P.M synchronous generator design analytical method

Often P.M. synchronous generator designer finds some difficulties in matching the different quantities that conform the machine design; load requirements (V, i and cosφ), machine sizing, proper election of electrical circuit parameters and amount of permanent magnets on the excitation system. In addition to that, appears the difficulty of taking into account the effect of saturation. In the specialized literature can be found many methods in order to obtain a good compromise between the mentioned quantities, however they implicate approximate solutions and, in many cases, in despite of other indexes or parameters. The proposed "Analytical Method" overcomes these design problems starting from the two fundamental physical laws: Ampèrè s theorem and power balance. Also it is important to have an insight of the heat transfer and heat evacuation system, in order to determine the machine sizing. Optimization was carried out for maximal efficiency.