Digital adaptive control of a three phase dynamic power filter under unsymmetrical loading conditions

A digital adaptive current controller for implementation on a three-phase voltage source inverter is proposed for a demonstration 40 kVA dynamic power filter (DPF). The digital dynamic compensator controller is based on a TMS320E15 digital signal processor (DSP), which will be implemented in a hybrid power compensator of +or-100 kVA power rating. The hybrid power compensator consists of a three-phase thyristor controlled reactive (TCR) source, combined with the three-phase 40 kVA voltage-fed system. The characteristics of the digital current controller for the DPF are introduced and described. Simulation results of this digital control technique on a single-phase DPF are shown and compared with practical results obtained from a low-power (+or-300 VA) single-phase DPF.<<ETX>>

[1]  Donald W. Novotny,et al.  Current Control of VSI-PWM Inverters , 1985, IEEE Transactions on Industry Applications.

[2]  J.D. Van Wyk,et al.  A new control philosophy for power electronic converters as fictitious power compensators , 1988, PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference.

[3]  T. M. Jahns,et al.  Discrete pulse modulation strategies for high-frequency inverter systems , 1989 .

[4]  J.H.R. Enslin,et al.  Real-time, dynamic control of dynamic power filters in supplies with high contamination , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[5]  T.G. Habetler,et al.  Performance characterization of a new discrete pulse modulated current regulator , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[6]  G. Dinkel,et al.  Kompensator für Oberschwingungen und Blindleistung , 1987 .

[7]  H. van der Broeck,et al.  Analysis and Realization of a Pulse Width Modulator Based on Voltage Space Vectors , 1986, 1986 Annual Meeting Industry Applications Society.

[8]  J.H.R. Enslin,et al.  Adaptive control of a TCR for hybrid compensators using the energy distribution optimization approach , 1991, PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference.

[9]  Hoang Le-Huy,et al.  An adaptive current control scheme for PWM synchronous motor drives: analysis and simulation , 1989 .