SSD operating experience

Daugherty, M. A.; Buckles, W.E.; Knudtson, G.A.; Mann, Darrell; Stephenson, Philip

doi:10.1109/77.233706

Cited by 22 publications

(2 citation statements)

References 4 publications

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“…The applications are mainly for power system load leveling [1], power system stabilizers [2], [3] and voltage support for critical loads [4]. The load leveling is particularly important, since the industrial load can be managed to reduce total electricity cost by maintaining a fixed maximum demand (MD) and power factor, while ensuring that security and reliability of the operation is maintained.…”

Section: Introductionmentioning

confidence: 99%

Improved controller for power conditioner using high-temperature superconducting magnetic energy storage (HTS-SMES)

Aware

Sutanto

2003

IEEE Trans. Appl. Supercond.

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One of the most important functions in a superconducting magnetic energy storage (SMES) system when used for power conditioning, is the ability to charge the super-conducting coil as fast as possible to ensure that it is ready when it is next required. This paper describes a novel controller for a high-temperature SMES (HTS-SMES) that can ensure: 1) fast return of energy to the superconducting coil under constant-current mode and 2) a constant and sinusoidal input supply current irrespective of the varying load demand with and without harmonics. In the new HTS-SMES proposed, two hysteresis controllers are used, one to control the magnitude, phase and the waveform of the ac supply current, and the other is to control a dc chopper to regulate the SMES coil current. The first hysteresis controller ensures that as far as the power utility is concerned, the load appears to the utility system as a constant sinusoidal load with unity power factor irrespective whether the load is distorted or varying in nature. The second hysteresis controller has been designed to regulate the energy in and out of the superconducting coil. A special feature of this controller is its ability to smoothly charge the superconducting coil using constant current charging so that it can be ready for the next discharging operation as soon as possible. Analysis of the circuit operation under hysteresis control is presented in details. Simulation and experimental results are presented demonstrating the feasibility of the proposed power conditioning system. Index Terms-Chopper, hysteresis, inverter, load leveling, power conditioning system (PCS), superconducting magnetic energy systems (SMES).

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Section: Introductionmentioning

confidence: 99%

Improved controller for power conditioner using high-temperature superconducting magnetic energy storage (HTS-SMES)

Aware

Sutanto

2003

IEEE Trans. Appl. Supercond.

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“…Because of their high efficiency and rapid response to power demand, superconducting magnetic energy storage systems (SMES) have been proposed for use in power system load leveling [1], power system stabilizers [2,3], fault current limiter [4,5] and voltage support for critical loads [6].…”

Section: Introductionmentioning

confidence: 99%

Improved controller for High Temperature Super Conducting Magnetic Energy Storage (HTS-SMES)

Sutanto

Aware

2009

2009 International Conference on Applied Superconductivity and Electromagnetic Devices

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Abstract-This paper describes a novel controller for a HighTemperature Superconducting Magnetic Energy Storage (HTS-SMES) that can ensure (a) fast return of energy to the superconducting coil under constant current mode and (b) a constant and sinusoidal input supply current irrespective of the varying load demand with and without harmonics. A special feature of this controller is its ability to smoothly charge the superconducting coil using constant current charging so that it can be ready for the next discharging operation as soon as possible. Analysis of the circuit operation under hysteresis control is presented in details. Simulation and experimental results are presented demonstrating the feasibility of the proposed power conditioning system.

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Superconducting Magnetic Energy Storage ( SMES ) Systems

Yuan

Zhang

2015

Handbook of Clean Energy Systems

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Superconducting magnetic energy storage ( SMES ) systems can store energy in a magnetic field created by a continuous current flowing through a superconducting magnet. Compared to other energy storage systems, SMES systems have a larger power density, fast response time, and long life cycle. Different types of low temperature superconductors ( LTS ) and high temperature superconductors ( HTS ) are compared. A general magnet design methodology, which aims to find the maximum operating current that can be taken by a magnet, is presented. However, for magnets using coated conductors, a more complicated model has to be used because of the shielding currents created by the magnetic field. The Virial theorem is discussed, which limits the maximum energy density in a SMES magnet. The topologies of persistent switch and AC / DC converters have been discussed and compared. In Section 4, an overview of the development history of SMES technologies are discussed. This covers early development of large‐scale SMES for bulk energy storage and recent development of small‐scale SMES for fast‐response applications. Finally, the applications of SMES systems are discussed, which include load leveling, frequency support, and voltage regulations.

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SSD operating experience

Cited by 22 publications

References 4 publications

Improved controller for power conditioner using high-temperature superconducting magnetic energy storage (HTS-SMES)

Improved controller for power conditioner using high-temperature superconducting magnetic energy storage (HTS-SMES)

Improved controller for High Temperature Super Conducting Magnetic Energy Storage (HTS-SMES)

Superconducting Magnetic Energy Storage ( SMES ) Systems

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