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This document appears to be related to engineering plans for a turbine generator building at the Shell Carmon Creek site. It references a 3D model file for roof bracing changes to the building and provides results from loading case 3 under negative X direction wind loading.
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Part of Lecture series on EE321N, Power Electronics-I delivered by me during Fifth Semester of B.Tech. Electrical Engg., 2012
Z H College of Engg. & Technology, Aligarh Muslim University, Aligarh
Please comment and feel free to ask anything related. Thanks!
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Part of Lecture series on EE321N, Power Electronics-I delivered by me during Fifth Semester of B.Tech. Electrical Engg., 2012
Z H College of Engg. & Technology, Aligarh Muslim University, Aligarh
Please comment and feel free to ask anything related. Thanks!
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Part of Lecture series on EE321N, Power Electronics-I delivered by me during Fifth Semester of B.Tech. Electrical Engg., 2012
Z H College of Engg. & Technology, Aligarh Muslim University, Aligarh
Please comment and feel free to ask anything related. Thanks!
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Part of Lecture series on EE321N, Power Electronics-I delivered by me during Fifth Semester of B.Tech. Electrical Engg., 2012
Z H College of Engg. & Technology, Aligarh Muslim University, Aligarh
Please comment and feel free to ask anything related. Thanks!
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Please comment and feel free to ask anything related. Thanks!
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This document discusses cycloconverters, which are devices that convert input power at one frequency to output power at a different frequency in a single stage. It describes the types of cycloconverters including step up, step down, single phase to single phase, and three phase. It provides details on the principles and operation of single phase cycloconverters including mid-point and bridge types for step up and step down conversion. It also discusses three phase to single phase and three phase to three phase cycloconverters. Applications mentioned include speed control drives and induction heating.
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L17 equidistant pulse firing scheme
Part of Lecture series on EE321N, Power Electronics-I delivered by me during Fifth Semester of B.Tech. Electrical Engg., 2012
Z H College of Engg. & Technology, Aligarh Muslim University, Aligarh
Please comment and feel free to ask anything related. Thanks!
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Cycloconverters are used to convert AC power directly to AC power of variable magnitude and frequency. They have four main advantages over conventional AC to DC to AC conversion: they do not require an intermediate DC link, allow bidirectional power flow, can produce high quality sine waves at low frequencies without filters, and are line commutated without a separate commutation circuit. Cycloconverters are commonly used to drive large induction and synchronous motors at frequencies from 0-20Hz, such as in cement mill, ship propulsion, rolling mill, and mine applications. However, they have disadvantages of not allowing smooth stepless frequency control, producing more distortion at low frequencies, and having a more complex control circuit design.
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This document describes the operation of a full wave bridge rectifier circuit. It explains that two diodes conduct during the positive half cycle and the other two conduct during the negative half cycle, allowing current to flow through the load in only one direction. This produces a full wave rectified output with both half cycles used. The input AC waveform is shown along with the rectified DC output waveform. Advantages of the bridge rectifier are listed as not requiring a center-tapped transformer and producing twice the output of a center-tap circuit for the same secondary voltage. Disadvantages include requiring four diodes and having double the voltage drop across the diodes compared to a center-tap rectifier.
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The document describes a project to design a cyclo-converter with an RLC load. Key points:
1. The proposed design uses a single input multiple output system with a diode rectifier and H-bridge series resonant inverter to obtain multiple outputs from a single input with reduced switching losses.
2. An RLC load is used to obtain a resonant frequency of 30kHz and maintain constant voltage and current at the load with unity power factor.
3. MATLAB will be used to simulate the power circuit and a PIC16F877 microcontroller with Keil software will be used to control the circuit.
