Cold semiconducting converter, a compatibility device for a superconducting magnet

O.A. Chevtchenko; H.J.G. Krooshoop; M.A. Fedorovsky; H.H.J. ten Kate

doi:10.1007/978-1-4613-0373-2

Cold semiconducting converter, a compatibility device for a superconducting magnet

O.A. Chevtchenko
, H.J.G. Krooshoop
, M.A. Fedorovsky
, H.H.J. ten Kate

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

A method to increase the efficiency of a power system for a superconducting (SC) magnet is presented. The system links a magnet and the mains (which serves as a power source and/or a load). It contains both room and low temperature electrical components.

In order to reduce heat leaks, it is proposed to use a semiconducting converter unit located in the same cryostat and which is connected via high current leads to a magnet and via low current leads to the mains. In the standby mode the temperature of the unit is close to that of a magnet. While operating, the temperature of the unit will rise up to a level normally allowed for such components (~400 K for the switches). The efficiency of the proposed scheme is close to the conventional one which is based on a semiconducting power supply placed at room temperature in combination with retractable current leads.

To demonstrate the approach, we developed such a converter. The performance of the converter unit is demonstrated while ramping a current of a small SC magnet operating at 4 K. Characteristic in- and output currents are 2 A and 300 A respectively. The unit standby temperature is measured to be ~40 K, while the operating temperature is about 300 K. Reasonable energy efficiency is demonstrated even at a low powering voltage.

Original language	English
Title of host publication	Advances in cryogenic engineering
Editors	Peter Kittel
Place of Publication	Boston, MA
Publisher	Springer
Pages	1873-1880
Number of pages	8
Volume	Part A
ISBN (Electronic)	978-1-4613-0373-2
ISBN (Print)	978-1-4613-8022-1
DOIs	https://doi.org/10.1007/978-1-4613-0373-2
Publication status	Published - 26 Sept 1996
Event	1995 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC - Columbus, United States Duration: 17 Jul 1995 → 21 Jul 1995

Publication series

Name	Cryogenic Engineering Conference Publication book series (ACRE)
Publisher	Springer
Volume	41

Conference

Conference	1995 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC
Abbreviated title	CEC/ICMC
Country/Territory	United States
City	Columbus
Period	17/07/95 → 21/07/95

Keywords

n/a OA procedure

Access to Document

10.1007/978-1-4613-0373-2

Cite this

Chevtchenko, O. A., Krooshoop, H. J. G., Fedorovsky, M. A., & ten Kate, H. H. J. (1996). Cold semiconducting converter, a compatibility device for a superconducting magnet. In P. Kittel (Ed.), Advances in cryogenic engineering (Vol. Part A, pp. 1873-1880). (Cryogenic Engineering Conference Publication book series (ACRE); Vol. 41). Springer. https://doi.org/10.1007/978-1-4613-0373-2

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title = "Cold semiconducting converter, a compatibility device for a superconducting magnet",

abstract = "A method to increase the efficiency of a power system for a superconducting (SC) magnet is presented. The system links a magnet and the mains (which serves as a power source and/or a load). It contains both room and low temperature electrical components. In order to reduce heat leaks, it is proposed to use a semiconducting converter unit located in the same cryostat and which is connected via high current leads to a magnet and via low current leads to the mains. In the standby mode the temperature of the unit is close to that of a magnet. While operating, the temperature of the unit will rise up to a level normally allowed for such components (\textasciitilde{}400 K for the switches). The efficiency of the proposed scheme is close to the conventional one which is based on a semiconducting power supply placed at room temperature in combination with retractable current leads. To demonstrate the approach, we developed such a converter. The performance of the converter unit is demonstrated while ramping a current of a small SC magnet operating at 4 K. Characteristic in- and output currents are 2 A and 300 A respectively. The unit standby temperature is measured to be \textasciitilde{}40 K, while the operating temperature is about 300 K. Reasonable energy efficiency is demonstrated even at a low powering voltage.",

