Paper

Power Losses in Long String and Parallel-Connected Short Strings of Series-Connected Silicon-Based Photovoltaic Modules Due to Partial Shading Conditions

The effects of partial shading on Long string. Parallel strings. and Multi-string PV power generators have been investigated by using an experimentally verified simulation model based on the well-known one-diode model of a PV cell. Partial shading was varied with respect to system shading and shading strength. which represent the …

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Frequency regulation in hybrid power systems using particle swarm optimization and linear matrix inequalities based robust controller design

In this paper. the LFC problem was presented using several control algorithms for the power system consisting of different energy sources. The new contribution of this research was the successful simulation of the proposed PSOLMI controller. demonstrating superior performance as compared to other controllers. The results illustrated superior control effort …

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Optimum design of low-voltage distributed photovoltaic systems oriented to enhanced fault ride through capability

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. …

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Grid Interconnection of Renewable Energy Sources at the Distribution Level With Power-Quality Improvement Features

This paper has presented a novel control of an existing gridinterfacing inverter to improve the quality of power at PCC for a 3-phase 4-wire DG system. It has been shown that the grid-interfacing inverter can be effectively utilized for power conditioning without affecting its normal operation of real power transfer. …

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Electric vehicle smart charging and vehicle-to-grid operation

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 …

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Choice of Pole-Slot Number Combination for PM Generator Direct-Driven by Wind Turbine

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 …

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