Hi,
my aim is to generate a constant torque on a motor with delta configuration. Therefor I had some general questions and I hope you can help me.
The first things are more general considerations about the BEMF. Are the following considerations correct ?
For example I have 3 phase motor connected and the motor is rotating with 1000 rpm and the BEMF is 6V. Switch 1 and 4 is closed (see first picture).
1. I would get a motor voltage of: Um = 24V - 6V = 18V, right ?
2 When I open the switches 1 and 4 the motor inductance would be induce a voltage and could cause a current into the Power Supply ?
3. And the same for the BEMF voltage. Can this cause a current which is flowing through the 24 V Power Supply ? I am a little bit confused, because when I am thinking on the superposition principle it should be possible also when the BEMF voltage is smaller then the 24V. But from the logical perspective it should be not.
3. When the switch 2 and 3 will be closed (1+4 are open) the motor voltage is Um = 24V + 6V = 30V ?
4. Is it possible to drive also motor in delta configuration with the motor driver DRV8353 ? In the block diagram it was only shown in star configuration.
Best regards and have a nice weekend.
Dirk
