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Jin J.-X.,University of Electronic Science and Technology of China | Chen X.-Y.,University of Electronic Science and Technology of China | Xin Y.,Innopower Superconductor Cable | Sun Y.-W.,Innopower Superconductor Cable
Proceedings of the 29th Chinese Control Conference, CCC'10 | Year: 2010

The energy charging, storing and discharging characteristics of magnetic energy storage (MES) system have been theoretically analyzed in the paper to develop an integrated MES mathematical model and to provide a method to link superconductivity to conventional power electronics for design and control of practical superconducting magnetic energy storage (SMES) systems. The developed model has been verified with practical simulation results.


Jin J.,University of Electronic Science and Technology of China | Zhao H.,University of Electronic Science and Technology of China | Xin Y.,Innopower Superconductor Cable | Sun Y.,Innopower Superconductor Cable
Proceedings of the 29th Chinese Control Conference, CCC'10 | Year: 2010

This paper aims to develop a permanent magnet synchronous motor (PMLSM) control system based on space vector pulse width modulation (SVPWM) and analyzes its control effectiveness. Mathematical simulation models of PMLSM and SVPWM are firstly presented and established in Matlab/Simulink. An open-loop simulating control system and a field-oriented vector control (VC) based close-loop system are then built, and their control effectiveness is analyzed. To overcome the shortages of great overshooting and poor dynamic response of the traditional VC and improve the precision of position, a position-tracking control strategy is proposed and simulated. Analytical results indicate that the proposed strategy can improve the stability and precision of the PMLSM control system.


Feng F.,Tsinghua University | Qu T.-M.,Tsinghua University | Gu C.,Tsinghua University | Xin Y.,Innopower Superconductor Cable | And 3 more authors.
Physica C: Superconductivity and its Applications | Year: 2011

A comparative study on the critical current performance of Bi-2223/Ag and YBCO coated conductor wires in low magnetic fields at liquid nitrogen temperature was carried out in this work. Five commercial high temperature superconductor wires from different manufacturers were collected. Their critical currents were measured in magnetic fields, ranging from 0 to 0.4 T. On contrary to the common conception, the Bi-2223/Ag samples had better performance than YBCO coated conductor samples in the magnetic fields parallel to the wide surface of superconducting wires within the experimental scope. We also found similar results by collecting the concerned datum from the published literatures to confirm our measurement results. At the present stage, this fact made that the Bi-2223/Ag wires might be the preferred choice for the applications with mainly low parallel fields involved, unless other considerations were prioritized. © 2011 Elsevier B.V. All rights reserved.


Ren A.,Innopower Superconductor Cable | Tian M.,Innopower Superconductor Cable | Zi M.,Yunnan Power Grid Corporation Kunming Power Supply Bureau | Cui J.,Innopower Superconductor Cable
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | Year: 2012

The 35kV/121MVA superconductor cable and 35kV/90MVA superconductor fault current limiter at Yunnan Puji substation of southern china power grid have put into operation more than 8 years and 4 years respectively. A lot of operation data and experience have been accumulated. After several years operation and long-term monitoring, the main electric parameters of superconductor cable are the stable as the first, such as DC resistance, insulation etc. Except the individual parameter is not the same as the original design, the main thermal parameters have been working consistently, the cooling system is basically normal for a long time. The open cooling system is designed for the superconductor fault current limiter, and the operation parameters and liquid nitrogen consumption are the same as designed. Because the liquid nitrogen cooling system and demonstration stage, the reliability of prototype model of superconductor power equipment is lower. Maintenance experience proves that the reliability of cooling system and the optimization of the whole system are the main aspects to determine the reliability of the HTS power devices. Data of operation, test and maintenance of the two sets of HTS power equipment are reported and analyzed in this article. It will provide important reference for the research and application of HTS power equipment.


Xiao H.,Xi'an Jiaotong University | Qiu J.,Xi'an Jiaotong University | Wang S.,Xi'an Jiaotong University | Zhang Q.,Xi'an Jiaotong University | And 4 more authors.
IEEE Transactions on Magnetics | Year: 2011

Saturated Core High Temperature Superconducting (HTS) Fault Current Limiter (FCL) is one kind of limiters that can work effectively on short-circuit current limitation. In this paper, an equivalent circuit model depending on ac coil of HTS FCL is built for voltage distribution analysis under transient overvoltage. The equivalent circuit components, such as the capacitances and inductances, are calculated by using finite element method. The voltage distribution and oscillation analysis of ac coil may benefit to the insulation design of HTS FCL. © 2011 IEEE.


