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US 7,072,778 B2Granted
Method and system for determining a rotor position in a wound field DC motor
AssigneeSTMicroelectronics S.r.l.
InventorDavid F. Swanson
Life of this patent
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AssigneeSTMicroelectronics S.r.l.
InventorDavid F. Swanson
Estimating the term…
A method for determining a rotor position in a DC motor having a plurality of windings, including a rotor winding and a plurality of stator windings begins with producing a changing current flow in a pulsed winding to induce a response signal in other windings of the motor. The pulsed winding may be the rotor winding or selected ones of the stator windings. If the pulsed winding is the rotor winding, response signals induced in at least two of the stator windings are analyzed compute the rotor position. If the pulsed winding is the stator winding, response signals induced from pulsing at least two stator windings are sensed in the rotor winding and analyzed compute the rotor position. A system for computing a rotor position may include comparators for comparing induced response signals in stator windings.
A method for determining a rotor position in a DC motor having a plurality of windings, including a rotor winding and a plurality of stator windings, comprising the steps of:
A system for determining a rotor position in an automobile alternator having a plurality of windings, including a wound field rotor winding and a plurality of wye-connected stator windings, the system comprising:
A system for determining a rotor position in a motor having a plurality of windings, including a wound field rotor winding and a plurality of wye-connected stator windings, the system comprising:
Dependencies are inferred from the claim text.