Title :
Virtual-flux-based direct power control of three-phase PWM rectifiers
Author :
Malinowski, Mariusz ; Kazmierkowski, Marian P. ; Hansen, Steffan ; Blaabjerg, Frede ; Marques, G.D.
Author_Institution :
Inst. of Control & Ind. Electron., Warsaw Univ. of Technol., Poland
Abstract :
In this paper, direct power control (DPC) of three-phase pulsewidth-modulated rectifiers without line voltage sensors is presented. The new system is based on virtual flux (VF) estimation. Theoretical principles of this method are discussed. The steady-state and dynamic behavior of VF-DPC are presented that illustrate the operation and performance of the proposed system compared to a conventional DPC method. Both strategies are also investigated under unbalance and predistorted grid. It is shown that the VF-DPC exhibits several advantages, particularly providing sinusoidal line current when the supply voltage is not ideal. Test results show the excellent performance of the proposed system
Keywords :
PWM power convertors; magnetic flux; power control; rectifying circuits; dynamic behavior; instantaneous active power; instantaneous reactive power; predistorted grid; sinusoidal line current; steady-state behavior; three-phase PWM rectifiers; three-phase pulsewidth-modulated rectifiers; virtual flux estimation; virtual-flux-based direct power control; voltage sensorless operation; Current control; Frequency estimation; Industry Applications Society; Power control; Pulse width modulation; Pulse width modulation converters; Reactive power; Rectifiers; Space vector pulse width modulation; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
