Convergence analysis of an adaptive filter equipped with the sign-sign algorithm

1995 ◽  
Vol 40 (10) ◽  
pp. 1807-1811 ◽  
Author(s):  
E. Eweda
2010 ◽  
Author(s):  
Amrita Rai ◽  
Amit Kumar Kohli ◽  
R. B. Patel ◽  
B. P. Singh

1998 ◽  
Vol 69 (2) ◽  
pp. 157-162 ◽  
Author(s):  
Eweda Eweda ◽  
Waleed M Younis ◽  
Salwa H El-Ramly

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 197
Author(s):  
Arobinda Dash ◽  
Durgesh Prasad Bagarty ◽  
Prakash Kumar Hota ◽  
Manoj Kumar Sahu ◽  
Twinkle Hazra ◽  
...  

A control structure design of a three-phase three-leg four-wire grid-tied Distribution Static Synchronous Compensator (DSTATCOM) based on a combined-step-size real-coefficient improved proportionate affine projection sign algorithm (CSS-RIP-APSA) has been presented. The three-phase four-wire DSTATCOM is used for reactive power compensation along with harmonic current minimization. This strategy also helps in load balancing and neutral current compensation. The affine projection sign algorithm (APSA) is a member of the adaptive filter family, which has a slow convergence rate. The conventional adaptive filter deals with the trade-off between the convergence rate and the steady-state error. In the proposed algorithm, the RIP-APSA adaptive filter with two different step sizes has been designed to decrease the computational burden while achieving the advantages of a fast convergence rate and reduced steady-state error. The proposed controller also makes the inverter function a shunt compensator. The controller primarily evaluates the fundamental weight component of distorted load currents. The aim of the proposed system is to compensate for reactive power and to ensure unity power factor during the faulty conditions as well as for unbalancing grid conditions. The proposed control algorithm of the grid-tied DSTATCOM works effectively on the laboratory prototype as verified from the experimental results.


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