Gas turbine generator with a pre-combustion power turbine
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United States of America Patent
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Aug 30, 2016
Grant Date -
Oct 1, 2015
app pub date -
Mar 28, 2014
filing date -
Mar 28, 2014
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Abstract
A turbine generator uses a common bearing carrier to support a high-speed spool and a low-speed spool, thereby enabling a more axially compact turbine generator design. The high-speed spool includes a high-speed compressor assembly mechanically powered by a high-speed turbine, which receives power from a combustion chamber between the high-speed turbine and the high-speed compressor assembly. The low-speed spool includes a pre-combustion power turbine aerodynamically powered by the compressor assembly and upstream of the combustion chamber. The pre-combustion turbine mechanically powers an electrical generator, which includes coreless stators and a rotor assembly. The stators have a planar configuration to receive axial flux from magnets of the rotor assembly. Optionally, the low-speed spool may include a post-combustion turbine that is arranged downstream of the combustion chamber and that mechanically powers the electrical generator.
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