Single phase Inverter with PWM

181

04:03:00

Working how I wanted it to. I love this simulator. I've learned a lot from seeing it

published 9 years ago

BillyT

9 years ago

I'm not sure what you're trying to do, but if you lay the circuit out a bit neater and put a few more traces on the screen, it might help you see what is happening.. http://everycircuit.com/circuit/5855104347668480

mcdonalds

9 years ago

Trying to get the timing right on the MOSFETS so that the current oscillate correctly

jpoulin0901

9 years ago

Yikes.. you've got a lot of issues here. The two biggest things standing in the way of what you're trying to do is that your 80Hz sources are 120 degrees out of phase when you need 180 and if you look closely at the h bridge, it's not the same on both sides but it should be.

BillyT

9 years ago

Made the corrections mentioned by @jpoulin0901 plus one fet was reverse biased. Then realized that one op amp is always turned off. Cross wired the gets the circuit I previously posted now works.

mcdonalds

9 years ago

Ok. I fixed the phase shift and corrected the h-bridge. Not sure why it still won't oscillate back and forth

mcdonalds

9 years ago

@BillyT I see yours and it looks good but it doesn't oscillate either

2ctiby

9 years ago

Adjusted the BillyT version here... http://everycircuit.com/circuit/5333399904714752

BillyT

9 years ago

@2ctiby, Good to see the final result working.

2ctiby

9 years ago

It is oscillating, but I don't think it is what mcdonalds is after....I think that he wanted the four mosfet group to act like an H forward-reverse motor setup, whereby it alternated automatically as per period/frequency from the pulse source (it would have helped if he had said that so that we could have had a good starting point). Anyway.....here is hopefully a good start for further messing... http://everycircuit.com/circuit/5155740864217088

mcdonalds

9 years ago

@BillyT Amazing work. Wow. Why did I think of that. This is what I was looking to accomplish

mcdonalds

9 years ago

@jpoulin0901 @BillyT @2ctiby You all are great. Thank you for all your help. I love the engineering community

2ctiby

9 years ago

Thanks, here is some further help for this project of yours.... http://everycircuit.com/circuit/6642184619294720

mcdonalds

9 years ago

@ctiby thanks for the help and helping me understand MOSFET EC seeing

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.