Assessment of a fuzzy logic based MRAS observer used in a photovoltaic array supplied AC drive
Received date: 21 Mar 2013
Accepted date: 24 May 2013
Published date: 05 Mar 2014
Copyright
In this paper a fuzzy logic (FL) based model reference adaptive system (MRAS) speed observer for high performance AC drives is proposed. The error vector computation is made based on the rotor-flux derived from the reference and the adaptive model of the induction motor. The error signal is processed in the proposed fuzzy logic controller (FLC) for speed adaptation. The drive employs an indirect vector control scheme for achieving a good closed loop speed control. For powering the drive system, a standalone photovoltaic (PV) energy source is used. To extract the maximum power from the PV source, a constant voltage controller (CVC) is also proposed. The complete drive system is modeled in MATLAB/Simulink and the performance is analyzed for different operating conditions.
Bhavnesh KUMAR , Yogesh K CHAUHAN , Vivek SHRIVASTAVA . Assessment of a fuzzy logic based MRAS observer used in a photovoltaic array supplied AC drive[J]. Frontiers in Energy, 2014 , 8(1) : 81 -89 . DOI: 10.1007/s11708-014-0295-9
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