| Lectures and exercises |
hours |
| Topics |
Specific contents |
|
| Introduction to electric drives |
Definitions, functional block diagrams. Type of electric motors: dc and ac. Operating regions. Dissipative and regenerative braking. Choice of the motor for a certain application. |
4
|
| Power converters for electric drives |
Topologies, features and advantages. Electronic power components. Converters: ac-dc, dc-dc, dc-ac (voltage source three-phase inverters) |
6
|
| Control system for an electric drive |
Historical backgrounds. Evolution from analog to digital control systems.Hardware/software and ASIC/μP/μC duality. DSP and FPGA based real-time control systems. Analysis of advantages and disadvantages, choice of the type of control system. |
2
|
| Electromechanical energy conversion |
Principles for electromechanical energy conversion, energy balance. Energy conversion topologies: reluctance, electrodynamical and induction. |
4
|
| Dynamics of motor-load system |
Block diagrams and transfer function of the mechanical subsystem. Typical trajectories adopted in motion control. Types of loads: active and passive load torques. Calculation of equivalent moments of inertia for common mechanical systems. |
6
|
| DC motor drives |
Structure, basic block diagram, building diagrams, dynamical model, torque equation and mechanical characteristics of a dc motor. Position, speed and current control. DC motor drives fundamentals and schemes. |
8
|
| Exercises for DC motor drives |
Exercises on dc motors and drives. Design of the speed controller for a dc motor drive: current and speed control loops. |
6
|
| Simulation and implementation of controllers |
Design of a (digital) controller for dc motor drives: timing and real-time constraints. Simulation by means of Matlab/Simulink. Analysis of datasheets of commercial dc motors and drives. |
4
|
| Stepper motor drives |
Operating principles of stepper motors: variable reluctance, permanent magnet and hybrid. Torque production. Feeding schemes. Parameters and characteristics of stepper motors. |
4
|
| Use and exercises for stepper motors |
Design of a stepper motor drive (choice of the motor). Design of acceleration trajectories. Demo structures of actual motors. Analysis of datasheets of commercial stepper motors and drives. |
4
|
| Permanent magnet synchronous motor drives |
Structure and principle of operation of permanent magnet synchronous motors (PMSMs). Analysis in sinusoidal feeding conditions. Control strategies. Demo structures of actual motors. Analysis of datasheets of commercial PMSM motors and drives. |
4
|
| Three-phase induction motor drives |
Structure and principle of operation of three-phase induction motors. Analysis in sinusoidal feeding conditions. Open- and closed-loop scalar control (V/Hz). Field-oriented control basics. Analysis of datasheets of commercial induction motors and drives. |
4
|
| Total hours for lectures and exercises |
56 |
| for exercises only |
12 |
|
Further educational activities
|
hours
|
| Labs |
0 |
| Tutorials / Seminars |
0 |
| Workshops |
0 |
| Guided tours |
0 |
| |
0 |
| Total hours for further educational activities |
0 |
| Total hours |
56
|