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 armature is allowed to move on positive x direction under the influence of F_f, electrical energy is converted to mechanical form via the coupling field.

If instead the armature is moved in the negative x direction under the influence of external force, mechanical energy is converted to electrical form via the coupling field. This process is not restricted to translatory devices as illustrated but is equally applicable to rotatory devices.

Electrical and mechanical losses cause irreversible flow of energy out of a practical conversion device. The flow of energy in Electromechanical Energy in either direction along with irrecoverable energy losses is shown in Figs 4.8(a) and 4.8(b).