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 22 for “"optimal operating point"”.
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Implementation and control of distributed maximum power point tracking in solar photovoltaic applications
Maximum power point tracking (MPPT) is an important feature in solar photovoltaic (PV) systems as it increases the energy yield from such systems by optimizing their operating point. Current state-of-the-art solutions perform MPPT for a whole system, a string of panels or an individual panel within …
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Monitoring an industrial hydrocyclone using frequency domain multiplexing electrical impedance tomography
… setup, it is very difficult to determine the optimal operating point of a hydrocyclone. Tomography offers an exceptional opportunity to untangle the intricacies of the separation process structures without the intrusion of the sensing equipment or having to interfere with the process. The use …
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Low-Cost Architectures for Future MIMO Systems
… to hybrid structure.<br/><br/>From another viewpoint, the development of fifth generation enabling technologies brings new challenges to the design of power amplifiers (PAs). In particular, there is a strong demand for low-cost, nonlinear PAs which, however, introduce nonlinear distortions. On …
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Thermodynamic evaluation of cobalt-ferrite based redox reactions for solar thermochemical conversion of CO2 into fuels
… reducing solar energy demand, and shifting the optimal operating point toward higher inert‑gas throughput.
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An ultra-low voltage FFT processor using energy-aware techniques
… to be energy-efficient for a variety of operating scenarios. This is in contrast to conventional low-power design, which optimizes for the worst-case scenario. Here, three energy-quality scalable hooks are designed into a real-valued FFT processor: variable FFT length (N=128 to 1024 …
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FPGA-Roofline: An Insightful Model for FGPA-based Hardware Acceleration in Modern Embedded Systems
… and resource utilization by finding the optimal operating point of the system.
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DEVICE DEVELOPMENT AND CHARACTERIZATION FOR SOLID-STATE QUANTUM COMPUTATION
… to evaluate the device feasibility and find the optimal operating point for performing charge sensing and spin readout, which can be used to optimize device design and guide experimental measurement for better qubit performance in versatile spin qubit scenarios. Via increasing the charging energy …
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Optical receiver techniques for integrated photonic links
… perform a system-level optimization to find the optimal operating point for each of the components. This operating point sets the specification for the receiver circuits developed. An equivalent model of the receiver is used to develop a host of split-photodiode topologies that enable new ways to …
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Two new families of high-gain DC-DC power electronic converters for DC-microgrids
… Consequently, each element can function at it optimal operating point regardless of the other elements in the system. In this dissertation, first a comparative study of dc microgrid architectures and their advantages over their ac counterparts is presented. Voltage level selection of dc …
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Inclusion of input saturation in the design of dynamically operable plants
… requirements as constraints within a single optimal plant design problem formulation (Mohideen et at., 1997; Bahri et at.,1996). Young and Swartz (1997) considered the rigorous inclusion of input saturation effects in optimizing control. Actuator saturation introduces discontinuities in the …
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Demonstrating effective all-optical processing in ultrafast data networks using semiconductor optical amplifiers
… multi-packet all-optical header processing unit operating at a line rate of 40 Gb/s. For this experiment, we used the ultrafast nonlinear interferometer (UNI) gate, a discrete optical logic gate which has been demonstrated at speeds of 100 Gb/s for bit-wise switching. However, for all-optical …
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Coding techniques for multicasting
… gains one has to operate very close to the optimal operating point. Next, we study the problem of multicasting to multiple groups with a multiple antenna transmitter. The solution to this problem motivates us to study a multiuser generalization of the dirty paper coding problem. This …
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Finding perceptually optimal operating points of a real time interactive video-conferencing system
… systems in locating a perceptually optimal operating point under various network and conversational conditions. In order to determine the perceptually optimal operating point of a video-conferencing system, we must first be able to conduct a fair assessment of the quality of the …
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Migraine Screening Among A Non-Clinical Sample
… Previous studies have sought to determine optimal symptom algorithms for differentiating migraine from other types of headache or to validate migraine screening measures, but few studies have attempted to do both. The current study attempted to statistically determine the most sensitive and …
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Design and Implementation of High Efficiency, High Power Density Front-End Converter for High Voltage Capacitor Charger
… impact on the design result is studied. the optimal operating point is determined based on the loss comparison between different operating points. In order to further improve the power density utilizing the unique operation mode i.e. pulse power operation, transformer design using …
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A COMPREHENSIVE METHODOLOGY for the OPTIMIZATION of the OPERATING STRATEGY of HYBRID ELECTRIC VEHICLES
… a dedicated optimization of the Hybrid Operating Strategy (HOS) is required. In this framework, simulation plays a key role in identifying the optimal HOS, where the primary design targets are the fuel economy, emission reduction and improvement in the vehicle performance (including …
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Performance assessment of multivariate control systems
… controls automate much of the regulation and set point tracking functions within the process plant, these new tools aim to automate, as much as possible, plant monitoring and root cause diagnosis tasks. Two of the main problems for poor plant performance are bad controller tuning and stiction in …
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Novel many-core architectures for energy-efficiency
… BubbleWrap runs each core at a closer-to-optimal operating point by always aggressively using up all the aging-induced guard-band that the designers have included - preventing any waste of it. Another way to dim dark silicon is reducing the supply voltage to a value only slightly higher …
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Modeling low-pressure nanofiltration membranes and hollow fiber modules for softening and pretreatment in seawater reverse osmosis
… pressure (TMP) was used to define an optimal operating point. Our findings reveal that increasing the TMP could potentially increase energy savings under some operating conditions.
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Condition monitoring of pharmaceutical powder compression during tabletting using acoustic emission
… that employs both the AE method and the receiver operating characteristic (ROC) curve was proposed for the on-line detection of capping and lamination during tabletting. The proposed system employs AE energy as the discriminating parameter to detect between capped and non-capped tablets. The ROC …
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