兰州重离子加速器冷却储存环主环二极铁电源设计

主环二极铁电源是兰州重离子加速器冷却储存环（HIRFL-CSR）工程的关键设备和指标要求最高的一台电源，采用了独特的拓扑和控制策略。为满足峰值功率3.15 MW（3 kA，1.45 kV）的输出能力和快脉冲要求，采用了晶闸管整流并联脉宽调制补偿单元的主电路拓扑结构和特殊的控制方式，这套综合方案确保电源满足了全部技术指标。本文介绍了该拓扑结构的原理和优势，讨论了为满足±2×10-4的跟踪误差的要求而采用的控制拓扑和双基准给定的原理，并简介了调试过程和近年来的运行和改进情况。

Design of main ring dipole power supply for Heavy Ion Research Facility in Lanzhou-Cooling Storage Ring

The main dipole power supply is the pivotal device of the Heavy Ion Research Facility in Lanzhou-Cooling Storage Ring (HIRFL-CSR) project and is the most technically demanding source. A special topology and control method has been used in the power supply. This paper firstly introduces the main circuit topology, which includes a silicon controlled rectifier and a parallel switching-mode rectifier. The topology is adopted to realize the peak output power of 3.15 MW (3 kA, 1.45 kV) and pulse-mode working state. Then it presents and discusses the control method and double reference setting system of the power supply, which are used to fulfill the strict requirements especially for the tracking error (less than ±2×10-4). Finally, it introduces the process of commissioning and the upgrading o