Control strategy for inverter type high voltage power supply for negative-ion based neutral beam injector

Zhang Ming; Zhou Lan; Wang Shu; Ma Shaoxiang; Zhang Xueliang; Yu Kexun; Pan Yuan

doi:10.11884/HPLPB201931.180265

Volume 31 Issue 4

Apr. 2019

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Zhang Ming, Zhou Lan, Wang Shu, et al. Control strategy for inverter type high voltage power supply for negative-ion based neutral beam injector[J]. High Power Laser and Particle Beams, 2019, 31: 040012. doi: 10.11884/HPLPB201931.180265

Citation:

Zhang Ming, Zhou Lan, Wang Shu, et al. Control strategy for inverter type high voltage power supply for negative-ion based neutral beam injector[J]. High Power Laser and Particle Beams, 2019, 31: 040012. doi: 10.11884/HPLPB201931.180265

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Control strategy for inverter type high voltage power supply for negative-ion based neutral beam injector

doi: 10.11884/HPLPB201931.180265

Zhang Ming^{1, 2
,},
Zhou Lan^{1, 2},
Wang Shu³,
Ma Shaoxiang^{1, 2
,
,},
Zhang Xueliang^{1, 2},
Yu Kexun^{1, 2},
Pan Yuan^{1, 2}

1.
International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2.
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074, China
3.
Economic Research Institute of State Grid Hubei Electric Power Co Ltd, Wuhan 430074, China

Received Date: 2018-10-12
Rev Recd Date: 2019-01-02
Publish Date: 2019-04-15

Abstract

Abstract

An inverter type high voltage power supply is required for the acceleration of ITER neutral beam injector (NBI) system. The power supply employs three-phase three-level DC/DC converter as its basic component. This type of power supply can regulate the output voltage rapidly by the duty cycle modulation of the inverter switches. However, when the duty cycle is very small, the output ripple will be large. A new control strategy has been studied for the power supply, the output voltage is regulated by inverter duty cycle combining with adjusting the dc-link voltage. In order to verify the control strategy, a 200 kV/60 A Simulink model and a 400 V/6 A prototype have been established. Simulation and experimental results demonstrate that the topology with this control strategy can limit the voltage ripple while maintain the rapid voltage response.
- high voltage power supply,
- neutral beam injector,
- control strategy,
- three-phase three-level DC/DC converter,
- duty cycle modulation

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References(12)

References

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