Virtual instrument for controlling and monitoring digitalized power supply in SSRF

Virtual instrument for controlling and monitoring digitalized power supply in SSRF 1 2 first-author 1 1 2 1 1 corresp Corresponding author. E-mail: dmli@sinap.ac.cn Corresponding author. E-mail: dmli@sinap.ac.cn dmli@sinap.ac.cn Shanghai Institute of Applied Physics, the Chinese Academy of Sciences, Shanghai 201800, China; Shanghai Institute of Applied Physics, the Chinese Academy of Sciences, Shanghai 201800, China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, China Graduate School of the Chinese Academy of Sciences, Beijing 100049, China The Shanghai Synchrotron Radiation Facility (SSRF) needs extremely precise power supplies for their various magnets. A digital controller is being developed for the power converters of the SSRF power supply (PS). In the digital controller, a fully digital pulse-width modulator (PWM) directly controls the power unit insulated gate bipolar transistor (IGBT) of the PS. A program in LabVIEW language has been developed to control and monitor the digital PS via serial communication (RS232) from a PC and to modify its parameters as well. In this article, the software design of the virtual instrument for controlling and monitoring digitalized PS and its associated functions are described, and the essential elements of the program graphical main-VI and sub-VI source code are presented and explained. The communication protocol and the structure of the developed system are also included in this article. LabVIEW Digital power supply Virtual instrument SSRF PWM References SSRF Design Report . Shanghai Synchrotron Radiation Center , May 2001 , Chapter 2: 89 - 105 ; Chapter 3: 43 - 50 . SSRF Design Report Carwardine J , Lenkszus F , Trends in the use of digital technology for control and regulation of power supplies , in Proc. International Conference on Accelerator and Large Experimental Physics Control Systems , Trieste , 1999 : 171 - 175 Trends in the use of digital technology for control and regulation of power supplies Jenni F , Tanner L , Digital control for highest precision accelerator power supplies , PAC’01 , Chicago , May 2001 : 3681 - 3683 Digital control for highest precision accelerator power supplies National Instruments Corporation , Getting started with LabVIEW , April 2003 Edition, Part Number 323427A-01, Chapter 1: 1-16 Getting started with LabVIEW National Instruments Corporation , LabVIEW User Manual , April 2003 Edition, Part Number 320999E-01, Chapter 1: 1-4 LabVIEW User Manual 10.1016/S1001-8042(06)60025-0 TL503.5 2006-02-15 2006-06-20 2021-01-19 2006 Nuclear Science and Techniques 03 17