Simulation study of virtual flux based direct power control for three-phase PWM rectifiers

In this paper, direct power control (DPC) of three-phase PWM rectifiers without line voltage sensors is presented. The new system is based on virtual flux (VF) estimation. Theoretical principle of this method is discussed. The steady state and dynamic behaviour 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 pre-distorted grid. It is shown that VF-DPC exhibits several advantages, particularly in providing sinusoidal line current when the supply voltage is not ideal. Some test results show the excellent performances of the proposed system.

[1]  Boon Teck Ooi,et al.  A Three-Phase Controlled-Current PWM Converter with Leading Power Factor , 1987, IEEE Transactions on Industry Applications.

[2]  Jorge L. Duarte,et al.  Reference frames fit for controlling PWM rectifiers , 1999, IEEE Trans. Ind. Electron..

[3]  Toshihiko Noguchi,et al.  Direct power control of PWM converter without power source voltage sensors , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[4]  Jorge L. Duarte,et al.  A unity power factor converter without current measurement , 1995 .

[5]  Tokuo Ohnishi,et al.  Three phase PWM converter/inverter by means of instantaneous active and reactive power control , 1991, Proceedings IECON '91: 1991 International Conference on Industrial Electronics, Control and Instrumentation.

[6]  Mariusz Malinowski,et al.  Virtual flux based direct power control of three-phase PWM rectifiers , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).