The course gives a brief overview of basic types of electric drives. It deals with drives with DC, asynchronous, synchronous and special motors including power electronic converters.Another topics include control strategies such as scalar, vector, direct, sensorless control of AC drives, pulse width modulation strategies and various load types. It is focused on understanding the physical nature of a given type of drive, general derivation of basic differential equations describing transient and steady states, and creating corresponding mathematical models of analyzed systems suitable for both off-line simulation and online-adapted dynamic and real-time control using the basis of modern microprocessor technology. Problems of operating states, sensors and diagnostics of electric drives are also discussed. Basic knowledge of mathematics, mechanics, kinematics, dynamics, theory of electromagnetic field, circuit theory and control theory are assumed.
1. Electric drive and its components.
2. Transient states in electric drive, Lagrange equations, types of load.
3. Fundamentals of general electric machine theory.
4. Specification of general electrical machine theory for DC machines.
5. Transient states in DC machine, control methods.
6. Coordinate systems for mathematical description of AC electric machines and their mutual transformation.
7. Specification of general electrical machine theory for induction machines.
8. Transient states in asynchronous machine, control methods (scalar, vector, direct).
9. Specification of general electrical machine theory for synchronous machines.
10. Transient states in synchronous machine, control methods.
11. DC power converters and their mathematical models.
12. AC power converters and their mathematical models, pulse width modulation strategies.
13. Special types of motors for controlled drives.
14. Diagnostics, sensors and working states of electric drives.
1. Inspection of the Electrical Machines Testing Laboratory at CTU-FEL - Labor Safety in Laboratories
2. Start of DC motor and measurement of its parameters
3. Model of DC motor in MatLab and its comparison with measurement
4. Measurement of induction motor by PXI system - determination of parameters of equivalent circuit
5. Measurement of induction motor start-up - determination of the torque equation of the drive
6. Speed control of indcution motor by frequency converter, harmonic analysis - oscilloscope Tek-THS3000
7. Measurement on DC - MAXON actuators - setting of current, speed and position regulator
8. STMicroelectronics NUCLEO - basic functions of control and measurement of feedback signals
9. NUCLEO - Stepper motor - control and movement over a specified trajectory
10. NUCLEO - DC Motor - PWM Speed Control
11. NUCLEO - BLDC motor - speed control
12. Individual work on given task - NUCLEO + motor
13. Individual work on given task - NUCLEO + motor
14. Control of individual work, credit
Leonhard, W.: Control of Electric Drives, 3rd ed., Springer, 2001.
Chiasson, J.: Modeling and High Performance Control of Electric Machines, Wiley-IEEE, 2005.