Active Power Filter With Automatic Control Circuit For Neutral Current Harmonic Minimization Technique [QC446.3.H37 I98 2007 f rb].

Disertasi ini bertujuan untuk membangun penuras kuasa aktif yang cekap dan boleh dipercayai bagi meminimumkan lebihan harmonik arus neutral dan juga masalah harmonik di dalam talian neutral untuk sistem tiga fasa empat dawai. The aim of this thesis is to develop an efficient and reliable active power filter in order to minimize the excessive neutral current as well as harmonic problem in the neutral line for three phase four wire system

Pengaruh Perendaman Benih Dalam Cao Dan Pemupukan P Dan K Terhadap Pengendalian Keracunan Besi Pada Tanaman Padi Di Lahan Sulfat Masam Potensial [the Effect of Soaking Seeds in Cao and P and K Fertilization on the Controling of Iron Toxication to Rice in Potentially Sulphate Acid Soil]

Tidal land large enough sour sulfate and the potential for agricultural expansion. Obstacles encountered primarily stress iron poisoning. It has the potential to cause a decline in rice yield research aims to study the effect of the influence of seed treatment and fertilizer P and K to control iron toxicity in acidic sulfate potential land. This research was carried out in KP Belandean on MK 2007. Randomized block design with 3 replications. Rice varieties used were Batanghari, planted on plot measuring 4 mx 9 m with a spacing of 20 cm x 20 cm. Package combined treatment of seeds and fertilizer P and K: 1. (25-90-75), 2. (50-90-75), 3. (75-90-75), 4. (100-90-75), 5. (125-90-75), 6. (75-30-75), 7. (75-60-75), 8. (75-120-75), 9. (75-150-75), 10. (75-90-25), 11. (75-90-50), 12. (75-90-100), 13. (75-90-125), 14. (0-90-75), 15. (0-0-0) kg / ha% CaO-kg / ha P2O5-K2O. The result showed that by giving a dose of phosphate fertilizer 90 kg/ha P2O5 and potassium at a dose of 100-125 kg/ha K2O CaO combined with the provision of 75 % of the weight of the seed, is the combination to control iron poisoning

Hubungan Pengetahuan, Personal Hygiene, dan Sumber Air Bersih dengan Gejala Penyakit Kulit Jamur di Kelurahan Rantau Indah Wilayah Kerja Puskesmas Dendang Kabupaten Tanjung Jabung Timur Tahun 2013

Pengetahuan masyarakat tentang gejala penyakit kulit jamur, personalhygiene masyarakatyang meliputi kebersihan kulit, kebersihan handuk, kebersihan pakaian, dan kebersihan tangandan kuku, serta sumber air bersih yang digunakan oleh warga di Desa Rantau Indah KabupatenTanjung Jabung Timur. Tujuan dari penelitian ini adalah untuk mengetahui gambaran danhubungan dari pengetahuan, personalhygiene, dan sumber air bersih dengan gejala penyakitkulit jamur di Desa Rantau Indah Kabupaten Tanjung Jabung Timur.Penelitian ini adalah penelitian cross sectional (potong lintang)yang bertujuan untuk mengetahuihubungan antara variabel independen dengan variabel dependen. Populasi dalam penelitiandengan jumlah 14999 jiwa, besar sampel 95 responden. Cara pengambilan sampel dilakukandengan cara Simple Random Sampling. Untuk analisa digunakan analisa bivariat, dengan ujiChi-Square.Terdapat hubungan yang bermakna antara pengetahuan dengan gejala penyakit kulit jamurdengan p value< 0,05 yaitu 0,023; Terdapat hubungan yang bermakna antara personal hygienedengan gejala penyakit kulit jamur. Untuk kebersihan kulit p value< 0,05 yaitu 0,025, kebersihantangan dan kuku dengan gejala penyakit kulit jamur dengan p value< 0,05 yaitu 0,009,kebersihan handuk dengan gejala penyakit kulit jamur dengan p value< 0,05 yaitu 0,017,kebersihan pakaian dengan gejala penyakit kulit jamur dengan p value< 0,05 yaitu 0,029;Terdapat hubungan yang bermakna antara sumber air bersih dengan gejala penyakit kulit jamurdengan p value< 0,05 yaitu 0,006

Intelligent Voltage Sag Compensation Using an Artificial Neural Network (ANN)-Based Dynamic Voltage Restorer in MATLAB Simulink

An innovative Dynamic Voltage Restorer (DVR) system based on Artificial Neural Network (ANN) technology, implemented in MATLAB Simulink, accurately detects, and dynamically restores voltage sags, significantly improving power quality and ensuring a reliable supply to critical loads, contributing to the advancement of power quality enhancement techniques. Voltage sags are a prevalent power quality concern that can have a significant impact on sensitive electrical equipment. An innovative approach to address voltage sags through the operation of a Dynamic Voltage Restorer (DVR) based on Artificial Neural Network (ANN) technology. The proposed system, developed using MATLAB Simulink, leverages the ANN's capabilities to accurately detect voltage sags and dynamically restore the voltage to the affected load. The ANN is trained using a comprehensive dataset comprising voltage sag events, enabling it to learn the intricate relationships between sag characteristics and optimal compensation techniques. By integrating the trained ANN into the DVR control scheme, real-time compensation for voltage sags is achieved. The effectiveness of the proposed system is rigorously evaluated through extensive simulations and performance analysis. The results demonstrate the superior performance of the ANN-based DVR in terms of voltage sag detection accuracy and restoration precision. Consequently, the proposed system presents an intelligent and adaptive solution for voltage sag compensation, ensuring a reliable and high-quality power supply to critical loads. This research contributes to the advancement of power quality enhancement techniques, facilitating the implementation of intelligent power system

