hi,
  this is pavan,presently i am dealing online ups project.In that i am
usin pid and pfc fuctions. in pid i get problem in using of
compensators,any one please send me voltage compensator transfer
fuction equation and current compensator transfer fuction
equation.please send me breifly.........!

regards,
pavan ningala.

On Jan 7, 6:18 am, pavank ningala <pvn.ning...@gmail.com> wrote:
> hi,
>   this is pavan,presently i am dealing online ups project.In that i am
> usin pid and pfc fuctions. in pid i get problem in using of
> compensators,any one please send me voltage compensator transfer
> fuction equation and current compensator transfer fuction
> equation.please send me breifly.........!

PID:

F(S) = Kp  + Ki/S  + Kd * S/(1 + K4 * S)

Kp is proportional gain ie: the gain applied to the error as it is
right now.

Ki is the integral gain ie: all of the error signal from the past is
included.

Kd is the differential gain ie: applied to how fast the error is
changing

K4 exists because the differential signal can't have infinite band
width.


The above is sort of a general purpose servo feedback system.  The PFC
is a method of making the current drawn by a circuit appear to be for
a purely resistive load.  You need to think about the PFC part first.
It will set the parameters of the PID controller for the PFC input
section.

On Jan 7, 9:36 am, MooseFET <kensm...@rahul.net> wrote:
> On Jan 7, 6:18 am, pavank ningala <pvn.ning...@gmail.com> wrote:
>
> > hi,
> >   this is pavan,presently i am dealing online ups project.In that i am
> > usin pid and pfc fuctions. in pid i get problem in using of
> > compensators,any one please send me voltage compensator transfer
> > fuction equation and current compensator transfer fuction
> > equation.please send me breifly.........!
>
> PID:
>
> F(S) = Kp  + Ki/S  + Kd * S/(1 + K4 * S)
>
> Kp is proportional gain ie: the gain applied to the error as it is
> right now.
>
> Ki is the integral gain ie: all of the error signal from the past is
> included.
>
> Kd is the differential gain ie: applied to how fast the error is
> changing
>
> K4 exists because the differential signal can't have infinite band
> width.
>
> The above is sort of a general purpose servo feedback system.  The PFC
> is a method of making the current drawn by a circuit appear to be for
> a purely resistive load.  You need to think about the PFC part first.
> It will set the parameters of the PID controller for the PFC input
> section.

You should be a teacher or something.

On Jan 7, 11:50 am, a7yvm109gf...@netzero.com wrote:
> On Jan 7, 9:36 am, MooseFET <kensm...@rahul.net> wrote:
>
>
>
> > On Jan 7, 6:18 am, pavank ningala <pvn.ning...@gmail.com> wrote:
>
> > > hi,
> > >   this is pavan,presently i am dealing online ups project.In that i am
> > > usin pid and pfc fuctions. in pid i get problem in using of
> > > compensators,any one please send me voltage compensator transfer
> > > fuction equation and current compensator transfer fuction
> > > equation.please send me breifly.........!
>
> > PID:
>
> > F(S) = Kp  + Ki/S  + Kd * S/(1 + K4 * S)
>
> > Kp is proportional gain ie: the gain applied to the error as it is
> > right now.
>
> > Ki is the integral gain ie: all of the error signal from the past is
> > included.
>
> > Kd is the differential gain ie: applied to how fast the error is
> > changing
>
> > K4 exists because the differential signal can't have infinite band
> > width.
>
> > The above is sort of a general purpose servo feedback system.  The PFC
> > is a method of making the current drawn by a circuit appear to be for
> > a purely resistive load.  You need to think about the PFC part first.
> > It will set the parameters of the PID controller for the PFC input
> > section.
>
> You should be a teacher or something.


A lot of people would argue that I already am a "or something"  :)

MooseFET wrote:
> 
> A lot of people would argue that I already am a "or something"  :)


   That's still better than an 'or nothing!' :)


-- 
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida