The development of AC voltage controller using microcontroller-based solid state relay

Abdul Aziz, Siti Nur Adibah (2023) The development of AC voltage controller using microcontroller-based solid state relay. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

An AC voltage controller is a device that can control the RMS voltage of AC voltage. It has many applications, such as motor speed control, light dimmer and heater control. A solid state relay (SSR) is a type of electronic switching device that is powered by an external voltage (AC or DC). SSRs perform the same job as electromechanical relays, except they have no moving parts and last longer. In this project, an AC voltage controller will be developed by using SSR that will be connected to Arduino microcontroller. The system uses a microcontroller as its control unit, which interfaces with a solid-state relay to control the output of AC voltage. The developed device is tested to AC bulb and AC motor to verify its efficiency. It is found that the device is able to control the speed of AC motor but not suitable to control AC bulb due to flicker problem.

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