Intelligent Voltage Sag Compensation Using an Artificial Neural Network (ANN)-Based Dynamic Voltage Restorer in MATLAB Simulink

An innovative Dynamic Voltage Restorer (DVR) system based on Artificial Neural Network (ANN) technology, implemented in MATLAB Simulink, accurately detects, and dynamically restores voltage sags, significantly improving power quality and ensuring a reliable supply to critical loads, contributing to the advancement of power quality enhancement techniques. Voltage sags are a prevalent power quality concern that can have a significant impact on sensitive electrical equipment. An innovative approach to address voltage sags through the operation of a Dynamic Voltage Restorer (DVR) based on Artificial Neural Network (ANN) technology. The proposed system, developed using MATLAB Simulink, leverages the ANN's capabilities to accurately detect voltage sags and dynamically restore the voltage to the affected load. The ANN is trained using a comprehensive dataset comprising voltage sag events, enabling it to learn the intricate relationships between sag characteristics and optimal compensation techniques. By integrating the trained ANN into the DVR control scheme, real-time compensation for voltage sags is achieved. The effectiveness of the proposed system is rigorously evaluated through extensive simulations and performance analysis. The results demonstrate the superior performance of the ANN-based DVR in terms of voltage sag detection accuracy and restoration precision. Consequently, the proposed system presents an intelligent and adaptive solution for voltage sag compensation, ensuring a reliable and high-quality power supply to critical loads. This research contributes to the advancement of power quality enhancement techniques, facilitating the implementation of intelligent power system

Magnetic Pulse Acceleration

The present work is dedicated to describing works in the spheres of simulation, calculation, and experimental results of acceleration by pulsed electromagnetic forces where strain rates of 10,000 - 50,000 s^(-1) are common. The goal is to design a multidisciplinary model that will overcome the shortcomings of normal simulation methods that solve the EM field and then apply the solution in a mechanical analysis. Improved numeric models for virtual simulation of magnetic pulse processes are detailed, along with the pulse-power equipment and a special measurement system developed to verify these models and to determine material property data. These measure both radial velocity and axial speed (collision-point progression) for tube forming and / or welding processes, while logging the pulse current and magnetic field. The results show good a correlation between test and multiphysics model and provide valuable new insights, as well as an extraction of critical parameters by way of a comparison between calculated and measured data for materials such as aluminum alloys, copper, and steel

Pulsed Power Forming

R&D and application work in the sphere of Pulsed Power Forming (PPF) is well known and has been documented since the 1960's, along with its advantages. Pulsed Power Forming applications, which have been developed at Pulsar Ltd over the last decade, are described in this paper. Special equipment and tools for forming have been designed, developed, and manufactured, utilising pulsed magnetic fields. Theoretical and experimental research has been carried out to determine the magnetic field distribution in certain types of solenoids for diameters up to 600 mm. The software for mechanical pressure simulation and calculation has been carried out. Research and application of forming by electrical discharge into liquid medium have been carried out with higher deformation than it has been attained by the classic processes. Flat forming, cutting, and/or perforating of very thin materials (with thicknesses in the range of 0,1 up to 0,3 mm), such as aluminium, steel, stainless steel, nickel alloys, etc., have been made by applying high magnetic field with elastic medium. In addition, forming and cutting of a steel tube with ~100 mm OD and a wall thickness up to 3 mm have been executed using direct high pulse magnetic field action. Aluminium tubes with OD ~100 mm and a wall thickness less than 0,5 mm have also been similarly processed

Peranan Orang Tua dan Sekolah dalam Mengantisipasi Anak Putus Sekolah

This research was motivated by the desire of researchers to determine the role of parents and schools in anticipation of school dropouts in MTs Pesantren Al-Khoiriyah Turmeric River District Mempawah Year 2014-2015. Sub problem in this research are as follows: 1) how is the role of parents in anticipation of school children in boarding AL-Khoiriyah Turmeric River District Mempawah Year 2014-2015, 2) how the role of the school in anticipation of school children in boarding AL-Khoiriyah Turmeric River Mempawah Regency Year 2014-2015. The results showed: First, the role of parents and schools in anticipation of school dropouts in MTs Pesantren Al-Khoiriyah Turmeric River Mempawah Regency Year 2014-2015 ie, caregiving, instill a love between people, justly, pay attention to children's friends, put in a good environment. Second, the role of the school in anticipation of school dropouts in MTs Pesantren Al-Khoiriyah Turmeric River Mempawah Regency Year 2014-2015 is the school created a situation which could pose school students to remain at home in learning, making clear regulations, making the classroom a comfortable , good work between teachers and schools, the implementation of the BK good, good relationships between the school and parents