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Showing 1 to 13 of 13 for “"electrolytic capacitor"”.
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Stacked-Switched Electrolytic Capacitor-less AC/DC Power Converters
… AC/DC converters often depend on bulky electrolytic capacitors, diode bridges, and hard-switching circuits, leading to reduced reliability, increased losses, and limited power density. Additionally, the need for bidirectional energy flow—such as Vehicle-to-Grid (V2G) and Vehicle-to-Home …
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Condition Monitoring of Electrolytic Capacitors for Power Electronics Applications
… to advance the field of condition monitoring of electrolytic capacitors used in power electronics circuits. The construction process of an electrolytic capacitor is presented. Descriptions of various kinds of faults that can occur in an electrolytic capacitor are discussed. The methods available …
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High Efficiency SEPIC Converter For High Brightness Light Emitting Diodes (LEDs) System
… lifetime limitation of LED driver imposed by electrolytic capacitor has to be resolved. Therefore, an LED driver without electrolytic capacitor in the whole power conversion process is preferred. In this thesis, a single phase, power factor correction converter without electrolytic capacitors …
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Determination of the Shelf Life of Aluminum Electrolytic Capacitors.
The aluminum electrolytic capacitor is used extensively in the electric utility industry. A factor limiting the storage of spare capacitors is the integrity of the aluminum oxide dielectric, which over time breaks down contributing to a shelf life currently estimated at one nuclear power electric …
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The Synthesis Of High Surface Area Ti Sponges By Halide Conversion Process For Capacitor Anodes
… be used as an anode with porous structure for an electrolytic capacitor. TiI4 and Ca as the reduction agent were used in the conversion process to obtain open-porous Ti sponges. By changing the reduction temperature and time of the conversion process, Ti sponges with different particle sizes were …
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DC Reluctance Machine — A Doubly-Salient Reluctance Machine with Controlled Electrical and Mechanical Power Ripple
… to RMs have been (1) the need for failure-prone electrolytic capacitors, (2) large torque ripple, and (3) acoustic noise. Conventionally, these drawbacks have been addressed independently either through (1) excitation control or (2) machine design, but not as a holistic system or solution. This …
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Analytical solutions of the steady or unsteady heat conduction equation in industrial devices: A comparison with FEM results
… representation of the results. Namely; in an electrolytic capacitor, a food container and a gas turbine blade. The modelling of them plays an important role because excessive temperatures drastically reduce the lifetime of capacitors, turbine vanes and blades. In the food sterilization it is …
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ANALYSIS, OPTIMIZATION, AND PRACTICAL DESIGN OF A SPLIT-PHASE DICKSON SWITCHED CAPACITOR CONVERTER FOR HIGH CURRENT APPLICATIONS
The Switched-Capacitor Converter (SCC) topology has been gaining attention from researchers because of their advantages of higher power density, better switch utilization, and low component stress. However, SCCs have a fundamental downside in which capacitor charge redistribution causes significant …
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Active Power Decoupling (APD) Converter for PV Microinverter Applications
… is the short lifetime and poor reliability of electrolytic capacitors used for decoupling the double line frequency (DLF) power. To eliminate the less reliable electrolytic capacitor, the active power decoupling (APD) technique is widely adopted. Various topologies can be used for APD, but the …
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Comparison and Design of High Efficiency Microinverters for Photovoltaic Applications
… not propagate to the PV panel a large bank of electrolytic capacitors are used to buffer the ripple. There is concern that the electrolytic capacitor will degrade over time and affect the system efficiency. To get around having to use electrolytic capacitors a two stage microinverter has been …
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High performance electronic systems for high bay light emitting diodes fed from alternating current power grids
… provide galvanic isolation and could remove the electrolytic capacitor while keeping a flicker free performance that should be ensured by meeting the requirements set by Practice 1 of the IEEE Std. 1789-2015. The newly proposed flicker standard ensures the achievement of good light quality, …
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High Efficiency Single-stage Grid-tied PV Inverter for Renewable Energy System
A single-phase grid connected transformerless photovoltaic (PV) inverter for residential application is presented. The inverter is derived from a boost cascaded with buck converter along with a line frequency unfolding circuit. Due to its novel operating modes, high efficiency can be achieved …
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Single-stage boost integrated asymmetrical half-bridge AC-DC power converter with dual modulation for indoor led lighting
… also helps in eliminating the need of bulk electrolytic output capacitors hence enhancing the life time of power supplies. The thesis also includes optimizing the DC link voltage. Design of magnetics for the converter has been carried out. Analytical and simulation results are presented as …