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The mitigation of power quality issues by means of customized power conditioning systems are of growing interest in recent years. The electricity supply is exposed to more frequent power quality problems, especially due to the steadily increasing integration of decentralized power generation, penetration of renewable energy, and deployment of non-linear converter-based loads. Active power filters...
This study deals the design, simulation and implementation of an isolated Zeta converter based novel cost-effective, dual-colored, step-dimming with power quality improvement at universal AC mains while operating the power factor correction (PFC) converter in Discontinuous Conduction Mode (DCM). The PFC Zeta converter is able to provide regulated output current to a string of LED load of 23 W and...
In this paper a simple technical solution for saving regenerative braking energy in tram systems is analyzed. This technical solution is energy storage system which contains only supercapacitor battery that is connected in parallel with traction substation. For the evaluation of this energy storage system a detailed simulation model in Simulink is developed and experimentally measured tram power diagrams...
Studies show that many people have difficulties in understanding dialogue in movies when watching TV, especially hard-of-hearing listeners or in adverse listening environments. In order to overcome this problem, we propose an efficient methodology to enhance the speech component of a stereo signal. The method is designed with low computational complexity in mind, and consists of first extracting a...
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