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Wind power generation and Solar PV installations continues to grow and are the two key contributors to the large scale variable power generation mix. Utility transmission system operators impose stringent grid codes internationally. Grid code regulations are defined by system operators to outline the rights and responsibilities of all the generators and loads that are connected to the transmission/distribution...
The depth cues from multiple images are useful in accurate depth extraction while monocular cues from single still image are more versatile. In our paper, monocular cue which gives useful information about single frame and depth from motion using optical flow estimated from consecutive video frames are used to produce final depth maps. The machine learning approach is promising and new research direction...
This paper presents the latest advancements in direct torque and flux control (DTFC) schemes of interior permanent magnet synchronous motor (IPMSM) drives. A novel eighteen-sector based DTFC scheme incorporating a model based loss minimization algorithm is proposed to mitigate the torque ripples and achieve high efficiency as compared to the conventional six-sector based DTFC scheme. Finally, in order...
This work describes our on-going efforts to develop a multiscale Quantum Atomistic Device Simulator (QuADS 3-D) where: a) material parameters are obtained atomistically using first-principles, b) structural relaxation and phonon dispersions are studied via molecular mechanics/dynamics, c) a variety of tight-binding models (s, sp3s*, sp3d5s*) are used for the calculation of electronic bandstructure...
Freeform (physically flexible, stretchable and reconfigurable) electronics can be critical enabler for advanced personalized healthcare. With increased global population and extended average lifetime of mankind, it is more important than ever to integrate advanced electronics into our daily life for advanced personalized healthcare. In this paper, we discuss some critical criteria to design such electronics...
In the present situation power becomes basic need for human life. Energy is responsible for major developments of any country's economy. Conventional energy sources generate most of the energy of today's world. But the population is increasing day by day and the conventional energy sources are diminishing. Moreover, these conventional energy sources are polluting and responsible for global warming...
Estimation of small tap-coefficients of large sparse system using μ-law based proportionate normalized least square (MPNLMS) algorithm yields slow converges, since the proportionality of these coefficients is ignored in the updated process. The individual activation factor-MPNLMS (IAF-MPNLMS) algorithm solves this problem by assigning new gain distribution factor while updating the tap-coefficients...
DC power conditioning and processing is an essential challenge now a days. Rectifiers having bridge structures are considered to be nonlinear as they draw non sinusoidal current from line. This distorted current causes several problems related to power quality. In this paper, a new configuration of single phase single switch controlled rectifier using SEPIC topology is proposed. The input current...
This paper presents the development of a neuromorphic system for visual pattern recognition. Associative memory algorithm has been used to recognize specific patterns and the method is implemented with discrete circuit elements that use memristors as the synapse. Weight of the synapses between the inputs and output neurons are adjusted by memristors. The amount of the neural block depends on how many...
A wide-tuning-range and constant gain ring voltage controlled oscillator (VCO) is presented for radio frequency application. The circuit is implemented in 90nm RF CMOS 1.2 V process technology. The biasing circuit utilizes the concept of voltage controlled voltage source to increase the tuning range as well as to obtain a constant gain (KVCO) within the operating range. This results in a rail-to-rail...
Recently, the electric power generation by wind energy conversion systems (WECSs) has increased significantly. Therefore, wind power generation systems are required to achieve the grid codes (GCs) requirements stated by the power system operators. In case of grid voltage dips, a mismatch between the generated active power from the generator and the active power delivered to the grid is produced. The...
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