DEVELOPMENT OF THE GENERALIZED METHODOLOGY FOR DEFINITION OF THE MAIN ENERGY PARAMETERS AND CHARACTERISTICS OF ASYNCHRONOUS ELECTROPROWATERS USING THE SOFTWARE OF MATLAB
Abstract
The paper presents the development of a generalized technique for determining the main
energy characteristics (cos (φ) (t) and η (t)) of frequency electric drives under different operating conditions
- starting at idle and under load. The development of two methods for determining the dependences cos (φ)
(t) and η (t) is shown on the example of the development of two variants of models of vector control systemsfor the two-phase AD model of the coordinate axes d-q and the finished three-phase model taken from the
SimPowerSystems libraries. The development of the first method was based on SimPowerSystems prefabricated units, which allow determining the active and reactive powers based on known phase currents and voltages. The development of the second generalized method was based on the possibility of directly determin ing the dependences cos (φ) (t) and η (t) on the components of the effective values of the phase vectors of the
stator voltages and currents and the angle between them. A comparative evaluation of the obtained dependences cos (φ) (t) and η (t) was carried out according to the proposed two methods realized in the form of a
model that were applied to two variants of models of the vector control system of an induction motor with a
squirrel-cage rotor.