Decoupled Reactive power Compensation Using Neural Network Based control scheme

It is proposed to decouple three phase load reactive power in fundamental and harmonic power components and then compensate these using a combination of conventional shunt and parallel hybrid active filter. This approach results in use of low power rated PWM converters and offers many other advantages as compared to conventional shunt compensation. A simple neural network assisted scheme for decomposing of three phase current or voltage waveforms under unbalanced and non-sinusoidal conditions has also been proposed. Detailed mathematical model of decomposing algorithm and its real time implementation on DSP has been presented. Experimental results obtained on a laboratory model under steady state and dynamic conditions under different operating conditions have been analyzed and presented to demonstrate the effectiveness of proposed decoupled reactive power compensation scheme

[1]  Po-Tai Cheng,et al.  Hybrid solutions for improving passive filter performance in high power applications , 1996, Proceedings of Applied Power Electronics Conference. APEC '96.

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

[3]  N. Mohan,et al.  A comparative evaluation of harmonic reduction techniques in three-phase utility interface of power electronic loads , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[4]  G. K. Dubey,et al.  New high-power low-distortion synchronous-link-converter VAr compensator , 1999 .

[5]  Po-Tai Cheng,et al.  Line harmonics reduction in high-power systems using square-wave inverters-based dominant harmonic active filter , 1999 .

[6]  Prasad Enjeti,et al.  A new hybrid active power filter (APF) topology , 2002 .

[7]  H. Akagi,et al.  A practical approach to harmonic compensation in power systems-series connection of passive and active filters , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[8]  S. S. Venkata,et al.  The use of decoupled converters to optimize the power electronics of shunt and series AC system controllers , 1997 .

[9]  M. M. A. Salama,et al.  Modular Active Power-Line Conditioner , 2001, IEEE Power Engineering Review.

[10]  Po-Tai Cheng,et al.  Line harmonics reduction in high power systems using square-wave inverters , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[11]  Hirofumi Akagi,et al.  The unified power quality conditioner: the integration of series- and shunt-active filters , 1998 .

[12]  L. Czarnecki.  Orthogonal decomposition of the currents in a 3-phase nonlinear asymmetrical circuit with a nonsinusoidal voltage source , 1988 .

[13]  Kamal Al-Haddad,et al.  A review of active filters for power quality improvement , 1999, IEEE Trans. Ind. Electron..

[14]  P. Mehta,et al.  Active power filters: a review , 2000 .

[15]  Po-Tai Cheng,et al.  Hybrid solutions for improving passive filter performance in high power applications , 1997 .

[16]  Danijel Voncina,et al.  Synchronization of active power filter current reference to the network , 1999, IEEE Trans. Ind. Electron..

[17]  Sanjib Kumar Panda,et al.  Fast estimation of voltage and current phasors in power networks using an adaptive neural network , 1997 .

[18]  J. M. Pacas,et al.  A Novel 3-Phase Hybrid Harmonic and Reactive Power Compensator , 2001 .

[19]  M. Depenbrock,et al.  The FBD-Method, A Generally Applicable Tool For Analyzing Power Relations , 1992, ICHPS V International Conference on Harmonics in Power Systems..

[20]  Peter Wolfs,et al.  Systematic identification and review of hybrid active filter topologies , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[21]  Francis P. Dawson,et al.  New synchronization method for thyristor power converters to weak AC-systems , 1993, IEEE Trans. Ind. Electron..

[22]  J. R. Vazquez,et al.  Active power filter control using neural network technologies , 2003 .