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Anonymous Poster

output voltage riple reduction

09/23/2008 1:38 AM

how to reduce the output voltage ripple of thyristor based ac/dc converter-india
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cnpower
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Engineering Fields - Control Engineering - New Member China - Member - New Member

Join Date: Sep 2006
Location: CHINA
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#1

Re: output voltage riple reduction

09/23/2008 1:47 AM

increase L nd C.
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Sparkstation
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New Zealand - Member - Interested in everything- see my Profile please APIX Pilot Plant Design Project - Member - Member Engineering Fields - Electrical Engineering - Member Engineering Fields - Power Engineering - Member Engineering Fields - Civil Engineering - Member Hobbies - Musician - Autoharp and Harmonica Hobbies - Hunting - Member Hobbies - Fishing - Member

Join Date: Nov 2007
Location: Christchurch, (The Garden City), South Island, New Zealand
Posts: 4395
Good Answers: 230
#2

Re: output voltage riple reduction

09/23/2008 1:49 AM

Hello "Guest"

This is normally done via a "Pi" series network, or more than one is series with the rippled DC output from the Converter.

DC connects to: [ "Pi filter" = Parallel capacitor - Series Inductor - Parallel capacitor] [then add another section -> - Series Inductor - Parallel capacitor.

That way, with careful selection of capacitor and inductor for each stage, the ripple is cheaply and easily brought under control.

Read about it here: http://en.wikipedia.org/wiki/Capacitor-input_filter

There now, the job's been done for you.

Kind Regards....

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Anonymous Poster
#3

Re: output voltage riple reduction

09/24/2008 6:08 AM

sparkstation's got it right, as usual, but I'm a little puzzled with the item of question.

thought "ac/dc"--were identified as a "rectifier"

thought "dc/ac"--were identified as an "inverter"

Of couse crs has something to do with my current memory status.

Donzi
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coconutpete
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#4
In reply to #3

Re: output voltage riple reduction

09/24/2008 5:55 PM

I think we are just doing someones homework for them AGAIN

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 "Multa ferunt anni venientes commoda secum, Multa recedente adimiunt". (The years as they come bring many agreeable things with them; As they go they take many away).
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