This work reports the design and experimental assessment of a portable electrical measurement platform that uses Internet of Things (IoT) technology for continuous measurement and remote observation. The prototype combines 40 W and 100 W resistive lamps, an ESP32 controller, a PZEM-016 energy sensor, and a cloud dashboard to collect voltage, current, and power data. The main contribution is the integration of conventional electrical measurement with IoT data acquisition, remote supervision, and automatic recording in one portable unit. Performance was examined experimentally with series and parallel circuits and different load arrangements. Readings from the IoT module were checked against conventional instruments, and values were calculated from Ohm's law and the electrical power relation. The prototype reproduced the electrical behaviour of both circuit arrangements. The series connection produced unequal voltage sharing and much lower power delivery, whereas the parallel connection kept the supply voltage nearly constant and delivered substantially greater power. Across the tested quantities, the difference between IoT and reference readings was below 5%. The system also supports live visualisation, remote access, and automatic storage of measurement records, indicating its suitability for electrical engineering measurement and system analysis.
S. Haryudo, Widi Ariwibowo, Ervin Yohanes et al.· E3S Web of Conferences· 0 citations
Single-phase induction motors experience high inrush current during the starting process, which can degrade power quality and accelerate electrical component deterioration. This research aims to design and evaluate an Arduino Nano–based soft starter system for a single-phase induction motor to limit the starting current. The proposed method employs stepwise series resistance control using relay modules driven by the Arduino Nano, while electrical parameters including voltage, current, and power are monitored in real time using a PZEM-004T sensor. Experimental tests were conducted by comparing the motor starting current before and after the implementation of the soft starter under several operating conditions. The results demonstrate that the proposed system is able to reduce the starting current by 15%–20% compared to direct-on-line operation, with stable and consistent current reduction characteristics. The analysis indicates that the current limitation effectively reduces electrical stress on the motor without adversely affecting the acceleration process. It can be concluded that the developed soft starter system successfully meets the research objectives and is suitable as a simple and cost-effective solution for controlling the starting current of single-phase induction motors.
Silvi Nur Rakhman Nisa', Ibrohim Ibrohim, Tri Rijano et al.· Jurnal Tekno Insentif· 0 citations
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