Sensorless speed and torque control of a three-phase induction motor utilizing cascaded H-bridge inverter with unequal selected DC voltage sources (USDCVS) is presented in this study. Several output voltages with minimum distortions and IGBTs are achieved with DC input voltage sources equal to (1, 3, 9) Vdc. The induction motor speed and torque are estimated depending on the instantaneous output phase voltages and currents of the drive circuit. A novel controller circuit is built depending on a modified absolute sinusoidal PWM (MASPWM) technique. Embedded s-function is coded to regenerate switching pulses and get various output levels. Simulation results demonstrate that the USDCVS of the multilevel inverter based on MASPWM technique produces different output levels with acceptable distortion. Also, show an acceptable sensorless speed and torque responses at steady-state and dynamic operation conditions under different speeds and mechanical load torques that explained the strength of the drive and control circuits.
Industries have been moved from conventional control to programmable logic control (PLC). System control, protection and maintenance for 3-induction motor have to be used in safe controlling process rather than human continuous control. This paper simulates a PLC control system for three-phase induction motor through Matlab simulation. The motor is driven by a space vector pulse with modulation (SVPWM), a three-phase voltage source inverter through a PLC controller. PLC control can employ speed and current control besides initiating a protection signal for abnormal current, voltage and temperature. Moreover, it can be used as a helpful tool for continuous monitoring of any quantity corresponding to the controlled motor. To emulate the control program in Matlab/Simulink software, a translation approach is used. It translates the PLC control program into m-file function block. The results reflect a successful PLC translation control through the results of speed, current and torque during load and no-load conditions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.