Design and Testing of a 1000-hp High-Temperature Superconducting Motor

Dombrovski, V.; Driscoll, D.; Shoykhet, B.; Umans, S.D.; Zevchek, J.K.

doi:10.1109/tec.2005.847946

Cited by 22 publications

(7 citation statements)

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“…These simulations showed certain common features that will be illustrated here on one particular example of 2-D model of 1000 hp HTS motor [12] racetrack coil with first generation (1-G) HTS wire. The thermal model cross-section is shown in Fig.…”

Section: Fea Analysis Of Current Induced Quench In Hts Coilsmentioning

confidence: 64%

“…(8)-(11) are the system of non-linear equations in which the parameters are known and parameters are to be determined. After that the loss in the superconducting tape (per unit length of the tape) is found (12) where is the common value of the electric field in the superconductor and the stabilizer. In the process of FEA simulation the solution of equations Eqs.…”

Section: General Modelmentioning

confidence: 99%

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Quench in High-Temperature Superconducting Motor Field Coils: Computer Simulations and Comparison With Experiments

Shoykhet

Umans

2007

IEEE Trans. Appl. Supercond.

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For high temperature superconducting (HTS) motor field coils two types of quench initiation are of practical importance. The first type will be referred to as current induced quench (CIQ). It typically occurs during coil or assembled rotor testing, when the current is increased in small increments until the quench is detected. The current at which the quench starts is referred to as the quench current q [1]-[7]. The objective of these experiments is to establish actual limits of operational conditions. The second type will be referred to as temperature induced quench (TIQ) and it is caused by failure or malfunctioning of the cooling system. The examples include vacuum deterioration, cryocooler failure etc. Numerous CIQ experiments [1]-[8], [10] have showed a certain pattern of quench event, including a well defined q , slow near-linear increase with respect to time of coil voltage and temperature with subsequent transition to fast non-linear voltage and temperature growth. TIQ experiments [10] showed the same behavior when coil cooling system was shut down while the current was maintained constant. The presented here work is a computational 2-D and 3-D Finite Element Analysis (FEA) study of CIQ and TIQ in HTS coils. The effects of magnetic field, non-homogeneity of tape properties, current sharing and amount of stabilizer are studied. It is shown that the formation and propagation of the normal zone is preceded by the process that we chose to call pre-quench instability. The pre-quench instability starts when the current exceeds q and demonstrates experimentally observed features mentioned above. It is shown that with an insufficient amount of stabilizer for second generation (2-G) HTS tapes the pre-quench instability may be practically undetectable. The comparison with some of the experiments [8], [10] is presented. We intensively used the concepts developed in articles [1]-[6]. Many (but not all) our conclusions are in agreement with [1]-[6]. I. GENERAL MODELT HE model includes the superconducting coils and other relevant components of the cryostat, such as the coil support structure, cooling system and the current leads. In any quench model of HTS motor coils the following three factors should be present: the effect of magnetic field on the dissipation in the superconductor, the effect of the cooling system and the effect of heat sources other than the dissipation in the superconductor.Obviously the magnetic field in HTS coil depends on the whole HTS winding, not just the coil itself, and will be different Manuscript

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Section: Fea Analysis Of Current Induced Quench In Hts Coilsmentioning

confidence: 64%

Section: General Modelmentioning

confidence: 99%

Quench in High-Temperature Superconducting Motor Field Coils: Computer Simulations and Comparison With Experiments

Shoykhet

Umans

2007

IEEE Trans. Appl. Supercond.

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“…Research in the application of HTS materials to electric motors has lead to a number of HTS motor prototypes [2][3][4][5][6] yet no industrial HTS motor product has yet been introduced. These motor demonstrations have been synchronous motors with HTS field windings, on the rotor.…”

Section: A Project Scopementioning

confidence: 99%

“…Technical and commercial hurdles to industrial HTS motor product introduction and customer acceptance include 1) the high cost of HTS wire and the cryogenic cooling system components, 2) customer concerns about reliability of HTS motors, and 3) the ability to attain the loss reduction potential of large HTS motors. Reliance Electric has demonstrated a number of HTS based electric motors up to a 1000 hp, variable speed synchronous motor [3,4] with an HTS field winding in the year 2000. In 2001 this motor was tested to 1600 hp with a sinusoidal (constant frequency) supply.…”

Section: A Project Scopementioning

confidence: 99%

Development of Ultra-Efficient Electric Motors Final Technical Report Covering work from April 2002 through September 2007

Schiferl¹

2008

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“…Research directed at the development of economically viable HTS based industrial motors has been going on for over 18 years [1][2][3][4][5][6][7] and has included the demonstration of a number of motor prototypes in ratings up to 5000 hp (3730 kW). Superconducting technology promises substantial loss reduction for motors in the rating range of 5000 hp and above accompanied with motor volume reduction.…”

Section: Introductionmentioning

confidence: 99%

High Temperature Superconducting Synchronous Motors: Economic Issues for Industrial Applications

Schiferl

Flory

Umans

et al. 2006

2006 Record of Conference Papers - IEEE Industry Applications Society 53rd Annual Petroleum and Chemical Industry Conference

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High temperature superconducting materials offer the capability to reduce losses in large industrial motors (greater than 1000 horsepower in rating) by 50%. This loss reduction can be accompanied by an overall motor size reduction. The application of high temperature superconductors in high horsepower electric motors is described and the potential benefits of these motors are discussed. The economic viability of high temperature superconducting based electric motors for industrial applications depends upon the cost of the superconducting wire. A discussion of wire component costs for readily available first generation high temperature superconducting wire as well as the future, lower cost, second generation high temperature superconducting wire is presented showing that economically viable high temperature superconducting based motors will require second generation wire. A review of the state-of-the-art in industrial motor lab prototype demonstrations of high temperature superconducting based motors is presented showing the rapid advancement of this technology.The application advantages of high temperature superconducting motors in pump and fan systems are also discussed.

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Design and Testing of a 1000-hp High-Temperature Superconducting Motor

Cited by 22 publications

References 1 publication

Quench in High-Temperature Superconducting Motor Field Coils: Computer Simulations and Comparison With Experiments

Quench in High-Temperature Superconducting Motor Field Coils: Computer Simulations and Comparison With Experiments

Development of Ultra-Efficient Electric Motors Final Technical Report Covering work from April 2002 through September 2007

High Temperature Superconducting Synchronous Motors: Economic Issues for Industrial Applications

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