Control of distributed generation systems-Part I: Voltages and currents control

This paper discusses a digital control strategy for three-phase pulse-width modulation voltage inverters used in a single stand-alone ac distributed generation system. The proposed control strategy utilizes the perfect robust servomechanism problem control theory to allow elimination of specified unwanted voltage harmonics from the output voltages under severe nonlinear load and to achieve fast recovery performance on load transient. This technique is combined with a discrete sliding mode current controller that provides fast current limiting capability necessary under overload or short circuit conditions. The proposed control strategy has been implemented on a digital signal processor system and experimentally tested on an 80-kVA prototype unit. The results showed the effectiveness of the proposed control algorithm.

[1]  W. Wonham,et al.  The internal model principle for linear multivariable regulators , 1975 .

[2]  P. Ziogas.  The Delta Modulation Technique in Static PWM Inverters , 1981, IEEE Transactions on Industry Applications.

[3]  Sarosh N. Talukdar,et al.  Characterization of Programmed-Waveform Pulsewidth Modulation , 1980, IEEE Transactions on Industry Applications.

[4]  Vadim I. Utkin,et al.  Sliding mode control in electromechanical systems , 1999 .

[5]  Bimal K. Bose,et al.  A High-Performance Pulsewidth Modulator for an Inverter-Fed Drive System Using a Microcomputer , 1983, IEEE Transactions on Industry Applications.

[6]  Richard G. Hoft,et al.  Generalized Techniques of Harmonic Elimination and Voltage Control in Thyristor Inverters: Part I--Harmonic Elimination , 1973 .

[7]  S. Hara,et al.  Repetitive control system: a new type servo system for periodic exogenous signals , 1988 .

[8]  Andress Kernick,et al.  Static Inverter With Synchronous Output Waveform Synthesized By Time-Optimal-Response Feedback , 1977, IEEE Transactions on Industrial Electronics and Control Instrumentation.

[9]  Ying-Yu Tzou,et al.  Adaptive repetitive control of PWM inverters for very low THD AC-voltage regulation with unknown loads , 1999 .

[10]  Phoivos D. Ziogas.  Optimum Voltage and Harmonic Control PWM Techniques for Three-Phase Static UPS Systems , 1980, IEEE Transactions on Industry Applications.

[11]  Michio Nakano,et al.  High Accuracy Control of a Proton Synchrotron Magnet Power Supply , 1981 .

[12]  Atsuo Kawamura,et al.  Deadbeat controlled PWM inverter with parameter estimation using only voltage sensor , 1988, 1986 17th Annual IEEE Power Electronics Specialists Conference.

[13]  Giuseppe S. Buja.  Optimum Output Waveforms in PWM Inverters , 1980, IEEE Transactions on Industry Applications.

[14]  R. Hoft,et al.  Generalized Techniques of Harmonic Elimination and Voltage Control in Thyristor Inverters: Part II --- Voltage Control Techniques , 1974 .

[15]  Atsuo Kawamura,et al.  Dead beat microprocessor control of PWM inverter for sinusoidal output waveform synthesis , 1985 .

[16]  E. Davison,et al.  Perfect control of the robust servomechanism problem , 1987 .

[17]  Atsuo Kawamura,et al.  Waveform compensation of PWM inverter with cyclic fluctuating loads , 1988 .

[18]  A. Schonung,et al.  Static Frequency Changers with "Subharmonic" Control in Conjunction with Reversible Variable-Speed A.C.Drives , 1964 .

[19]  Atsuo Kawamura,et al.  Instantaneous Feedback Controlled PWM Inverter with Adaptive Hysteresis , 1984, IEEE Transactions on Industry Applications.

[20]  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.

[21]  F. G. Turnbull,et al.  Selected harmonic reduction in static D-C — A-C inverters , 1964, IEEE Transactions on Communication and Electronics.

[22]  D. L. Stechschulte,et al.  Static Inverter With Synchronous Output Waveform Synthesized By Time-Optimal-Response Feedback , 1977 .