Energizing system for a variable reluctance motor
First Claim
1. An energizing system for a variable reluctance motor including a stator having at least one winding for at least one phase and rotor the position of which influences the permeance in each stator winding, comprising(a) means for sensing the inductance of each winding at least during a portion of the revolution of the rotor when a respective phase is energized;
- (b) means for indicating when the inductance of each winding reaches a predetermined inductance Lk ;
(c) rotor position sensing means for sensing the rotor position when said predetermined inductance is reached to define a rotor starting point;
(d) control means for controlling the energized state of said sensed winding in accordance with a rotor position relative to said starting point.
1 Assignment
0 Petitions
Accused Products
Abstract
Drive system for a variable reluctance motor having a pulsated drive. The motor has a stator provided with one or more windings for one or more phases, and a rotor which, upon rotation, co-acts with the magnetic circuit in each stator phase and produces in the magnetic circuit for each stator winding a permeance which changes with changes in the rotor angle. A sensing and control circuit (1-10) senses the inductance in the phase winding (L1, L2, L3) in each phase, at least during a part of a rotor revolution. Upon the indication of a pre-determined inductance Lk, the circuit permits the rotational position of the rotor at which the determined inductance Lk was indicated to constitute a starting point for determining a rotational position θOFF) for changing the energized state of the phase winding.
59 Citations
14 Claims
-
1. An energizing system for a variable reluctance motor including a stator having at least one winding for at least one phase and rotor the position of which influences the permeance in each stator winding, comprising
(a) means for sensing the inductance of each winding at least during a portion of the revolution of the rotor when a respective phase is energized; -
(b) means for indicating when the inductance of each winding reaches a predetermined inductance Lk ; (c) rotor position sensing means for sensing the rotor position when said predetermined inductance is reached to define a rotor starting point; (d) control means for controlling the energized state of said sensed winding in accordance with a rotor position relative to said starting point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification