Power Electronics Development Center
Three-Level(12 switch) Converter Switching using SVPWM
Hi;
Well currently I am still working on Sinosuidal PWM (SPWM) on my board; I have also tried a little bit on SVPWM, but I have not been succesful yet; I occur problems, I hope I can figure it out. 
Saeed
No problem. It's included with the NI SoftMotion Toolkit which you can download from here in evaluation mode.
http://www.ni.com/download/labview-ni-softmotion-module-2013-sp1-f1/4602/en/
After installing, launch the NI Example Finder and go to Device Specific>NI 9502>Velocity FOC.lvproj.
Then open the FPGA application, which is also located here:
C:\Program Files (x86)\National Instruments\LabVIEW 2013\examples\Motion\Primitives\HW\FOC Velocity Control (9502)\Velocity FOC FPGA.vi
You'll find the Space Vector Modulation IP Core in the FOC and Halls control loop. In the loop you'll also find cores for Park and Clarke (dq) transforms and inverse transforms, and a PI controller that's optimized for field oriented control of the direct (d) and quad (q) currents. Although the example is for CompactRIO, you could easily copy these IP cores into an sbRIO GPIC control application.
By the way, here is a table for voltage vectors of a three-phase, three-level VSI in the alpha-beta plane.
Here's a few papers that might be useful. The first one explains how you can use a 2-level SVPWM scheme (like the one shipped with NI SoftMotion) to build a 3-level SVPWM by adding some additional state machine logic. This might be a good way to go since you can use the existing 2-level SVPWM IP core from NI SoftMotion as a starting point, and it's an efficient implementation for 3-levels.
Papers:
Efficient Space Vector PWM Scheme for 3-Level Inverters
