Renewables and Efficiency

In this paper. the design aspects of low-voltage DG-PV units were investigated in order to comply with LVRTC requirements. The theoretical analysis revealed how the impedance of the DG units affects the bus voltages of the distribution network after a fault occurrence. Moreover. the concept of voltage selectivity is defined. …

The properties of the most recent CIGS solar cells with conversion efficiencies up to 21.7% show a remarkable increase in Jsc. a high Voc level and improved FF when compared to former record results. The significant increase in Jsc can be explained by an optical gain through a thinner CdS …

In this paper. a novel approach has been proposed to manage and improve the quality of the grid power using a WECS equipped by a DFIG. The RSC is controlled in such a way to manage between production of maximum active power and power quality improvement without any over-rating. The …

In this paper. a novel fast short circuit current detection technique is proposed for PV inverter based DGs. The proposed short circuit current detector is based on the evaluation of the slope (d dt) and magnitude of the PV inverter current. As soon as it detects a fault that is …

A comprehensive system leveraging mobile and RFID technologies. aggregation middleware and an aggregated charge-scheduling algorithm that effectively schedules charging and V2G operations for cost savings and peak load reduction has been presented. Intelligently scheduled charging yields a cost savings of 7% for enterprise commuters and 10% for drivers with variable …

As the demand for “green“ energy increases the offshore wind power industry is expanding at a rapid pace around the world. Design of Foundations for Offshore Wind Turbines is a comprehensive reference which covers the design of foundations for offshore wind turbines. and includes examples and case studies. It provides …

This book presents currently available renewable energy technologies (RETs) and explores their possible integration into the economically viable and green residential microgrids of tomorrow. The emphasis is on the importance of RETs in today’s energy-efficient building designs. and on those RET mathematical models suitable for both performance simulation and economic …

Based on comparative study on different pole-slot number combinations and pole-arc coefficients for the 1.5MW directdriven PM wind generator. the following conclusions can be deduced: 1) The pole-slot number combination has significant effect on the positioning torque at no load. Choosing the fractional slot number per pole and per phase …

In this paper. we proposed a multilevel approach for optimal participation in reactive power balancing of wind farms connected to the transmission grid. For this purpose. we defined reactive power capability of a DFIG wind turbine. Afterwards. we proposed a method to find the reactive power capability of a wind …

In this paper. the harmonic emissions of a 30 × ۶۰۰ kW WT SCIG wind farm are analyzed using field measurements to contribute to the understanding of wind farm harmonic behavior. The following conclusions can be drawn from the investigation. 1) Low-order characteristic harmonics are the dominant ones in the …