TY  - JOUR
T1  - Design and Implementation of Two-Stage 3-Level Inverter
Grid-Connected for Photovoltaic Applications
AU - Jasim Hasan, Murtadha AU - Abbas M. Al-Qrimli, Fadhil 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 17
SP  - 6430
EP  - 6443
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.6430.6443
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.6430.6443
KW  - Modeling
KW  -solar photovoltaic voltage controller
KW  -grid-tied inverter
KW  -Perturb and Observe (P and O)
MPPT
KW  -single phase multilevel inverter
KW  -SPWM
AB  - In this study proposes a simple, cost effective and efficient system for solar photovoltaic
applications. Solar energy is considered as fastest growing renewable energy source after wind energy for
electricity generation. Solar energy is a free, clean abundant sun energy considered as inexhaustible source for
electricity generation. Solar photovoltaic system is characterized with variable output power due to its operation
dependency on solar irradiance and cell temperature. To maximize the energy generation potential of solar PV,
research effort is focused on solar cell manufacturing technology to increase its generation efficiency and
exploring advancement in power electronic devices for small and large scale deployment. In this study is a
single-phase inverter with no transformer for solar PV application. A closed loop DC-DC boost converter that
accepts wide input DC voltage assumed to be from 40-60V to produce constant 330V DC voltage is modelled
in MATLAB/Simulink. An H-bridge 3-level inverter is used to convert the DC voltage to chopped AC voltage.
Then filtered to give pure sinusoidal AC of 230 V RMS. The output voltage of the inverter should have a very
low total harmonic distortion within <1% makes the system suitable for local AC load and grid connection.
ER  -