HighVoltage
Apr 23, 2004, 04:41 PM
I have this ideal for electric helis and I wonder if anyone has tried it.
With regard to brushless motors, has anyone seen a DIY controller built like this ? (see below)
The function of the controller is to break up a full DC source into a stepped sine wave. Currently one battery pack used at full voltage is used to supply this gizmo with power.
But the power is already divided in the batteries. If you arrange a pack as 1 cell for the lower level DC voltages required to generate the stepped DC & 4 cells for the higher voltage. With these supplies available all you need is some gates and some FFT's to produce a single sine at the output.
The three phase workup of this may require 2 or maybe even 3 sources. A CD ROM motor could be made to work in single phase if it can be re wired.
I'm curious if anyone has any comments about this idea or know if its been tried or would want to build the circuit that you or I design to test it. It is too difficult to build a board and do electronic testing in my apt. My place cannot make room for any more new stuff- particularly since the heli.
With regard to brushless motors, has anyone seen a DIY controller built like this ? (see below)
The function of the controller is to break up a full DC source into a stepped sine wave. Currently one battery pack used at full voltage is used to supply this gizmo with power.
But the power is already divided in the batteries. If you arrange a pack as 1 cell for the lower level DC voltages required to generate the stepped DC & 4 cells for the higher voltage. With these supplies available all you need is some gates and some FFT's to produce a single sine at the output.
The three phase workup of this may require 2 or maybe even 3 sources. A CD ROM motor could be made to work in single phase if it can be re wired.
I'm curious if anyone has any comments about this idea or know if its been tried or would want to build the circuit that you or I design to test it. It is too difficult to build a board and do electronic testing in my apt. My place cannot make room for any more new stuff- particularly since the heli.