Nonlinear integral sliding mode control design of photovoltaic pumping system: Real time implementation

Asma Chihi; Hechmi Ben Azza; Mohamed Jemli; Anis Sellami

doi:10.1016/j.isatra.2017.06.023

Nonlinear integral sliding mode control design of photovoltaic pumping system: Real time implementation

ISA Trans. 2017 Sep:70:475-485. doi: 10.1016/j.isatra.2017.06.023. Epub 2017 Jul 6.

Authors

Asma Chihi¹, Hechmi Ben Azza², Mohamed Jemli³, Anis Sellami⁴

Affiliations

¹ Tunis University, ENSIT, Electrical Engineering Department, Laboratory for the Engineering of Industrial Systems and Renewable Energies, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia. Electronic address: Asma.chihi@live.Fr.
² Tunis University, ENSIT, Electrical Engineering Department, Laboratory for the Engineering of Industrial Systems and Renewable Energies, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia. Electronic address: benazzahechmi@yahoo.com.
³ Tunis University, ENSIT, Electrical Engineering Department, Laboratory for the Engineering of Industrial Systems and Renewable Energies, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia. Electronic address: mohamed.jemli@ensit.rnu.tn.
⁴ Tunis University, ENSIT, Electrical Engineering Department, Laboratory for the Engineering of Industrial Systems and Renewable Energies, 5 Taha Hussein St., BP 56, Tunis 1008, Tunisia. Electronic address: anis.sellami@esstt.rnu.tn.

PMID: 28688618
DOI: 10.1016/j.isatra.2017.06.023

Abstract

The aim of this paper is to provide high performance control of pumping system. The proposed method is designed by an indirect field oriented control based on Sliding Mode (SM) technique. The first contribution of this work is to design modified switching surfaces which presented by adding an integral action to the considered controlled variables. Then, in order to prevent the chattering phenomenon, modified nonlinear component is developed. The SM concept and a Lyapunov function are combined to compute the Sliding Mode Control (SMC) gains. Besides, the motor performance is validated by numeric simulations and real time implementation using a dSpace system with DS1104 controller board. Also, to show the effectiveness of the proposed approach, the obtained results are compared with other techniques such as conventional PI, Proportional Sliding Mode (PSM) and backstepping controls.

Keywords: Induction motor; Pumping system; Robustness; Sliding switching surface; Uncertainties; dSpace controller board.