Design and control of the accelerator grid power supply-conversion system applied to CFETR N-NBI prototype

Dongyu WANG (王栋煜); Ming ZHANG (张明); Shaoxiang MA (马少翔); Shu YANG (杨舒); Kexun YU (于克训); Yuan PAN (潘垣)

doi:10.1088/2058-6272/ab8d9c

Plasma Science and Technology > 2020 > 22(8): 85601-085601. > DOI: 10.1088/2058-6272/ab8d9c

Dongyu WANG (王栋煜), Ming ZHANG (张明), Shaoxiang MA (马少翔), Shu YANG (杨舒), Kexun YU (于克训), Yuan PAN (潘垣). Design and control of the accelerator grid power supply-conversion system applied to CFETR N-NBI prototype[J]. Plasma Science and Technology, 2020, 22(8): 85601-085601. DOI: 10.1088/2058-6272/ab8d9c

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Design and control of the accelerator grid power supply-conversion system applied to CFETR N-NBI prototype

¹ State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
² School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China

Funds: This work is supported by the National Key R&D Program of China under Grant No. 2017YFE0300104 and by National Natural Science Foundation of China (Nos. 51707073 and 51821005).

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Received Date: February 21, 2020
Revised Date: April 23, 2020
Accepted Date: April 26, 2020

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Abstract

Abstract

The acceleration grid power supply (AGPS) rated 200 kV/25 A is a key component devoted to supply the acceleration grids of the China fusion engineering test reactor negative-ion-based neutral beam injector (N-NBI) prototype system. This paper focused on the design and control of the AGPS conversion system (AGPS-CS), with emphasis on the requirement of the wide range output voltage and rise time. A voltage regulation switch at the front of step-down transformer is applied to optimize the grid current and DC-link voltage. Moreover, a new feedforward control strategy with piecewise PI compensator is proposed to improve the characteristics of AGPS. The simulation results of the proposed AGPS-CS are presented, proving the performance of the power supply to achieve the desired requirements.
- CFETR,
- NBI,
- accelerator grid power supply,
- feedforward control,
- high voltagepower supply

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References (11)

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