ABSTRACT
This research presents effect of harmonic generated by variable frequency drives (VFD).In the past, electrical power system equipment and devices were designed to produce nearly sinusoidal voltage and current waveforms. However, nowadays, with much interest and wide spreads of power electronics equipment, for industrials, commercials and residential consumers, these equipment and other electronics devices are no longer operate with an ideal current and voltage waveform, because of the non-linearity of the equipment in nature, with this trend, a Recurrent Neural Network Algorithms with active power filter (SAPF) is implemented for harmonics mitigation on Variable Frequency Drive,because of its simplicity and accuracy among the artificial intelligent family controllers. Simulations were carried out using MATLAB/SIMULINK and SIMPOWER tool box environment to analyze the harmonics distortion. The total harmonics distortions (THD %) of current was calculated using relevant equations. The simulation results are in accordance with the recommended IEEE 519-2014 harmonic standard limits. However, the distortion harmonics in feeder supplying the VFD and soft starter equipment which led to frequent replacement of the drive or out of services also led the Distribution Control System Failure (DCS). 47.17% before and after the application of filter was reduced to 1.80%.
ABSTRACT
This study analysed the published broadcast transcripts of CNN International and Aljazeera English to find out if both news outl...
ABSTRACT
This study was carried out to examine the impact of socio-economic contribution of tourism development in the h...
This project was designed to research into the influence of home background on the academic performance of children in selecte...
ABSTRACT
Drug abuse is becoming an increasing problem in Nigeria. A number of studies carried out in th...
ABSTRACT
This work is aimed at examining the roles of NTA in economic development. It also looked at some of the problems that confront t...
ABSTRACT
This study assesses students’ use of library and ways of improving the use of library by the school&rsquo...
STATENMENT OF THE PROBLEMS
Those engaged in strategic management practices need to be aware of certain often,organization’s externa...
BACKGROUND OF THE STUDY
Education is, without a doubt, the most important instrument for a society'...
ABSTRACT
This study focused on “An assessment of the management of students’ Welfare services in universities in three Geo-Po...
BACKGROUND OF THE STUDY
Any circumstance, whether it be physical or mental, that poses a stress to the body's abilit...