Electric marine propulsion employing switched reluctance motor drive
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United States of America Patent
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Oct 28, 2003
Grant Date -
N/A
app pub date -
Mar 31, 2000
filing date -
Mar 31, 2000
priority date (Note) -
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Abstract
A propulsion unit for a watercraft including a prop which is adapted for producing thrust when rotated, and an electric motor drivingly coupled to the prop. The electric motor is of the switched reluctance type which includes a stator, formed of a plurality of windings, and a rotor having a plurality of poles about the circumference of the rotor. The stator windings are divided into a plurality of phases which are sequentially energized by electric current. A controller is coupled to the electric motor to determine the order and timing of phase energization. Proper sequencing of the phase energization creates a dynamic magnetic field inducing the rotor to rotate accordingly.
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