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.
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Showing 1 to 20 of 106 for “"Voltage Control"”.
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Secondary Voltage Control Using Partial Information Structures
Developed in this thesis is a method of voltage control which uses a partial information structure. In this method, the information available to the controller is the set of voltages at a small set of busses in the system called pilot points. The information from the pilot points is then used in a …
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Distributed Algorithms for Voltage Control in Electrical Networks
… reactive power support required to stabilize and control voltage in electric power systems. As the number of distributed energy resources continues to increase, traditional approaches to the design and control of distribution networks will no longer be adequate. For example, on a clear day with …
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A Data Analytics Framework for Regional Voltage Control
… under a heavy loading condition, the unstable voltage condition may cause a cascading outage. The voltage fluctuations are presently being further aggravated by the increasing integration of utility-scale renewable energy sources. In this regards, a fast response and reliable voltage control …
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Development of 3-phase inverter with PID voltage control
… to change the output to a sinusoidal wave. A control method is implemented in this project to create stable sinusoidal voltage amplitude. The benefit of using control method is the inverter can be adjusted to adapt to a variety of loads and able to mitigate any small disturbance in the system. …
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Development of PID voltage control for DC motor using arduino
… focuses on the design and implementation of PID voltage control for DC motor. DC motor is a machine that widely used due to excellence speed control for acceleration and deceleration with effective and simple torque control. The PID controller is employed to control the output voltage of three …
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Architectures and algorithms for voltage control in power distribution systems
In this thesis, we propose a hierarchical control architecture for voltage in power distribution networks where there is a separation between the slow time-scale, in which the settings of conventional voltage regulation devices are adjusted, and the fast time-scale, in which voltage regulation …
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Development of p-resonant voltage control for dc motor using arduino
… about to design and to development of P-Resonant voltage control for DC motor. The objective of P-Resonant controllers is applied to control the output voltage of the DC motor. An Arduino board device is used as a medium for the implementation of the control system design. The P-Resonant …
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Bipolar voltage control of a 5 MV Van de Graaff generator.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1974. M.S.
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Development of time delay voltage control for lead acid battery using arduino
A time delay controller with voltage control technique is designed and developed in this project. In order to control the output voltage, a DC-DC buckboost converter has been development. The buckboost circuit with mosfet as a switching component has been drives by using gate driver as a medium …
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Voltage Control of Magnetism in Novel Structured Vertically Aligned Nanocomposite Thin Films
This thesis investigates voltage control of magnetism (VCM) in novel structured VAN thin films. Both magneto-ionic (MI) and magnetoelectric (ME) systems were studied. Magneto-ionic devices, which utilise voltage-driven ion migration to control magnetic properties, hold promise for energy-efficient, …
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Analysis and design of multiple-output forward converter with weighted voltage control
… multiple-output forward converters with weighted voltage control. Based upon the analyses, the systematic design methodologies and design tools are provided. A power stage de model including all the major parasitics, which are detrimental to the output voltages, is derived. A nonlinear programming …
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Data-Driven Voltage Control of DERs Integrated Distribution Grids Using Deep Reinforcement Learning
… grids presents a significant challenge for voltage control and power loss due to their intermittent nature and diverse operational characteristics. Although different control strategies have been developed to improve the voltage profile of the distribution networks, Volt-VAR control (VVC) is …
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Fundamentals, Voltage Control and Novel Application of Exchange Bias in Magnetic Thin Films
… Building on these insights, we demonstrate voltage-controlled ionic gating to manipulate EB, achieving cyclic toggling of the EB sign in a ferrimagnetic system, where the magnetization direction is fully determined by the gating state. Furthermore, by targeting the antiferromagnet directly, …
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PID-hysteresis voltage control technique for three phase induction motor (matlab simulink and arduino)
… in harsh environment. However, their controllability remains a difficult task using conventional control method. The control difficulty is associated with high nonlinearity of the motor’s behavior, complexity of its analytical model and presence of interactive multivariable structures. …
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Derivation of Parabolic Current Control with High Precision, Fast Convergence and Extended Voltage Control Application
Current control is an important topic in modern power electronics system. For voltage source inverters, current control loop ensures the waveform quality at steady state and the fast response at transient state. To improve the current control performance, quite a few nonlinear control strategies …
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Sensitivity and Bias Based Receding Horizon Multi Step Optimization (RHMSO) Controller for Real Time Voltage Control
… for the correction of violating transmission voltages is developed and analyzed in this thesis. The contribution of this thesis are two fold. A receding horizon multi-step optimization (RHMSO) controller which utilizes a linearized system model is developed. This linear system model is derived …
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Voltage control of electrical, optical and magnetic properties of materials by solid state ionic transport and electrochemical reactions
Reversible post-fabrication control of material properties enables devices that can adapt to different needs or environmental conditions, and brings additional levels of functionality, paving the way towards applications such as reconfigurable electronics, reconfigurable antennas, active optical …
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Novel Voltage Control Methods for quasi-Z-source Network Converters with Focus on Fixed DC-Link Voltage, Constant- Frequency and Soft-Switching Operation
… is the intermediate DClink capacitor: its voltage varies with operating conditions. Low DC-link voltage drives high full-bridge current, elevating conduction and turn-off losses; high DC-link voltage raises switch stress and device cost. These fluctuations complicate design and control, …
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Voltage stability analysis and control in power systems
Under the title of Voltage Stability Analysis and Control, three major subjects have been examined in this PhD project: the fundamental study of voltage stability, the on-line prediction method for voltage collapse, and secondary voltage control systems. The fundamental study was aimed to lay a …
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Voltage drop apportionment in Eskom's distribution networks
Includes bibliographical references. Keywords: voltage drop Keywords: voltage apportionment Keywords: voltage control
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