How to get unity power factor in three phase rectifier by hysteresis current controller

attain unity power factor in input side by hysteresis current controller

Answer 1

[Anees Ansari]

attain unity power factor in input side by hysteresis current controller

Answer 2

[Purushottama Rao]

Steps: 1) Sample the input line voltage signal. Use a PLL for syncronization, the output of which is a unit mag sinusoidal signal inphase with the line voltage. 2) Prepare the ref current. This can be obtained by multiplying the required curret rms value with the PLL output. 3) Measure the input current 4) Calculate the error between the above two currents 5) Define a hystresis controller with the defined hystersis level. Relay block in simulink does this for you. Hystersis limits defines the switching frequency and THD. 6) Pass the output from hystersis to the switches directly.

It should give you the required output. ALL THE VERY BEST

[Anees Ansari]

sir, i have done same thing which u mentioned in your comments but sir, i didn't get unity power factor, can you provide me the simulation block or any images of that block by that i check what mistake i have done on my simulation circuit

[Purushottama Rao]

I propose to have your model or a print screen of it to fix it.

[Anees Ansari]

sir,this diagram i took from ieee paper plz suggest me that what i did a mistake for not getting unity power factor

[Anees Ansari]

Answer 3

[Anees Ansari]

sir,this diagram i took from ieee paper plz suggest me that what i did a mistake for not getting unity power factor

Answer 4

[Anees Ansari]

sir,this diagram i took from ieee paper plz suggest me that what i did a mistake for not getting unity power factor

[Purushottama Rao]

Dear Anees, Thanks for the info. Picture was not clear especially the lower power part Below the diode bridge.I would like to see what is there inside it?

I could not find any return path other than the diode bridge for the phase current. Gv more details. Share your model for better help

[Anees Ansari]

sir i am sending u my project please cheak it why it is not showing unity power factor

    if true
      % code
    end

[Anees Ansari]

sir, can u give me ur email id i will send u on email matlab desigm program here it is not paste

Answer 5

[Anees Ansari]

sir, can u give me ur email id i will send u on email matlab desigm program here it is not paste

[Purushottama Rao]

[e-mail]

[Anees Ansari]

sir, i mailed u my model plz give me the right solution .