Control of DSTATCOM using adjustable step least mean square control algorithm

Author

Arya, Sabha Raj ; Singh, Bawa ; Chandra, Aniruddha ; AI-Haddad, Kamal

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Delhi, New Delhi, India

fYear

2012

fDate

19-22 Dec. 2012

Firstpage

1

Lastpage

6

Abstract

A DSTATCOM (Distribution Static Compensator) using an adjustable step least mean square (LMS) control algorithm is presented for power quality improvement under linear/nonlinear loads. Adjustable step LMS control algorithm is used for calculation of reference signal source currents in terms of average weighted active and reactive components/elements. It reduces the effect of nonlinearity by updating the value of step size. It is able to solve the problem at fast convergence rate and steady state error compared to traditional LMS algorithm. This control algorithm is implemented using a DSP for improvement of power quality. Discrete simulation and test results show the satisfactory performance of adjustable step control algorithm under time varying loads.

Keywords

digital signal processing chips; least mean squares methods; power supply quality; static VAr compensators; DSP; DSTATCOM control; LMS algorithm; adjustable step LMS control; adjustable step least mean square control algorithm; average weighted active components; average weighted active reactive components; average weighted reactive components; average weighted reactive elements; discrete simulation; distribution static compensator; linear-nonlinear loads; power quality; reference signal source currents; time varying loads; Algorithm design and analysis; Harmonic analysis; Least squares approximation; Power harmonic filters; Signal processing algorithms; Voltage control; AC bus; Adjustable step size; DSTATCOM; LMS control algorithm; Load Balancing;

fLanguage

English

Publisher

ieee

Conference_Titel

Power India Conference, 2012 IEEE Fifth

Conference_Location

Murthal

Print_ISBN

978-1-4673-0763-5

Type

conf

DOI

10.1109/PowerI.2012.6479508

Filename

6479508