Unit - 1 Introduction Basic elements - Types of electrίc drίΊ7es - Factors ίnfluencίng the choίce of electrical drίΊ7es- Heatίng and cooling curΊ7es - ιoadίng condίtίons and classes of duty - Selectίon of power ratίng for drive motors with re!ϊ!ard to thermal overloadin!ϊ! and Ioad varίatίon factors. (Chapter - ι) Unit - 11 Drive Motor Characteristics Mechanical characteristics Speed Torque characteristics of various types of Ioad and drίve motors - Brakίn!J of electrίcal motors - D.C. motors: Shunt. serίes and compound -Sin!ϊ!Ie phase and three phase induction motors. (Chapter 2) Unit - 111 Starting Methods Types of d.c motor starters Typical control circuίts for shunt and series motors Three phase squirrel cage and slip ring induction motors. (Chapter - 3) Unit - IV Conventional and Solid State Speed Control of D.C. Drives Speed control of d.c. series and shunt motors Armature and field control. Ward-Leonard control systeιη - llsing controlled rectίfίers and d.c. choppers -Applίcations. (Chapters- 4. s) Unit - V Conventional and Solid State Speed Control of A.C. Drives Speed control of three phase induction motor Voltage control. Voltage / frequency controI, Slip power recovery scheme Using inverters and a.c. voltage regulators Applications. (Chapters - 6. 7 )
