Stray Magnetic Field Analysis of ITER Poloidal Field Converter Unit

Yang, Yong; Zhang, Ming; Song, Zhiquan; Xia, Minxue; Yu, Kexun; Jiang, Li

doi:10.1109/tps.2017.2655264

Cited by 4 publications

(5 citation statements)

References 13 publications

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“…Due to the high SMF generated by the tokamak device [15] and its coil power supply [8], the electrical and electronic components mounted in the high SMF environment will suffer severe MFI problems. The ITER Organization found that electromagnetic relays, contactors, programmable transducers, converters and power supply modules will fail in an SMF with strength within 25 mT [64][65][66].…”

Section: Magnetic Field Compatibilitymentioning

confidence: 99%

“…The latter usually provides a specific pulsed current waveform for the fusion device, and the operating time is typically in the range of μs to ms. The output current of the power supply will generate a strong stray magnetic field that may cause components such as electromagnetic actuators in the power supply to fail [8]. As fusion devices and power supplies develop, the engineering complexity and control difficulty will increase further.…”

Section: Introductionmentioning

confidence: 99%

“…The coil power supply usually operates with a high output current, and it will generate a high stray magnetic field (SMF) and lead to severe magnetic field interference (MFI) problems [8]. It is much more serious around the tokamak device and draws the attention of the ITER Organization [15].…”

Section: Introductionmentioning

confidence: 99%

“…It is much more serious around the tokamak device and draws the attention of the ITER Organization [15]. At present, the magnetic field immunity test is the most efficient method to qualify the sensitive equipment under high SMF due to the lack of experience of MFI problems [8]. We proposed the optimization design method of the magnetic field generating coil [16], which is the key component of the test platform, and designed the test coils for J-TEXT and ITER, and also helped the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) to complete the design of the test platform [17,18].…”

Section: Introductionmentioning

confidence: 99%

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Fusion power supply advances by the J-TEXT engineering team

Zhang¹,

Zhang²,

Wang³

et al. 2022

Plasma Sci. Technol.

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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.

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Section: Magnetic Field Compatibilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fusion power supply advances by the J-TEXT engineering team

Zhang¹,

Zhang²,

Wang³

et al. 2022

Plasma Sci. Technol.

Self Cite

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“…The Comprehensive Research Facility for Fusion Technology (CRAFT) project of China is proposed for further development of nuclear fusion. High-power converter module is the key equipment to provide controllable high direct current (DC) power supply for the superconducting load [1][2][3][4]. Thyristors are paralleled with the minimum number to supply the rated output current and withstand the short circuit current limited by the junction temperature and fault thermal accumulation (I 2 t) [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Preliminary design of high power magnet converter for CRAFT

Wang

Huang

et al. 2020

Plasma Sci. Technol.

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In order to test the superconducting magnet performance for the Comprehensive Research Facility for Fusion Technology (CRAFT) project of China, a power supply converter needs to be designed. In this paper, short circuits upstream and downstream of the direct current (DC) reactor are analyzed, and the thyristor style and the parallel number are determined by the limit analysis of junction temperature and fault current I 2 t. On this basis, the over current and voltage verification of fast fuse are finished to protect the thyristor at fault cases by considering the short circuit of the bridge arm. Then, the resistor and capacitor parameters of thyristor snubber are committed to decreasing the reverse over voltage. These analysis results will be used as the preliminary design of high power magnet converter for CRAFT.

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