Calculations of the Magnetic Fields of the End Zone of the Asynchronized Synchronous Generator (Asg) by the Scalar Potential Method

An approach to calculating a three-dimensional magnetic field by reducing it to the potential field of sources (magnetic charges) is considered. Variants of the quasipotential model of the magnetic field are shown, containing volume, surface charges, and also double layers of charges that replace real currents. The solution of the problem of calculating the magnetic field is carried out by a variation method using the finite element method. A three-dimensional quasipotential model of the end zone of the ASG generator has been compiled. The universal algorithm for calculating the stationary magnetic field developed on the basis of the considered method is applied to solve the practical problem of calculating the field in the end zone of the ASG generator and the leakage inductance of the frontal parts of the rotor windings. Based on the calculation results, recommendations were made to take into account the final dimensions of the winding section.