Ultimate Electrical Machines Course

 What's included?

• Importance and construction of DC machines
• Armature winding and emf equation
• Separately excited DC machine
• Shunt and series DC machines
• Types and applications of compound DC motors
• Torque-speed characteristics and speed control of separately excited DC motor
• Torque-speed characteristics of series DC motor
• Starting of DC machine
• Armature reaction in DC machines
• Losses in DC machines
• Dozens of solved examples on all types of DC machines
• Importance of the magnetic circuit and its application like transformer
• Difference between linear and non linear materials
•  Important definitions of magnetic circuits, flux linkage and reluctance
• Analogy between the magnetic and electric circuits , the similarity between them like resistance, reluctance, conductivity, permeability, emf, mmf, current, flux, magnetic flux density and current density
• Induced emf, fringing effect and ampere right hand rule or screw rule
• Importance of transformers and why it is considered as the backbone of the power system
• Construction of the transformer and its main components
• Iron core which is responsible for the magnetic flux action
• Magnetic circuit which is represented by the iron core
• Windings of transformer, types, categories and construction
• Insulating material between the windings and iron core + transformer oil and its great importance
• Conservator of transformer which contains oil and its function
• Breather which is used as filter in transformer
• Bushings which is important for human safety and protection from instant death
• Tap changer which is used to control the voltage according to the load variations
• Cooling tubes for transformer oil cooling and heat dissipation
• Buchholz relay in transformer for gas detection
• Explosion vents for protection of transformer in case of internal faults
• Different methods of cooling of transformer and their corresponding power rating
• Different types of transformers as power and distribution transformers
• Difference between single phase core and shell type transformers
• Difference between three phase core and shell type transformers
• Comparison between the shell type and core type transformers
• Theory of operation of transformer
• Effect of loading on transformer
• Transformer rating, regulation and efficiency
• Different losses occurring in transformer
• Approximate and exact equivalent circuits of the transformer
• Voltage relation in the transformer
• Ideal and non-ideal transformers and understand which one of them represents an actual real-life transformer
• Concept of referring in transformer
• Principle of operation of synchronous motor
• Construction and principle of operation of synchronous generator
• Equivalent circuit and phasor diagram of salient synchronous machine
• Equivalent circuit and phasor diagram of non-salient synchronous machine
• Parallel operation of two generators
• Synchronization of the machine with the grid
• Dozens of solved examples on synchronous machines salient and non-salient
• Construction and theory of operation of induction machines
• Equivalent circuit and power flow in the induction motor
• Torque-speed characteristics of induction motor
• Methods of speed control of induction motor
• Methods of starting induction motor
• Principle of operation of doubly fed induction generator
• Self-excited induction generator
• Dozens of solved examples on induction machines