An Asynchronous Electric Drive with the Indirect Control of the Output Variables

The article gives a mathematical description of an asynchronous motor with a device of indirect control of the electromagnetic torque and the angular velocity of the asynchronous motor in the electric drive that allows to prove on its basis the method of monitoring the output variables of the asynchronous electric motor. The simulation model of an asynchronous motor with a device of indirect control of the output variables of the asynchronous motor and the main results of the study have been given

Mathematical Description of an Asynchronous Motor with the Indirect Control of the Output Mechanical Variables

The article gives the mathematical description of an asynchronous motor with the indirect control of the output mechanical variables of an asynchronous motor in the electric drive. To determine the electromagnetic torque and angular velocity of the asynchronous motor in the electric drive the mathematical description is used in which the values are determined by the readings of the motor and easily measured values by means of known in practice devices. The proposed in the article the mathematical description for the indirect measuring the electromagnetic torque and angular velocity of the asynchronous motor in the electric drive does not contain the integral components that introduce the great error into the value of the controlled electromagnetic torque and angular velocity

Functional Control Synthesis of Single-Phase Low Power Motor Drives

In the paper an electric drive system of series-wound universal motor powered by semiconductor converter is considered.The system characteristics and calculation procedure using spectral method of Solodovnikov and aligning procedure areshown. We derived and displayed expressions for two-dimensional non-stationary transfer functions and non-stationaryspectral characteristics of output variables of automated control system of single-phase series-wound universal motorpowered by semiconductor converter. We also show results of electromagnetic calculation of the electric drive system ofseries-wound universal motor powered by semiconductor converter for various firing angles ? of the converter, as welldependences of conduction angle ?t for varied values of rotational speed ? and load torque on the shaft of the moto