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wiring diagram for new era voltage regulator

Improvement of Power Quality Using PWM Rectifiers

The paper presents the modeling, simulation and analysis of an AC-DC converter based PWM rectifier. It provides a suitable control algorithm for a pulse width modulation rectifier which reduces ripple from the DC output side as well as shapes the input current properly. The basic objective of a PWM rectifier is to regulate the DC output voltage and also ensure a sinusoidal input current and unity power factor operation. This is implemented by high speed IGBT switches connected in anti parallel mode across the rectifier diodes

Coordinated Control of DFIG under Grid Fault  Condition in Wind Energy Conversion System

This paper proposes a coordinated control of rotor side converters (RSCs) and grid side converters (GSCs) of variable speed doubly-fed induction generator (DFIG) based wind generation systems under unbalanced voltage conditions. The control scheme uses stator flux-oriented control for the rotor side converter and grid voltage vector control for the grid side converter. System behaviours and operations of the RSC and GSC under unbalanced voltage are illustrated. The cocoordinated control schemes manage to restore the wind turbines normal operation after the clearance of fault

A Study on Power Line Communication

In this paper, we give an overview of the power line communication (PLC) technology. This paper presents an overview of the research, applications, standards and importance of the power line communication. Power line communication is an emerging home network technology that allows consumers to use their already existing wiring system to connect home appliances to each other and to the Internet. Noise in power line communication and impulsive noise are presented in this paper. The PLC channel is discussed to such an extent

A Miniaturized Ultra Wideband (UWB) Antenna Design  for Wireless Communications

This paper presents a miniaturized planar circular disc UWB antenna design for wireless communications. Printed on a dielectric substrate and fed by 50Ω microstrip line with truncated ground plane, the proposed antenna has been demonstrated to provide an ultra wide 10dB return loss bandwidth with satisfactory radiation properties. The special structure reduces the spatial volume and it is used to realize the miniaturization of the antenna. Ansoft High Frequency structure Simulator (HFSS) software tool has been employed for obtaining the simulation results. The return loss, voltage standing wave ratio (VSWR), radiation patterns and current distributions of the antenna are discussed.

Analysis of policy network of adapting to climate change  in Sudan

This research paper focuses on the analysis of the network that links governmental institutions, non-governmental organizations and United Nations agencies involved in the process of adapting to climate change in Sudan; to find out how they are communicating and cooperating. This paper has adopted qualitative method approach and Desk-based review of various documents and similar research papers as methodology to attain the results. Interviews and focus group discussions have been carried out with key ministries and institutions at national and sub-national levels, executive personnel in local nongovernmental organizations and with some United Nations agencies working in Sudan. The diagram drawn from the data collected during interviews has yielded a visualization of the main actors of the process of adapting to climate change in Sudan. The study has concluded that; using the concepts of network analysis methodologies has helped in acquiring a clear image of

Design of 800 MHz to 1.5 GHz Voltage Controlled  Oscillator for Data Communication

High frequency variable oscillator is central to the construction of high speed clock for data communication. A very wide variable frequency oscillation is designed that could be used in data communication for reliable and fast data transmission. A voltage controlled oscillator in Colpitt configuration is used in the design. The design is found to be capable of producing frequencies from 800MHz to 1.5GHz for a reverse biased voltage (VR) of 0 to 25V while maintaining a good tuning flatness throughout the range. The design is found to be free from noise and frequency variations over the tuning range.

An Improved VCO Design with Negative Feedback to  Reduce Jitter at High Frequencies

This paper presents an improved design of voltage controlled oscillator (VCO) utilizing the three differential cell CMOS inverters for forming the ring oscillator. The differential cell reduces the power supply fluctuations impact on the oscillator jitter while the negative feedback from frequency to voltage converter reduces the jitter at high frequencies. Finally the proposed model is designed using CMOS 0.18um foundry technology and simulated using P-Spice software. The result shows that the proposed design improves the jitter attenuation at different offset frequencies up to 40dB

Concertina Wires and Other Wiring Solutions

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Electrostatic Dissipative Floors

We offer premium grade, high performance finishes that are designed to dissipate electrostatic control properties with consistent resistance to ground readings and extremely low body voltage generation.

Concertina Wires and Other Wiring Solutions

These can be expanded in the manner of a concertina. These wires are mainly used for the formation of military obstacles and this is what makes them really indispensable. Going by the latest advancements in science and technology, these wires are produced in factories in recent times and were individually created by soldiers at the time of World War . For More Detail:

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