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A Control System Based on PXI Technology for the ECRH Power Supply of J-TEXT | IEEE Journals & Magazine | IEEE Xplore

A Control System Based on PXI Technology for the ECRH Power Supply of J-TEXT


Abstract:

A 100-kV/60-A high-voltage power supply (HVPS) is developed to supply the auxiliary heating system for a J-TEXT tokamak. This power supply is based on pulse step modulati...Show More

Abstract:

A 100-kV/60-A high-voltage power supply (HVPS) is developed to supply the auxiliary heating system for a J-TEXT tokamak. This power supply is based on pulse step modulation (PSM) technology and consists of 144 switch modules. To fulfill the isolation, control, and protection requirements, a control system based on the PCI extensions for instrumentation is designed with the PSM technology for the HVPS. Experimental results show that the system has a good control performance and fast response. Thus, the proposed system meets the control requirement of the 100-kV/60-A HVPS.
Published in: IEEE Transactions on Plasma Science ( Volume: 42, Issue: 6, June 2014)
Page(s): 1709 - 1713
Date of Publication: 16 May 2014

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I. Introduction

Electron cyclotron resonance heating (ECRH) is an important auxiliary heating method for tokamak plasma [1]. To supply the ECRH system in J-TEXT, a 100-kV/60-A high-voltage power supply (HVPS) is developed [2]. The HVPS is based on pulse step modulation (PSM) and consists of 144 modules. To manage large quantities of signals and meet real-time requirements, digital signal processor and field programmable gate array (FPGA) are used to control the HVPS, such as the HVPS for ECRH on HL-2A [3] and HVPS for neutral beam injection heating on EAST [4]. This control strategy controls the HVPS effectively but is not compatible with ITER control, data access, and communication (CODAC) system [5], [6]. This paper presents a new control method with PCI extensions for instrumentation (PXI) [7], [8] and FPGA technology for the HVPS control system to meet the ITER CODAC standard. Performance tests for the control system are conducted to validate the feasibility of the system.

References

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