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 211 for “"Power control"”.
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Direct Power Control of AC Motors
In this thesis, the possibilities of direct power control (DPC) of induction motors (IMs) and permanent magnet synchronous motors (PMSMs) fed by a voltage source inverter have been studied. Three different approaches of DPC for IMs and one for PMSMs are proposed and investigated. They are: (a) …
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Performance of CDMA power control for HAPS
… HAPS. This project addresses downlink and uplink power control for high altitude platform station for a WCDMA under the assumption of power control imperfections. However in real systems power control imperfections degrade the system capacity. In this project, the performance of two distance based …
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Power control for fair dynamic channel reservation
… and a recent time-division based medium access control protocol, Dynamic Channel Reservation (DCR) in realistic high-density traffic scenarios. We focus on the communication requirements that allow vehicles to receive safety messages well enough in advance to warn the driver in a timely manner …
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Power control for spread spectrum communications systems
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Cellular power control in a fading environment
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Voltage and Reactive Power Control in Islanded Microgrids
… generation (DG) units to maintain equal reactive power sharing in a distribution system; 2) The ability of the DG units to maintain acceptable voltage boundary in the entire IMG; 3) The functionality of the existing voltage and reactive power (Volt/Var) DG, this thesis analyzes the complexity of …
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Robust power control design for wind energy in microgrid
… been extensive research concerning wind turbine power generators. However, reducing wind turbine uncertainty in a microgrid with gas turbine and storage has received limited interest. Our objective is to reduce costs, while controlling a microgrid in an environment friendly manner. Since the …
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Interference and power control in ad hoc wireless networks
… thesis looks at the problem of interference when Power Control is applied to maximize the network capacity. In ad hoc networks, the RTS/CTS dialog or virtual carrier sensing is less effective since a transmission takes place over three ranges: interference range, carrier sense range and …
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Spreading and power control for multiple antenna transmit diversity
… feedback information from the mobile to do joint power control on the multiple antennas. Our throughput analysis reveals a surprising result; in the context of our problem setting, one bit feedback, indicating which antenna is better, does not give large gains.
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Power Control and Resource Allocation for QoS-Constrained Wireless Networks
… as delay and data rate are modelled. To solve power control and channel resource allocation problems, dynamic power control, matching theory and multi-armed bandit algorithms are employed in our investigations. In this dissertation, we first consider a cluster-based cooperative wireless network …
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Adaptive power control as a fade countermeasure on satellite links
… of these fades, it has been proposed that the power of the uplink station transmitter be adjusted during the fade to compensate. This dissertation will explore some of the issues involved in implementing this uplink power control (ULPC). Fade slope is examined as a parameter to predict signal …
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Consensus-Based Active and Reactive Power Control and Management of Microgrids
… efficiency, reduced emissions, and improved power quality. Their success hinges on cost reductions in renewables, storage, reliability, and energy management systems, enabling operation both with and without the utility grid.</p> <p>Economic Dispatch optimizes system costs, considering all …
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Approximation algorithms for spectrum allocation and power control in wireless networks
… This way, our interference model allows to take power control into account. That is, transmit powers are individually adjusted with the purpose of minimizing the effects of interference. In the first part of this thesis, we consider the very fundamental combinatorial optimization problems. In the …
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Scheduling and Power Control in Sustainable Federated Learning over Wireless Networks
… framework by applying device scheduling and power control with energy harvesting. Our solutions will be extensively validated through real-world experiments. Specifically, we propose POLISH, a power control and device scheduling scheme designed to minimize the overall communication delay and …
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Uplink Power Control and Soft Handoff Prioritization in Multimedia DS-CDMA
In the CDMA cellular networking system, power control is a very important issue because it is an interference limited system. In order to reduce the near-far problem and improve the battery life of mobile station, the transmit power of mobile stations must be controlled to limit interference. In …
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Distributed power control (DPC) based energy efficient protocols for wireless networks
… energy efficient schemes and medium access control (MAC) protocols for wireless networks in the presence of fading channels while satisfying network constraints and user defined QoS requirements"--Abstract, page iv.
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Designing Reactive Power Control Rules for Smart Inverters using Machine Learning
Due to increasing penetration of solar power generation, distribution grids are facing a number of challenges. Frequent reverse active power flows can result in rapid fluctuations in voltage magnitudes. However, with the revised IEEE 1547 standard, smart inverters can actively control their …
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