Sinewave inverter prototype...

[engmunir]

Dear deepone/naseerak
Sir
Can u send complete final schematic without any error and source code with all details which i can make and test

 

[DeepOne]

Hi, Engmunir. You may try circuit with atmega8 mcu from message #88.

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Why such a wide range 10-----24v supply, transformer also has to be changed.

this because i will test output voltage regulation without changing sine tables.
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apropos, last circuit with attiny13 is not work (

 

[engmunir]

Dear Deepone
which source code is used for msg #88 circuit. detail??

 

[DeepOne]

there only one archive with message #88 - c&hex&pcb_mega8.zip

 

[DeepOne]

test version of previously announced STM8S-based converter )

 

[naseerak]

Hi DeepOne and sorry for going off-topic. I am talking about one of smps circuit you posted earlier, plz tell me the size of the Core for this power I have EE42 (gaped) EE40, EE55 can I use these for charging 48V battries (12V in series) with current of 15A-20A.
Thanks and regards.

 

[DeepOne]

Hi Naseerak. You may use some program for core calculations, like ExcellentIT.


but this old scheme is not very good, in gdt driving and short circuit protection parts

 

[DeepOne]

corrected version of tiny13 converter (only spwm for testing purpose, but it work).

 

[DeepOne]

DC output converter project, but similar with previous in schematics and with HF transformer instead of steel core transformer. For power tools with collector motor.

 

[DeepOne]

Next version of last tiny13 converter for power tools.

And next sinewave inverter prototype project )

 

[Algri]

Hello DeepOne. I want to collect the UPS on the principle of double conversion (on-line). But when I began to search the internet approximate circuit solution proved that the presence of only the block diagram and description of the work. You ready to DC / AC with a sine wave output. If you add the PFC and charger will UPS on-line. I wonder such a device to collect for a gas boiler.

 

[DeepOne]

Hello, Algri.
I think easiest way to obtain on-line UPS is in combine PC ATX PSU, any step-up 5V to 13,6V converter with current stabilizer and the DC/AC stage converter.

 

[Algri]

The idea of online UPS based ATX PSU thought out is not difficult but I want to unload the 12 volt batteries ispolzova 24 volts. And I think to be right in terms of circuitry to build a block diagram.

PFC want to use the UC3854 sama getting the best efficiency. PFC will operate in the range of stresses 165 - 265 volts. Giving the output constant 400 volts. Thereby obtaining stabilization

 

[DeepOne]

test version of spwm converter with ferrite transformer. not very good output signal, but it work.

 

[DeepOne]

Corrected wave distortions - they were by reason of used very slow IGBT as upper bridge keys. With all IRF740 keys waveforms is ok.

 

[DeepOne]

slightly modified, with additional drivers on push-pull keys

 

[thannara123]

slightly modified, with additional drivers on push-pull keys

Howmuch watt inverter you are doing ?

 

[DeepOne]

that is experimental version, not very powerful - i think no more than 150W. but power is not a big problem. at 50W output all semiconductors are cold )

 

[DeepOne]

600W version, but not ready.

 

[thannara123]

slightly modified, with additional drivers on push-pull keys

Is it working well ?