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EEE 506: HIGH VOLTAGE TECHNOLOGY AND HVDC TRANSMISSION
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| bet | 32/48 | | Sana | 02.01.2024 | | Hajmi | 327 Kb. | | #129611 |
Bog'liq BACHELOR OF SCIENCE ELECTRICAL ELECTRONICS ENGINEERING
Breakdown mechanism in gases, solids, liquids. Dielectrics: properties, effects of temperature, frequency, pressure, humidity and voltage. Ionisation process and decay. Flashover. Characteristics of liquid and plastic dielectrics. Corona: voltages, characteristics, gradient discharges and corona power loss. Generation of high voltages: transformer over-voltages, behaviour and distribution, oscillations and surges. Alternator under-voltage surges. Overhead lines: surges, wave propagation, terminations and surge energy. Lightning and surge protection: shielding, resistance, surge diverters, horn-gaps, arresters and surge modifiers. Measurement of high voltages: sphere gaps, cathode ray oscilloscope, rectifier condenser-current peak voltmeter, potential dividers and tesla coil. High voltage testing equipment: transformers, direct current testing equipment and impulse generator. Non-destructive insulation test techniques. HVDC transmission: HVDC converters, advantages and economic considerations, converter control characteristics, analysis of HVDC link performance, Multi-terminal DC system, HVDC and FACTS
EEE 508: POWER ELECTRONICS AND VARIABLE SPEED DRIVES
DC Machines Drives: DC machine drive dynamics and performance equation, DC machine drive systems. Electronic control of DC drives using rectifier and choppers. Two and four quadrant control for DC machine drives. Transfer function of DC machine drive systems. Speed and current feedback control systems for DC machines drives. Microprocessor control systems for DC machine drives. Application of DC machine variable speed drives in traction including railway traction, lifts etc. AC Machine drive dynamics and performance equation. AC machine drive systems, induction motor drives. Synchronous motor drives. Electronic control of AC drives using inverters. Harmonic distortion and losses. Control of frequency, voltage and power. Transfer functions of AC machine drive systems with speed, current, flux feedback. Microprocessor control of AC machine drives. Applications of AC machine variable speed drives.
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