A high-power magnetically switched superconducting rectifier operating at 5 Hz

G.B.J. Mulder, H.J.G. Krooshoop, A. Nijhuis, H.H.J. ten Kate, L.J.M. van de Klundert

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Abstract

Above a certain current level, the use of a superconducting rectifier as a cryogenic current source offers advantages compared to the use of a power supply at room temperature which requires large current feed-throughs into the cryostat. In some cases, the power of such a rectifier is immaterial, for example if it is to be used as a current supply for short test samples with low inductances. Usually, however, a rectifier is intended to energize large superconducting magnets, so the maximum power available becomes an important parameter since it determines the loading time. One method of increasing the power of a rectifier is to raise the operating frequency. In this respect, magnetically controlled switches with very fast switching times are preferable to thermally controlled ones. This paper reports on the design, as well as the experimental results of a magnetically switched full-wave superconducting rectifier. Once this rectifier is brought to its design frequency of 5 Hz, the average power delivered to the cryogenic load will be 500 W.
Original languageEnglish
Pages (from-to)595-598
JournalIEEE transactions on magnetics
Volume23
Issue number2
DOIs
Publication statusPublished - 1987

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Cryogenics
Cryostats
Superconducting magnets
Inductance
Switches
Temperature

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title = "A high-power magnetically switched superconducting rectifier operating at 5 Hz",
abstract = "Above a certain current level, the use of a superconducting rectifier as a cryogenic current source offers advantages compared to the use of a power supply at room temperature which requires large current feed-throughs into the cryostat. In some cases, the power of such a rectifier is immaterial, for example if it is to be used as a current supply for short test samples with low inductances. Usually, however, a rectifier is intended to energize large superconducting magnets, so the maximum power available becomes an important parameter since it determines the loading time. One method of increasing the power of a rectifier is to raise the operating frequency. In this respect, magnetically controlled switches with very fast switching times are preferable to thermally controlled ones. This paper reports on the design, as well as the experimental results of a magnetically switched full-wave superconducting rectifier. Once this rectifier is brought to its design frequency of 5 Hz, the average power delivered to the cryogenic load will be 500 W.",
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A high-power magnetically switched superconducting rectifier operating at 5 Hz. / Mulder, G.B.J.; Krooshoop, H.J.G.; Nijhuis, A.; ten Kate, H.H.J.; van de Klundert, L.J.M.

In: IEEE transactions on magnetics, Vol. 23, No. 2, 1987, p. 595-598.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - A high-power magnetically switched superconducting rectifier operating at 5 Hz

AU - Mulder, G.B.J.

AU - Krooshoop, H.J.G.

AU - Nijhuis, A.

AU - ten Kate, H.H.J.

AU - van de Klundert, L.J.M.

PY - 1987

Y1 - 1987

N2 - Above a certain current level, the use of a superconducting rectifier as a cryogenic current source offers advantages compared to the use of a power supply at room temperature which requires large current feed-throughs into the cryostat. In some cases, the power of such a rectifier is immaterial, for example if it is to be used as a current supply for short test samples with low inductances. Usually, however, a rectifier is intended to energize large superconducting magnets, so the maximum power available becomes an important parameter since it determines the loading time. One method of increasing the power of a rectifier is to raise the operating frequency. In this respect, magnetically controlled switches with very fast switching times are preferable to thermally controlled ones. This paper reports on the design, as well as the experimental results of a magnetically switched full-wave superconducting rectifier. Once this rectifier is brought to its design frequency of 5 Hz, the average power delivered to the cryogenic load will be 500 W.

AB - Above a certain current level, the use of a superconducting rectifier as a cryogenic current source offers advantages compared to the use of a power supply at room temperature which requires large current feed-throughs into the cryostat. In some cases, the power of such a rectifier is immaterial, for example if it is to be used as a current supply for short test samples with low inductances. Usually, however, a rectifier is intended to energize large superconducting magnets, so the maximum power available becomes an important parameter since it determines the loading time. One method of increasing the power of a rectifier is to raise the operating frequency. In this respect, magnetically controlled switches with very fast switching times are preferable to thermally controlled ones. This paper reports on the design, as well as the experimental results of a magnetically switched full-wave superconducting rectifier. Once this rectifier is brought to its design frequency of 5 Hz, the average power delivered to the cryogenic load will be 500 W.

U2 - 10.1109/TMAG.1987.1064965

DO - 10.1109/TMAG.1987.1064965

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