With effect from the academic year 2008-2009 EE 502

MACHINE MODELLING AND ANALYSIS (Elective)

Instruction : 3 periods per week Duration of University Examination : 3 hours University Examination : 80 Marks Sessional : 20 Marks UNIT – I: Theory of Transformation: Reference Frames – Electrical Network Terminology – Mesh Network – The Generalized Machine of the First kind – Impedance Matrix – Impedance Matrix of the Synchronous Machine – The Flux Linkage and the Flux Density Matrices – Rotation Matrix – Electro-magnetic Torque – Performance Calculations – Elimination of axes – Analysis using Revolving Field Theory – Transformation from the stationary d-q Axes to stationary Real axes reference frame. UNIT – II: Performance and Analysis of A.C. and D.C. Commutator Machines: Compound Wound D.C. Motor – Steady State Analysis – D.C. Shunt Motor – D.C. Series Motor – Transient Analysis – Stability of a Compound Wound D.C. Motor – Universal Motor – Separately Excited D.C. Generator – The Repulsion Motor – Steady State Performance – Stability of a Repulsion Motor. UNIT – III: Electrical Machines in Rotating Reference Frames: Nonholonomic Reference Frame – Equation of voltage along the General rotating axes – Torque and inductance Matrix in Nonholonomic Reference Frame – Holonomic Reference Frame – Equation of voltage in Holonomic Reference Frame – Impedance Matrix of the Second Generalized Machine from the First Generalized Machine – Equation of Voltage of the First Generalized Machine from that of the Second – Equation of Torque for the First Generalized Machine from the Second one – Induction Machine in the Quasi – Holonomic Reference Frame. Synchronous Generator in Quasi-holonomic – Reference frame. UNIT – IV: Performance Analysis of Induction and Synchronous Machines: Two-phase Symmetrical Components – Torque in a Two-phase Induction Machine – Three-phase Induction Motor – Sequence Impedance of an Induction Motor – Two-phase Induction Motor on Holonomic Reference Frame – Three-phase Induction Motor on Holonomic Reference Frame – Power in the Synchronous Machine – Elimination of the Field and Damper Windings – Torque in a salient pole Synchronous Machine – Determination of the d- and q-axes reactances – Synchronous Generator Under Sudden Short Circuit – Generator without Damper and Resistance – Generator without Damper but with Field Resistance – Generator with Damper Windings. UNIT – V: State Modeling of Electrical Machines: Voltage and Torque Equation under acceleration – Motional Impedance Matrix of the Generalized Machine – State Model of the Generalized Machine – D.C. Machine under Acceleration – State Model of the Induction Motor – State Model of the Synchronous Motor. Suggested Reading: 1. Mukhopadhyay A.K., Matrix Analysis of Electrical Machines, New Age International. 2. Bimbhra P.S., Generalized Theory of Electrical Machines, Khanna Publishers, 1975. 3. Jones C.V., Unified Theory of Electrical Machines, Butterworths (London) 1967.