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Indirect rotor position sensor for a sinusoidal synchronous reluctance machine
(United States. Patent and Trademark Office, 1995-09-05)
A discrete position sensor elimination technique for a sinusoidally wound synchronous reluctance motor drive uses induced voltage, phase currents, and excitation frequency to estimate rotor position at all speeds, including ...
Method and apparatus for sensing the rotor position of a switched reluctance motor
(United States. Patent and Trademark Office, 1995-04-25)
Apparatus and method for detecting rotor (12) position in a switched reluctance motor (18) having multiple stator phases (A-A', B-B', and C-C'). A multiplexer (48) intermittently connects a known resistor (54) to a ...
Position sensor elimination technique for the switched reluctance motor drive
(United States. Patent and Trademark Office, 1991-12-10)
Rotor position information for a switched reluctance (SR) motor drive is obtained indirectly in response to the motor phase inductance. An oscillator generates a signal having a time period that is a function of the ...
Method and apparatus for sensing the rotor position of a switched reluctance motor without a shaft position sensor
(United States. Patent and Trademark Office, 1994-03-01)
Apparatus and method for detecting rotor (12) position in a switched reluctance motor (18) having multiple stator phases (A--A', B--B', and C--C'). A multiplexer (48) intermittently connects a known resistor (54) to a ...