Open AccessSimple and fast computation photovoltaic emulator using shift controller
Author(s) -
Ayop Razman,
Wei Tan Chee,
Lawan Bukar Abba
Publication year - 2020
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2019.1504
Subject(s) - control theory (sociology) , fuzzy logic , controller (irrigation) , photovoltaic system , pid controller , dspace , transient (computer programming) , matlab , computation , open loop controller , computer science , transient response , control engineering , engineering , algorithm , closed loop , control (management) , temperature control , artificial intelligence , electrical engineering , agronomy , biology , operating system
Photovoltaic (PV) emulator (PVE) is a non‐linear power supply that produces a similar output to that of the PV module. It requires a closed‐loop controller such as the proportional–integral (PI) and fuzzy logic controllers to operate properly. The PI controller has a low‐computational burden and is not robust since the transient response varies under different load conditions. Although the fuzzy logic controller is robust, it requires high‐computation capability. This study proposed an alternative approach called the shift controller for the PVE to easily compute and maintain a fast transient response under various load conditions. The performance of the proposed shift controller for the PVE is compared with the performance of the PVEs using the PI and fuzzy logic controllers, respectively. The controllers are simulated using MATLAB/Simulink and implemented using dSPACE ds1104 for experimental validation. The results show that the proposed shift controller computes up to 18 times faster than the fuzzy logic controller. The proposed controller also responds faster to load change than the PI controller.