Active Power Factor Correction For Three Phase AC drive.

Status
Not open for further replies.
A

atifsheikh_91

Member level 1
Joined
Dec 28, 2011
Messages
38
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,566
Hy to all
I am doing a project related to my academics . I have found myself trapped in active Power Factor Correction . Can anyone recommend me good IC for this purpose, or any other reading material.

i am having DC-bus of 600Vdc and my current rating is 6A.
I have completed my design of Ac drive for three phase motor, with a transformerless rectifier (i/p 330Vac / O/p 600VDC) and have made VFD using Ir2110. Now i am not finding a way to install an active PFC module in my project.
 
Last edited:

Dear atifsheikh
Hi
You can use an LM2577 ( boost converter driver which can be used for PFC ) But if you need higher powers , you can use an opto coupler and then a high power IGBT or Mosfet to do that .
Best Wishes
Goldsmith
 

goldsmith said:
You can use an LM2577 ( boost converter driver which can be used for PFC ) But if you need higher powers , you can use an opto coupler and then a high power IGBT or Mosfet to do that .
Goldsmith
Click to expand...

Hy Goldsmith,
Can you provide more details ; as i am having DC-bus of 600Vdc and my current rating is 6A.

I have completed my design of Ac drive for three phase motor, with a transformerless rectifier (i/p 330Vac / O/p 600VDC) and have made VFD using Ir2110. Now i am not finding a way to install an active PFC module in my project.
How to configure lm2577 which has Vin of 45V :S ...
 

Hi again
As you probably know , each Rectifier , with capacitor , will make high value of reactive power . hence , you have to use a PFC , after your rectifier and capacitor , it will improve the current waveform , to achieve , cos phi = nearby 1 .
So , a boost converter is incredible for it .And as i told you at past , if you need higher power and voltage , it is simple , you just need to add an opto coupler , and then it will connect the out put PWM , into a high power mosfet , e.g IRFP450 or IRFP460 , thus it can handle this rage of power easily . then you can create a feed back loop after that simply .
Best Wishes
Goldsmith
 



I have a frim believe that you wud be right ; as you have previously helped many (inc. me) in resloving their issues. But this time i am unable to understand what i have to do; may you help me with a schematic
 

Hi again
Schematic about what ? about how a PFC that based on boost converter does work , or, about how you can make a high power PFC with a low power integrated circuit ? or perhaps both of them ?
Best Luck
Goldsmith
 

goldsmith said:
Hi again
Schematic about what ? about how a PFC that based on boost converter does work , or, about how you can make a high power PFC with a low power integrated circuit ? or perhaps both of them ?
Best Luck
Goldsmith
Click to expand...

I need schematic of how to make high power PFC with low power IC.
Thnx
 

Well , no problem , if you stay , some minutes , i'll draw it for you .
 
Last edited:

Hi again
I came back , see below , please , it would help you .
View attachment PFC.pdf
BTW : don't forget to add line filter in your input . it is very important for PFC .
Good luck
Goldsmith
 

BTW : don't forget to add a resistor in parallel with GS junction .
And another notice : if you use an opto coupler which as a totem pole in it's out put , it will be incredible . ( before your mosfet )
 

:S , what you have drawn :S
cant understand a thing
 

You have drawn 2 sections? how these 2 sections are interconnected?
 

Hi again
Of course not . did you see them carefully ?
first one is how this ic does work , and the other is how we can change the power of IC with our desired value , with an external mosfet . is that unclear ?
Best Wishes
Goldsmith
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…