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Rapid prototyping of photovoltaic emulator using buck converter based on fast convergence resistance feedback method

Ayop, Razman and Chee, Wei Tan (2019) Rapid prototyping of photovoltaic emulator using buck converter based on fast convergence resistance feedback method. IEEE Transactions on Power Electronics, 34 (9). pp. 8715-8723. ISSN 0885-8993

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Official URL: http://dx.doi.org/10.1109/TPEL.2018.2886927

Abstract

Using a photovoltaic (PV) emulator (PVE) simplifies the testing of the PV generation system. However, conventional controllers used for PVEs suffer from oscillating output voltage, requiring a high number of iterations, or being too complex to be implemented. This paper proposes a controller based on a resistance feedback control strategy that produces a stable and fast converging operating point for the PVE. The resistance feedback control strategy requires a new type of PV model, which is the current-resistance (I-R) PV model. This model is computed using a binary search method at a fast convergence rate. It is combined with a closed-loop buck converter using a proportional-integral controller to form the resistance feedback control strategy. The PVE's controller is implemented into dSPACE ds1104 hardware platform for experimental validation. The acquired experimental results show that the proposed PVE is able to follow the current-voltage characteristic of the PV module accurately. In addition, the PVE's efficiency is more than 90% under maximum power point operation. The transient response of the proposed PVE is similar to the PV panel during irradiance changes.

Item Type:Article
Uncontrolled Keywords:PV model, resistance feedback
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:87914
Deposited By: Yanti Mohd Shah
Deposited On:30 Nov 2020 13:36
Last Modified:30 Nov 2020 13:36

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