Patent ID: 6313603
Filing Date: 2001-11-06
Classification: H02P

Abstract:
A method of regulating a rotary machine powered by a voltage inverter receiving as an input a discrete control voltage generated by a regulator, wherein the regulator receives as inputs, an electromagnetic torque reference value and at least one sampled signal representative of the electromagnetic torque of the rotary machine, and predicts at each sampling instant an electromagnetic torque value at a following sampling instant to modify the control voltage, the method comprising:servo-controlling an electromagnetic torque of the rotary machine based on said electromagnetic torque reference value and said sampled signal, said step of servo-controlling the electromagentic torque comprising:computing a discrete model of a system comprising the machine and the inverter so as to establish a variation of electromagnetic torque between two sampling instants in the form of a first term corresponding to free variation of the system from a state corresponding to the sampling instant and in the absence of a control voltage, and a second term corresponding to variation of the system in response to the control signal; andmodifying the control voltage to vary the electromagnetic torque of the machine a value corresponding to free variation of the torque towards the electromagnetic torque reference value.