active power filter comprehensive circuit diagram

[Proflakes]

pls is there anyone dat can help with a comprehensive circuit diagram of shunt active power filter. tanks

 

[BradtheRad]

The articles below were among the hits via internet search.

I saw schematics that look like a mix of components and block diagrams. Not sure any of them are working circuits.



http://www.nokiancapacitors.ru/documents/theory/EN-TH05-11_2004-Shunt_Active_Filters.pdf

 

[FvM]

Not sure any of them are working circuits.

They surely are. The power front end is the same in both publications, a three-phase bridge with inductors and a DC bus capacitor. The challenge is in designing the control circuit, which is mostly a matter of digital signal processing.

 

[BradtheRad]

They surely are. The power front end is the same in both publications, a three-phase bridge with inductors and a DC bus capacitor. The challenge is in designing the control circuit, which is mostly a matter of digital signal processing.

Yes, I've seen articles showing a schematic that appears complete... then I look closer and realize that those switches going to various components, etc., are really abbreviated icons.

They stand for something that will take more work and effort. I suppose a microcontroller is implied, controlling banks of mosfets.

 

[bubulescu]

Hello,

If you want, there are some schematics in LTspice, hosted in the LTspice Yahoo Group (subscribing is needed, to avoid spam). Should you decide to take a look, here's the place to see them: Files > Examples > Educational > Power_Conditioning . Inside there's an archive and a README, but you may also want to read some of the files inside the archive. The schematics are at block-level but made from a descriptive point of view. There are also are a few other examples.

Good luck,
Vlad