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This paper presents real-time diagnosis for open-circuited (O-C) and unbalance faults in power electronic converters (PECs) connected to residential small wind systems grid-tied. The spectrum analysis along with the dc components of the voltage and current measurements available in the converter is utilized for the O-C fault detection, classification and localization of the power switching devices...
Power electronics converter systems (PECS) are significant devices, which are used in industrial applications, including smart grids and variable speed AC drives. Therefore, the knowledge about the fault mode behavior of a converter system is extremely important from the perspective of protection and fault control in power systems. The present paper describes a novel on-line digital signal processor...
Reliability of power electronic systems is of paramount importance in industrial, commercial, aerospace, and military applications. Faults in power converters are classified as short circuit faults, open circuit faults, and degradation faults. Short circuits (S-C) in most cases cause an overcurrent condition that is readily detected and acted upon by standard protection systems. However, open circuit...
This paper demonstrates a fault detection and location for the open circuit (O.C) faults in the all power electronic converter stages including; the three-phase rectifier, the dc-dc converter, and finally the single-phase inverter. The proposed fault diagnosis is based on the adaptive neuro-fuzzy inference system (ANFIS) algorithm. The inputs to the ANFIS unit are the voltage and the current measurements...
This paper proposes a complete maximum power point tracking (MPPT) solution for grid-connected photovoltaic (PV) systems. The proposed MPPT algorithm is a multi-stage algorithm combined with the golden section search (GSS) method and two other commonly used methods: the perturb and observe (P&O) and the incremental conductance (INC). The GSS method is used for its fast convergence time and robustness...
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