Patent Number: 6,683,427

Title: Device for controlling an electronically commutated motor

Abstract: The invention relates to a device for controlling an electronically commutated motor (1) comprising P phases and N pairs of poles (5), said device comprising: a circular multipole encoder (4) comprising a main multipole track (4a) and a multipole commutation track (4b) comprising 2*P*N singularities (4b1-4b6) equidistributed angularly; a fixed sensor (6) capable of delivering square digital signals A, B in quadrature and a digital signal C in the form of 2*P*N pulses (TP1-TP6) per revolution of the encoder; a commutation circuit (7) having 2*P*N switches (T1-T6); a control circuit (8) for the commutation circuit (7) which: from the signal c supplies commutation signals for the switches (T1-T6); and from the signals A, B and according to a first current set point (I*) defines a second current set point (Iref) which controls the current (Im) supplying the phase windings of the motor (1).

Inventors: Desbiolles; Pascal (Thorens-Glieres, FR), Nicot; Christophe (Quintal, FR), Friz; Achim (Seynod, FR)

Assignee: S.N.R. Roulements

International Classification: B62D 15/00 (20060101); B62D 15/02 (20060101); H02P 6/14 (20060101); H02P 6/16 (20060101); H02P 007/06 ()

Expiration Date: 01/27/2021