ABSTRACT
An electromechanical energy conversion is a conversion of mechanical energy into electrical energy or vice versa with the aid of rotary motion or translatory motion. Electrical machines, solenoid actuators and electromagnets are generally called electromechanical energy conversion devices. Transformers and solid-state converters belong to the group of electromechanical energy conversion devices because they only convert one kind of electrical energy into another kind of electrical energy with different parameters without any motion. The momentum is the basic coordinate of the mass in translatory motion, because the momentum is a measure of the energy stored by an element of mass. Coenergy is an auxiliary function necessary for calculations of the force or torque at constant current. In the linear case, energy and coenergy are numerically equal. Electrical machines, solenoid actuators and electromagnets are generally called electromechanical energy conversion devices.
