JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Power Systems

Course Objectives:

• To know the static and dynamic breakdown strength of dielectric materials
• To comprehend the importance of energy storage in generators
• To understand the transmission line performance
• To understand the performance of pulse transformers

Course Outcomes

After completion of this course, the student will be able

• To analyze the breakdown strength of dielectric materials
• To have understanding of the applications of energy storage in generators
• To analyze the performance of pulse transformers

UNIT - I

Static and Dynamic Breakdown Strength of Dielectric Materials Introduction – Gases - static breakdown - pulsed breakdown - spark formation – liquids - basic electrical Process - steamer breakdown - practical considerations – solids - General observations - charge Transport, injection and Breakdown - statistical Interpretation of breakdown Strength Measurements.

UNIT - II

Energy Storage Pulse Discharge Capacitors - Marx Generators - classical Marx generators - LC Marx Generator - Basic Pulsed - Power Energy Transfer Stage - inductive energy storage - power and voltage multiplication - rotors and homo polar Generators. Switches: Closing switches - gas switches - semi conductor closing switches - magnetic switches – summary - opening switches – fuses - mechanical interrupters - superconducting opening switches - plasma opening switches - plasma flow switches - semiconductor opening switches.

UNIT - III

Pulse Forming Networks Transmission lines - terminations and junctions - transmission lines with losses - the finite transmission line as a circuit element - production of pulses with lossless transmission lines - RLC networks - circuit simulation with LEITER.

UNIT - IV

Pulse Transmission and Transformation Self magnetic insulation in vacuum lines - vacuum break down in metallic surfaces - qualitative description of self magnetic insulation - quantitative description of self magnitude insulation - pulse Transformers-High Voltage Power supplies - Capacitor-Charging Techniques - Cascade Circuits - Transformation Lines.

UNIT - V

Power and Voltage Adding Adding of Power-Voltage Adding - voltage adding by transit-time Isolation - voltage adding by Inductive Isolation - Blumlein Generators - Cumulative Pulse Lines. Examples of Pulsed-power Generators: Single-pulse generators - KALIF-PBFA 2 and the Z- Machine - HERMES III. Repetitive Generators: RHEPP and Generators with opening switches.

TEXT BOOK:

• 1. “Pulsed Power Engineering”, by Dr. Hasjoachim Bluhm.
• 2. “Pulsed power” by Gennady A. Mesyats, Springer publications M. Tech – I Year – II Sem. (PS H.V. Engg. / H.V. Engg.)