Electric drive – Equations governing motor load dynamics – steady state stability – multi quadrant Dynamics: acceleration, deceleration, starting & stopping – typical load torque characteristics – Selection of motor
Steady state analysis of the single and three phase converter fed separately excited DC motor drive–continuous and discontinuous conduction– Time ratio and current limit control – 4 quadrant operation of converter / chopper fed drive
Stator voltage control–energy efficient drive–v/f control–constant airgap flux–field weakening mode– voltage / current fed inverter – closed loop control
V/f control and self control of synchronous motor: Margin angle control and power factor control – permanent magnet synchronous motor
Transfer function for DC motor / load and converter – closed loop control with Current and speed feedback–armature voltage control and field weakening mode – Design of controllers; current controller and speed controller- converter selection and characteristics
Reference Book:
1. Gopal K.Dubey, Fundamentals of Electrical Drives, Narosa Publishing House, 1992. 2. Bimal K.Bose. Modern Power Electronics and AC Drives, Pearson Education, 2002. 3. R.Krishnan, Electric Motor & Drives: Modeling, Analysis and Control, Prentice Hall of India, 2001.
Text Book:
1. John Hindmarsh and Alasdain Renfrew, ―Electrical Machines and Drives System,‖ Elsevier 2012. 2. Shaahin Felizadeh, ―Electric Machines and Drives‖, CRC Press(Taylor and Francis Group), 2013. 3. S.K.Pillai, A First course on Electrical Drives, Wiley Eastern Limited, 1993. 4. S. Sivanagaraju, M. Balasubba Reddy, A. Mallikarjuna Prasad ―Power semiconductor drives‖ PHI, 5th printing, 2013. 5. N.K.De., P.K.SEN‖Electric drives‖ PHI, 2012. Vedam Subramanyam, ‖Thyristor Control of Electric Drives‖, Tata McGraw Hill, 2007