Mohd Wafiuddin Yahya
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Preferred name
Mohd Wafiuddin Yahya
Official Name
Mohd Wafiuddin , Yahya
Alternative Name
Yahya, M. W.
Yahya, Mohd Wafiuddin
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Scopus Author ID
57202610067
Researcher ID
HZG-9288-2023

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  • Publication
    Simulation of three phase induction motor on stationary reference frame
    (Universiti Malaysia Perlis (UniMAP), 2016)
    Mohd Wafiuddin Yahya
    This thesis presents the qdO axis based modeling is proposed to analyze the transient performance of three phase induction motor with the specifications as 0.5Hp, 420V, 50Hz and 4 poles using stationary reference frame. In electrical engineering field, this qdO transformation is used to simplify the analysis of three phase circuit and its application is to reduce the three AC quantities to two DC quantities. This research started with the findings of the parameters of the machines used. There are three main methods are used which are stator DC measurement test to find the value of stator resistance, r1, no-load test to find the value of the magnetizing reactance, Xm and blocked rotor test for the values of rotor resistance, r2, stator and rotor leakage reactance, X 1 and X 2. All data collected and recorded in a table. These methods have been done in the laboratory room. Matlab Simulink package is used to analysis the transient behavior of the three phase induction motor and the sufficient time span is included to study the complete motor's characteristics. The analysis results show the magnitude of phase voltage (V11h) to neutral, phase currents of stator, speed and torque of the machine. The magnitude of v,,. to neutral point of the three phase induction motor is 342.9V. The analysis of the phase voltage also show that phase-b voltage to neutral is lagging phase-a voltage to neutral and the phase-c voltage to neutral is leading the phase-c voltage to neutral. Each lagging and leading is ~n or 120°. For phase stator currents are discussed about the phase-a, phase-b and phase-c in terms of the magnitudes reduce from the high inrush current during the starting up motor until reaching the steady state condition. The magnitude values of the phases current are 1.89A and the time taken is 0.8 seconds when reached the steady state condition. As for the speed of the rotor, it is starting from Opu and time also 0 and increase linearly to the time until reach the steady state value. The speed reach the steady state value at 1.16 pu and the time is 0.8956 seconds. The highest magnitude recorded for the starting torque is 22.92Nm and this value keeps changing until it reaches the steady state value. The steady state value for this torque is 2.37Nm and the time is 0.9653 seconds.