scholarly journals Modes of operation and design features of pulse cables for the ITER project

2018 ◽  
Vol 245 ◽  
pp. 13001 ◽  
Author(s):  
Mikhail Doronin ◽  
George Greshnyakov ◽  
Nikolay Korovkin
Keyword(s):  
Power Supply ◽  
Magnetic System ◽  
High Current ◽  
Optimum Ratio ◽  
Power Devices ◽  
Modes Of Operation ◽  
Insulation Thickness ◽  
Design And Manufacture ◽  
Distinguishing Features ◽  
Iter Project

Cables with high current capacity are used in power devices, including special-purpose ones operating in impulse modes. It is important to ensure low inductance of such cables, because these type cable products are often used as connecting products. This article discusses the problems that arise in the design and manufacture of special low-inductance impulse cables (SLIC) for power supply and protection of the superconducting magnetic system of the ITER reactor (France), the distinguishing features of which are the optimum ratio of insulation thickness and throughput at low inductance.

scholarly journals A Battery-Powered High-current Power Supply for Superconductors.

2002 ◽  
Vol 37 (12) ◽  
pp. 783-786 ◽  
Author(s):  
Masayoshi WAKE ◽  
Hikaru SATO ◽  
Kazuo SUDA
Keyword(s):  
Power Supply ◽  
High Current

Design of high current narrow width pulsed power supply of laser diode

2010 ◽  
Vol 22 (6) ◽  
pp. 1223-1228 ◽  
Author(s):  
陈伟 Cheng Wei ◽  
苗琪媚 Miao Qimei ◽  
孙峰 Sun Feng ◽  
赵翔 Zhao Xiang
Keyword(s):  
Laser Diode ◽  
Power Supply ◽  
Pulsed Power ◽  
High Current ◽  
Pulsed Power Supply ◽  
Narrow Width

An 8kW LLC resonant converter in plasma power supply based on SiC power devices for efficiency improvement

Circuit World ◽  
2019 ◽  
Vol 45 (4) ◽  
pp. 181-188
Author(s):  
Zhenmin Wang ◽  
Wenyan Fan ◽  
Fangxiang Xie ◽  
Chunxian Ye
Keyword(s):  
Silicon Carbide ◽  
Power Supply ◽  
High Frequency ◽  
Experimental Results ◽  
Switching Frequency ◽  
Resonant Converter ◽  
Plasma Power ◽  
Power Devices ◽  
Content Type ◽  
Llc Resonant Converter

Purpose This paper aims to present an 8 kW LLC resonant converter designed for plasma power supply with higher efficiency and lighter structure. It presents how to solve the problems of large volume and weight, low performance and low efficiency of traditional plasma power supply. Design/methodology/approach At present, conventional silicon (Si) power devices’ switching performance is close to the theoretical limit determined by its material properties; the next-generation silicon carbide (SiC) power devices with outstanding advantages can be used to optimal design. This 8 kW LLC resonant converter prototype with silicon carbide (SiC) power devices with a modulated switching frequency ranges from 100  to 400 kHz. Findings The experimental results show that the topology, switching loss, rectifier loss, transformer loss and drive circuit of the full-bridge LLC silicon carbide (SiC) plasma power supply can be optimized. Research limitations/implications Due to the selected research object (plasma power supply), this study may have limited universality. The authors encourage the study of high frequency resonant converters for other applications such as argon arc welding. Practical implications This study provides a practical application for users to improve the quality of plasma welding. Originality/value The experimental results show that the full-bridge LLC silicon carbide (SiC) plasma power supply is preferred in operation under conditions of high frequency and high voltage. And its efficiency can reach 98%, making it lighter, more compact and more efficient than previous designs.

scholarly journals Application of the Lyapunov Algorithm to Optimize the Control Strategy of Low-Voltage and High-Current Synchronous DC Generator Systems

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 871 ◽  
Author(s):  
Jinfeng Liu ◽  
Xiaohai Tan ◽  
Xudong Wang ◽  
Herbert Ho-Ching IU
Keyword(s):  
Power Supply ◽  
Low Voltage ◽  
Definite Function ◽  
High Current ◽  
Generation System ◽  
Control Variables ◽  
Loop Control ◽  
Decoupling Method ◽  
Negative Definite Function ◽  
Current Sharing

In the present study, a novel multiple three-phase low-voltage and high-current permanent magnet synchronous generation system is proposed, which has only half-turn coils per phase. The proposed system is composed of a generator and two confluence plates with 108 rectifier modules. The output can reach up to 10,000 A continuous DC power supply, which is suitable for the outdoors and non-commercial power supply. The application of the Lyapunov algorithm in the synchronous rectification control was optimized. A current sharing loop control was added to the closed-loop control to ensure a stable output voltage and the output current sharing of each rectifier module. Since the two control variables solved by the Lyapunov algorithm were coupled and the negative definite function of the Lyapunov algorithm could not be guaranteed in this system, a simple decoupling method was used to decouple the control variables. Compared to the conventional control, the proposed strategy highly improved the dynamic performance of the system. The effectiveness of the proposed strategy was verified by the simulation. The 5 V/10,000 A hardware experiment platform was built, which proved the feasibility and validity of the proposed strategy for a high-power generation system.

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