liveforphysics wrote:If you get a flux vectoring controller, THEN and only then does it make any sense to be sensorless.
Are these available now (or soon will be) for most ebike level applications? Motor limitations? Cost? Sourcing?
I think Maxwell could probably offer some motors with halls too? Of course, not everyone will demand the higher performance of a sensored motor if the sensorless has some simplicity enhancements such as lower failure rates vs sensored & less repair issues. In other words "failure prevention" by not having halls & wiring to fail in the first place.
Perhaps sensorless has a lot of room for future improvements too to somehow smooth out the jerky & start-up issues in future upgrades too? Are these sensorless controllers upgradeable?
But! Maxwell says this already about this sensorless controller: i finally mounted a HS sensor-less motor and a clyte 48v45amp controller,,,and it runs smooth as silk and is fast as well
(its raining today so in a few days i will post my top speed,,,,but it seems to be faster than my 5303 and this controller is 45amps where as my other controller was 35amps,,,so I'm sure the 10 amps is giving me the extra speed im sensing... i have heard reports that even at the same amps the new HS is faster) and to top it all off, good torque,,,, as far as I'm concerned there is no reason whatsoever to go with sensored unless of course you don't want to change controllers and use a regular sensored controller with the 5 hall effects wires,,,,but for those on the fence you will not be sorry with the sensor-less set-up,,,im really impressed with how smooth the starts are,,,,unable to tell a difference between sensored and sensorless
Here are some valid or "funny" reasons to go sensorless that Lyen uses to promote his controller:
(I realize 3 & 7 don't apply to xlyte.)
1. You want to make more space in the motor axle for for thicker phase wires
2. You hate hall wires
3. You have a RC motor (Turnigy & Astro in this case)
4. You want to try something different
5. You think sensorless is cool
6. You are unable to figure out how to wire the sensor wires to the controller with the correct sequence
7. You want to have a backup controller just in case
8. You think sensorless is more reliable since no hall sensors and/or wires can get damaged easily by heat & water