Xin Y.,Innopower Superconductor Cable | Gong W.Z.,Innopower Superconductor Cable | Zhang J.Y.,Innopower Superconductor Cable
Science China Technological Sciences | Year: 2010

A superconductor has zero resistance at the superconducting state. This unique property creates many exceptional phenomena, of which some are known and the others are not. Our experiments with multilayer high temperature superconductor (HTS) cable samples revealed a new phenomenon that alternating current had a tendency to flow in the inner and outer layers of the cables. We attribute the cause of this phenomenon to the electromagnetic interaction in an infinite electrical conductivity medium and term it "super-proximity- effect". This effect will greatly affect the performance of a multilayer superconducting cable and other superconducting devices which are involved with alternating current transportation. © Science China Press and Springer-Verlag Berlin Heidelberg 2010.


Gong W.Z.,Innopower Superconductor Cable | Zhang J.Y.,Innopower Superconductor Cable | Wu T.Q.,Innopower Superconductor Cable | Niu X.Y.,Innopower Superconductor Cable | Xin Y.,Innopower Superconductor Cable
Journal of Physics: Conference Series | Year: 2010

Saturated Iron Core SFCL (SIC-SFCL) provides an attractive option for the suppression of fault current level in a high voltage or an extra-high capacity electric power network. Different from traditional devices, such as air core reactors, high resistance transformers, etc., the impedance of SIC-SFCL can change from very low in normal power transmission to very high for fault current limiting. The eventual value of the apparent impedance of an SIC-SFCL also varies with the magnitude of the fault current. Therefore, investigating the progressive properties in the current limiting process is key to fully understand the working mechanism and the performance of an SIC-SFCL. A computer simulation model of a 35kV SIC-SFCL was developed to study the limitation progression, and the results of these studies are presented and discussed in this paper. © 2010 IOP Publishing Ltd.


Sun Y.,Tianjin University | Sun Y.,Innopower Superconductor Cable | Gong W.,Innopower Superconductor Cable | Wang J.,Innopower Superconductor Cable | And 3 more authors.
Cryogenics | Year: 2011

Saturated iron core superconducting fault current limiter (SIC-SFCL) is a promising fault current limiting device for high or extra-high voltage power grids. It has low impedance in normal power transmission and turns high impedance when a short-circuit takes place. The dc bias system of a saturated iron core superconducting fault current limiter plays a key role in realizing these features. Our 35 kV/90 MVA SIC-SFCL has been running live-grid since January 2008 at Puji substation in Yunnan, China. In this paper, the working principle of the dc bias system will be introduced and results of artificially imposed short-circuit tests will be provided, which verifies the validity of this system. © 2010 Elsevier Ltd. All rights reserved.


Xu W.,RMIT University | Zhang Y.,North China University of Technology | Xin Y.,Innopower Superconductor Cable
2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013 | Year: 2013

In this paper, a new bridge-type chopper having power electronic switches is proposed for low-voltage superconducting magnetic energy storage (SMES) applications. The energy charge and discharge characteristics of a high temperature superconducting (HTS) SMES device, including transient current through the HTS coil, maximum discharge time duration for the load, effective energy utilization factor, are numerically studied using the circuit analysis and iterative calculation methods, and finally verified by measurements on the developed chopper device. One new theoretical modeling in corporation with a simple digital control method is presented. Experimental and numerical comparisons of the bridge-type and conventional choppers show that the new developed bridge-type chopper is favorable for long-time power compensation with very high operation efficiency in the low-voltage power applications. © 2013 IEEE.


