36V/48V 600W sensorless and brushless controller

[keywin]

because requirement for Endless-sphere's menber,so i make one 36V/48V 600W sensorless and brushless controller,i tested is perfect,following is the product detailed.
Rated power: 600w
maximal current: 28A
normal voltage:36~48v
maximal voltage:59.6v
under protection voltage:31v
sensorless elements:
in this controller installed a phase angle detect and coder module,the module detect the back emf from motor 3 phase input wires,module coder these signal to PLC,PLC accordding the signal output exchange phase signal.
i am sorry,my English can not make clear it to integrity.

 

[rkosiorek]

very interesting.

are you willing to share the schematic for your BEMF detector circuit? Or do you have plans on selling this?

rick

 

[keywin]

very interesting.

are you willing to share the schematic for your BEMF detector circuit? Or do you have plans on selling this?

rick

Hi,i am sorry,the schematic for BEMF detector circuit is tech secret for my manufacturer,i can not get it. of course , i will selling it and supply preferential price
to endless-sphere.com member,thank you.

 

[rkosiorek]

i'll look forward to see the price on ebay once you get some ready to ship.

rick

 

[keywin]

i'll look forward to see the price on ebay once you get some ready to ship.

rick

hi,rick,this product will not listing on ebay,i agree subscribe for endless-sphere member only,because the gain too low.

 

[Ypedal]

http://endless-sphere.com/forums/viewtopic.php?f=4&t=2014&st=0&sk=t&sd=a&start=60

Looks very similar !! :lol:

 

[fechter]

That is very cool.

Can the motor start from a complete stop, or do you need to get the motor turning first?

 

[keywin]

That is very cool.

Can the motor start from a complete stop, or do you need to get the motor turning first?

This question very good,when the motor's fettle is complete stop ,the controller will use confusion mode start the motor to acquire phase signal,but the current is very feebleness,you can not feeling the motor was started,

 

[Larry]

To my puny little Newbie brain, this controller sounds like it might be just the thing to get one of my Crystalyte 408 motors with broken hall sensors running again. What do you guys think. Worth taking a chance on? Does it sound like it might be more or less equivalent to the sensorless brushless controller that ebikes.ca website recommends for people who don't want to replace broken hall sensors?

(I know, I know. I should quit being a wimp and replace the broken sensors.)

 

[Lessss]

This would allow for more room to put better guage wires into the hub itself, or couple small tubes (in and out) for forced air cooling.

 

[Knuckles]

8/17/08: Correction! I just tested the module on a DD BLDC motor. It only spins in ONE DIRECTION! Switch two phase wires and it runs the other direction!

From DEAD STOP! Just takes off forward. If I spin the wheel backwards it stops it and WILL ONLY SPIN ONE WAY!
Happy Happy Joy Joy!

Man ... Testing is so important! This thing is awesome. So I just tested all six combinations ...
Controller wires are A, B C (arbitrary)
Motor wires are 1, 2, 3 (arbitrary)
Motor starts from dead stop.

RUNS FORWARD
A-1
B-2
C-3

RUNS FORWARD
A-2
B-3
C-1

RUNS FORWARD
A-3
B-1
C-2

RUNS BACKWARD
A-1
B-3
C-2

RUNS BACKWARD
A-2
B-1
C-3

RUNS BACKWARD
A-3
B-2
C-1

Right now The7 is saying "DUH!"

Next test is on geared motor with freewheel! I am sure it will work.

MAN. I am an IDIOT! IT RUNS THE GREARED MOTOR PERFECT!

 

[John in CR]

Knuckles,

Here's the real test. With it connected so that it runs forward from a dead stop, what happens if you spin in backwards a bit and hit the throttle. If it still takes off in forward, then you're home free.

John

 

[Knuckles]

Knuckles,

Here's the real test. With it connected so that it runs forward from a dead stop, what happens if you spin in backwards a bit and hit the throttle. If it still takes off in forward, then you're home free.

John

That's what I just wrote! Look above DUDE! MAN So Happy I did not ship you that motor! HA HA!

 

[The7]

How does it road test on ebike when compared with the sensor one?

 

[Knuckles]

Road TEST is next.

But no-load test is identical to sensors connected. Runs nice too! SMOOTH!

 

[John in CR]

...MAN So Happy I did not ship you that motor! HA HA!

Don't forget my rust discount!

John

 

[dirtdad]

Correction! I just tested the module on a DD BLDC motor. It only spins in ONE DIRECTION! Switch two phase wires and it runs the other direction!

Bob,

This things appears to rock. I have a 5304 motor with bad hall sensors. I hate fixing hall sensors. Is this a module you could wire into any controller?

 

[dirtdad]

because requirement for Endless-sphere's menber,so i make one 36V/48V 600W sensorless and brushless controller,i tested is perfect,following is the product detailed.
Rated power: 600w
maximal current: 28A
normal voltage:36~48v
maximal voltage:59.6v
under protection voltage:31v
sensorless elements:
in this controller installed a phase angle detect and coder module,the module detect the back emf from motor 3 phase input wires,module coder these signal to PLC,PLC accordding the signal output exchange phase signal.

Keywin

Will this module work with any controller?

 

[Knuckles]

YES YES and YES.

Apparently it eliminates the need for hall sensors.

Don't forget my rust discount!

btw ... that is special "protective" rust. IT COSTS EXTRA!

 

[docnjoj]

Since the R/c folks have been running sensorless, its about time someone developed a controller for us regular motor folks! Congratulations!
otherDoc

 

[John in CR]

YES YES and YES.

Apparently it eliminates the need for hall sensors.

Don't forget my rust discount!

btw ... that is special "protective" rust. IT COSTS EXTRA!

Next you'll be wanting another price hike for color matching with my still unpainted impossible for an axle to spin torque prosthetic sleeves that got so rusty from riding on the beach in July that I'm too embarrassed to post a pic. That's ok, I never told you the rental price for using my motor for testing.

I'm just happy that without even testing my 2kw 2 speed Erato motor that I know it will run fine, since I know with certainty that the phase wires are good. Put me down for a few, so I can use my hall wires, even on motors with healthy harnesses, for temperature sensor inside the motors.

I can't wait till you guys solve electronic braking / regen. With my jackrabbit riding, it should really pay off for me in terms of safety and overall efficiency. Sorry, no rest for the wicked.

John

 

[Knuckles]

Yes Dear!

 

[docnjoj]

Talk about an "odd couple"!!!!!!
otherDoc

 

[Knuckles]

John is my bitch. (or vise versa - not quite sure)

 

[John in CR]

Great, I've been upgraded from poor stepchild.

This new gadget needs its own thread. 36/48v 600w ain't applicable, and it's not even a controller, is it? I thought we were talking about something that goes between the motor and the controller. Please include voltage and amp limits, if any, in the new "Savior" thread.

John