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 127 for “"Active Power"”.
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Hybrid Active Power Filter with Output Impedance Control
… 1 nH (1 billionth of a Henry) inductance in a power delivery path was considered inconsequential a decade ago, it is now a barrier to implementing a design. Similarly, the equivalent series inductance (ESL) of a capacitor plays an increasing (and detrimental) role in the behavior and design of …
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Adaptive protection solutions for future active power distribution networks
Power distribution networks are undergoing a continuous evolution from being passive to active in nature, with increasing penetration of distributed generation and the introduction of active network management schemes to facilitate increased distributed generation connections, automatically manage …
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Active Power Decoupling (APD) Converter for PV Microinverter Applications
… is continuously growing. Photovoltaic (PV) power and its integration into the utility grid are gaining increasing traction. To lower the levelized cost of energy (LCOE) of PV systems, enhance the adoption of PV applications, and ensure the delivery of high-quality power to the utility grid, …
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Proof of concept data logger for non-active power
… laptop which is able to meet the requirements of power measurements, such as those for non-active power, that need relatively high frequency, simultaneous sampling. An Analog Devices ADE7878 energy measurement IC is used for measurement of a three phase system instantaneous voltage and current. A …
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Controlling harmonic distortion in power electronics using active power filters
Power electronics are used in power systems extensively for power conversion and control, but can generate harmonic distortion in the current that is being drawn. Harmonic distortion can have deleterious effects on the power system, degrading power quality, system performance, and efficiency. …
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Design and implementation of a single phase active power filter
Various active filter solutions have been proposed in recent years {I], {2], and are still being widely investigated today. This thesis discusses the design and implementation of the shunt AP F topology.
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Design and analysis of an active power factor correction circuit
The design of an active-unity power factor correction circuit with variable-hysteresis control for off-line dc-to-dc switching power supplies is described. Design equations relating the boost inductor current ripple to the circuit components selection and circuit performance arc discussed. A …
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Development of a single phase active Power filter for rectifier load
… presents the employment of a single-phase active power filter (APF) to compensate harmonics generated by battery charger. The presence of the harmonics leads to various problems and poor power quality. The objectives of this project are to reduce the harmonic distortion of the single-phase …
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Active power ancillary service provision of commercial building energy storage resources
… and analyze their effects on operations of power grids and electricity markets. Specifically, novel control schemes of plug-in electric vehicles (PEVs) and variable speed heat pumps (VSHPs) are proposed to improve grid frequency regulation (GFR) and day-ahead (DA) electricity market …
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Optimisation of a power distribution network's active power loss and reliability performance
The deregulation of UK power distribution market started in 1990. Due to the drivers from the regulator, DNOs need to invest appropriately and optimise network operation by innovations to satisfy the targets set by the industry regulator, the Office of Gas and Electricity Markets (Ofgem). Reduction …
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Bridgeless Active Power Factor Correction Using a Current Fed Push Pull Converter
… <p>Bridgeless Active Power Factor Correction</p> <p>Using a Current Fed Push Pull Converter</p> <p>Jeramie Seth Bianchi</p> <p> Switched Mode Power Supplies have become increasingly popular for efficient methods of delivering power to an assortment of electronic …
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Measurement of Working, Reflected, and Detrimental Active Power in a Three Phase System
Study of the decomposition of the active power into composite components with respects to power industry economics namely, working active power, reflected active power, and detrimental active power. The working active energy is considered the permanent flow of useful energy to the load that results …
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Comparison and testing of active power control strategies for grid-connected wind turbines
Includes bibliographical references (leaves 70-72).
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Coordinated active power reduction strategy for voltage rise mitigation in LV distribution network
… customers, and the third party into the electric power system, most especially in the MV and LV distribution networks grew over the last decade due to the liberalization of the electricity market, rising energy demand, and increasing environmental concern. The distributed rooftop PV system …
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Design of shunt active power filter to mitigate the harmonics caused by nonlinear loads
… the design and application of three-phase shunt active power filter (SAPF) by using p-q theory to mitigate the harmonics which are created by nonlinear loads. To obtain result for this paper, the MATLAB / Simulink was used as a simulation tool. The achieved results are within the recommended …
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Resonant-type architectures for active power decoupling in grid-tied single-phase power electronics
In single-phase power converters, twice-line frequency power decoupling circuits are used to buffer the instantaneous energy difference between the AC and DC sides of the converter. Active buffer implementations are used to reduce the volume and potentially improve the reliability of the converter …
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Voltage Balancing Techniques for Flying Capacitors Used in Soft-Switching Multilevel Active Power Filters
… capacitors used in soft-switching multilevel active power filters. The proposed active filter has proved to be a solution for power system harmonics produced by static high power converters. However, voltage unbalance of the clamping capacitors in the active filter in practical applications …
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Sum-rate maximization in multi-RIS multi-carrier systems through active power allocation and passive beamforming
… In this work, we jointly optimize the transmit power at the base station (BS) and the passive beamforming of RIS reflecting elements to maximize the achievable rate at the user’s location. Three RIS reflection model assumptions are considered and analyzed. In Scenario A, we establish upper and …
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