TY  - JOUR
T1  - Visualization of Integrating Hybrid Wind-PV Systems into Power Grid
Using HVDC Link
AU - Sowilam, Gamal M.A. AU - Kawady, Tamer A. AU - Shalwala, Raed A. 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 13
SP  - 4331
EP  - 4346
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.4331.4346
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.4331.4346
KW  - PV power plant
KW  -wind turbines
KW  -HVDC link
KW  -PWM inverter
KW  -DC boost choppers
KW  -electrical grids
AB  - This study presents explores deeply the possibilities and benefits of interconnection of large
Photo-Voltaic (PV) and wind power systems into the grid through High Voltage Direct Current (HVDC) link. The
use of HVDC is usually required for transmission distance longer than 50 km. Such lines are typically used to
interconnect two asynchronous networks even with different frequencies to avoid possible stability disturbances
greatly. A Maximum Power Point Tracking (MPPT) techniques is utilized to control the photovoltaic system in
order to obtain the maximum power from the integrated PVs. Adapting the MPPT control changes the duty ratio
of the boost converter and increase (or decrease) the output DC voltage of the PV power plant. Wind systems uses
the MPPT through controlling the trip-speed ratio. In this study, a HVDC link with two 12-pulse converters based
on thyristor-bridges for both rectification and inversion modes, respectively. The roles of the delay and the
extinction angles of both the rectifiers and inverter are explored for controlling the transmitted active power from
the PV and wind power plants into the grid. Different simulation investigations are provided with a detailed
modeling with the Simulink/MATLAB for evaluation purposes. These tests corroborate the efficacy of HVDC links
for supporting the integration of large PV and wind power plants into electrical grids.
ER  -