Re: [CAD_CAM_EDM_DRO] Re: Rotor inertia.

kimvellore wrote:

>Mariss,
> My 2C on this subject. The heat generated in a inductor is due to
>the resistance or due to eddie current. For the low-inertia both
>would be small, hence the heat generated due to the increased current
>should in theory be less then in regular motors... what do you think?
>
>
>

But, the ripple current goes up as the inductance goes down, as the Gecko
drives put a 25 KHz square wave of full DC power supply voltage across
the motor. I used a 2-pole filter in my servo amps for a variety of
reasons.
It reduces EMI emissions, it saves the motor from the ripple current, and
it allows short circuit currents to rise slowly enough that the fault logic
can turn the amp off before anything blows up.

Jon