The voltage sag detection algorithm and control algorithm synthesis of the dynamic voltage restorer (DVR) are proposed. The double synchronous reference frame phase-locked loop (DSRF-PLL) is applied for the voltage sag detection, which is able to calculate the phase angle of the positive-sequence fundamental component of grid voltages even under unbalanced and distorted grid voltages. The effec...

The theoretical ~quantum! description of large amplitude vibrations of systems containing four or more atoms using orthogonal internal coordinates requires three or more angular coordinates. The basis commonly used to represent these coordinates is the coupled angular momentum basis. We show that a direct product angular discrete variable representation ~DVR! can be used advantageously, particu...

<p><span lang="EN-US">The power quality issues are raised due to sag/swell, which affects the overall performance of grid-connected system. This study introduces hybrid control mechanism based on a dynamic voltage restorer (DVR) mitigate sag and swell in solar PV-based IEEE 33 bus The controller improves boosts efficiency DVR proposed work is also used address distribution system's ...

The definition of Milnor-Witt cycle modules in [5] can easily be adapted over general regular base schemes. However, there are simple examples (see (2.9)) to show that Gersten complex fails exact for if the is not a field. goal this article that, restricted class an excellent DVR satisfying extra axiom, called here as R5, expected properties exactness and A1-invariance hold. Moreover R5 vacuous...

Power quality (PQ) is a key issue, particularly for technologically advanced process equipment, whose performance mainly depends on the of supply. Problems with PQ such as voltage swells/sags, interruptions, and harmonics are defined by any voltage, current, or frequency abnormalities causing damage failure end-user equipment. Outages interruptions lead to malfunctioning equipment sensitive loa...

Abstract Objective. To explore the viability of developing a computer-aided diagnostic system for Parkinsonian syndromes using dynamic [ 11 C]raclopride positron emission tomography (PET) and T1-weighted magnetic resonance imaging (MRI) data. Approach. The biological heterogeneity renders their statistical classification challenge. unique combination structural molecular data allowed different ...

This paper presents design and architecture of the distributed virtual reality service (dvr) which allows collaboration-unaware VRML animations and simulations to be integrated into cooperative applications. The dvr service realizes the distribution of VRML content to a group of participants via multicast. User interactions with the VRML model are synchronized in a manner transparent to the VRM...

This paper suggest a control strategy to enhance the LVRT capability of doubly fed induction generator (DFIG) based wind turbine system using dynamic voltage restorer (DVR). Wind should support grid during fault time. The method used here is series compensation at point common coupling on occurrence maintain stator constant. performance improved by optimization PI parameters particle swarm as c...