Authors: Yu.P. Filushov, B.V. Palagushkn, V.Yu. Filushov

Title of the article: Linearization of a control system of salient-pole synchronous machine with permanent magnets in the regulation of the energy characteristics

Year: 2019, Issue: 5, Pages: 44-51

Branch of knowledge: 09.05.03 Electrotechnical complexes and systems

Index UDK: 621: 62 - 5. 62 - 51.62 - 55.

DOI: 10.26730/1816-4528-2019-5-44-51

Abstract: The relevance of the work is due to the desire to improve energy efficiency while maintaining the dynamic characteristics of the AC drive. The known solution for the formation of the electromagnetic torque of a synchronous machine with permanent magnets by a current along the transverse axis is characterized by a significant increase in reactive power with an increase in load and speed, which determines the increase in losses in steel, limits the maximum speed and does not provide a minimum of thermal losses in a salient-pole machine. Regulation of the energy properties of the electric drive introduces nonlinearity into the control structure, worsening its dynamic properties, not allowing to adequately counteract the load disturbance which adversely affects the accuracy of regulation, reducing the performance of technological processes. Therefore, the dynamic properties characterizing the efficiency of the AC drive depend on the solution of the linearization problem.
The aim of the work is the linearization of the control system, which provides, along with the formation of the electromagnetic moment, the regulation of the energy properties of a salient-pole synchronous machine with permanent magnets.
Method. The method of inverse model with output linearization is applied for control formation. Elements of the mathematical apparatus of the Lie algebra are used in the synthesis of multidimensional control, where the phase space of the electric machine is considered as the concept of the vector field.
Results. The electric machine is presented in the form of a multidimensional object, in which the output values are the electromagnetic torque and the indicator characterizing the energy properties of the electric drive. The linearization of the control system of a salient-pole synchronous machine is performed. On the basis of the methodology of an integrated approach to the synthesis of multidimensional control, the aperiodic nature of the formation of the electromagnetic moment is provided with simultaneous regulation of the energy properties of the electric drive. Solutions for control actions and output values are obtained in the analytical form.
Summary. The proposed control can be used both in the precision electric drive of metalworking production, and in the vehicle electric drive with an autonomous power source, where in conditions of voltage and current limitation it is important to transfer to the executive mechanism more power and provide greater speed by regulating reactive power.

Key words: Electric motor salient-pole synchronous machine energy properties reactive power multidimensional control linearization diffeomorphisms Lie brackets

Receiving date: 14.08.2019

Publication date: 31.12.2019

CITE DOWNLOAD