powersys
Advanced Member level 1
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Hi...
I wish to control the speed (close-loop control with speed feedback) of a dc motor via PWM field winding voltage control (see attached figure). Do I need any diode in the circuit? Is the voltage seen at the terminals of field winding "ripple free"? Is the current flowing through the field winding "ripple free"?
Thanks.
I wish to control the speed (close-loop control with speed feedback) of a dc motor via PWM field winding voltage control (see attached figure). Do I need any diode in the circuit? Is the voltage seen at the terminals of field winding "ripple free"? Is the current flowing through the field winding "ripple free"?
Thanks.
![91_1257948632.jpg](https://obrazki.elektroda.pl/91_1257948632.jpg)