Design of a 100W Radiation Tolerant Power Factor Correction Buck AC/DC Converter
Dr. Lalit Patnaik presented the design of a 100W radiation-tolerant power-factor-correction buck AC/DC converter for use in the High Luminosity LHC project. The design uses commercial off-the-shelf components to convert an AC input of 90-265V to a 48V DC output while maintaining a power factor over 0.9 and efficiency of around 90%. Simulation and preliminary testing validated the design, which will undergo further radiation testing to evaluate performance under total ionizing doses up to 300Gy and single event effects from proton beams. The proposed buck converter topology was shown to provide advantages over a boost topology for this application in terms of component selection and reliability.
Cycloconverter
This document discusses a 1-phase to 3-phase cycloconverter that is used to drive induction motors in single-phase traction systems. It describes two control methods for the cycloconverter - constant firing angle and cosine wave crossing method. The cosine wave crossing method provides better results by firing each SCR at a different angle to avoid short circuit conditions for high inductance/resistance loads. Typical firing angles for this sequence are 77, 57, 25, 0, 35, and 72 degrees.
CATS Brochure
The CATS system provides a flexible, automated solution to assist with testing and commissioning railway interlockings. It can simulate signalling equipment and routes to allow for advanced function and principles testing without requiring track possessions. This reduces personnel needs, testing time, and risks associated with commissioning. CATS has been used successfully on various projects in the UK to test interlockings and geographical sets.
A basic presentation on cycloconverter
This document presents information on cycloconverters. It begins by defining a cycloconverter as a type of AC-AC converter that converts alternating current (AC) from one frequency to another without an intermediate direct current (DC) link. It then describes the two main modes of operation for cycloconverters: blocking mode and circulating current mode. The document goes on to discuss different types of cycloconverters including matrix, single-phase-to-single-phase, and three-phase-to-three-phase cycloconverters. It concludes by listing some applications and advantages of cycloconverters, along with limitations.
New Five-Level Active Neutral-Point-Clamped Converter With Reduced Over volta...
The paper analyses these over voltages in the five level active neutral-point-clamped (5L-ANPC) converter, one of the most popular five level converters and employed by ABB in its ACS-2000 drive.
Typical 5L-ANPC is having over voltages almost 3 times higher than those corresponding to a two-level converter.
In order to overcome this problem, the paper presents a new 5L-ANPC with the same characteristics (number of semiconductors, output waveform, switching frequency, efficiency, etc.), but with smaller over voltages.
Transformer
Single-phase transformers have two adjacent coils that are not physically connected. An alternating current in the primary coil produces a changing magnetic field that induces a voltage in the secondary coil. Transformers can be connected in various configurations including wye-wye, wye-delta, delta-wye, and delta-delta to step up or step down voltages depending on the ratio of turns in the secondary coil to the primary coil.
Even Harmonic Injection
An Investigation into Even Harmonic Injection in Pole Voltages of a Single Phase Inverter: Presented at National Power Electronics Conference (NPEC) 2010 at Roorkee, India.
Edc lab 4 - to implement a half wave rectifier using diode
This document describes an electronics lab experiment on implementing a half wave rectifier using a diode. The objectives are to build a half wave rectifier circuit using a diode, load resistance, capacitor, oscilloscope and signal generator. The procedure instructs how to connect the components, observe the rectified output on an oscilloscope, and measure input and output voltages with and without the capacitor. A lab report is required with the circuit diagram, procedure, measurements, equipment list, and expected output graph.
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Design and implementation of cyclo converter for high frequency applications
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Design of a 100W Radiation Tolerant Power Factor Correction Buck AC/DC Converter
New Five-Level Active Neutral-Point-Clamped Converter With Reduced Over volta...
New Five-Level Active Neutral-Point-Clamped Converter With Reduced Over volta...
Edc lab 4 - to implement a half wave rectifier using diode
Edc lab 4 - to implement a half wave rectifier using diode
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- 1. Steel Building Experts Arash Jalalpour 140406 Shell Carmon Creek Turbine Generator Building (Without Duct) SK - 4 May 15, 2015 at 1:41 PM 140710 Carmon creek roof bracing change 2.r3d Y X Z Results for LC 3, WL -X