRECTOR MAGNET POWER SUPPLY
    6.2 DEVELOPMENT OF A SWITCHING POWER SUPPLY FOR CORRECTOR MAGNET
    6.3 TEST SYSTEM ANALYSIS
    6.4 RECOMMENDATIONS AND FUTURE WORKS
Appendix 1
Appendix 2
Biography
    PUBLICATIONS
        Journals
        Proceedings
        Patent
致谢



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