Forthcoming and Online First Articles

International Journal of Power Electronics

International Journal of Power Electronics (IJPElec)

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International Journal of Power Electronics (6 papers in press)

Regular Issues

  • Power oscillations cancellation strategy control of DFIG wind turbine during grid voltage dip   Order a copy of this article
    by Hakima Bahlouli, Mansouri Abdellah, Mohamed Bouhamida, Ali Eltamaly, Larbi Djillali 
    Abstract: Wind energy conversion systems (WECSs) based on doubly fed induction generators (DFIGs) are considered prominent technologies in wind energy systems. However, complying with grid code requirements necessitates maintaining wind turbine connectivity during network voltage dips. As the stator of the DFIG is directly linked to the grid, the generator stability is mostly affected by grid voltage dips. This paper proposes a direct power control strategy based on a reference generation approach to enhance the transient behaviour of DFIG during grid voltage dips and the subsequent recovery period. By eliminating the reliance on sequential decomposition methods and reducing the need for crowbar protection, the proposed control method achieves improved performance. The control method employs a sliding mode control strategy to expedite convergence time, while the control parameters are tuned using a fuzzy logic strategy to facilitate adaptation to external disturbances. Results demonstrate that the proposed strategy reduces rotor overcurrent, ensures a stable reactive power supply during voltage dips, and preserves the grid connection of the wind turbine.
    Keywords: second order sliding mode; LVRT capability; robust control; symmetrical dip; doubly fed induction generator; DFIG.
    DOI: 10.1504/IJPELEC.2024.10059706
  • Decoupled Power Flow Management in TAB-IBDC Converter for HESS Application in EV System   Order a copy of this article
    by PRATHAMESH JADHAV, B.B. Pimple 
    Abstract: In this paper, the application of triple-active-bridge (TAB)- isolated bidirectional DC-DC (IBDC) converter for hybrid energy storage system (HESS) in electric vehicle (EV) is considered. The power flow analysis of proposed converter configuration involves coupling of power flow between dc ports. The design procedure involves decoupled power flow management which provides accessibility for independent port power sharing. Simultaneously, it enhances the degree of freedom of control. The objective of this paper is to apply a power decoupling method by which peak power feed by ultra-capacitor of HESS should not affect the continuous steady battery current flow. The proposed method is verified through simulation study as well as experimental study.
    Keywords: TAB-IBDC converter; Triple active bridge; Isolated DC to DC converter; Dual active bridge (DAB); Quad active bridge (QAB); Multi-active bridge converter (MAB); phase-shift modulation.
    DOI: 10.1504/IJPELEC.2024.10060294
  • An improved efficiency novel five switch 1Ø grid-tied non-isolated inverter topology   Order a copy of this article
    by Rushikesh Shahakar, Kawita Thakur, Nutan Thakare 
    Abstract: In lieu of rapidly decreasing fossil fuels and also to tackle the upcoming energy crisis, the challenge lies in developing technology that can spur the use of renewable energy sources. This research evaluates a high-reliability and improved efficiency 1Ø transformerless grid-tied inverter topology with superjunction MOSFETs for photovoltaic modules. There is not any requirement for dead time at the grid zero crossing which enhances the output AC current and boosts converter efficiency. This improves system reliability by avoiding the shoot-through hazard. The proposed inverter uses segmented inductor topologys ability to prevent issues with reverse recovery loss for the power switches which in turn giving the converter system a high California Energy Commission or European Union efficiency. The mathematical analysis for proposed topology was validated using simulation studies in the MATLAB/Simulink framework. Also, losses and efficiencies were estimated.
    Keywords: photovoltaic; non-isolated; efficiency; power loss.
    DOI: 10.1504/IJPELEC.2024.10062636
  • Stability analysis of selective inter-harmonic compensation approach for light flicker mitigation   Order a copy of this article
    by Archana Sharma, Anshul Kumar Mishra, Bharat Singh Rajpurohit 
    Abstract: In this paper, stability analysis of an approach for Light Flicker (LF) mitigation is proposed. Electric Arc Furnace (EAF) is one of the major sources of injecting inter-harmonics and contributing LF. Mathematical analysis of EAF current is done to determine the frequency components majorly responsible for LF. Based on the outcomes conventional control algorithm of Static Synchronous Compensator (STATCOM) is modified to mitigate the inter-harmonics between frequency range 30Hz-70Hz, which gives advantage of capacity and capital savings. Although the proposed system reduces the flicker level Pst below 1 but it increases the system's order. In this work, stability analysis of proposed system with STATCOM is done to authenticate its practical implementation. Impedance-based small-signal modelling of the system is used to analyse the effect of current loop and voltage loop individually and together. The performance of system reveals that the proposed system is stable and can be used in practical applications.
    Keywords: electric arc furnace; EAF; inter-harmonics; light flicker; LF; power quality; PQ; static synchronous compensator; STATCOM.
    DOI: 10.1504/IJPELEC.2024.10063142
  • Walrus optimization algorithm based bidirectional long short term memory for DC microgrid protection   Order a copy of this article
    by Ramaprasanna Dalai, Sarat Chandra Swain 
    Abstract: Protection for direct current microgrids (MG) is critical, especially when they are subjected to renewable resources. When treated to several distributed generators, the MG experiences various renewable generator events, as previously reported by researchers. However, the MG also suffers due to the problem with load, cables and converters used in distributed systems. The existing deep learning algorithms failed to detect different faults with high accuracy; thus, the protection mechanism used violates safe operation. Hence, to detect and identify various events on MG with high accuracy, a fault detection and identification system concerning the deep learning algorithm is adopted. The voltage and current signal from the system is observed and used for detection using bidirectional long short-term memory (BLSTM). For enhanced accuracy and ease in detection performance, the voltage and current signal are processed by using Hilbert hung transform; based on the decomposed features, the BLSTM accurately identifies the faults in the system. As a result, the proposed model yielded improved performance with 98.71% precision, 99.89% F1-score, 99.93% recall and 99.99% accuracy under 17.36 ms of detection time.
    Keywords: microgrid; shunt arc fault; ShAF; series arc fault; SAF; line to line fault; LLF; pole to pole fault; PPF; Hilbert-Huang transform; HHT; fault detection; FD.
    DOI: 10.1504/IJPELEC.2024.10063212
  • A uni-stage battery charging system using an isolated inverted Cuk converter in bridgeless configuration   Order a copy of this article
    by Tanmay Shukla 
    Abstract: This article presents a bridgeless isolated and inverted Cuk (BLIIC) converter-based single-stage electrical vehicle battery charging system (SSEVBCS). The suggested BLIIC converter scheme has fewer components than other bridgeless Cuk converter schemes. The converter is garnished with input and output inductances which lessens supply current harmonics like Cuk converter. The advantages of BLIIC converter are eradication of one inductor and a diode which are generally used in bridgeless (BL) converter configurations. SSEVBCS system witnesses the eradication of a rectifier and a low pass filter that reduces the size and losses of the system. Discontinuous current conduction (DCC) mode operation lessens the sensor requirements in comparison to continuous current conduction (CCC) mode. The above benefits make the SSEVBCS system cheaper, more compact, and more efficient. The detailed stability analysis of BLIIC is also included in the paper. Prototype, as well as Simulink results, have been presented to validate the presented SSEVBCS.
    Keywords: bridgeless; DCC mode; BLIIC converter.
    DOI: 10.1504/IJPELEC.2024.10063393