Shunt Active Power Filter Employing Robust Extended Complex Kalman Filter based Linear Quadratic Regulator Control Strategy for Power Quality Enhancement
Abstract
In this paper, a new reference current generation method is proposed for effective harmonics mitigation and reactive power compensation of three-phase shunt active power filter (SAPF) under grid perturbations. The proposed reference technique is specified as a self-regulator of dc-capacitor voltage. In operation, the proposed algorithm estimates the source reference current rapidly and adaptively through power system disruptions arising at source as well as load sides. The proposed technique employs the Robust Extended Complex Kalman filter (RECKF) algorithm to generate reference current, which confirms in phase action of SAPF with the functional power system, without being reliant upon any phase-locked loop (PLL) elements or proportional integral (PI) controller loop. As a consequence, an economical SAPF system can be designed. Moreover, a Linear Quadratic Regulator (LQR) is formulated using RECKF methodology for delivering stability and robustness in the SAPF system. The design model and efficacy of the proposed algorithm are fully studied and assessed in a laboratory prototype employing dSPACE1104 to justify feasibility. The encouraging outcomes obtained experimentally demonstrate the efficiency of the proposed approach under both steady and dynamic conditions of the power system.References
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reduction and voltage prole improvement. Alexan-
dria Engineering Journal, 57 (2), 755{765.
2.Patjoshi, R.K., and Mahapatra, K. (2017) Highperformance
unied power quality conditioner using
non-linear sliding mode and new switching dynamics
control strategy. IET Power Electronics, 10 (8),
863{874.
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A robust LQG servo control strategy of shuntactive
power lter for power quality enhancement.
IEEE Transactions on Power Electronics, 31 (4),
2860{2869.
4.Panigrahi, R., Subudhi, B., and Panda, P.C. (2014)
Model predictive-based shunt active power lter with
a new reference current estimation strategy. IET
Power Electronics, 8 (2), 221{233.
5.Patjoshi, R.K., and Mahapatra, K. (2016) Highperformance
unied power quality conditioner using
command generator tracker-based direct adaptive
control strategy. IET Power Electronics, 9 (6),
1267{1278.
6.Yavari, M., Edjtahed, S.H., and Taher, S.A. (2018)
A non-linear controller design for UPQC in distribution
systems. Alexandria engineering journal, 57 (4),
3387{3404.
7.Patjoshi, R.K., and Mahapatra, K. (2016) Resistive
optimization with enhanced PLL based nonlinear variable
gain fuzzy hysteresis control strategy for unied
power quality conditioner. International Journal of
Electrical Power & Energy Systems, 83, 352{363.
8.Popescu, M., Bitoleanu, A., and Suru, V. (2012)
A DSP-based implementation of the pq theory in active
power ltering under nonideal voltage conditions.
IEEE Transactions on Industrial Informatics, 9 (2),
880{889.
9.Patjoshi, R.K., and Mahapatra, K.K. (2013) Performance
comparison of direct and indirect current
control techniques applied to a sliding mode based
shunt active power lter. 2013 Annual IEEE India
Conference (INDICON), 1{5.
10.Kumar, R., Singh, B., Shahani, D.T., and Jain,
C. (2016) Dual-tree complex wavelet transform-based
control algorithm for power quality improvement in a
distribution system. IEEE transactions on industrial
electronics, 64 (1), 764{772.
11.Dirik, H., and Ozdemir, M. (2014) New extraction
method for active, reactive and individual harmonic
components from distorted current signal. IET
Generation, Transmission & Distribution, 8 (11),
1767{1777.
12.Huang, C.-H., Lee, C.-H., Shih, K.-J., and Wang,
Y.-J. (2010) A robust technique for frequency estimation
of distorted signals in power systems. IEEE
Transactions on Instrumentation and Measurement,
59 (8), 2026{2036.
13.Dash, P.K., Jena, R.K., Panda, G., and Routray,
A. (2000) An extended complex Kalman lter for frequency
measurement of distorted signals. IEEE Trans-
actions on Instrumentation and Measurement, 49 (4),
746{753.
14.Panigrahi, R., and Subudhi, B. (2016) Performance
Enhancement of Shunt Active Power Filter Hin
nity Control Strategy. IEEE Transactions on Power
Electronics, 32 (4), 2622{2630.
15.Panigrahi, R., Panda, P.C., and Subudhi, B.
(2014) A robust extended complex Kalman lter and
sliding-mode control based shunt active power lter.
Electric Power Components and Systems, 42 (5),
520{532.
16.Kwan, K.H., So, P.L., and Chu, Y.C. (2012) An
output regulation-based unied power quality conditioner
with Kalman lters. IEEE Transactions on In-
dustrial Electronics, 59 (11), 4248{4262.
17.Costanza, V., Rivadeneira, P.S., and Munera,
J.A.G. (2016) Numerical treatment of the boundedcontrol
LQR problem by updating the nal phase
value. IEEE Latin America Transactions, 14 (6),
2687{2692.
18.Bhawal, C., and Pal, D. (2019) Almost Every
Single-Input LQR Optimal Control Problem Admits
a PD Feedback Solution. IEEE Control Systems Let-
ters, 3 (2), 452{457.
Published
2020-05-02
How to Cite
PATJOSHI, Rajesh Kumar; PANIGRAHI, Rakhee.
Shunt Active Power Filter Employing Robust Extended Complex Kalman Filter based Linear Quadratic Regulator Control Strategy for Power Quality Enhancement.
Journal of Power Technologies, [S.l.], v. 100, n. 2, p. 120-128, may 2020.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1490>. Date accessed: 10 dec. 2024.
Issue
Section
Electrical Engineering
Keywords
Shunt active power filter, Robust extended complex Kalman filter, Linear quadratic regulator, grid perturbations.
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