Efficiency optimization of an induction machine using optimal flux control

Abstract

This paper presents the efficiency optimization of a variable speed induction machine (VSIM) using an Optimal Flux Control (OFC). To optimize the efficiency, an approach called as Maximum Torque per Ampere (MTA) algorithm was used to provide the constant optimal flux (COF) during the speed control, where the minimisation of the winding losses is considered along the operation. In this paper, the total power and total power loss during machine motoring is presented. The performance of the proposed OFC design is compared with the conventional open-loop scalar-control (OLSC) method. From the finding, it was found that the COF approach provides better performance than the OLSC in terms of settling time, steadystate error and efficiency.

Energy-efficient adjustable speed double inverter-fed woundrotor induction motor drive

“…Electric drive based on double inverter-fed induction motor structural scheme and vector diagram are presented at For double inverter-fed induction motor in steady-state the electrical balance equation of the armature and excitation windings considering [5][7] [9][10][11][12][13] can be written:…”

An energy-efficient scalar control taking core losses into account

“…Experimental results show efficiency increase and losses decrease. Other advanced works have been performed (Sidek et al , 2014; Bozhko et al , 2017) and take into account the magnetic saturation effect.…”