Course detail
AC Drives
FEKT-MSPOAcad. year: 2017/2018
Controlled drives with an induction motor: frequency response of a controlled induction motor, static characteristics of a scalar and vector control, synthesis of a speed control loop. Controlled drives with a synchronous motor, sratic characteristics of a vector control, structures of controlled circuits, supply of motors from a voltage or current source. Subsynchronous and oversynchronous cascade, static characteristics, synthesis of controllers.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Learning outcomes of the course unit
- describe and explain way and condition of variables description using space vectors in AC electric machines
- explain Clark and Park transform and their meaning. To define significant coordination frames
- explain how power and torque is computed using space vectors
- describe and explain induction machine dynamic model and its transformation in to various coordinate systems
- describe and explain synchronous machine model. Modify it for various variants of synchronous machine.
- describe and explain common method of scalar control of induction machine
- describe and explain common method of field oriented control of induction machine
- describe and explain common method of field oriented control of synchronous machine
- describe three-phase transistor inverter model. Define its inputs and outputs gain and transfer function.
In laboratory exercises is validated to:
- realize dynamic models of AC machines
- realize dynamic models of control methods of ac machines
- determine transfer functions of controlled systems for particular control methods
Prerequisites
- apply Laplace transform
- apply complex numbers
- apply principles of integral and derivation computation
- explain physical and electrical principles related to electromechanical energy transformation
- apply continuous control theory
- realize models in MATLAB – SIMULINK environment
Co-requisites
Planned learning activities and teaching methods
Assesment methods and criteria linked to learning outcomes
Course curriculum
Three-phase machines dynamic models fundamentals, parameters of models
Asynchronous machine model
Synchronous machines model
Threephase transistor inverter model, Methods of PWM
Scalar control methods of induction drive
Field oriented control methods of induction drive
Direct torque control of induction drive
Field oriented control methods of synchronous drive
Sensorless control introduction
Induction machine applications with feeding into rotor
Work placements
Aims
Specification of controlled education, way of implementation and compensation for absences
Recommended optional programme components
Prerequisites and corequisites
Basic literature
Caha, Černý: Elektrické pohony, SNTL (CS)
Leonhard: Control of Electrical Drives, Springer (EN)
Šubrt J.; Střídavé regulační pohony II (CS)
Recommended reading
Classification of course in study plans
Type of course unit
Lecture
Teacher / Lecturer
Syllabus
Common theory of an electric machine
Static properties of a controlled induction machine
Static properties of a controlled induction machine
Static properties of a controlled synchronous machine
Static properties of a controlled synchronous machine
Double fed induction machine
Electric synchronous tie
Electric synchronous tie
Analysis and synthesis of asynchronous controlled drives
Analysis and synthesis of asynchronous controlled drives
Analysis and synthesis of synchronous controlled drives
Analysis and synthesis of synchronous controlled drives
Exercise in computer lab
Teacher / Lecturer
Syllabus
Space vector and its transformation
Common model of an induction machine
Common model of an induction machine
Common model of a synchronous machine
Common model of a synchronous machine
Frequency analysis of controlled machines
Synthesis of controllers and simulation of controlled drives with induction motors
Synthesis of controllers and simulation of controlled drives with induction motors
Synthesis of controllers and simulation of controlled drives with synchronous motors
Synthesis of controllers and simulation of controlled drives with synchronous motors
Course - credit