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Título del libro: Stator-Flux-Oriented Sliding Mode Controller For Dfig With Variable Hysteresis Loop For Limiting Switch Frequency Of Rotor-Side Power Converter

Autores UNAM:
JOSE ANTONIO ROSALES MARTINEZ;
Autores externos:

Idioma:

Año de publicación:
2017
Palabras clave:

Controllers; Electric fault currents; Electric machine control; Electric machinery; Electric power system control; Electric power system economics; Electric power systems; Electronic equipment; Energy conversion; Energy policy; Hysteresis; Power control; Power converters; Power electronics; Reactive power; Sliding mode control; Stators; Switching; Switching frequency; Thermoelectric equipment; Wind power, Active and reactive power controls; Controller parameter; Discontinuous control; Doubly fed induction generators; Power electronic devices; Sliding mode controller; Stator flux oriented; Wind energy conversion system, Asynchronous generators


Resumen:

Doubly fed induction generator (DFIG) is the most implemented electric machine in wind energy conversion systems (WECS) due to reduced size converter, active and reactive power control and economic factors. However, the power electronic stage needs an accurate controller that allows to follow the stator power regulation. As a result, Sliding-Mode Control (SMC) has been successfully implemented in DFIG because the natural discontinuous control signals arising from the controller can be used for direct switching of power electronic devices. Yet, switching frequency of SMC depends on the sample rate, controller parameters and electric machine dynamics; this conditions produce a control signal with a variable switching frequency hindering implementation. In this paper a stator-flux-Oriented sliding-mode controller with a hysteresis band that limits the switching frequency of power electronic devices to a set value is presented. This methodology improves previous proposals by limiting switching frequency making implementation more feasible. Simulation results are presented to validate the control methodology. © 2017 IEEE.


Entidades citadas de la UNAM: