alexa DYNAMIC D-Q AXIS MODELING OF THREE-PHASE ASYNCHRONOUS
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
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Research Article

DYNAMIC D-Q AXIS MODELING OF THREE-PHASE ASYNCHRONOUS MACHINE USING MATLAB

Shakuntla Boora1, S.K Agarwal2 and K.S Sandhu3
  1. Assistant professor, Dept. of EE, YMCAUST, Faridabad, India
  2. Professor and Head, Dept. of EE, YMCAUST, Faridabad, India
  3. Professor and Head, Dept. of EE, National Institute of Technology, Kurukshetra, India
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Abstract

This paper presents a dynamic d-q axis model of three- phase asynchronous motor in synchronously rotating frame. The systems of differential equations representing the dynamic state behaviours of the machine as developed are implemented in MATLAB/SIMULINK. The effects of the stepped sequence of mechanical loading on the motor output variables namely: three-phase stator currents (ia, ib and ic), electromechanical torque and rotor speed, d-q stator and rotor currents (iqs, ids, iqr and idr), d-q voltages (vqs and vds) are examined. The results obtained clearly show the elegance of the d-q axis transformation theory in machine modelling and the inherent limitations of the directon- line starting of 3-hp and 2250-hp asynchronous motors.

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