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Full-Text Articles in Engineering
Low-Frequency Series Loaded Resonant Inverter Characterization, Alfredo Medina
Low-Frequency Series Loaded Resonant Inverter Characterization, Alfredo Medina
Master's Theses
Modern power systems require multiple conversions between DC and AC to deliver power from renewable energy sources. Recent growth in DC loads result in increased system costs and reduced efficiency, due to redundant conversions. Advances in DC microgrid systems demonstrate superior performance by reducing conversion stages. The literature reveals practical DC microgrid systems composed of wind and solar power to replace existing fossil fuel technologies for residential consumers. Although higher efficiencies are achieved, some household appliances require AC power; thus, the need for highly efficient DC to AC converters is imperative in establishing DC microgrid systems. Resonant inverter topologies exhibit …
Arc Fault Circuit Interrupter Development For Residential Dc Electricity, Cassidy Alan Aarstad
Arc Fault Circuit Interrupter Development For Residential Dc Electricity, Cassidy Alan Aarstad
Master's Theses
The following technical report describes the development and testing of an arc fault circuit interrupter (AFCI) for DC circuits operating primarily at 48 volts. We have identified an effective method for determining when arcing is occurring. Our method is primarily based on comparing the frequency spectrum of current flowing through the circuit during an arcing event to a known characteristic spectrum. Once an arc has been identified, our interrupter is capable of responding adequately to eliminate the arc. Hardware tests show the AFCI developed in this thesis responded, in all test cases, within 2 seconds of an arc fault occurrence. …
Wide-Band Gap Devices For Dc Breaker Applications, Olukayode O. Sodipe
Wide-Band Gap Devices For Dc Breaker Applications, Olukayode O. Sodipe
Master's Theses
With the increasing interest in wide-band gap devices, their potential benefits in power applications have been studied and explored with numerous studies conducted for both SiC and GaN devices. This thesis investigates the use of wide-band gap devices as the switching element in a semiconductor DC breaker. It involves the design of an efficient semiconductor DC breaker, its simulation in SPICE, construction of a hardware prototype and the comparative study of SiC and Si versions of the aforementioned breaker. The results obtained from the experiments conducted in the process of concluding this thesis show that the SiC version of the …