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Hello friend,
Why do not use you mosfets, and low-high side dirvers for each arm of the bridge???
Please view the other threads in this forum... to help you!
https://www.edaboard.com/threads/219997/
Good job!
Basofias
Hello goldsmith,
I appreciate your help in this forum.
About the dead time, I'm go test your circuit, and post the result of the tests.
Thanks for all,
Basofias
Hello goldsmith,
My problem is just solved.
My circuit design have a little problem in the connections of the bootstrap capacitor. (I was missing the ground connection in de negative pin of the bootstrap cap).
I have now other question, how do I make a dead time in the PWMs for the H...
Hello friend!
I have same problem!
At low side it is OK! At high side, the output only show a constant voltage, usualy is equal to Vcc 12V supply.
Any solution for this problem?
Please see may post, and my example:
https://www.edaboard.com/threads/250505/
Thanks for the help.
Basofias
Hello goldsmith,
I'm now testing H Bridge of my inverter:
Drivers are based on International Rectifier IR2110S, one for each arm of the bridge (Low Side and High Side).
This is my design:
These are my wave forms:
My question is the High outputs of the IR2110's are always on and not...
Hello goldsmith,
I have understanded all your explanations, without problems!
At this moment I'm just testing the h bridge controller, and the H bridge.
My H bridge at this moment is based on 4 N-Channel Mosfets, and the supply voltage (DC BUS) is 12 or 24V, only for testing the response of...
Hello goldsmith,
I'm trying to generate the PWMs with this method:
The Atmega328 create a 2 PWM signals, and one are inverted in relation to de first one, but with atmega I can not stop the PWM counters.
Well, I use "and" logic gates to do this function, you understand?
Se the pictures in...
Hello babatundeawe,
How do you do sinewave with PIC micro? Three level PWM? Or Bilevel PWM?
About your questions:
Fcutout = 2,5kHz
Filter LC type
The ressonant elements Inductor with rating for 5A and capacitor X2 type.
I have only one question in these filters... which the characteristic...
Hello Goldsmith,
I think 2 pole filter is equal to socond order filter, for that i say this in my diagram.
I wrote 1 pole in all the filters, except in the last one, because I think that these filters only have one order and one pole!
Not exists relantionship of these two parameters??? Number...
Hello friends,
About your expalnation, I am understanding it!
Why you choose 4kHz for fc? It's not possible to use onother value of frequency?
Please see the attached picture, for better understanding of my questions.
Thanks.
Basofias
Hello friends,
I am building at now, a DC-AC sinewave inverter.
I'm designing de output stage, H-bridge and LPF (Low Pass Filter), i have some questions abou te LC output filter.
My SPWM switching frequency is arround 8kHz (10kHz max)
My output sinewave are fundamental frequency 50Hz.
How...
Hello SunnySkyguy,
See my explanation!
My method are trivial for me!
Today i'm going to tests and, afther these tests i post the results.
Thanks for the help!!!
Basofias
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