Improved Performance Analysis of Single-phase Line Start Synchronous Reluctance Motor Derived from Induction Motor

Energy efficiency is an essential aspect of motor technologies. The replacement of conventional Single Phase Induction Motor (SPIM) by Permanent Magnet Synchronous Motor (PMSM), Synchronous Reluctance Motor (SynRM), or Switched Reluctance Motor (SRM) for energy-efficient operation leads to high capital expenses. This paper presents a cost-effective design method to improve the efficiency of the existing SPIM. It implements a novel idea by transforming it to Line Start Synchronous Reluctance Motor (LS-SynRM). A rotor of 0.5 HP, SPIM is successfully redesigned using finite element analysis (FEA). A comprehensive parametric sensitivity analysis in terms of barrier position and width focused on the work. Moreover, introducing a permanent magnet in the rotor barrier has also been investigated. Parametric analysis determines the optimum size of the permanent magnet. However, the best-fit significant rotor parameters have been estimated. Results revealed substantial improvement in the performance of derived LS-SynRM and Permanent Magnet Assisted LS-SynRM (PMaLS-SynRM).