Patent ID: 6819078
Filing Date: 2004-11-16
Classification: H02M,H02P

Abstract:
A space vector pulse-width modulator (SVPWM) comprising:a precalculation module which accepts Ua and Ub modulation indexes and in response thereto, outputs modified Ua and Ub information; a sector finder having a U module which receives the modified Ua information and outputs a U sector; and a Z module which receives the U sector and the modified Ub information and outputs a Z sector; said U sector and said Z sector being 2-phase control signals for implementing 2-phase modulation; and for 3-phase modulation, said SVPWM further comprising: an active vectors section which receives said modified Ua and Ub information and said U sector, and which calculates active vectors for 3-phase modulation; a zero vector selector which receives said Z sector and calculates zero vectors for 3-phase modulation; and a PWM counter block which receives said active vectors and zero vectors and outputs 3-phase control signals for implementing 3-phase modulation.