switched reluctance motor

[tonerobanks]

Just uploaded a data sheet concerning this project

 

[johansen]

i've always had a soft spot for switched reluctance motors, but what is the point of your post?

 

[tonerobanks]

Basically I need to build a control circuit for the motor which compromises of 2 parts hardware and software. About the hardware I need to figure out a befiting current limiting circuit using comparator, 555timer and a nand gate. But I have no idea how I am meant to com up with this.

 

[johansen]

ah, well, that's homework then and dead simple.

did you know that any common stepper motor is also a switched reluctance motor? -its just essentially over driven, and run saturated the whole time, the magnets just providing the holding torque?
if you spend 5 minutes googling.. you can find PHD thesis material on switched reluctance motors.

 

[tonerobanks]

ok but now my problem is knowing what Im looking for??

 

[tonerobanks]

a hint would be so helpful

 

[duffy]

did you know that any common stepper motor is also a switched reluctance motor? -its just essentially over driven, and run saturated the whole time, the magnets just providing the holding torque?

When you do it right. I clock the buhjesus-beans out of mine with about 50V on a 12V motor. Gets them coils up to speed pretty fast!

But the other thing the magnets do is provide starting direction. Tonerobanks - can your motor self-start, or are you going to have to spin it? There seems to be only one pole there...