Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 784 for “"inertia"”.
-
Virtual Inertia Emulation to Improve Dynamic Frequency Stability of Low Inertia Microgrids
<p>Due to low inertia and the intermittent nature of photovoltaic systems, dynamic frequency stability issues arise in microgrids with large photovoltaic systems. This limits the maximum amount of photovoltaic systems that can be penetrated in the microgrid. In order to increase the penetration of …
-
Low thermal inertia injection molding
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1983.
-
Thermal inertia of engineering geologic units, The
Includes bibliographical references (pages 170-176).
-
Advanced control techniques for modern inertia based inverters
… increase in the penetration of fast-responding inertia-less power converters. The increase in the penetration of these power electronics converters changes the nature of the conventional grid, in which the existing kinetic inertia in the rotating parts of the enormous generators plays a vital …
-
Modelling of the inertia welding of Inconel 718
In this study, the inertia welding process was studied by both an FEM model and three analytical models. The thermal analysis shows that there is a steep temperature gradient near the mating surface, which is the cause for the existence of a band of high hydrostatic stress near the weld line. The …
-
Investigation into the stability of low-inertia micro-grids
This work examines the stability of low inertia micro-grids (MGs). The lack of inertia in such power electronics dominated grid is a pressing matter that directly impacts its operation and stability. The investigated MG is formed by power electronics-based DC-AC converters; each of them is …
-
Managing Behavioral Hazard: Value-Based Insurance Design and Inertia
… effects interact with consumers experiencing inertia, I estimate a model of plan choice and level of deductible and investigate responses to counterfactual plan menus which i) reduce the number of plan options, ii) lower the switching cost to zero, and iii) mandate enrollment in the …
-
Instrumentation testing and potentialities of an inertia loading machine
no abstract provided by the author
-
Fundamental issues in general relativity : inertia, gravitation and electromagnetic mass
An opportunity for revealing the nature of inertia and gravitation in terms of both general relativity and the electromagnetic mass theory may have been missed in the first quarter of this century. If the entire mass of an elementary charged particle is regarded as electromagnetic in origin, a …
-
Effect of lining thermal inertia on small-scale compartment fire
… to examine principally the influence of thermal inertia of the lining material on ventilated enclosure fire The radiation error of the thermocouple reading was studied using radiation network models. Previous theoretical studies were implemented to provide improved models appropriate to the more …
-
Accelerated first-order optimization methods using inertia and error bounds
… three areas. Firstly we investigate the use of inertia to accelerate the convergence of proximal gradient methods for convex composite optimization problems. We pay special attention to the famous lasso problem for which we develop an improved version of the well-known Fast Iterative …
-
Implementation of low thermal inertia injection molds using conformal passages
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
-
Design architecture for dynamic low inertia multi DOF robotic manipulators
… for robotic designers interested in creating low inertia, high bandwidth, multi DOF robotic arms and hands capable of proprioceptive force feedback from the world. This thesis briefly outlines the physics that govern the dynamics of robotic manipulators. It further covers various actuators and …
-
Energy methods for analyzing drag and inertia in cycling kinematics
… developed for measuring the drag and effects of inertia for a cyclist during a race. Professional cyclist data from the Tour de France was acquired for several athletes. The data contained elevation, distance, velocity, and power as a function of time. Rolling resistance, drag, inertial energy, …
-
Understanding the Independent Effects of Inertia and Weight on Balance
… effects of altered dynamics, namely increased inertia and increased weight, on standing balance. Sixteen normal-weight male participants completed quiet standing in a custom-built backboard under four conditions: baseline, increased inertia only, increased weight only, and increased inertia and …
-
Floor Vibrations: Girder Effective Moment of Inertia and Cost Study
Studies on the effective moment of inertia of girders that support concrete slabs using joist seats as the horizontal shear connections, and a cost efficiency analysis comparing composite and non-composite floor systems that meet vibrations design standards, were conducted. The first study was …
-
Changes to system inertia and the impact on frequency response requirements
… power landscape and associated reduction of inertia in the power system,introduces concerns about the assurance of frequency stability and the adequacy ofdynamic frequency responses at low inertia. In islanded power systems, like those ofIreland and Great Britain (GB), understanding the …
-
Inertia compensation of a planar robot for human upper limb interaction
… for the natural robot configuration-based inertia as well as friction and un-modeled dynamics. The inertia compensator was designed using an inertial admittance model and a nonlinear robust adaptive tracking controller based on sliding mode control. A hybrid control mode was developed in …
-
Supply response to consumer inertia : strategic pricing in Medicare Part D
… that consumers in health insurance markets are inertial, or behave as though they face substantial switching costs in choosing a health insurance plan. I investigate whether the private firms that provide prescription drug insurance through Medicare Part D exploit this inertia when setting …
Page 1 of 40