Next Article in Journal
Novel Yeast Strains for the Efficient Saccharification and Fermentation of Starchy By-Products to Bioethanol
Previous Article in Journal
Minute-Scale Forecasting of Wind Power—Results from the Collaborative Workshop of IEA Wind Task 32 and 36
Open AccessArticle

Non-Linear Control for Variable Resistive Bridge Type Fault Current Limiter in AC-DC Systems

1
Department of Electrical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
2
Department of Electrical & Electronic Engineering, International Islamic University Chittagong, Chittagong 4318, Bangladesh
*
Author to whom correspondence should be addressed.
Energies 2019, 12(4), 713; https://doi.org/10.3390/en12040713
Received: 15 January 2019 / Revised: 7 February 2019 / Accepted: 10 February 2019 / Published: 22 February 2019
(This article belongs to the Section Electrical Power and Energy System)
This paper proposes a non-linear control-based variable resistive bridge type fault current limiter (VR-BFCL) as a prospective solution to ease the effect of disturbances on voltage source converter-based high voltage DC (VSC-HVDC) systems. A non-linear controller for VR-BFCL has been developed to insert a variable optimum resistance during the inception of system disturbances in order to limit the fault current. The non-linear controller takes the amount of DC link voltage deviation as its input and provides variable duty to generate a variable effective resistance during faults. The VSC-HVDC system’s real and reactive power controllers have been developed based on a current control loop where direct axis and quadrature axis currents are used to control the active and reactive power, respectively. The efficacy of the proposed non-linear control-based VR-BFCL solution has been proved with balanced as well as unbalanced faults. The results confirm that the oscillations in active power and DC link voltage have been significantly reduced by limiting the fault current through the insertion of an optimum effective resistance with the proposed control technique. The real time digital simulator (RTDS) has been used to implement the proposed approach. The performance of the proposed non-linear control based VR-BFCL is compared with that of traditional fixed duty control. View Full-Text
Keywords: non-linear control; variable resistive bridge type fault current limiter (VR-BFCL); voltage source converter high voltage DC (VSC-HVDC); transient stability; voltage fluctuation non-linear control; variable resistive bridge type fault current limiter (VR-BFCL); voltage source converter high voltage DC (VSC-HVDC); transient stability; voltage fluctuation
Show Figures

Figure 1

MDPI and ACS Style

Alam, M.S.; Abido, M.A.Y.; Hussein, A. .-D. Non-Linear Control for Variable Resistive Bridge Type Fault Current Limiter in AC-DC Systems. Energies 2019, 12, 713.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop