The single-phase induction motors are mainly applied or used at home to drive mechanical loads. One of the problems of induction motors is the frequency of the supply voltage is affected by the load. This paper focuses on optimization of a single-phase induction motors for improved optimal control using a variable capacitance for a 1hp, 50Hz, 4 pole machine. MATLAB/Simulink framework was structured to characterize the physical representation of the study under investigation using a d-q equivalent circuit reference frame technique for the purpose of modeling simulation. The machine input data was used and translated into machine variable. The technique establishes and characterizes the voltage equation, current equations, and torque equation on the view to identify and improve the performance of the motor during the starting phase of the machine. The simulation results show that higher capacitance of capacitor is required in the auxiliary phase circuit. The machines are loaded gradually to drive at constant and varying conditions, to measure and identify performances. The existing capacity of the capacitor (capacitance) were doubled for purpose of simulations of transient and steady state performance of the single-phase induction motor (SPIM) with the rated capacity of 32µF in order to improve the optimal performance of the machine in terms of speed, time etc. thereby making more productions. The results showed that the switching capacitor of the SPIM uses larger starting capacitor value of 32µF, making the machine to reach steady-state operation, this means that increasing the capacity of the load at varying time with the speed of dual capacitor of SPIM, will significantly improve the production time in order to make more profit and performance. Evidently, the dual capacitor placements produce higher torque both in transient and steady state scenarios, including the efficiency of the dual capacitor motor particularly in the steady state reaching up to about 85% of the speed of the motor. Initially, the supply voltage for stator and rotor operates at 230V, for Stator scenario, when the time is = 0.1 seconds, the motor has no external load, because the voltage reduced to -220V at no-load value. When the time operates at t= 0.02 Second, the supply voltage increases to +220V. Similarly, When the time operates at t= 0.03 Second, the supply voltage decreases to -220V then finally, When the time operates at t= 0.04 Second, the supply voltage increase to +220V. The results show that the supply voltages operate at 230V and vary the load torque to find the maximum torque at this reduced voltage.
Voltage equation, Single induction motor, machine variable, Dual capacitor, torque equation.
Otogwung, O. M , Idonibuoye-obu, D. C , Braide, S. L. "Optimization of Single-Phase Induction Motor for Improved Optimal Control" Iconic Research And Engineering Journals Volume 6 Issue 3 2022 Page 67-82
Otogwung, O. M , Idonibuoye-obu, D. C , Braide, S. L. "Optimization of Single-Phase Induction Motor for Improved Optimal Control" Iconic Research And Engineering Journals, 6(3)