JackB
10 W
Ok, gotta ask this question..I'm building a wheel/hub bldc motor and was thinking can I make a controller that simple cycles through three coils? So instead of delta or star, it is star with a permanent ground at the star. Thus, turn on power to A, then B, then C, then back to A. Now I understand this would power only 1 coil vs 2 coils (or 3 coils like Prius inverter), however, the resistance is half as much so it should make more current/force in the single coil. The big thing is it only needs 3 high side switches vs 6 to switch high and ground for each coil. OK, so tell me why this is dumb...
And while I've got your attention, I'm also thinking of another dumb idea of segmenting my wheel coils into 2 or 3 or 4 groups and have a seperate driver for each one. Then I can use lower power switches rather than 4x more current in a single switch.
Of course I know it would be better to parallel 4 together in one controller, but I have 4 low power controllers so we are not talking about an OEM design, but repurposing existing parts.
Thanks for any insight into my dumb ideas.
Jack
And while I've got your attention, I'm also thinking of another dumb idea of segmenting my wheel coils into 2 or 3 or 4 groups and have a seperate driver for each one. Then I can use lower power switches rather than 4x more current in a single switch.
Of course I know it would be better to parallel 4 together in one controller, but I have 4 low power controllers so we are not talking about an OEM design, but repurposing existing parts.
Thanks for any insight into my dumb ideas.
Jack