This paper presents a novel topology of interline unified power quality conditioner (IUPQC) for multi-bus/multi-feeder systems, capable of compensating both voltage and current imperfections simultaneously for power quality improvement. In this system, four voltage-source converters (VSC) with multilevel configuration are considered and space vector pulse width modulation is used in hexagonal coordinate system to reduce the complexity in generating switching pulses. In the proposed IUPQC, all converters share a common dc-link capacitor. Hence, power can be transferred from healthy feeder to adjacent feeders for compensation of sag/swell and current/voltage harmonics. This IUPQC is implemented between two feeders with hybrid renewable energy system as one of the feeders. The performance of the proposed system for various power quality problems is analyzed and presented using MATALB/SIMULINK. INDEX TERMS Grid integration, multi-feeder systems, multi-level converters, power quality improvement, renewable energy systems.
Agriculture robot is used for operations like ploughing, seeding, sprinkling water and to detect humidity, obstacles using sensors. To establish communication, Bluetooth module is used and is controlled using app. DC motors are used to drive wheels. Ploughing, seeding mechanism are performed with the help of motors. Watering can be done with the help of relay ON. Humidity sensor detects moisture content and ultrasonic sensor is used for obstacle detection and buzzer is used to give an alert. Agribot automates most of farming activities and reduce manual work which helps farmers to save money. It requires low operations cost and increases productivity which also saves time and energy of farmers. Major disadvantage is Agribot requires higher investment which is not affordable to all and is complex to use. Agribot can be used in farming activities such as crop monitoring and analysis, fertilizing, picking and harvesting.
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