I
Isaac Wingfield
- Jan 1, 1970
- 0
I'm running a three-phase stepper from a 12 volt battery, and I need the
highest possible efficiency. The battery needs to last as long as
possible.
I'm using 100 Volt Vceo drivers, but I still need stopper diodes to
control the transients. I've put a 100 ohm resistor in series with the
diodes, which allows about a 50-60 volt turn-off transient -- as much as
I feel comfortable with.
The 100 ohm resistor ( which dissipates energy from all three windings,
via the three diodes), still runs quite hot, so there's an unfortunate
loss of efficiency there.
What kind of tricks can I pull to recover the transient energy that
shows up when the drivers switch off (that is, the energy that heats the
resistor)? Is there something I can do with a transformer, that would
recover the energy and let me re-use it?
thanks, Isaac
highest possible efficiency. The battery needs to last as long as
possible.
I'm using 100 Volt Vceo drivers, but I still need stopper diodes to
control the transients. I've put a 100 ohm resistor in series with the
diodes, which allows about a 50-60 volt turn-off transient -- as much as
I feel comfortable with.
The 100 ohm resistor ( which dissipates energy from all three windings,
via the three diodes), still runs quite hot, so there's an unfortunate
loss of efficiency there.
What kind of tricks can I pull to recover the transient energy that
shows up when the drivers switch off (that is, the energy that heats the
resistor)? Is there something I can do with a transformer, that would
recover the energy and let me re-use it?
thanks, Isaac
