关键词: H 桥级联, 载波移相, 谐波分析, 稳态精度

Abstract: Magnetic field power supply is an important part of first plasma discharge in HL-2M tokamak, 
which is tightly related to the establishment of zero field, plasma breakdown and maintenance as well as 
configuration control. In order to obtain the voltage and current of the power supply required by the first plasma 
discharge, the main circuit, control, measurement and protection of the magnetic field power supply are adjusted, 
respectively. On this basis, a variety of engineering debugging is carried out to ensure that the control and 
protection performance of the magnetic field power supply can meet the requirements of the first plasma 
discharge. During the operation of the magnetic field power supply, the consistency and ripple of the control 
performance and output parameter of the power supply are significantly improved. In this paper, the applications 
of the magnetic field power supply in the debugging and HL-2M first plasma discharge are introduced. 

Key words: Magnetic field power supply, Power supply control, Performance analysis, Ripple, Trouble analysis