Monitoring the condition of three-phase induction motor by using LabVIEW
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Date
2017-06
Authors
Muhammad Faiz Muzaini Abd Razak
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Abstract
Monitoring the energy used by consumer has been introduced to worldwide since 1980 in United Kingdom. Since then, meter needed has been increased and nowadays smart meter has been created to ease people to know how much energy they used. The biggest problem of metering is THD which could disturb the signal received by the meter from power supply. Furthermore, an equipment needed to show the waveform of sinusoidal of voltage and current so that we can see if noise or distortion is high or low. This might disturb the voltage and current that should be monitored by the meter. In this project, a LabVIEW program will show the graph waveform and metering the voltage signal and current signal using NI USB6009 board. The information signal from attenuation circuit will be connected to NI USB6009 board before the signal sent to LabVIEW. The reason of choosing LabVIEW to monitor because of low percentage error and easy to use and understand. LabVIEW also can work in both single-phase and three-phase system. In conclusion the design of monitoring process can easily be done in LabVIEW and the result of theoretical and experimental of voltage, current, apparent power, reactive power, real power and power factor of percentage error should be less than 5%. The maximum active power obtain is in resistive load (114Ω) which is 460.366W, maximum apparent power is in resistive load (114Ω) which is 463.543VA while maximum reactive power is in capacitive load (114Ω + 7f) which is 240.621VAR.