Recent content by emaN resU

Hey man, It'll be fiiiiiiine! Did you read my comment in post #5? The guy I asked who designs motor controllers confirmed my suspicions. Your point about modelling it on stationary inductance is so true, I did attempt to use the information on the website below, but some of the properties...

Ok, reading what you have just said a few times, i realized i had misunderstood what you were saying. Whether I call it a chopper or a buck circuit won't make much difference, I agree, sort of (unless its a buck chopper, i think :P). However, the difference between a buck and boost circuit...

hey dude, I've only simulated using OrCAD, which I get the results I was hoping for, so when I change the gate drive voltage of the IGBT to be on for half or a quarter duty cycle i get 100V and 50V respectively of average voltage. So, surely a step down converter. I showed the circuit to a guy...

Yeh, I've read that. Google is a great tool! I wouldn't be on a forum pleading for help if I could google it, trust me. I thought i had designed a buck-boost circuit, but as its a 1 quadrant drive and will never go into boost (regen) mode so it's just a buck converter. I'm so confused...

Why thank you! Hmmmm, this is not good. When you say a series switch element are you talking about a high side driver or something altogetehr different. I thought aslong as it had a FWD in parallel to the motor the motor voltage would be dropped down. Precisely, it would be for an...

Ok, first post so be nice guys! I've designed and simulated a design for controlling a brushed DC series motor in OrCAD and it does what i was aiming for it to do. Which is to step down voltage to an average of 50% with duty cycle at 50% etc. I thought I had it all figured out but...