I don't know much about motors, so I would like to ask a question about three-phase stepper motor drive!

lltd2020

I don't know much about motors, so I would like to ask a question about three-phase stepper motor drive! [Copy link]

I have a manual about the air flow control valve in my hand. The manual describes that there is a three-phase stepper motor inside, and its rotation controls the opening and closing degree of the valve.
The schematic diagram and main parameters of the entire valve are as follows:

The valve is powered by DC28V, with a step angle of 15 degrees. It has three coils and a common terminal, which is slightly different from the general Y-shaped structure. There is an extra common terminal. The two switches on the side are position switches, through which you can know the opening and closing status of the valve.

Now the question is, how to drive the motor?

I originally wanted to find a ready-made driver, but after learning more about it, I found that the three-phase stepper motor drivers on the market seem to only support ring-shaped coils (the coils are connected end to end). I asked several merchants' technicians, and they all said that they did not support it.

Please help me if you know any solution. Is there any ready-made driver or driver board that can make it move? Or a corresponding driver circuit is also fine. Or you can tell me your own ideas. Thank you. The leader is pushing me too hard!

annysky2012

There are really few such drivers on the market. My suggestion is to buy an H-bridge driver and control the three-phase driver as a single-phase one, that is, the common end is connected to one end of the fixed driver, and the three phases are connected to the other end of the driver for control.

lkh747566933

The star and delta connection motors can be driven by the same hardware level, the key difference is in the software