INDUCTOR MOTOR CONTROL METHOD Russian patent published in 1998 - IPC

FIELD: electrical engineering. SUBSTANCE: currents in motor phase windings are formed by supplying voltage pulses to winding within every period of pickup of motor rotor position. To this end, period between two adjacent leading edges of signal of motor rotor position pickup is measured. Time intervals t1 from moment leading edge of signal of motor rotor position pickup appears to beginning of passage and t2 from moment leading edge of signal of motor rotor position pickup develops to end of current period of signal of motor rotor position pickup are calculated during control cycle by formulas: t1 = T/2-A; 2 = T-A-C, where T is duration of past period of signal of motor rotor position pickup; A is advance, C is shortening which represents time intervals. A ≤ A_max = T/NC ≤ T/N1, where N and N1 are constant coefficients. Voltage pulses are formed without use of current pickups and assemblies associated with them. Motor rotation frequency is stabilized by means of adjustment of advance including stabilization by means of self- stabilization effect and without readjustment. EFFECT: enhanced control. 9 cl, 15 dwg