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Now showing items 2920-2939 of 6415
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Investigations On Boundary Selection For Switching Frequency Variation Control Of Current Error Space Phasor Based Hysteresis Controllers For Inverter Fed IM Drives
(2011-08-04)Current-Controlled Pulse Width Modulated (CC-PWM) Voltage Source Inverters (VSIs) are extensively employed in high performance drives (HPD) because of the considerable advantages offered by them, such as, excellent dynamic ... -
Investigations on Capacitor Size Reduction and PWM Strategy for Multilevel Polygonal Space Vector Structure for Induction Motor Drives
Multilevel voltage source inverter transformed conversion of DC to AC for medium to high power application. With increasing electric power demand, the multilevel converter allows high power density converters for medium ... -
Investigations On Certain Tellurium Based Bulk Chalcogenide Glasses And Amorphous Chalcogenide Films Having Phase Change Memory (PCM) Applications
(2014-09-04)Chalcogenide glass based Phase Change Memories (PCMs) are being considered recently as promising alternatives to conventional non-volatile Random Access Memories (NVRAMs). PCMs offer high performance & low power consumption, ... -
Investigations on CPI Centric Worst Case Execution Time Analysis
(2018-03-19)Estimating program worst case execution time (WCET) is an important problem in the domain of real-time systems and embedded systems that are deadline-centric. If WCET of a program is found to exceed the deadline, it is ... -
Investigations on deep-level defects in HgTe nanocrystals-based photovoltaic devices using a novel instrumentation for Deep Level Transient Spectroscopy
Colloidally produced nanocrystals (NCs) arranged in thin films hold promise for next-generation semiconductors. These NCs offer tunability in semiconductor properties due to their size, shape, composition, and surface ... -
Investigations On Dodecagonal Space Vector Generation For Induction Motor Drives
(2011-01-27)Multilevel converters are finding increased attention in industry and academia as the preferred choice of electronic power conversion for high power applications. They have a wide application area in a variety of industries ... -
Investigations on Dynamics and Control of a Rimless Wheel Based 2D Dynamics Walker using Pulsed Torque Actuation
(2018-05-10)Wheeled systems are energy efficient on prepared surfaces like roads and tracks. Legged systems are capable of traversing different terrains but can be lossy. At low speeds and on off-road surfaces, legged systems using ... -
Investigations On Electrodes And Electrolyte Layers For Thin Film Battery
(2013-07-03)The magnificent development of on-board solutions for electronics has resulted in the race towards scaling down of autonomous micro-power sources. In order to maintain the reliability of miniaturized devices and to reduce ... -
Investigations on Extending the Linear Modulation Range of Multilevel Inverter Fed Induction Motor Drives
Multilevel inverter topologies find extensive industrial and automobile applications due to their utilization of lower voltage-rated switches and enhanced harmonic performance. Incorporating Pulse Width Modulation (PWM) ... -
Investigations On Film Cooling At Hypersonic Mach Number Using Forward Facing Injection From Micro-Jet Array
(2010-07-16)A body in a hypersonic flow field will experience very high heating especially during re-entry. Conventionally this problem is tackled to some extent by the use of large angle blunt cones. At the cost of increased drag, ... -
Investigations on Five Level Inverter Schemes for Extending the Linear Modulation Range for Induction Motor Drives
Multilevel inverters (MLI) are the most preferable alternatives for medium to high voltage applications. It finds in many applications like traction drives, fans, blowers, HVDC and FACTs etc. It offers many attractive ... -
Investigations on Generation of 30-Sided Polygonal Voltage Space Vector Structures Using a Single DC-link for Induction Motor Drives
A conventional 2-level inverter is the most prevalent DC-AC converter used to drive an induction motor. A conventional 2-level inverter produces a hexagonal voltage space vector structure. To extract maximum voltage from ... -
Investigations on Generation of Multilevel 24-Sided Polygonal Voltage Space Vector Structures Without Vector Averaging for Variable Speed Drives
Induction motors are mainly powered by two-level inverters in low-voltage, low-power drive applications. For medium and high voltage applications, a conventional two-level inverter needs high voltage rated switches, ... -
Investigations on Graphene/Sn/SnO2 Based Nanostructures as Anode for Li-ion Batteries
(2018-05-01)Li-ion thin film battery technology has attracted much attention in recent years due to its highest need in portable electronic devices. Development of new materials for lithium ion battery (LIB) is very crucial for ... -
Investigations On High Rayleigh Number Turbulent Free Convection
(Indian Institute of Science, 2005-08-31)High Rayleigh number(Ra) turbulent free convection has many unresolved issues related to the phenomenology behind the flux scaling, the presence of a mean wind and its effects, exponential probability distribution ... -
Investigations on Hybrid Multilevel Inverters with a Single DC Supply for Zero and Reduced Common Mode Voltage Operation and Extended Linear Modulation Range Operation for Induction Motor Drives
(2018-01-01)Multilevel inverters play a major role in the modern day medium and high power energy conversion processes. The classic two level voltage source inverter generates PWM pole voltage output having two levels with strong ... -
Investigations on Impinging Shock Wave and Boundary Layer Interactions in Hypersonic Flow
Shock boundary layer interactions (SBLIs) rank among the most fundamental problems in high-speed aerodynamics and are a primary concern in hypersonic flows. Shocks at hypersonic speeds are typically strong enough to separate ... -
Investigations on Increasing Linear Modulation Range in Hybrid Multilevel Inverter Fed Induction Machine Drives Regardless of Load Power Factor
Nowadays, multilevel inverters (MLIs) have become a promising alternative to the twolevel inverter in medium voltage high-power applications such as motor drives, active power filters, HVDC, electric vehicles, wind, and ... -
Investigations on Joule Heating and Associated Effects during Liquid Dielectrophoresis of Aqueous Droplets
Liquid dielectrophoresis (L-DEP) is an electrokinetic phenomenon in which a dielectric liquid with higher permittivity than the surrounding medium, when placed in a non-uniform electric field, moves towards the regions of ...