Authors: Ouarda Heddad; Lahcene Ziet; Tewfik Bekkouche
Addresses: Department of Electronics, Faculty of Technology, LEPCI Laboratory setif-1 University, 19000 Setif, Algeria ' Department of Electronics, Faculty of Technology, LEPCI Laboratory setif-1 University, 19000 Setif, Algeria ' Department of Electro-Mechanics, Faculty of Technology, ETA Laboratory, Bachir El Ibrahim University, 34030 BordjBouArreridj, Algeria
Abstract: In this study, we propose a simple pulse-width modulator based on integral sliding mode controller (PWM-SISMC) to deal with the steady state error (SSE) of a boost converter. The PWM-DISMC is used for the first time to compensate for the SSE of a proton exchange membrane fuel cell (PEM-FC). The PWM-DISMC tracks the reference output of the FC system composed of a 7 kW FC supplying a resistive variable load (24 Ω to 96 Ω) and a DC bus voltage (48 V) using a boost converter. A control signal is then generated and used to adjust the pulse width of the PWM output signal that drives the boost converter switch. The PWM-DISMC is compared to the conventional PWM-SISM using the SimPowerSystems models implemented by MATLAB/Simulink. simulation results show that the proposed PWM-DISMC has better performances, regarding the steady state error of the boost converter, than the performances of the PWM-SISM.
Keywords: pulse width modulation; PWM; fuel cell; FC; polymer exchange membrane; PEM; power converter; control strategy; sliding mode; double integral surface; steady state error; pressure hydrogen supply; MATLAB/Simulink.
International Journal of Modelling, Identification and Control, 2021 Vol.38 No.1, pp.46 - 58
Received: 05 Oct 2020
Accepted: 26 Mar 2021
Published online: 04 Apr 2022 *