Akademik Veri Yönetim Sistemi
1. INTERNATIONAL HASANKEYF SCIENTIFIC RESEARCH AND INNOVATION CONGRESS, 5 - 06 Kasım 2021, ss.274-280
The
alternative energy resources have come to the fore in order to meet the
increasing energy demand, since fossil resources are limited and damage nature.
In this sense, the renewable energy resources (solar, wind, hydrogen etc.) are
an alternative to meet the energy demand without harming the nature. In particular, solar
energy, which is almost unlimited, easy to access and free, is one of the most
important renewable energy resources. A low-level nonlinear dc electrical
energy is generated from solar energy (irradiations coming from the Sun) by
means of photovoltaic (PV) panels and the irradiations constantly change due to
the character of the Sun. it is desired to draw maximum power from the PV panel
in any case. For this, it is necessary to use the maximum power point tracking
(MPPT) control method with an intermediate circuit. In this study, a
conventional DC-DC boost converter was preferred as an intermediate circuit in
order to be able to use the low-level nonlinear dc voltage obtained from PV
panel both in high power applications and to linearize it. At the same time,
controllers are needed for both voltage and current in order to obtain the
desired voltage and current values at the output of the proposed circuit. PI
controller is used for voltage control and average sliding mode control (ASMC)
is used for current control. An off-grid PV system with proposed control methods
designed for a 400 W load with 200V output voltage and a PV panel that has 67 V
voltage with 435 W power. The proposed system was simulated in MATLAB/Simulink.