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.