Good to hear
First of all I would like to say that the Excel tool is great. However, I am in the process of designing an axial flux PM generator to be driven by my beta stirling engine. I usually do a litrature study before I start building stuff. In this process I usually write a design tool to make designing and checking of the data more easy and also to learn about the subject.
My starting point is an article I've found on the internet:
Axial Flux Permanent Magnet Generator Design for Low Cost Manufacturing of Small Wind Turbines by
K.C. Latoufis, G.M. Messinis, P.C. Kotsampopoulos and N.D. Hatziargyriou.
This article describes the calculations pretty good!
For the tool I will also include the use of a turbine. This because I would like to contribute to the community.
I also think that the output source should be configurable (inverter, battery, etc..). The problem is that I just started on this subject an will need input of the community!
Anyway I will make a new forum post for the designer with a link to the executable, github repositry and documentation.
I this way the community can discuss the program and calculations and propose changes.