title: Control Strategies for the DAB Based PV Interface System.
abstract: This paper presents an interface system based on the Dual Active Bridge (DAB) converter for Photovoltaic (PV) arrays. Two control strategies are proposed for the DAB converter to harvest the maximum power from the PV array. The first strategy is based on a simple PI controller to regulate the terminal PV voltage through the phase shift angle of the DAB converter. The Perturb and Observe (P&O) Maximum Power Point Tracking (MPPT) technique is utilized to set the reference of the PV terminal voltage. The second strategy presented in this paper employs the Artificial Neural Network (ANN) to directly set the phase shift angle of the DAB converter that results in harvesting maximum power. This feed-forward strategy overcomes the stability issues of the feedback strategy. The proposed PV interface systems are modeled and simulated using MATLAB/SIMULINK and the EMTDC/PSCAD software packages. The simulation results reveal accurate and fast response of the proposed systems. The dynamic performance of the proposed feed-forward strategy outdoes that of the feedback strategy in terms of accuracy and response time. Moreover, an experimental prototype is built to test and validate the proposed PV interface system.
authors: Electrical and Control Department, College of Engineering & Technology , Arab Academy for Science, Technology & Maritime Transport, Cairo, Egypt.
authors: Hadi M
authors: HM
authors: El-Helw
authors: Electrical and Control Department, College of Engineering & Technology , Arab Academy for Science, Technology & Maritime Transport, Cairo, Egypt.
authors: Mohamed
authors: M
authors: Al-Hasheem
authors: Electrical Power and Machines Department, Faculty of Engineering, Ain shams University, Cairo, Egypt.
authors: Mostafa I
authors: MI
authors: Marei
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design / Q000295:instrumentation*; D011211:Electric Power Supplies; D004867:Equipment Design; D008962:Models, Theoretical