![]() ![]() ![]() "Design of Brushless Permanent-Magnet Motors" by J.R. The only textbook I've found dedicated to the design of axial flux PM motors is Jacek Gieras's book on 'Axial Flux Permanent Magnet Brushless Machines', but this seems only to mention examples of coils: poles ratios (e.g., 12 stator coils and 8 rotor poles, 9/8, etc.). ![]() Many in the amateur wind turbine community seem to use a 4:3 ratio (magnets:coils), but I can't seem to find anything 'official' on the topic.Īn equal number of magnets: coils would cause problems with starting the motor and with cogging/torque pulsations. I'm interested to know the thoughts of group members regarding design rules/rules of thumb relating to the number of stator coils and rotor poles. I am currently investigating the design of a three phase axial flux PM motor, but replacing conventional materials with high temperature superconductors. ![]()
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