Description
Power devices – characteristics of SCR, DIAC, TRIAC, power transistors, Protection of thyristors against over-voltage and current. SCR triggering – dv/dt and di/dt, triggering with single pulse and train of pulses, A.C. and D.C. motors – construction and speed control. Switched Mode Power Supply (SMPS). Uninterrupted Power Supply (UPS).
Open-loop and closed-loop control system, Block Diagram reduction techniques, transfer function, and signal flow diagram, Stability criterion: Routh-Hurwitz and Nyquist plot, On-off controller, Proportional (P), Proportional-Integral (PI), Proportional-Derivative (PD), PID controllers
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