Superconducting rotating machine and cooling method thereof
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United States of America Patent
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Aug 7, 2018
Grant Date -
Dec 25, 2014
app pub date -
May 14, 2014
filing date -
May 14, 2013
priority date (Note) -
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Abstract
Provided are a superconducting rotating machine which improves the cooling efficiency of a rotor by using schemes of passively or actively circulating a coolant and a cooling method thereof. The superconducting rotating machine includes a rotor supported rotatably about a rotation axis and including: at least one superconductive coil; and a central cavity; and a cooling apparatus disposed at an exterior of the rotor and configured to communicate with the cavity, wherein the cooling apparatus includes: a condenser configured to condense a gas coolant supplied through a gas coolant supplying pipe to generate a condensed coolant; a coolant circulating unit configured to supply the condensed coolant into the cavity, configured to recover a vapor coolant evaporated in the cavity into the condenser and configured to circulate the condensed coolant; and a forced circulating unit configured to actively circulate the condensed coolant into the cavity in response to the rotor being tilted.
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