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Language of Instruction
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English
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Level of Course Unit
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Doctorate's Degree
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Department / Program
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ELECTRICAL AND COMPUTER ENGINEERING
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Type of Program
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Formal Education
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Type of Course Unit
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Elective
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Course Delivery Method
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Face To Face
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Objectives of the Course
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This course aims to teach students the following topics: development of AC machine models, complex variable analysis of asynchronous and synchronous machines, numerical simulation of electrical machines and drives, dq models and current regulation of power converters, field-oriented (vector) control of AC machines, and direct torque control.
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Course Content
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1. AC machine model development,
2. Complex variable analysis of induction and synchronous machines,
3. Digital simulation of electric machines and drives,
4. DQ models for power converters and current regulation,
5. Field oriented (vector) control of AC machines,
6. Direct torque control,
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Course Methods and Techniques
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Catalog
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Prerequisites and co-requisities
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None
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Course Coordinator
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Asist Prof.Dr. BURAK TEKGÜN burak.tekgun@agu.edu.tr
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Name of Lecturers
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None
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Assistants
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None
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Work Placement(s)
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No
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Recommended or Required Reading
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Resources
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Coupled circuit analysis of AC machines, calculation of inductances and winding functions. (LO1)
Introduction to electrical radian notation, three phase idealized machine model, vector notation, voltage equations for 3 phase sinusoidal machine (LO1)
Voltage equations referred to the stator and rotor side ant their graphical interpretations. Two phase model of 3 phase sinusoidal machine. (LO2)
Quadrature and direct axis definition, transformations and inverse transformations, matrix notations, rotation transformation, machine equations in arbitrary reference frame, power equations for complex vectors. (LO2)
Electromechanical energy conversion, torque expressions, mechanical system equations, salient pole (wound field) synchronous machine. (LO1, LO2)
Steady state solutions using complex instantaneous variables, steady state torque equations. (LO1, LO2)
Constant speed transients, forced and natural solutions, current source and voltage source excitations. (LO2, LO4)
Trapped flux equivalent circuit, transient analysis of AC machines in state variable form (LO2, LO3)
Per unit system, magnetic saturation and introduction to system simulation, dq converter modeling (VSI) (LO2, LO3)
Inverter modeling (CSI), inverter – machine (VSI) model, inverter – machine (CSI) model, current regulation on AC machines, PWM-VSI current regulations, hysteresis current regulation. (LO3)
Ramp comparison current regulator, stationary frame dq current regulator, synchronous frame dq current regulator, space vector modulation, torque control in AC machines, steady state field oriented control (FOC) equations, indirect and direct FOC. (LO4)
Torque production and voltage equations in FOC induction machines. Differences between the FOC in IM and SM (wound field), detuning effects if indirect FOC and its dynamics (LO4)
FOC using air gap flux, field weakening in IM for FOC (LO4)
Interactions of current and voltage limits, synchronous reluctance machines, Interior permanent magnet (IPM) machines constant power operation of IPM machines.
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Course Notes
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Vector Control and Dynamics of AC Drives,“ D. W. Novotny, T. A. Lipo, 1996, Oxford – Clarendon Press
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Course Category
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Mathematics and Basic Sciences
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%20
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Engineering Design
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%80
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