Observer for DC voltages in a cascaded H-bridge multilevel STATCOM

Using an instantaneous model of a cascade H-bridge multilevel-based STATCOM, an observer for estimating the DC capacitor voltages of the multilevel inverter is presented. This design can be used to eliminate the voltage sensors in each H-bridge of this device. Simulation results are presented in order to validate the performance of the proposed observer applied to a cascade H-bridge multilevel-based STATCOM.

[1]  Thierry Meynard,et al.  Multi-Level Choppers for High Voltage Applications , 1992 .

[2]  G. Besançon.  Remarks on nonlinear adaptive observer design , 2000 .

[3]  A. Krener,et al.  Nonlinear controllability and observability , 1977 .

[4]  Hirofumi Akagi,et al.  A New Neutral-Point-Clamped PWM Inverter , 1981, IEEE Transactions on Industry Applications.

[5]  D. J. Adams,et al.  A power line conditioner using cascade multilevel inverters for distribution systems , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[6]  Fang Zheng Peng,et al.  Dynamic performance and control of a static VAr generator using cascade multilevel inverters , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[7]  Hirofumi Akagi,et al.  Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components , 1984, IEEE Transactions on Industry Applications.

[8]  Noureddine Manamanni,et al.  SLIDING MODE OBSERVER FOR TRIANGULAR INPUT HYBRID SYSTEM , 2005 .

[9]  Thomas A. Lipo,et al.  Comparison of multilevel inverters for static VAr compensation , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[10]  Fang Zheng Peng,et al.  A multilevel voltage-source inverter with separate DC sources for static VAr generation , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[11]  Fang Zheng Peng,et al.  Multilevel converters-a new breed of power converters , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[12]  P. Bhagwat,et al.  Generalized Structure of a Multilevel PWM Inverter , 1983, IEEE Transactions on Industry Applications.

[13]  G. Besancon,et al.  On adaptive observers for state affine systems and application to synchronous machines , 2003, 42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475).

[14]  Brendan Peter McGrath,et al.  Multicarrier PWM strategies for multilevel inverters , 2002, IEEE Trans. Ind. Electron..

[15]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[16]  H. Nijmeijer,et al.  New directions in nonlinear observer design , 1999 .