The course aims to complete the notions of electrical machines learned in the basic course, where the topic was developed from a perspective of operational knowledge for the actual use of machines in a mainly industrial environment. In this course the operating principles of an electrical machine are considered, starting from the definition and calculation of the electrical inductances for structures in relative motion; definition of the electrical and mechanical equations in different reference systems; methodology for the generalized study of the different types of electric machines. Furthermore, upon completion of the previous courses, the operation of the synchronous machine at steady state is described in detail, both as an alternator and as a motor.
Course Prerequisites
Electrical circuits. Basic knowledge of electrical machines.
Teaching Methods
Lectures: 45 hours per year in the classroom
Assessment Methods
The exam consists of an oral test covering the topics discussed in the course, including those addressed during the exercises. During the oral interview, students will be asked to discuss key course contents and may be required to comment on or develop some of the exercises covered. The final grade will be based on the overall outcome of the oral exam.
Texts
Lecture notes provided by the Professor.
Contents
Inductances - General method of calculating the inductances of electrical machines with moving parts. Magnetic fields - Spatial and temporal distribution of magnetic fields in rotating machines ibased on simplified hypotheses. Electromagnetic torque - Methods of calculating the electromagnetic torque in rotating electrical machines. Equations of electrical machines Transformations. Equations of elementary rotating machines with one and more electrical windings. Transformations of equations in different reference systems. Reference electrical machine Generalized electrical reference machine (general equations and torque calculation) The synchronous machine - General equations. - Steady state operation as alternator and motor Addenda on the induction machine General equations on the reference d-q frame.
