MATLAB results:
We were able to attain a working Space Vector Pulse Width Modulation that generates sinusoidal current waves based on a rotating complex voltage vector input and matches many theses’ results for the technique. 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

We were also able to calculate the new flux angle position to be used in our Park/Inverse Park coordinate transforms. All of the MATLAB source code is viewable in our Git repository.

 

 

 

 

 

Hardware results:

 

Using our PCB, we were able to generate high current, large voltage sine waves with arbitrary phase differences. This would have been enough to power a small 3-phase induction motor or a single phase induction motor with small startup torque. Below are oscilloscope captures of three-phase AC output and 180 degree offset sine waves for running the single phase motor (captured while driving 10 ohm resistive loads).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

However, the motors we had to work with were a 15kW 3-phase induction motor (donated to EE155 by Paul Karplus) and a 1/2 hp single phase, capacitor start induction motor (Pentek Model P43B0005A1) . Our board isn't capable of dealing with the high power required to run the large 3-phase motor, and unfortunately, we were unable to provide the necessary kick to start to the single phase motor. We measured the current required to run the capacitive start motor using a variac transformer to supply power to the motor and a a current probe. With the starter coil engaged, the motor drew peaks of nearly 30A, and peaks of about 7 amps once the rotor began spinning and the starter coil was disengaged. 30A is more than even two of the high-current Mastech supplies paralleled together can suppl. Even with a 1000uF capacitor on the high voltage supply to supply startup current, it was not enough to get the rotor spinning fast enough to allow the motor to run when the starter coil was disengaged. 

 

Pictured below are the voltage and current waveforms applied to the single phase motor by our circuitry. The voltage is measured between the input and return, which are driven by 180 degree offset sine waves. The applied voltage is 90V pk-pk, with 35A pk-pk current.