DeadBeat controller for pwm inverter

[paul0]

Dear all,

I have a deadbeat controller with a control law as follow:

u(k) = -0.8*u(k-1) + -3.1*y(k) + 2.4*y(k-1) + 2.9*yr(k+1)

where signal u(k) is the control law and is the output of my half bridge inverter ( it s also an input to my LC filter )
y(k) is a sinusoidal wave output of my LC filter (which is next to my inverter)
yr(k+1) is a discrete reference sinsusoidal signal
So the goal here is that the signal y(k) has to follow the reference signal at every sampling interval.
I am expecting to get a pulse width modulated signal for u(k), but what I get in simulation is a sinusoidal signal !! Is that right ???
I hope that was enough clear and I m waiting for your answers

thanks

 

[mesohaib]

Hi! I am designing a 3-phase Inverter by implementation of Deadbeat control on it with LC-filter. I want the basic model of that. If u have kindly provide me on sohaibchauhdary@gmail.com.