Achieving efficiency by ensuring vibration-free operation of a solar-powered asynchronous motor

This study investigates the problem of excessive reactive power losses and dynamic instability in single-phase powered asynchronous motors supplied by solar energy systems. To accurately evaluate non-sinusoidal and unbalanced current components-which significantly affect electromagnetic behavior and vibration-related electrical asymmetry-a high-precision electromagnetic current measurement device was developed. Unlike conventional current transformers that saturate under harmonic distortion, the proposed device provides reliable detection of harmonic currents up to the 49th order. Based on the measured signals, an optimized control scheme incorporating phase-shifting inductive elements and capacitor banks was designed. Experimental results show that the proposed method improves the motor’s power balance by 75-80 %, reduces total harmonic distortion (THD) by up to 33.5 %, and decreases voltage asymmetry by 15-16 % under no-load and nominal load conditions. The approach ensures stable operation, enhanced dynamic performance, and more efficient utilization of solar-generated electrical energy. These findings contribute to the development of advanced vibro-electromechanical systems and improved reactive power management in renewable-energy-based motor applications.