Voltage Control System for a 3-Phase Induction Generator Using PLC

Abstract

Induction motors are commonly used in power generation systems due to their ease of maintenance and the fact that their primary power source comes from renewable energy. However, one of the key challenges faced in such systems is the instability of the voltage output, which is often affected by varying load conditions. The objective of this paper is to explore methods for stabilizing the voltage output of a 3-phase induction generator using a PLC-based control system. To achieve this, a single-phase inverter operating at 50 Hz frequency is employed to regulate the speed of the induction motor. The voltage stabilization of the 3-phase generator is managed through an inverter circuit. The inverter is responsible for controlling the input power, whether it is 3-phase AC or 1-phase AC, in order to regulate the output frequency. The control system is implemented using CX-Programmer, which facilitates the control of the induction motor's speed via the inverter. The system allows for a controllable frequency range from 5 Hz to 60 Hz, resulting in motor speeds ranging from 124 rpm to 1441 rpm.