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 33 for “"droop control"”.
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INCREASING ENDURANCE IN TACTICAL DC MICROGRIDS WITH VARIABLE GAIN DROOP CONTROL
… more mobile basing, the integration of novel control architectures based on efficiency presents an opportunity for greater operational endurance from reduced fuel consumption and smaller physical footprints. To form these microgrids, diesel generators have been used for decades and are proven …
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An experimental study of frequency droop control in a low-inertia microgrid
… and damaging both generators and loads. A control system is necessary to bring stability while providing efficient and robust electricity to the microgrid. A droop control scheme uses only local power to detect changes in the system and adjust the operating points of the generators …
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Power sharing conditioning control in single-phase parallel distributed generations with simple improvement of droop control
Droop control is the critical solution for sharing the power demand between Distributed Generations (DGs) in islanding microgrid when there is no support from the electricity distribution grid. The droop control is applied as the local control scheme to achieve power sharing among parallel …
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MANAGEMENT OF HYBRID (AC-DC) MICRO-GRIDS
… a bi-directional single phase inverter. Demand-droop control is used to manage power sharing between power sources in each sub-grid; however, managing the power flow through the entire grid is still a challenge. To overcome this we develop droop control strategies for each sub-grid, and droop …
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Control of a Single-Phase Grid-Connected Voltage Source Inverter with LCL Filter
This thesis presents new control approaches for improving the performance, stability, and efficiency of a single-phase grid-connected voltage source inverter (VSI) with an LCL filter that is used in renewable energy power conditioning applications. There are two main controllers that need to be …
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Intelligent and Robust Control Strategy for Improving Microgrids Operation and Stability
… through inverter-interfaced DG (IIDG) units. Droop control systems are widely adopted in conventional power systems and the decentralized droop-like control method is the most favorable control system for MGs. However, there are some crucial issues related to the poor performance of droop …
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Frequency Control of Wind and PV Based Isolated Microgrid
… microgrid. This thesis work focuses on frequency control of wind and photovoltaic (PV) based isolated micro-grid using traditional droop control technique. The battery system acts as a master unit which is responsible for setting up the common AC bus voltage and frequency. The proportionalresonant …
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Control of DC Power Distribution Systems and Low-Voltage Grid-Interface Converter Design
… the application of dc systems: (a) system-level control to improve load sharing, voltage regulation and efficiency; (b) design of a high-efficiency interface converter to connect dc microgrids with the existing low-voltage ac distributions, with a special focus on common-mode (CM) voltage …
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Autonomous Local Control in Distributed DC Power Systems
… and demand-side management. On the supply side, droop control is examined as a form of autonomous local control that adds damping to stabilize the power system. On the demand side, control strategies are shown for both single bus and multibus systems. In a single bus system, dynamic load …
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A power sharing based approach for optimizing photovoltaic generation in autonomous microgrids
… of optimizing their use. This work presents a control strategy for the optimization of available photovoltaic generation in an autonomous microgrid. The deepening penetration of rooftop solar panels motivates our case study of a microgrid with photovoltaic (PV) generators and microturbines. …
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Comparação entre controle por inclinação e controle mestre-escravo sem comunicação em microrredes operando no modo autônomo
… modo autônomo, é necessaria alguma estratégia de controle para garantir o adequado compartilhamento de carga entre os conversores que for- mam a microrrede. Neste trabalho, é realizado um estudo comparativo entre duas estratégias de compartilhamento de carga, o controle por inclinação (droop …
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Modeling, simulation, and control design of electro-mechanical dynamics in heterogeneous power systems
… generators and grid forming inverters with droop control, virtual synchronous machine control, and dispatchable virtual oscillator control is developed. To mitigate model complexity and facilitate analytical understanding, this framework employs reduced-order models that are applicable for …
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Vector Based Control for Power Electronics Dominated AC Power Grid
… at the forefront of modern power systems. To control power electronics in grid-connected applications, Grid Forming (GFM) control has become a focal point of research. GFM control utilizes control laws derived from steady-state relationships in the phasor domain. Although these control methods …
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Power Sharing and Power Quality Improvement in Parallel Connected Power Converters in the Microgrid
… are putting challenges to VSC converter control. To address above issues, this thesis investigates VSC control methods that can effectively share the load power demand in islanded microgrids as well as actively mitigate the resonances and harmonics in grid-connected mode. A modified droop …
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Systematic control strategy for inverter-based microgrids
… operation without a grid connection. Therefore, control of inverter-based or inverter-dominant systems is gaining a lot of attention while posing different challenges compared to traditional power systems. Conventional droop-based control architectures can provide power-sharing capability, and …
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Islanded Operation of Parallel Inverter-interfaced Microgrids with Photovoltaic Systems
This thesis presents autonomous droop-based control schemes to share power proportionally in inverter-connected islanded microgrids; in which different microgrid structures such as inductive (L-type), resistive (R-type), and resistive-inductive (RL-type) are considered. The main aim of designing …
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Advanced Assessment of Inverter-based Resources-Storage Technologies on Modern Electric Grids in terms of Power Profiling, Ancillary Services, and Transient Stability
… power-sharing method is developed using modified droop control, enabling effective active and reactive power management and ancillary service delivery in both grid-connected and islanded microgrid modes. Collectively, this research advances the integration of renewable energy by proposing robust …
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