-This paper proposes a new strategy for power quality (PQ) improvement in a 3-Φ grid connected Wind/PV system is proposed in this paper. The Particle Swarm Optimization (PSO) maximum power point tracking (MPPT) scheme has been used to force the PV generation to reach the maximum power operation. A battery energy storage system (BESS) along with a bi-directional DC/DC converter is introduced to ...

The present approach focuses on some specific power supply and power quality issues in hospital environment. This environment is always a special one and changes dramatically one day after another, due to the last decade boom of biomedical engineering. The authors’ opinion is that in medical facilities, one should go beyond the standard EN 50160, on voltage characteristics of electricity suppli...

We present an optimization of the voltage scaling algorithm in low power audio class G amplifier for headphones application to allow longer playback time. The optimization approach minimizes the voltage difference between the internal audio amplifier power supply and its output signal over a large range of operating conditions. The modeling is based on a behavioral model enabling accurate and r...

− In the last years the increased interest about power quality, forced international working groups to define new standards for testing and measurement techniques. In this paper a pc-based power quality instrument is proposed, according to IEC 61000-4-7 and standard IEC 61000-4-30. It is a low-cost and easily reconfigurable instrument able to measure harmonics, interharmonics and amplitude dist...

Verifying the power supply quality of the interface PHY is crucial to achieve multiGigabit data rates. The nature of high-speed interfaces, which are large mixed-signal fullcustom designs, are challenging for commercial EDA tools. We are presenting an on-chip supply analysis flow that allows us to analyze supply noise analysis even for large interface designs with high accuracy. This analysis f...

This paper proposed the reduced rating star connected transformer based interline unified power quality conditioner. This work comprises of unified power quality conditioner connected between the two feeders, star connected transformer and LC filter. This hybrid approach significantly improves the performance of UPQC under unbalance source voltage condition. The UPQC adopted to compensate curre...

Personal computers draw non-sinusoidal current with odd harmonics more significantly. Power Quality of distribution networks is severely affected due to the flow of these generated harmonics during the operation of electronic loads. Switch-mode power supplies (SMPS) are one of the most vital part of PC, typically found in large numbers in modern power supply systems. These devices usually draw ...

This paper describes two stylized alternative visions of how the power system might evolve to meet future requirements for the high quality electricity service that modern digital economies demand, a supergrids paradigm and a dispersed paradigm. Some of the economics of the dispersed vision are explored, and perspectives are presented on both the choice of homogeneous universal power quality up...

This paper presents the survey of the smart grid technologies, including the background, motivation and practical applications. The driving forces for the smart grid technologies are presented, including the blackout, global energy crisis and environmental protection requirement. The key technology issues for building the smart grid are discussed. The crucial elements of the smart grid and thei...