Design of NNBI RF power source output power control system
BackgroundWith the development of negative ion based neutral beam injection system (NNBI) for China fusion engineering test reactor (CFETR), the output power control system of its supporting the radio frequency (RF) power source is one of the key technologies to realize the improvement of its perfor...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Science Press
2023-01-01
|
| Series: | He jishu |
| Subjects: | |
| Online Access: | https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2023.hjs.46.010402&lang=zh |
| _version_ | 1811169630233821184 |
|---|---|
| author | WANG Zhao WANG Mingwei LEI Tao BAI Jianjun GE Rui |
| author_facet | WANG Zhao WANG Mingwei LEI Tao BAI Jianjun GE Rui |
| author_sort | WANG Zhao |
| collection | DOAJ |
| description | BackgroundWith the development of negative ion based neutral beam injection system (NNBI) for China fusion engineering test reactor (CFETR), the output power control system of its supporting the radio frequency (RF) power source is one of the key technologies to realize the improvement of its performance.PurposeThe study aims to design an improved output power control system of RF power source to solve the problems of output power stability and insufficient control accuracy in the use of existing RF power sources.MethodsThe software and hardware separation control structure designed by ARM+CPLD dual-core were employed to ensure the operation efficiency of the output power control algorithm of the RF power source and the communication stability of the peripheral equipment. Multi-stage progressive power control method and 12-bit digital signal were adopted to control the opening and closing of RF power amplifier, so as to realize high-precision control of output power. The capacitive voltage divider method and current transformer method were combined to accurately sample the actual output power of the RF power source for implementing high-stability control of output power with a closed-loop power control method. Meanwhile, the upper computer software design of man-machine interaction based on serial communication of self-defined protocol was adopted to complete the man-machine interaction function of output power control.ResultsThe control system has perfect human-computer interaction software function, and test results of the prototype RF power output power control system with simulation load show that the control accuracy of the output power is higher than 0.1% when the rated output power is 50 kW, and the stability fluctuation is less than 0.5%.ConclusionsThis scheme with impedance matching networks is expected to meet the performance requirements of CFETR NNBI RF power supply for output power control. |
| first_indexed | 2024-04-10T16:45:28Z |
| format | Article |
| id | doaj.art-73fd88e6578949339f700ba3a0d8683c |
| institution | Directory Open Access Journal |
| issn | 0253-3219 |
| language | zho |
| last_indexed | 2024-04-10T16:45:28Z |
| publishDate | 2023-01-01 |
| publisher | Science Press |
| record_format | Article |
| series | He jishu |
| spelling | doaj.art-73fd88e6578949339f700ba3a0d8683c2023-02-08T01:05:38ZzhoScience PressHe jishu0253-32192023-01-0146101040201040210.11889/j.0253-3219.2023.hjs.46.0104020253-3219（2023）01-0057-08Design of NNBI RF power source output power control systemWANG Zhao0WANG Mingwei1LEI Tao2BAI Jianjun3GE Rui4School of Electronic Information and Artificial Intelligence, Shaanxi University of Science & Technology, Xi'an 710021, ChinaSchool of Electronic Information and Artificial Intelligence, Shaanxi University of Science & Technology, Xi'an 710021, ChinaSchool of Electronic Information and Artificial Intelligence, Shaanxi University of Science & Technology, Xi'an 710021, ChinaShaanxi Xuntian Broadcast Technology Co., Ltd., Xianyang 712000, ChinaShaanxi Xuntian Broadcast Technology Co., Ltd., Xianyang 712000, ChinaBackgroundWith the development of negative ion based neutral beam injection system (NNBI) for China fusion engineering test reactor (CFETR), the output power control system of its supporting the radio frequency (RF) power source is one of the key technologies to realize the improvement of its performance.PurposeThe study aims to design an improved output power control system of RF power source to solve the problems of output power stability and insufficient control accuracy in the use of existing RF power sources.MethodsThe software and hardware separation control structure designed by ARM+CPLD dual-core were employed to ensure the operation efficiency of the output power control algorithm of the RF power source and the communication stability of the peripheral equipment. Multi-stage progressive power control method and 12-bit digital signal were adopted to control the opening and closing of RF power amplifier, so as to realize high-precision control of output power. The capacitive voltage divider method and current transformer method were combined to accurately sample the actual output power of the RF power source for implementing high-stability control of output power with a closed-loop power control method. Meanwhile, the upper computer software design of man-machine interaction based on serial communication of self-defined protocol was adopted to complete the man-machine interaction function of output power control.ResultsThe control system has perfect human-computer interaction software function, and test results of the prototype RF power output power control system with simulation load show that the control accuracy of the output power is higher than 0.1% when the rated output power is 50 kW, and the stability fluctuation is less than 0.5%.ConclusionsThis scheme with impedance matching networks is expected to meet the performance requirements of CFETR NNBI RF power supply for output power control.https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2023.hjs.46.010402&lang=zhrf power sourcepower controldual core controldigital controlclosed-loop control |
| spellingShingle | WANG Zhao WANG Mingwei LEI Tao BAI Jianjun GE Rui Design of NNBI RF power source output power control system He jishu rf power source power control dual core control digital control closed-loop control |
| title | Design of NNBI RF power source output power control system |
| title_full | Design of NNBI RF power source output power control system |
| title_fullStr | Design of NNBI RF power source output power control system |
| title_full_unstemmed | Design of NNBI RF power source output power control system |
| title_short | Design of NNBI RF power source output power control system |
| title_sort | design of nnbi rf power source output power control system |
| topic | rf power source power control dual core control digital control closed-loop control |
| url | https://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2023.hjs.46.010402&lang=zh |
| work_keys_str_mv | AT wangzhao designofnnbirfpowersourceoutputpowercontrolsystem AT wangmingwei designofnnbirfpowersourceoutputpowercontrolsystem AT leitao designofnnbirfpowersourceoutputpowercontrolsystem AT baijianjun designofnnbirfpowersourceoutputpowercontrolsystem AT gerui designofnnbirfpowersourceoutputpowercontrolsystem |