Traditional and computer-aided methods for designing contactless synchronous machines

摘要

A combined use of traditional and computer-aided methods for calculating and carrying out a harmonic and finite-element analysis for designing and investigating contactless synchronous generators and motors is considered. The active zones and magnetic systems of contactless synchronous machines with electromagnetic excitation and permanent magnets are investigated. A harmonic analysis method for solving the Neiman problems for the magnetic fields of active zones with rare-earth permanent magnets and combined excitation is developed, which is based on vector magnet potential. The method enables a better accuracy of the traditional methods for calculating magnetic system to be obtained. A particular procedure for a finite-element analysis of magnetic systems is developed The finite-element analysis of magnetic systems and investigation of dynamic processes help improve the accuracy of the calculations carried out using traditional methods.