Hi all. I am a noob to this forum, but not new to forums. I am a technician and have worked at various factories as well as the military. Now that i've introduced myself I have a question that might be answered here.
I have always troubleshot machinery with with bad drives down to the drive, but now i'm supposed to start fixing the drives themselves, all of various manufactures.
It pertains to drives, old and new:
1. Is there a general, or common theory of operation amongst all drives in ac circuits? Motor drives to be specific.
2. What are the internal devices in drives used to control amperage or frequency outputing the drive to the motor? SCR's?
3. On DC drives, is current outputing the drive linear of is it pulsing?
Basicly, I need to know theory of operation of AC and DC drives and major devices used in them. I've searched a little in the forum, but didn't find what I am looking for.
I have always troubleshot machinery with with bad drives down to the drive, but now i'm supposed to start fixing the drives themselves, all of various manufactures.
It pertains to drives, old and new:
1. Is there a general, or common theory of operation amongst all drives in ac circuits? Motor drives to be specific.
2. What are the internal devices in drives used to control amperage or frequency outputing the drive to the motor? SCR's?
3. On DC drives, is current outputing the drive linear of is it pulsing?
Basicly, I need to know theory of operation of AC and DC drives and major devices used in them. I've searched a little in the forum, but didn't find what I am looking for.