This report studies sales (consumption) of US Superconducting Magnetic Energy Storage (SMES) Systems Market 2016, focuses on the top players, with sales, price, revenue and market share for each player, covering ABB ASG Superconductors SpA American Superconductor Corporation Columbus Superconductors SpA Beijing Innopower Superconductor Cable Bruker Energy & Supercon Technologies Fujikura General Cable Superconductors Hyper Tech Research Split by product types, with sales, revenue, price, market share and growth rate of each type, can be divided into Type I Type II Type III Split by applications, this report focuses on sales, market share and growth rate of Superconducting Magnetic Energy Storage (SMES) Systems in each application, can be divided into Application 1 Application 2 Application 3 United States Superconducting Magnetic Energy Storage (SMES) Systems Market Report 2016 1 Superconducting Magnetic Energy Storage (SMES) Systems Overview 1.1 Product Overview and Scope of Superconducting Magnetic Energy Storage (SMES) Systems 1.2 Classification of Superconducting Magnetic Energy Storage (SMES) Systems 1.2.1 Type I 1.2.2 Type II 1.2.3 Type III 1.3 Application of Superconducting Magnetic Energy Storage (SMES) Systems 1.3.1 Application 1 1.3.2 Application 2 1.3.3 Application 3 1.4 United States Market Size Sales (Value) and Revenue (Volume) of Superconducting Magnetic Energy Storage (SMES) Systems (2011-2021) 1.4.1 United States Superconducting Magnetic Energy Storage (SMES) Systems Sales and Growth Rate (2011-2021) 1.4.2 United States Superconducting Magnetic Energy Storage (SMES) Systems Revenue and Growth Rate (2011-2021) 5 United States Superconducting Magnetic Energy Storage (SMES) Systems Manufacturers Profiles/Analysis 5.1 ABB 5.1.1 Company Basic Information, Manufacturing Base and Competitors 5.1.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.1.2.1 Type I 5.1.2.2 Type II 5.1.3 ABB Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.1.4 Main Business/Business Overview 5.2 ASG Superconductors SpA 5.2.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.2.2.1 Type I 5.2.2.2 Type II 5.2.3 ASG Superconductors SpA Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.2.4 Main Business/Business Overview 5.3 American Superconductor Corporation 5.3.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.3.2.1 Type I 5.3.2.2 Type II 5.3.3 American Superconductor Corporation Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.3.4 Main Business/Business Overview 5.4 Columbus Superconductors SpA 5.4.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.4.2.1 Type I 5.4.2.2 Type II 5.4.3 Columbus Superconductors SpA Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.4.4 Main Business/Business Overview 5.5 Beijing Innopower Superconductor Cable 5.5.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.5.2.1 Type I 5.5.2.2 Type II 5.5.3 Beijing Innopower Superconductor Cable Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.5.4 Main Business/Business Overview 5.6 Bruker Energy & Supercon Technologies 5.6.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.6.2.1 Type I 5.6.2.2 Type II 5.6.3 Bruker Energy & Supercon Technologies Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.6.4 Main Business/Business Overview 5.7 Fujikura 5.7.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.7.2.1 Type I 5.7.2.2 Type II 5.7.3 Fujikura Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.7.4 Main Business/Business Overview 5.8 General Cable Superconductors 5.8.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.8.2.1 Type I 5.8.2.2 Type II 5.8.3 General Cable Superconductors Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.8.4 Main Business/Business Overview 5.9 Hyper Tech Research 5.9.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.9.2.1 Type I 5.9.2.2 Type II 5.9.3 Hyper Tech Research Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.9.4 Main Business/Business Overview 5.10 Luvata U.K. 5.10.2 Superconducting Magnetic Energy Storage (SMES) Systems Product Type, Application and Specification 5.10.2.1 Type I 5.10.2.2 Type II 5.10.3 Luvata U.K. Superconducting Magnetic Energy Storage (SMES) Systems Sales, Revenue, Price and Gross Margin (2011-2016) 5.10.4 Main Business/Business Overview 5.11 Nexans SA 5.12 Southwire Company 5.13 Sumitomo Electric Industries 5.14 Superconductor Technologies 5.15 SuperPower 5.16 SuNam 5.17 Southwire Global QYResearch (http://globalqyresearch.com/ ) is the one spot destination for all your research needs. Global QYResearch holds the repository of quality research reports from numerous publishers across the globe. Our inventory of research reports caters to various industry verticals including Healthcare, Information and Communication Technology (ICT), Technology and Media, Chemicals, Materials, Energy, Heavy Industry, etc. With the complete information about the publishers and the industries they cater to for developing market research reports, we help our clients in making purchase decision by understanding their requirements and suggesting best possible collection matching their needs.

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