Variable Speed Control Techniques For Single Phase Ac Motor Essay

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ABSTRACT
This work presents a variable speed control techniques for single phase ac motor. A pulse-width-modulation (PWM) AC chopper changes the value of the supply voltage applied to a single-phase motor. The variable supply voltage gives better speed control of motor. Harmonics generated by unit of speed control are filtered by an input filter circuit. Experimental results would be in 230V and speed control of single-phase motor shows that PWM AC Chopper is simple and cost effective control method compared to better control method to other methods in terms of simplicity and input harmonic content. In this harmonics reduction techniques for designing a Pulse Width Modulation (PWM) AC voltage controller is required. So that Total current Harmonics Distortion (THDi), obtained for to be minimized. In the Main Circuit we have used Insulated Gate Bipolar Transistor (IGBTs) or MOSFET to obtain output waveform as we shown theory of AC voltage controller with PWM techniques. We will be used at the end of project with Microcontroller are presented. We obtained results by the analysis of the AC single phase motor and PWM AC chopper is derived and its behavior of the system is studied by simulation using MATLAB and PROTEUS. The Mains power factor, motor speed, and current are analyzed for different conditions as using many circuits via op-amp, IC 555, optocoupler and ARDUINO. Harmonics analysis of the motor voltage and current are given and compared with phase control techniques.
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