Open-Circuit Fault-Tolerant Control for Outer Switches of Three-Level Rectifiers in Wind Turbine Systems - 2016

PROJECT TITLE :

Open-Circuit Fault-Tolerant Control for Outer Switches of Three-Level Rectifiers in Wind Turbine Systems - 2016

ABSTRACT:

A 3-level converter is used as the facility converters of wind turbine systems because of their advantages like low-current total harmonic distortion, high efficiency, and low collector-emitter voltage. Interior permanent magnet synchronous generators (IPMSGs) have been chosen because the generator in wind turbine systems thanks to their blessings of size and potency. In wind turbine systems consisting of the three-level converter and therefore the IPMSG, fault-tolerant controls for an open-circuit fault of switches ought to be implemented to improve reliability. This paper focuses on the open-circuit fault of outer switches (Sx1 and Sx4) in 3-level rectifiers (each neutral-purpose clamped and T-type) that are connected to the IPMSG. Still, the results of Sx1 and Sx4 open-circuit faults are analyzed, and based mostly on this analysis, a tolerant management is proposed. The proposed tolerant management maintains traditional operation with sinusoidal currents below the open-circuit fault of outer switches by adding a compensation worth to the reference voltages. The effectiveness and performance of the proposed tolerant management are verified by simulation and experiment.

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