8 Forces in Electrodynamic Systems
8.1 Principles of Calculation of Forces Acting on Buses and Windings of Transformers
The force dF of the magnetic field of flux density B, acting on an element dl of a conductor carrying the current I, according to Ampere’s law, is expressed by the vector product
The electromagnetic force acting on a body of volume V, in which flows the electric current of density J = σE, is expressed by Ampere’s law
where for an alternating field, Em = Em ejω t, Bm = Bm ejω t, the force components are
The most popular, four basic methods of calculating electrodynamic ...