A novel method for dead-time compensation based on SVPWM

As for a vector control system of permanent magnet synchronous motor, this paper analyzes the influence of dead-time on output voltage in detail, and discusses the relationship between the position of voltage vector and the direction of three-phase current in a space-vector figure. In addition, a method that divides three-phase current into six sectors and a control strategy that compensates only one phase voltage in every sector are proposed in the paper. At last, experiments which are uncompensated and compensated in different frequency are carrier out with a TMS320F240 chip, and the results verify this method has a good compensation effect.