3 results listed
This paper proposes an improved MPPT controller
without system dependency. This controller consists of three
stages which are initialization, action and perturb and observe
(P&O) algorithm. First, value of solar irradiance is estimated by
measuring PV current under certain condition. Then, a look-up
table is used to calculate duty ratios in the action stage. Finally,
P&O algorithm is used to complete MPPT precisely. To validate
the superior performance of the proposed MPPT controller, a
single ended primary inductance converter (SEPIC) and MPPT
system are modelled in MATLAB/Simulink environment.
Besides that, experimental results show that proposed controller
has better performance compared with P&O algorithm.
1.st International Conference Energy Systems Engineering
ıcese'17
Mustafa Engin Başoğlu
Bekir Çakır
This paper presents a modified global maximum
power point tracking (GMPPT) algorithm which may be suitable
in module integrated converters (MICs) used in distributed
MPPT (DMPPT) system. Algorithm developed for this type of
system uses basic voltage - current (V-I) and voltage - power (VP) characteristic features of photovoltaic (PV) modules. It
employs the relationship between maximum power voltage and
open circuit voltage of a PV module and number of bypass
diodes included in a module. To verify the effectiveness of the
proposed algorithm, single ended primary inductance converter
(SEPIC) is designed. Simulative and experimental results show
that GMPPT is realized for all shading conditions with small
convergence time owing to the searching of large duty range.
1.st International Conference Energy Systems Engineering
ıcese'17
Mustafa Engin Başoğlu
Bekir Çakır
Turkey's electricity demand increases continuously
due to the population growth and industrial development. For
this reason, diversification of energy sources becomes an
important requirement for Turkey, in order to provide security
of energy supply and reliable and continuous energy. In this
context, many changes have been made in electricity market and
usage of renewable energy sources in electricity generation has
been encouraged with many incentives in Turkey. It can be said
that there is almost no barrier for investors in photovoltaic (PV)
electricity. In this study, the latest status of PV electricity of
Turkey and recent developments in renewable energy incentives
are evaluated. Besides that, energy performance of a three phase
grid-connected PV power system is evaluated by some commonly
known indicators such as performance ratio, specific energy and
yearly solar electricity etc. for technical feasibility of PV system.
Besides that performance comparison of three different solar
modules are made under İzmit, Kocaeli weather conditions.
1.st International Conference Energy Systems Engineering
ıcese'17
Mustafa Engin Başoğlu
Bekir Çakır