13 - Curriculum Development Centre, Kalamassery

UNIT - IIConverters and inverters in Industrial ApplicationsDC chopper circuits: - Principles of operation - control of chopping periods – variable frequency control –constant frequency control – cyclo converter – principle of operation with wave formsInverters: - Requirements of practical inverters - single phase series inverter – parallel inverters - threephase inverter – circuit and their operationsUNIT - IIISpeed control of machinesDC motor control: - Series motor – speed control using diac and SCR – chopper control- wave form -shunt motor - Armature voltage control using SCR and diacInduction motor control:- methods of speed control of A.C induction motors- Stator voltage control-Speed control by starter voltage control methods-variable voltage frequency control method-speed controlof slip inductor motor by chopper control (Rotor on – off control)UNIT - IVControl systemsLaplace transforms-first and second order.–Basic control system – open loop closed loop systems servo mechanism – positioning servo systemusing synchros – synchronous control system for remote application - phase locked loop (PLL) - controlof a DC motor – applicationsUNIT - VRegulated Power SuppliesRegulation – simple regulator circuit using zener – regulators using 78 xx and 79 xx IC’s – Series voltage– shunt voltage regulators – op amp regulator LM 317 – A.C voltage stabilizer – step type and servostabilizer for a.c – switching mode power supply – UPS – Integrated circuit power supply – Timer- basicprinciple - working of 555 timerREFERENCE1. Industrial electronics and control - Biswanath Paul2. Industrial electronics - G.K Mithal3. Power Electronics - Bimbra4. Power Electronics - Hari babu125