Real-Time Monitoring and Control of the Parameters of an Induction Motor
Keywords:PLC, GPRS, control, sinaut micro OPC server, induction motor
AbstractAs a result of technological developments, remote control via communication techniques such as ZigBee, RF, Infrared, Wi-Fi and mobile communication techniques has been widely used in various fields. These techniques have both advantages and disadvantages. GPRS (General Packet Radio Service) communication offers a non-stop, secure and cheap communication to individuals where there is no access to Internet. This study consists of PLC-based, online monitoring and control of the parameters of a widely-used induction motor utilizing the GPRS/GSM (Global System for Mobile Communications) communication technique. The research monitored current values of three phases drawn from the network, voltage values of three phases applied to the induction motor, power factor, rpm (rotation per minute) and operating frequency. The induction motor was operated by keeping the V/f ratio constant via a frequency convertor; a visual user interface was prepared on the Profi-Lab Expert platform, and then presented to the users through the Profi-Lab Web Server program.
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