PI controller (feed back control) for boost converter

[Naeem]

Hello Everyone,

I am trying to put together a PI controller for a boost converter.

Vin = 150V
Vout = 300V (Require this much boost)

Switching Frequency = 25KHz

I am attaching a schematic in PSPICE. Please , someone, tell me if the connections are right. Also V-PULSE / SAWTOOTH = (0 - 10V) . Original Design for : Duty Cycle 50 % . How do I adjust the KI and the KP ? Any rule of thumb for this.

TR = 39.9us
TF = 0.01us
PW = 20u
PER = 40u
All other parameters in V-PULSE SET TO ZERO.

 

[berkeman]

Hello Everyone,

I am trying to put together a PI controller for a boost converter.

Vin = 150V
Vout = 300V (Require this much boost)

Switching Frequency = 25KHz

I am attaching a schematic in PSPICE. Please , someone, tell me if the connections are right. Also V-PULSE / SAWTOOTH = (0 - 10V) . Original Design for : Duty Cycle 50 % . How do I adjust the KI and the KP ? Any rule of thumb for this.

TR = 39.9us
TF = 0.01us
PW = 20u
PER = 40u
All other parameters in V-PULSE SET TO ZERO.

Sorry, I'm not seeing the feedback path. Is this running open loop under the influence of VCONTROL?

 

[Naeem]

No, it is a closed loop system. I think the negative of the VCONTROL should go to the output of the VCAP. That should provide a feedback path. Assuming that is done. How do I adjust the gains ?

 

[Naeem]

Also, how do I adjust the voltage on the Integral gain constant ? How much should VCONTROL be ? should it be set to 300V, and the settings on VPULSE , Are those OK ?