Using batteries for energy storage in the photovoltaic system has become an increasingly promising solution to improve energy quality: current and voltage. For this purpose, the energy management of batteries for regulating the charge level under dynamic climatic conditions has been studied.
The PV electrical behavior, current and power at temperature and irradiation equal to 25 °C and 1KW/m 2, respectively, are shown in Fig. 3. In the case of short circuit current (I s c), the voltage is equal to zero, and for open circuit voltage (V o c), the PV current is zero.
The current distortion due to the use of static converters in photovoltaic production systems involves the consumption of reactive energy. For this, separate control of active and reactive powers using a proportional-integral controller is applied.
Likewise, the DC voltage will subsequently be used as input of the inverter control algorithm to generate the control signals of the IGBTs semi-conductor and the storage system.
Thanks to its advantages, cost and ease of installation and maintenance as well as their high efficiency, the use of photovoltaic (PV) systems for the production of electrical energy from solar irradiation has known a significant development in different fields such as modern buildings, pumping systems, and rural areas [1, 2, 3, 4, 5].
Figure 2 shows the PV cell equivalent circuit composed of a current source, two resistances (series and shunt), and an antiparallel diode. The current source (I s) is expressed by de following equation [14, 25]: where G and T are the irradiance and the environment temperature, respectively. K s c is coefficient of short-circuit current.
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