Predictive direct power control of three-phase boost rectifier

Abstract. In this paper, a new control scheme of an active boost rectifier has been presented. Proposed power control method uses a discrete-time model of the converter to predict future behaviour for all possible voltage vectors. The most effective vector is chosen for next sampling period by minimizing a cost function. Presented Predictive Direct Power Control (P-DPC) scheme has been compared with classical Switching Table based Direct Power Control (ST-DPC) method. Laboratory results shows that predictive control in relation to classical ST-DPC method works properly at low sampling frequency and owns better dynamic and steady state performance. Key words: active rectifier, direct power control, predictive control. 1