a method generates space vector modulation signals for a multi - level power inverter using space vector pulse width modulation . a reference voltage and a triangle region for the reference voltage are determined . vertices for a space vector that is closest to the reference voltage is outputted . then , the vertices are adjusted so that the space vector is in a valid region of the triangle region . lastly , the space vector modulation signals a , b , and c corresponding to the space vector in the valid region are outputed .