sounds great....
as smart as your friend is... consider an off-the-shelf controller FIRST, and see if you can match functionality.
100 mile range very doable, 150 starts getting a little ambitious... unless you have lots of cash and REALLY need the range.
another big disconnect in your specs are that you are only going to get braking regen with AC motor and controller... which drives the price way up with minimal (maybe 10%) increase in range. go simple, go DC, and forget regen for your first project....
as smart as your friend is... consider an off-the-shelf controller FIRST, and see if you can match functionality.
100 mile range very doable, 150 starts getting a little ambitious... unless you have lots of cash and REALLY need the range.
another big disconnect in your specs are that you are only going to get braking regen with AC motor and controller... which drives the price way up with minimal (maybe 10%) increase in range. go simple, go DC, and forget regen for your first project....