Adaptive Control of a Step-Up Full-Bridge DC-DC Converter for Variable Low Input Voltage Applications Elton Pepa Thesis submitted to the faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering Approved: ____________ok_________________ Dr. Jason Lai (Chair) ____________________ Dr. Krishnan Ramu ____________________ Dr. William T. Baumann February 6‚ 2004 Blacksburg
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1. INTRODUCTION Electrical substation for distribution system is the main supply to convert the high voltage (HV) to low voltage (LV) and the place where load are distributed to the consumers. In Malaysia‚ Tenaga Nasional Berhad Distribution (TNBD) used the 33/0.433kV‚ 22/0.433kV‚ 11/0.433kV and 6.6/0.433kV voltage system for the electrical system to supply for domestic consumer and industrial consumer such as factory which will supplied directly from Transmission Main Intakes (PMU)‚ Main Distribution
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Physiology from the menu at the top of the screen. Then choose Single Stimulus. The screen should look like Figure 16B.1 in the Lab Manual. Take a minute to identify the oscilloscope display‚ muscle sample in holder‚ stimulator‚ voltage control‚ data recording area‚ time display‚ and force display. The muscle length should always remain at 75 mm. • Any time you are instructed to Print‚ make a copy for each person in
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cells to the Sun. Around the plane‚ a column of cardboard was constructed with black fabric covering the inside and bottom surfaces to prevent unwanted reflections. The time of day‚ temperature‚ voltage‚ and current was collected for everyone-degree change in angle. Using Microsoft Excel‚ the data of the voltage‚ and current was graphed with respect to angle. Introduction: The energy extracted from solar radiation by solar cells is vital to expanding our source of energy. Alternative sources of energy
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currents which flow through the electric power network. They cancel out in generators and other consumers. The results of those currents are harmonic voltages. Both harmonic voltages and canceling out harmonic currents affect performance of other consumers connected to the electric power network. Because most electrical systems were designed for linear voltage and current waveforms (i.e. nearly sinusoidal)‚ excessive nonlinear loads can cause serious problems such as overheating conductors‚ transformer
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we used two strain gages on the inside and outside of a load cell to measure the mass of hanging weights as a function of voltage. As the resistance of a wire is proportional to its length‚ forces that deform the gages will be directly proportional to changes in their resistances. Creating a Wheatstone bridge with the strain gages allows for measuring a differential voltage‚ which is then amplified by an instrumentation amplifier. Strain gage circuits like this one are used widely‚ from bathroom
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comparator components. Good design techniques now dictate using a comparator instead of an operational amplifier. There are ways of safely using an operational amplifier as a comparator – if the output stage is designed to be used that way as in a voltage limiting operational amplifier – or if clamping is added externally that prevents the output from saturating. These applications are shown. •= Testing Operational Amplifiers – a section that had become hopelessly outdated. Testing techniques
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Figure 1. Mask set design. Shown is a single “mask unit cell” and its contents. Each completed 2 inch wafer contains roughly forty whole mask cells. ECE 4752 Wafer Test Procedures In order to evaluate the electrical characteristics of the CMOS devices fabricated in ECE/ChBE 4752‚ a probe station is used to connect test equipment to the devices on-wafer. This is accomplished by positioning probes with mechanical manipulators such that their tips rest on metal pads on the wafer. Care must be
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RMIT UNIVERSITY SCHOOL OF ELECTRICAL AND COMPUTER ENGINEERING EEET-2257 : DESIGN 2 LAB 1 : SCHEMATIC CAPTURE AND SIMULATION WITHIN ALTIUM AIM The primary aim of this laboratory class is to gain familiarity with the following concepts: 1. Schematic capture of electronic circuits using Altium. 2. Simulation of the time domain and frequency domain responses of electronic circuits using Altium (DXP). REFERENCES A. S. Sedra‚ K. C. Smith‚ Microelectronic Circuits‚ 6th Edition‚ Oxford University
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TABLE OF CONTENTS SI.NO Chapter Names Page No 1. Introduction 3 2.1 Substation 3 2.2 History 4 2.3 Duties 5 2.4 Linemen safety 7 2. Block diagram 9 3.5 Description of block diagram 10 3.6 Circuit description 11 3. Hardware requirement specification
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