PROPOSED POWER FACTOR CORRECTION CIRCUIT BASED ON THE SINGLE-ENDED PRIMARY-INDUCTOR CONVERTER CONTROLLED BY SLIDING MODE CONTROL STRATEGY USED IN AN ELECTRIC VEHICLE CHARGING STATION
Keywords:Electric vehicle, Single-ended primary-inductor converter (SEPIC), Sliding mode control, Power factor correction, Real time lab platform
The quality of electrical energy has become a strategic issue for all economic actors. Its efficiency is reduced due to multiple disturbances and harmonic injections caused by the different connected loads. The electric vehicle (EV) takes an important place among these loads that take their energy from the grid through charging stations. In this paper, a solution to improve the power factor and reduce the harmonic injection is proposed by introducing a power factor correction (PFC) circuit in the charging stations. It is realized by a single-ended primary-inductor converter (SEPIC) that allows isolation between the load and the electrical network. In addition, it offers hardware minimization since it operates simultaneously in boost and buck without polarity reversal. A control technique based on the use of the sliding mode control (SMC) technique is proposed for harmonic reduction and power factor correction. SMC is used to maintain the output voltage of the SEPIC converter at its desired value, improve the power factor (PF) and reduce the total harmonic distortion (THD). A software-in-the-loop (SIL) simulation using a real-time simulation platform (RT LAB) is performed to confirm the system performance.
(1) D. Ziane, S. Aissou, A. Azib, T. Rekioua, Performance test of the control strategy applied to the electric vehicle, in the case of FWD and 4WD. Int J Hydrogen Energy, 39, pp. 21259-21264 (2014).
(2) A. Azib, D. Ziane, T. Rekioua, Ensure continuity of operation of an electric vehicle under fault condition in converter, International Journal of Hydrogen Energy, 41, pp. 9066-9074 (2016).
(3). S. Aiswariya, R. Dhanasekaran, Simulation and analysis of a single-phase ac-dc boost PFC converter with a passive snubber for power quality improvement, IEEE International Conference on Advanced Communication Control and Computing Technologies (2014).
(4) K.I. Hwu, C.-L. Tsai, K.-F. Lin, A simple passive ZCS circuit for PFC converter, Twenty, Third Annual IEEE Applied Power Electronics Conference and Exposition (2008).
(5) D.D.C Lu, S.K Ki, Light-load efficiency improvement in buck-derived single-stage single-switch PFC converters, IEEE Transactions on power electronics, 28, 5, pp. 2105 – 2110 ( 2013).
(6) S. Singh, B. Singh, PFC buck converter fed PMBLDCM drive for low power applications, IEEE Fifth Power India Conference (2012).
(7) R.J. Ganesh, S. Kodeeswaran, M. Kavitha, T. Ramkumar, Performance analysis of piezoelectric energy harvesting system employing bridgeless power factor correction boost rectifier, Materials Today: Proceeding, 45, 25, pp. 486-494 (2021).
(8) P.R. Mohanty, A.K. Panda, Dh. Das, An active PFC boost converter topology for power factor correction, Annual IEEE India Conference (INDICON), 2015.
(9) O. Turksoy, U. Yilmaz, A. Teke, Efﬁcient ac-dc power factor corrected boost converter design for battery charger in electric vehicles, Energy, 221, pp. 119765 (2021).
(10) S. Ketsingsoi and Y. Kumsuwan, An off-line battery charger based on buck-boost power factor correction converter for plug-in electric vehicles, 11th Eco-Energy and Materials Science and Engineering (11th EMSES), Energy Procedia, 56, pp. 659– 666 (2014).
(11) B. Wang, J. Xu, D. Xu, Z. Yan, Implementation of an estimator-based adaptive sliding mode control strategy for a boost converter-based battery/supercapacitor hybrid energy storage system in electric vehicles, Energy Conversion and Management, 151, pp. 562-572 (2017).
(12) B. Anton, A. Florescu, S. G. Rosu, Standalone analog active cell-balancing circuit for automotive battery management systems, Revue. Roumaine Science Techniques.– Électrotechnique. et Énergétique, 63, 3, pp. 306–313, Bucarest, 2018.
(13) A. Mourad, G. Keltoum, Power system stabilizer based on terminal sliding mode control, Revue. Roumaine Science Techniques.– Électrotechnique. et Énergétique, 62, 1, pp. 98–102, Bucarest (2017).
(14) V. Subramanian, S. Manimaran, Implementation of a sliding mode controller for single ended primary inductor converter, Journal of Power Electronics, 15, 1, pp. 39-53 (2015).
(15) O.L. Santo et al.., Sliding mode control of the isolated bridgeless SEPIC High Power Factor Rectifier Interfacing an AC Source with a LVDC Distribution Bus, Energies, 12, pp. 3463 (2019).
(16) S. Ma et al., A Sliding mode control method for sepic power factor correction converter, IPEMC2020-ECCE Asia.