Magnetic field theory, three phase systems. Hazards of electrical power. General structure of electrical machines: transformers, DC machines, induction machines, synchronous machines, mathematical model, stationary analysis and stationary operating characteristics. System components of electronically controlled motor drives. Physical basis of electromechanical energy conversion. Power Electronics, converters and semiconductor components. Grid commutated converters. DC converters. Inverters. New energy sources such as: batteries, solar panels, fuel cells, analog and digital signal processing in power electronics control circuits. Energy Conversion in electrical machines. The combination of motor and power electronics.