Abstract
Problem Statement: This article describes the results of a study into the electromagnetic processes that take place in series motors energized from static inverters. The article also describes the nonlinear functional dependences obtained between the parameters of the mentioned systems and the shaft load and the motor speed. The authors point out why it is important to account for the nonlinear parameters when determining the overall stability of the system and when combining optimal controls. Objectives: The objectives include a functional and parametric synthesis of controls based on dynamic correction of the system ensuring stability and enabling system optimization. Methods Applied: The methods used in this study include a spectral method by Solodovnikov, a dynamic programming method, Matlab Simulink simulation, as well as experimental studies. Originality: The authors propose a nonlinear dynamic correction technique for the ‘inverter-series motor’ system. The technique is based on the functional dependencies of the system coordinates and ensures that the preset dynamic characteristics are reached. Findings: The article contains data indicating a significant impact (causing a 6 to 7 times change in the parameters) produced by the current motor speed. There are also given approximated dependences (with an error of up to 2%) which help form a correction signal using standard linear circuits. Practical Relevance: The results of the study can be useful in the development of electric drive systems for application in electric tools and traction motors, as they can help ensure optimum performance and minimum losses in dynamic modes.
Keywords
Electromagnetic process, series motor, static inverter, Matlab Simulink simulation.
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