Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

PSIM PWM Control for resonant inverter

Status
Not open for further replies.
U

user92

Newbie level 3
Joined
Dec 24, 2014
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
26
Hi all,

I have been stuck on this for a while and would be grateful if anyone can give some help.

I am modeling a half bridge resonant inverter in PSIM and my issue is with the Bi-polar PWM control. I can not figure out how to introduce a dead time between two switches operating.

Anyone have any pointers? I see there is other two PWM blocks but I am finding it difficult to get it to work correctly. I looked at the examples and they are full bridge so its somewhat different.

Thanks

Screen Shot 2015-01-02 at 13.48.56.png

Screen Shot 2015-01-02 at 13.50.54.png
 

The resonant action makes it feasible for a comparator (or op amp) to be triggered on-and-off.

Oscillations start reliably from powerup. Caveat, it's a simulation. It's untested.



The op amp is an ideal model, not real. In a real circuit it will require several components to do what it does.

Not sure about dead time. Perhaps this could be done with 2 op amps. Reference voltages could be applied to the inputs, and adjusted to turn off both transistors for a desired time.
 

Hi user92,
i think you can write a C code for your controller and insert a delay in your code for dead time purposes.
you can use digital controller block in psim,
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top