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2014年 第8卷 第1期

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《能源前沿（英文）》 >> 2014年 第8卷 第1期 doi: 10.1007/s11708-014-0295-9

Assessment of a fuzzy logic based MRAS observer used in a photovoltaic array supplied AC drive

1. School of Engineering, Gautam Buddha University, Greater Noida 201310, India; 2. Electrical Engineering Department, National Institute of Technology Delhi, Delhi 110077, India

发布日期： 2014-03-05
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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.

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