50kW only? The description with that motor says A/C induction. The cost looks like a fairly complete package for home installation?

I would expect it to be down-rated from 50kW due to the 96V controller and, presumably, a few volts less from the battery (less than 96V at full charge?) as the motor presumably would only output rated power at maximum voltage?

Many simply use fork truck motors – have a look at Rich Rebuilds on the toob as he is currently converting a BMW Mini to electric. There are plenty of other videos around, but that one has an attractive ‘side-kick’ involved at times.🙂

Lower powered motors are sufficient for steady motoring, but not particularly startling (see some Morris Minor/VW beetle conversion videos?). Run through the vehicle’s transmission does give the opportunity to select a more appropriate gear ratio, depending on the circumstances🙂 .

Back in the 1990s when I was working full time on designing the power electronics for electric vehicles we started with simple induction motors (up to 100kW) and full vector control, ie, a VFD. One thing an electric vehicle needs is full torque at zero speed which makes the controller a bit more upmarket than VFDs intended for machine tools. We then modified the software to deal with trapezoidal motors aka brushless DC. We then did another tweak for permanent magnet motors, similar to BLDC motors. We used off the shelf commercial motors, which were large. Now motors are much better tuned to the application. Like IC engines electric motors in cars rarely run at full power for any significant period of time, so the motors can be small compared to full rated motors. We used a single motor per vehicle, apart from buses where we needed two motors gearbox coupled to get the power. These days each wheel tends to have it's own motor which can be smaller and dispenses with the need for gearboxes and differentials.

We did a project with Oxford University with a weird kind of induction motor that had 10 poles and 12 windings, or the other way round, can't remember which. I never did get to the bottom of understanding how it worked.

I think modern vehicles use a mix of induction and BLDC. If anything the battery management system is more important. One thing we discovered early on is that one needs to monitor each cell and use a charge balancing algorithm. Otherwise the batteries get out of kilter and one ends up overcharging or over-discharging individual batteries.

Electric gliders mostly use BLDC for self-sustainers but the only self-launching glider we have at our site uses an induction motor (I think).

Andrew

Edited By Andrew Johnston on 28/11/2020 14:47:14

some state of art electric motors from Slovenia.

Link opens a PDF document

Emrax

Edited By Niels Abildgaard on 28/11/2020 15:36:49

Saw a picture, only the other day of a company that converts original Minis from petrol ,power to electric drive.

It looked to be a fairly small package.

No mention of where the battery pack goes, or of the power available.

For only £7,000!

The waiting list may well be fairly short!

Hope that it wasn't like an attempt to power a Hillman Imp with Hydrogen. The cylinder took half the back seat and the passenger seat!

Howard