Patent ID: 7791304
Filing Date: 2010-09-07
Classification: H02M

Abstract:
1. A method for determining duty-cycles of respective pulse width modulated (PWM), space vector modulated (SVM) control signals of an inverter with half-bridge switching stages, each half-bridge switching stage controlling a multi-phase motor including a plurality of windings to apply thereto a respective sinusoidal voltage of a period equal to an SVM control period, comprising: storing values of the duty-cycles established as a function of a position of a rotor of the multi-phase motor in at least one look-up table; determining for each SVM control period an angle of a phasor that represents a multiple of sinusoidal voltages to be applied to the multi-phase motor; and determining the duty-cycles as a function of the angle to apply the respective sinusoidal voltages of the multiple to the respective windings of the multi-phase motor; wherein storing comprises storing in the at least one look-up table values of two pre-established waveforms relative to at least one of the duty-cycles as a function of the angle in at least two angular sectors of 60° degrees each by at least