In this study, a novel control scheme including a proportional–integral–harmonic resonant (PI–R) controller is presented to eliminate the produced harmonics resulting from the quasi-sine rotor voltage injection in a doubly fed induction generator (DFIG) connected to power electric networks. The control scheme is implemented in the rotor reference frame ðarbrÞ under quasi-sine rotor injection by...

We demonstrate how a monolithically integrated heterodyne source was used for a 33.6 GHz signal generation using an optical solution by a combination of cross-optical injection locking inside the chip and electrical injection locking at the RF signal 7th sub-harmonic.

This paper addresses control of nonlinear harmonic coupling in a pulsed jet injection experiment using a repetitive based control strategy for periodic reference tracking. A data driven approach identifies the harmonic interaction around a particular operating condition and generates a model for controller analysis and design. The single-input, singleoutput nonlinear plant is modeled as a nonli...

Ambipolar carrier injection from gold electrode into pentacene was investigated by time-resolved optical second harmonic generation (TRM-SHG) imaging. Smooth hole injection is verified by rapid decrease of the SHG intensity at the electrode edge, indicating the absence of an injection barrier. In contrast, TRM-SHG results clearly indicated the presence of electron injection from the high-work f...

With consideration to importance of power quality in power systems especially in distribution systems and with increasing application of electronic devices which have higher sensitivity to fed powers quality, in this paper voltage profile in distribution systems has been surveyed. Improvement of voltage profile via injection of reactive power has been depicted. Presence of loads which is genera...

Recent developments in tissue harmonic imaging and intravenous contrast agents have enhanced left ventricular endocardial border delineation (EBD). In a total of 48 patients with poor quality images, apical 4- and 2-chamber views were obtained with fundamental, tissue harmonic and contrast harmonic imaging with or without intravenous Levovist, an air-filled contrast agent. The left ventricle (L...

− We demonstrate an ultra-stable visible laser source that can be generated from injection locked infrared DFB based on optical comb. The optical comb was used as injection source and locked to an acetylene stabilization laser as a reference source of optical communication region. The DFB laser was selectively injection locked from only one among the comb mode with 25 GHz spacing. The ultra-sta...