Rotating Magnetic Field

Rotating Magnetic Field: Rotating Magnetic Field - It was seen earlier that the sinusoidal current in any phase of an ac winding produces a pulsating mmf wave in space whose…

Continue Reading Rotating Magnetic Field

Armature Winding in DC Machine

Armature Winding in DC Machine: With reference to the single-coil elementary Armature Winding in DC Machine of Figs 5.13 and 5.14(a) which shows the B-wave of the machine relative to…

Continue Reading Armature Winding in DC Machine

2 Pole Elementary DC Machine

2 Pole Elementary DC Machine: Figure 5.13 shows a 2 Pole Elementary DC Machine with a single coil rotating armature. It may be seen that the field winding is stationary…

Continue Reading 2 Pole Elementary DC Machine

Synchronous Machine Working Principle

Synchronous Machine Working Principle: Figure 5.2 shows the simplified version of an ac Synchronous Machine Working Principle with a 2-pole field winding on the rotor and a single coil aa'…

Continue Reading Synchronous Machine Working Principle

Rotating Electrical Machines

Rotating Electrical Machines: We Know that electromechanical energy conversion takes place whenever a change in flux is associated with mechanical motion. Speed voltage is generated in a coil when there…

Continue Reading Rotating Electrical Machines

Dynamical Equations of Electromechanical Systems

Dynamical Equations of Electromechanical Systems: Dynamical Equations of Electromechanical Systems - Figure 4.19 shows an electromagnetic relay whose armature is loaded with spring K, damper B, mass M and a…

Continue Reading Dynamical Equations of Electromechanical Systems

Multiply Excited Magnetic Field System

Multiply Excited Magnetic Field System: Multiply Excited Magnetic Field System - Singly-excited devices discussed earlier, are generally employed for motion through a limited distance or rotation through a prescribed angle.…

Continue Reading Multiply Excited Magnetic Field System

Principle of Electromechanical Energy Conversion

Principle of Electromechanical Energy Conversion: Principle of Electromechanical Energy Conversion is a reversible process and Eqs (4.26) to (4.29) govern the production of mechanical force. In Fig. 4.4 if the…

Continue Reading Principle of Electromechanical Energy Conversion