In this paper a comprehensive review of recent studies on the ultrasonic piezoelectric motors
is presented. The authors focus on research articles published in the last five years mostly …

A robust and improved control scheme of a variable speed multi-rotor wind turbine (MRWT)
system with a doubly fed asynchronous generator (DFAG) is displayed in this work. In order …

This paper firstly presents an extended sliding mode observer (ESMO) for the electro-
hydraulic servo systems (EHSSs) to deal with nonlinear factors like the external disturbance …

The article presents the concept of a new design of a multi-phase doubly-fed induction
generator (DFIG). The innovative design approach uses a five-phase power supply from the …

The quality of electrical energy is among the matters of great importance in the field of
renewable energies, especially in the case of wind energy. Power quality has a lot to do with …

This paper proposes a fractional-order adaptive backstepping control (FOABC) with
disturbance and uncertainty terms compensation for improving the MPPT (maximum power …

A novel, cascaded model reference adaptive system (MRAS) observer design for speed and
reactive power () control of the emerging brushless doubly-fed reluctance generator …

The nonadaptive speed and position estimation scheme for a doubly-fed induction
generator (DFIG) is presented in this article. The observer structure is based on the …

This article addresses the problem of controlling an overall wind energy conversion system
(WECS) formed by a wind turbine connected to the grid via a doubly fed induction generator …

A novel model reference adaptive system for the rotor position/speed estimation and
sensorless operation of a brushless doubly fed reluctance generator with maximum power …