Terminal Identifier Design For Single Phase AC Motor Using Microcontroller-Based Voltmeter

Ramlan, Muhammad Amirul Faez (2016) Terminal Identifier Design For Single Phase AC Motor Using Microcontroller-Based Voltmeter. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Terminal Identifier Design For Single Phase AC Motor Using Microcontroller-Based Voltmeter.pdf - Submitted Version Download (549kB)

Abstract

This device is developed by using microcontroller based on circuit for terminal identifier of single phase alternate current (AC) motor and purposely to make user can easily identify the terminal motor instantly. Quite often, AC motor manufacturer does not provide marking of motor terminals. Furthermore, there is no standard of wire color motor terminals has been enacted in industry. These problems have obscure the motor terminal identification especially by repair technician during troubleshooting process or motor replacement work. Even though the identification of this motor terminal can be done by using ohmmeter of a multimeter, but it is less appropriate in term of user interface. A user has to measure the resistance across terminal of the motor and decide the terminal labels based on obtained resistance value. This process is time consuming and prone to decision error. Hence, a simpler way of determining the terminals of an AC single phase which posses a better user interface is developed the device is designed to have three probes; first probe is connected to 5v power supply and the other two probes is connected to ground. Each probe is presented by single digit of seven segment display to show the terminal name when the probe is connected to terminal of the motor. These probes also is connected to the analog–to-digital-converter (ADC) port of microcontroller to prepare the identifying algorithm. The probes of the device is connected to testing AC motor, subsequently several inequality rules can be produced based on the obtained ADC value. However, not all possible probe connection to the terminal can be covered by inequality rules, therefore the feature of ‘probe rotation required’ indicator is added. It the end of the project, the developed device successfully identify the motor terminal of single phase AC motor when the probes is connected to the input terminal.

Actions (login required)

View Item