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author = "O.A. Chevtchenko and H.J.G. Krooshoop and M.A. Fedorovsky and \{ten Kate\}, H.H.J.",

year = "1996",

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doi = "10.1007/978-1-4613-0373-2",

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Chevtchenko, OA, Krooshoop, HJG, Fedorovsky, MA & ten Kate, HHJ 1996, Cold semiconducting converter, a compatibility device for a superconducting magnet. in P Kittel (ed.), Advances in cryogenic engineering. vol. Part A, Cryogenic Engineering Conference Publication book series (ACRE), vol. 41, Springer, Boston, MA, pp. 1873-1880, 1995 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC, Columbus, Ohio, United States, 17/07/95. https://doi.org/10.1007/978-1-4613-0373-2

Cold semiconducting converter, a compatibility device for a superconducting magnet. / Chevtchenko, O.A.; Krooshoop, H.J.G.; Fedorovsky, M.A. et al.
Advances in cryogenic engineering. ed. / Peter Kittel. Vol. Part A Boston, MA: Springer, 1996. p. 1873-1880 (Cryogenic Engineering Conference Publication book series (ACRE); Vol. 41).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Cold semiconducting converter, a compatibility device for a superconducting magnet

AU - Chevtchenko, O.A.

AU - Krooshoop, H.J.G.

AU - Fedorovsky, M.A.

AU - ten Kate, H.H.J.

PY - 1996/9/26

Y1 - 1996/9/26

N2 - A method to increase the efficiency of a power system for a superconducting (SC) magnet is presented. The system links a magnet and the mains (which serves as a power source and/or a load). It contains both room and low temperature electrical components. In order to reduce heat leaks, it is proposed to use a semiconducting converter unit located in the same cryostat and which is connected via high current leads to a magnet and via low current leads to the mains. In the standby mode the temperature of the unit is close to that of a magnet. While operating, the temperature of the unit will rise up to a level normally allowed for such components (~400 K for the switches). The efficiency of the proposed scheme is close to the conventional one which is based on a semiconducting power supply placed at room temperature in combination with retractable current leads. To demonstrate the approach, we developed such a converter. The performance of the converter unit is demonstrated while ramping a current of a small SC magnet operating at 4 K. Characteristic in- and output currents are 2 A and 300 A respectively. The unit standby temperature is measured to be ~40 K, while the operating temperature is about 300 K. Reasonable energy efficiency is demonstrated even at a low powering voltage.

AB - A method to increase the efficiency of a power system for a superconducting (SC) magnet is presented. The system links a magnet and the mains (which serves as a power source and/or a load). It contains both room and low temperature electrical components. In order to reduce heat leaks, it is proposed to use a semiconducting converter unit located in the same cryostat and which is connected via high current leads to a magnet and via low current leads to the mains. In the standby mode the temperature of the unit is close to that of a magnet. While operating, the temperature of the unit will rise up to a level normally allowed for such components (~400 K for the switches). The efficiency of the proposed scheme is close to the conventional one which is based on a semiconducting power supply placed at room temperature in combination with retractable current leads. To demonstrate the approach, we developed such a converter. The performance of the converter unit is demonstrated while ramping a current of a small SC magnet operating at 4 K. Characteristic in- and output currents are 2 A and 300 A respectively. The unit standby temperature is measured to be ~40 K, while the operating temperature is about 300 K. Reasonable energy efficiency is demonstrated even at a low powering voltage.

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U2 - 10.1007/978-1-4613-0373-2

DO - 10.1007/978-1-4613-0373-2

M3 - Conference contribution

SN - 978-1-4613-8022-1

VL - Part A

T3 - Cryogenic Engineering Conference Publication book series (ACRE)

SP - 1873

EP - 1880

BT - Advances in cryogenic engineering

A2 - Kittel, Peter

PB - Springer

CY - Boston, MA

T2 - 1995 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC

Y2 - 17 July 1995 through 21 July 1995

ER -

Cold semiconducting converter, a compatibility device for a superconducting magnet

Abstract

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Keywords

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