Free piston stirling engine control
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United States of America Patent
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Apr 10, 2007
Grant Date -
Feb 10, 2005
app pub date -
Jul 1, 2004
filing date -
Jul 2, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A control system for a Stirling engine including the use of a synchronous power converter ('SPC') which is connected to the terminals of the alternator in a linear alternator/FPSE power system. According to the teachings of the present invention, the attached SPC is small and portable and further ensures that piston and displacer excursion within the system remain within design limits. The system and method are designed such that it is possible to adjust both the voltage amplitude and the waveform frequency at the terminals of the linear alternator. By controlling these operational aspects, both the speed and the range of travel associated with the piston and the displacer in the FPSE can be controlled.
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