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Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > Req. help with grid sinchronization of DC/AC inverter
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Sun_rise_pt
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« on: August 15, 2007, 10:16:11 10:16 »
Hi friends!

I need a  help with a practical methode (schematics) to track the 50Hz line grid and lock my DC to AC converter ( 220V / 1 phase ).

Thank you.
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sohel
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« Reply #1 on: August 15, 2007, 11:08:26 11:08 »
must be same curve.
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Sun_rise_pt
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« Reply #2 on: August 15, 2007, 03:07:51 15:07 »
I know Sohel.

I think to need a PLL or similar to track the frequency and phase...

I don't have a ideia how the commercial grid tied inverters works t with the synchonization.

Then if anybody have a schematics are beautyful.
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sohel
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« Reply #3 on: August 15, 2007, 04:12:18 16:12 »
sorry i have no idea about it,

 Grin
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sam_des
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« Reply #4 on: August 16, 2007, 08:35:12 20:35 »
Hello,

Search FreeScale's site. They have On-Line UPS designed with DSP5680x & CPU12. Register & you can get complete source code & schematics. Both designs include Line-Synchronization using Digital Controllers.

reagrds,
sam_des
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Taner
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« Reply #5 on: August 17, 2007, 07:13:57 19:13 »
Hi,
what kind of synchronization you need, digital or analog PLL.
I have a one analog solution for grid synchronization,
with one generator and sallen-key low-pass filter,
but have a dephasing with grid.
 Smiley
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Sun_rise_pt
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« Reply #6 on: August 18, 2007, 09:55:08 09:55 »
Hi Taner.

Share this with us, please.

Thank you.
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Taner
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« Reply #7 on: August 22, 2007, 07:10:13 19:10 »
Hi Friends,
here is a circuit of the grid synchronized generator.
Best Regards: Taner
 Smiley
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Sun_rise_pt
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« Reply #8 on: August 23, 2007, 06:39:14 18:39 »
Thank you Taner.

Are a good help for me!
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