Basic elements of power electronic systems. Applications of power electronics.
Classification of power electronic controllers. Power semiconductor devices (PSD).
Classification of PSD. V-I characteristics of the major PSD. Switching characteristics of
PSD. Basic drive circuits of PSD. Line commutated converters. Single-phase half-wave
rectifiers. Single-phase full-wave rectifier configuration. Three-phase half-wave and fullwave rectifiers. Single-phase and three-phase semi-converters. Inversion mode of
operation. Performance characteristics of line commutated rectifiers. Introduction to AC
switching controllers. Introduction to DC-to-DC converters. Introduction to DC-to-AC
converters.
2. Silicon-Controlled Rectifiers (SCRs): Construction and two-transistor equivalent model of an
SCR. Static and dynamic characteristics of SCR switches. Gate characteristics and triggering
circuitry design of SCRs.
3. Rectification Process and Rectifier Circuits: Single-phase half-wave and full-wave rectifiers
(controlled & uncontrolled). Three-phase half-wave and full-wave rectifiers (controlled &
uncontrolled). Single-phase and three-phase semi-controlled rectifiers. This includes power
circuit configuration, triggering signals and conduction pattern, principle of operation,
waveform construction, analysis and solution for resistive, inductive and highly-inductive
loading conditions, performance evaluation both at load and supply sides.
4. Introduction to DC-to-DC Converters (DC Choppers): Classification and basic power circuit
configurations, control topologies and waveform construction, analysis and performance
parameters of basic chopper circuits.
5. Introduction to DC-to-AC Converters (Inverters): Basic power circuit configurations, control
topologies and waveforms construction, analysis and performance parameters of basic
inverter circuits.
