Abstract
Applied tests on a real photovoltaic panel for a consolidated analysis require complex experiment setup and permanent availability of climatic conditions. This method is ineffective and can damage the PV system. As a result, PV emulators are highly requested in solar energy conversion and generation research, which rests essentially on a maximum power point tracking control algorithm (MPPT) and an adapting power stage as the DC-DC converter and PV inverter. The PV emulator guarantees a controllable light source environment to act as a real PV system in the laboratory. This paper deals with the study and development of an experimental PV emulator based on logarithmic approximation of the ideal single diode model (ISDM), which is implemented using analog electronic components. Mainly, the PV model, the controller, and the power stages, forming the PV emulator, are described. This simple, low-cost, and efficient device is considered as a nonlinear power supply template replacing the real PV system for any operating point irrespective of the environmental condition changes. The emulated current-voltage and power-voltage curves are validated via resistive load and batteries. Then, the performance of the proposed PV emulator is evaluated by its ability to recharge properly two 12V 7 Ah batteries.
Highlights
To reproduce I = f(V) and P = f(V) characteristics of a PV system in the laboratory for a reliable, rapid, and efficient PV energy conversion systems analysis and improvement, two methods are applied
Whatever the the elaborate elaborate model, model, the the goal goal to to be be important achieved is to have data in all operating conditions, which is derived from the emulator that achieved is to have data in all operating conditions, which is derived from the PV emulator that closely mimics realreal solar cells
An initial irradiance level was set to the solar irradiance at Conditions Test (STC) value and we have considered both loads as the variable resistors and batteries
Summary
A PV emulator system represents a reconfigurable DC power source to reproduce the output electrical characteristics of different PV module regardless of external atmospheric conditions so that the actual PV power system operation can be validated precisely. This tool offers a convenient ambient condition control for steady state and transient responses, which allow simple, rapid, and accurate experiments and tests for the PV energy conversion system. Technologies related to the electric field, researchers have improved the projected studies on PV the PV emulator, as shown, includes three parts called the PV model, the control strategy, emulators.
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