Development of 8 MW Power Supply Based on Pulse Step Modulation Technique for Auxiliary Heating System on HL-2A

In order to meet the stringent requirements of fusion power supply for large-scale fusion devices, the J-TEXT engineering team has carried out key technology research and applications in several important directions of fusion power supply. This article presents the advances made by the J-TEXT engineering team in recent years in the following areas: (1) high-voltage power supply for auxiliary heating system; (2) breakdown protection device for auxiliary heating power supply; (3) magnetic field compatibility; (4) high-voltage pulsed power supply for field reversed configuration; (5) large physics experimental facility control system. The research backgrounds, technical progress, test results, applications, summaries and prospects are described in detail in each part. These innovative research results and valuable engineering experience can promote the progress of fusion power supply technology, and also lay a foundation for the development of power supplies with higher parameters in the future.

Section: High-voltage Power Supply For Auxiliary Heating Systemmentioning

confidence: 99%

Fusion power supply advances by the J-TEXT engineering team

Zhang¹,

Zhang²,

Wang³

et al. 2022

“…In order to make this HVPS meet technical requirements, especially the frequency and depth of modulation, using pulse step modulation (PSM) technology is the first choice. The total output voltage can be controlled by modifying the duty ratio of IGBTs through feed-forward control and feed-back control [6] . Fig.…”

Section: Structure Designmentioning

confidence: 99%

Structure Design and Analysis of High-Voltage Power Supply for ECRH

Wang¹,

Huang²,

Zhao³

et al. 2014

In order to develop a high-voltage power supply (HVPS) with high quality parameters, not only its electrical circuit but also its structure should be studied in detail. In this paper, the structure design of the collector power supply for gyrotron is discussed first. Then the electrical field and potential simulations of its main devices are analyzed. Finally, relevant calculations and conclusions are given.

“…To simplify the structure and improve the resolution of the EGPS, the pulse step module technology based EGPS (rated voltage and current: 16 kV/20 A) was designed with 27 switch power supply (SPS) modules [6][7][8][9]. Figure 1 shows the schematic diagram of the EGPS.…”

Section: Introductionmentioning

confidence: 99%

The development of data acquisition and control system for extraction power supply of prototype RF ion source

Huang

Zhao

et al. 2018

A 16 kV/20 A power supply was developed for the extraction grid of prototype radio frequency (RF) ion source of neutral beam injector. To acquire the state signals of extraction grid power supply (EGPS) and control the operation of the EGPS, a data acquisition and control system has been developed. This system mainly consists of interlock protection circuit board, photoelectric conversion circuit, optical fibers, industrial compact peripheral component interconnect (CPCI) computer and host computer. The human machine interface of host computer delivers commands and data to program of the CPCI computer, as well as offers a convenient client for setting parameters and displaying EGPS status. The CPCI computer acquires the status of the power supply. The system can turn-off the EGPS quickly when the faults of EGPS occur. The system has been applied to the EGPS of prototype RF ion source. Test results show that the data acquisition and control system for the EGPS can meet the requirements of the operation of prototype RF ion source.