A Low-Cost IoT Sensors Network for Monitoring Three-Phase Induction Motor Mechanical Power Adopting an Indirect Measuring Method

Abstract

Three-phase induction motors are widely diffused in the industrial environment. Many times, the rated power of three-phase induction motors is not properly chosen causing incorrect operating conditions from an energetic point of view. Monitoring the mechanical dimension of a new motor is helpful, should an existing motor need to be replaced. This paper presents an IoT sensors network for monitoring the mechanical power produced by three-phase induction motors, adopting an indirect measuring method. The proposed technique can be easily adopted to monitor the mechanical power using only one line of current transducer, reducing the cost of the monitoring system. The proposed indirect measurement technique has been implemented on a low-cost IoT system, based on a Photon Particle SoC. The results show that the proposed IoT system can estimate the mechanical power with a relative error of within 8%.

Condition monitoring of disconnecting switch opening and closing motor based on electromagnetic transient

“…[11]. According to different purposes, determine the indicators and monitoring methods that need to be monitored [12].…”

Analysis of Interharmonics Generation in Induction Motors Driven by Variable Frequency Drives and AC Choppers

“…Investigations performed on motor 1 and motor 2 with soft starters and VFDs were with open loop control.For the experiments in this paper, the voltages of one of the phases to ground each motor were measured using a ZMPT101B voltage sensor previously calibrated with a Keithley DMM6500 multimeter. The input current measurements in the VFDs were made using an SCT-013-000 non-invasive AC current sensor, which has been widely used in the analysis of electrical current signals in photovoltaic systems and induction motors[76][77][78] and they were also previously calibrated. The signal acquisition was performed using a National Instruments DAQ-6009 with Labview 2021 software.…”