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)

References

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Periodical cited type(8)

1.	Li, X., Huang, Y., Pan, S. et al. Dynamic Performance Investigation of Acceleration Grid Power Supply for NNBI System With RBF-Type-III Compensator. IEEE Transactions on Plasma Science, 2024, 52(4): 1380-1388. DOI:10.1109/TPS.2024.3388676
2.	Zhang, H., Li, Z., Ma, S. et al. Design of high-voltage components for acceleration grid power supply of neutral beam injection system \| [中性束注入系统加速极电源高压部件设计]. Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams, 2024, 36(2): 025011. DOI:10.11884/HPLPB202436.230159
3.	Li, X., Huang, Y., Pan, S. et al. Development of Acceleration Grid Power Supply of NNBI System for CRAFT. IEEE Transactions on Plasma Science, 2024, 52(1): 89-95. DOI:10.1109/TPS.2023.3345144
4.	He, K., Li, Q., Xia, Y. et al. Direct current high voltage power control strategy based on 200 kV/15 A inverter \| [基于 200 kV/15 A 逆变型直流高压电源的控制策略]. Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams, 2023, 35(6): 066002. DOI:10.11884/HPLPB202335.220355
5.	Zhang, H., Zhu, B., Ma, S. et al. DC active power filter based on model predictive control for DC bus overvoltage suppression of accelerator grid power supply. Plasma Science and Technology, 2023, 25(6): 064001. DOI:10.1088/2058-6272/acb1a4
6.	Zhu, B., Ma, S., Zhang, H. et al. Fault diagnosis algorithm for 3-phase passive rectifiers based on frequency-domain analysis for acceleration grid power supply in CFETR NBI system. Plasma Science and Technology, 2022, 24(12): 124004. DOI:10.1088/2058-6272/ac9aa9
7.	Zhang, M., Zhang, H., Wang, R. et al. Fusion power supply advances by the J-TEXT engineering team. Plasma Science and Technology, 2022, 24(12): 124007. DOI:10.1088/2058-6272/ac9f2c
8.	Ma, S., Yang, S., Li, Z. et al. Dynamic Voltage-Balancing Method of Series Diode Rectifier in Inverter-Type AGPS. IEEE Transactions on Plasma Science, 2022, 50(4): 1137-1143. DOI:10.1109/TPS.2022.3142729

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