Syllabus

Study of magnetization characteristics and the voltage build-up process for self-excited induction generator, determination of magnetization curve and magnetic hysteresis loop for a given transformer, determine the moment of inertia J, inductance L and resistance R of a given DC machine, determine the vector group of the three-phase transformer, measurement of sequence impedance of an alternator, obtain two phase equivalent currents and voltages for a given three phase system and obtain average active and reactive powers, instantaneous active and reactive powers, develop a dynamic model for a single phase transformer and simulate its behavior for R and RL loads, obtain steady-state torque versus speed characteristics of three phase induction motor with variable voltage, variable frequency, variable rotor circuit resistance and with V/f control.
List of Experiments
1. Determination of moment of inertia, inductance and resistance of a DC machine
2. Study of voltage build up process in self excited induction generator and magnetization characteristics
3. Determination of hysteresis loop and hysteresis loss for a transformer
4. Study of the vector groups of three phase transformers
5. Measurement of positive, negative and zero sequence impedances of an alternator
6. Synchronization of three phase alternator with grid
7. a. Simulations for 3-phase to stationary reference frame transformation and vice versa to obtain voltages, currents, active, reactive and instantaneous powers
b. Simulations for stationary to synchronous reference frame transformation and vice versa to obtain voltages, currents, active, reactive and instantaneous powers
8. To develop a dynamic model for a single phase transformer and simulation with R and R-L loads
9. Simulation of induction motor to plot torque vrs. speed characteristics for voltage control and rotor resistance control
10. Simulation of induction motor to plot torque vrs. speed characteristics for with V/f control

Understand voltage build up process in self excited induction generator

Determine hysteresis loss of transformer and vector groups of 3-phase transformers.

Determine positive, negative and zero sequence impedances of synchronous machine and synchronize an alternator with busbar

Transient simulation of transformer and steady-state simulation of 3-phase induction motor

At the end of the course, students will be able to operate three phase induction machine as generator in self excitation mode

At the end of the course, students will be able to determine hysteresis loss of transformer

At the end of the course, students will be able to find positive, negative and zero sequence impedances of synchronous machine

At the end of the course, students will be able to synchronize 3-phase alternator with grid

At the end of the course, students will be able to implement reference frame transformations through simulation in Simulink

At the end of the course, students will be able to simulate transformer and induction motor in Simulink

P. C. Krause, O. Wasynczuk and S. D. Sudhoff, Analysis of Electric Machinery and Drive Systems, Wiley India, New Delhi , Second Edition, 2004

C. M. Ong, Dynamic Simulations of Electric Machinery: Using Matlab/Simulink, Prentice-Hall, Indiana , 1997

M. B. Patil, V. Ramanarayanan, V. T. Ranganathan, Simulation of Power Electronic Circuits, Narosa Publishing House, New Delhi , 2009