DEVICE AND METHOD FOR CONTROL OF DRIVE SYSTEM FROM ELECTRIC MOTOR Russian patent published in 2010 - IPC H02P6/08 H02P6/14 H02P6/16 H02P27/08 B60W10/08 

FIELD: electricity.

SUBSTANCE: invention may be used in system of drive, in which mode of control switches between mode of PWM-control and mode of control of rectangular-pulse voltage independently on type of electric motor. In method and device of system drive control from electric mode in mode of control of rectangular-pulse voltage control of rotation torque is carried out, by control of feedback, when phase (Δv) of rectangular-pulse voltage is corrected on the basis of deviation of estimated value (Trq) of rotation torque from specified value (Trqcom) of rotation torque. Part (420) for estimation of rotation torque calculates estimated value (Trq) of rotation torque, using currents (Id, Iq) of electric motor calculated on the basis of values measured by current sensors (24) and position sensor (25), and also in case of PWM control mode. Namely, in process of electric mode control, quantitative estimate of condition is used (quantitative estimation defined by sensors) for AC electric motor (M1) both in mode of rectangular-pulse voltage control and in mode of PWM control.

EFFECT: reduced fluctuation of rotation torque in process of control mode switching.

13 cl, 12 dwg