I am currently working on integrating two inverters in parallel. In that I am trying to use two different controllers-one voltage and the other current controller for one of the inverters. I am trying to operate them for two different cycles(one at a time).

The following Tutorial Ppt on PSIM may be useful to operate Two invrters in Parallel and measurements of load power, RMS current and power factor,where you need voltge,curren(and also Power Factor or a Watt meter Element) .

You may have to use an additional Alpha contoller for the second inverter,

Link:  http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0CDAQFjAD&url=http%3A%2F%2Fwww.feng.pucrs.br%2F~fdosreis%2Fftp%2FPSIM50%2FPSIM_tutorial.ppt&ei=yPzzVPS8EZWXuAT1mYLwAQ&usg=AFQjCNEQsf1knG8g6BbDxj_cxAxRsJIV-Q&sig2=XfMgW9GpqI6LjdwEo3UNkQ&bvm=bv.87269000,d.c2E

Example 2: Voltage Controller

Additional measurements: load power, RMS current and power factor. (Example 5-2; Hart; pg 170

Otherwise think of Sim coupler module to make use of Matlam/Simulink Features also

Link:  http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=8&ved=0CEUQFjAH&url=http%3A%2F%2Fwww.psim-europe.com%2Fopenload2.php%3Fdoc%3DtutorialSimcoupler.pdf&ei=WwX0VJmaKcbluQTJsIGQCw&usg=AFQjCNHJp-H-WtX1OUwbkNkjMCO-opG-xw&sig2=NwdSoHZnebR_DewmIjBIwA&bvm=bv.87269000,d.c2E

The SimCoupler Module provides the link between PSIM and Matlab/Simulink* for cosimulation.

The objective of this tutorial is to show how to use the Simcoupler Module and set it

up in PSIM and Simulink.

A simple buck converter with current feedback control (file “chop1q_ifb.sch”), as shown below

in the PSIM environment, will be used as the example. In this circuit, the inductor current is

measured and compared with a reference. The error signal is sent to a PI controller, and the PI

output is compared with a carrier waveform to generate the gating signal that controls the switch

in the power circuit.

In this tutorial, we will illustrate how to split the circuit so that part of the control circuit (as

shown inside the dotted rectangle) is implemented in the Simulink environment, and the rest of

the circuit stays in PSIM. Note that this tutorial is for PSIM Version 7.0.

Note that this circuit can be simulated with the PSIM demo version

The circuit inside the rectangle will be implemented in Simulink. ..........

Below are the steps in the PSIM environment:

1. If you are using the PSIM version with the Hasp key, skip this step. The program

“SetSimPath.exe” should have already been executed automatically during the PSIM

installation.

1. If you are using the PSIM Time-Limited Version or a version that does not require a hardware key, from the PSIM directory, run the program “SetSimPath.exe”. This will set up the SimCoupler Module with the Matlab/Simulink, and will add the SimCoupler block into the Simulink library browser.

2. Launch PSIM, and open the file “chop1q_ifb.sch”. The file can be found in the folder

\examples\SimCoupler in the PSIM directory.

3. Save the file to a different name, “chop1q_ifb_psim.sch”, in the directory “c:\test”.

4. Modify the circuit by deleting the reference source, the summer, and the PI controller.

After the modification, the circuit will look as follows: .........

P.S.