Thermal analysis of the permanent magnet synchronous generator with the use of Ansys Fluent

Construction and thermal analysis of the 2 KW generator designed for small wind power station with vertical axis of rotation was presented in this article. The analysis is required in order to determine temperature distribution inside the machine to avoid magnets demagnetization and isolation damage. The presented thermal analysis of synchronous generator prototype was made using computer fluid mechanics in Ansys Fluent calculation system, based on losses at the machine components determined using Ansys Maxwell calculation system. The analysis was made for three variant of air flow speed around the generator frame. The lowest speed corresponds to the conditions of air flow during the study at the test stand, while higher speeds simulate the normal generator operation. The magnetostatic analysis of the field-circuit generator model was made using computational magnetostatic solver.