Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userDesign and implementation of high efficiency DC-DC converter for standalone photovoltaic systems
دراسة و تنفيذ مبدل DC-DC بفعالية عالية للعمل مع الأنظمة الكهروشمسية المستقلة
1831
4 101
0
(
0
)
Authors
خضر بشور( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
يقدم هذا البحث دراسة تفصيلية وت نفيذا عمليا لمبدل رافع للجهد DC-DC باستطاعة 100W بفعالية عالية لمعمل مع نظام كهروشمسي مستقل. بحيث يتم اختيار أفضل العناصر للتصميم بأقل فقد في الطاقة، بهدف الوصول إلى أفضل مردود و ذلك من خلال الحساب النظري للمردود و اجراء محاكاة على برنامج ORCAD للتصميم و حساب المردود و مقارنة النتائج مع التصميم العملي. و كذلك يعرض البحث تأثير تغير التردد على مردود المبدل.
This research introduce a detailed study of designing high efficiency 100W DC-DC Boost Converter for standalone photovoltaic system and practical implementation of it’s circuit, by selecting the best elements with less loss in power in the tow designs,to reach the best efficiency by theoretical calculations and simulation in ORCA, and compare the results with the practical implementation. Also this research shows a study of effect of frequency variation on the efficiency of the converter.
References used
W.ERICKSON,R1999 - DC-DC Power Converters. Wiley, Colorado,60p
BASTOS,J 2008 - DC-DC Switch-Mode Converters. University of Algarve, chapter 7,58pp
"Prof. RUFER,A and Barrade.P - cours d' electronique de puissance Conversion dc-dc, Masson ,90pp
rate research
Read More
The article studies the open loop
and closed loop systems for the improved converter. An improved
DC-DC boost converter is modeled and simulated using Matlab
R2013a.
The simulation and experimental results of the tow systems are
presented and co
mpared. The performance of the improved
converter is also compared with the conventional boost converter.The article studies the open loop
and closed loop systems for the improved converter. An improved
DC-DC boost converter is modeled and simulated using Matlab
R2013a.
The simulation and experimental results of the tow systems are
presented and compared. The performance of the improved
converter is also compared with the conventional boost converter.
Search is based on the first stage DC/DC in the solar photovoltaic system, where it
was appropriate to use Ripple Correlation Control method for tracking the maximum
power point of photovoltaic arrays. The technique takes advantage of the signal ri
pple,
which is automatically present in power converters, where the ripple is interpreted as a
perturbation from which a gradient ascent optimization can be realized. The Basic feature
of Ripple Correlation Control technique converges asymptotically at maximum speed to
the maximum power point, and has simple circuit implementations. And will validate the
results in practice.
This research is a study of a new control method of switching non-isolated
dc-dc boost converters used in Photovoltaic systems. This method is called
Sliding Mode Control (SMC), which is considered as an alternative to other
methods, to keep a sta
ble and constant output voltage by changing the input
voltage and load current. The analyzing method of the switching nonisolated
dc-dc boost converters using SMC shows the same complexity of
Clasic circuits, but it gives an increasing potential and a high-dynamic
response to ensure a constant output voltage reaches to 40volt by changing
the input voltage in the range (16-21volt) and the load (8-13Ω). Methods to
measure the accuracy, error, and efficiency of maximum power point
trackers (MPPT) have been identified and presented in a schematic way,
together with definitions of terms and calculations.
This research deals with improving the efficiency of solar photovoltaic (PV) power
systems using a Maximum Power Point Tracker controller (MPPT controller), based in his
work on the Maximum Power Point Tracking techniques via the direct control met
hod.
Which used to control the duty cycle of DC-DC Voltage Converter, to achieve the
photovoltaic system works at a Maximum Power Point under different atmospheric
changes of the solar insolation and ambient temperature. In this context, our work is
focused on the simulation of the components of the power generating system, such as the
photovoltaic system, DC-DC Boost Converter and a MPPT controller in Matlab/Simulink
environment. The simulating of the MPPT controller was based on several algorithms such
as: Constant Voltage algorithm, Perturb and Observe algorithm and Incremental
Conductance algorithm by using Embedded MATLAB function. The simulation results
showed the effectiveness of the MPPT controller to increase the photovoltaic system power
compared with non-use of a MPPT controller. The results also showed the best
performance of MPPT controller based on Perturb and Observe and Incremental
Conductance algorithm, compared with constant voltage algorithm in tracking the
Maximum Power Point under atmospheric changes.
The DC sources like fuel cells, solar cells, storage units need to
raise its output voltage in order to match load requirements. So often these systems are equipped with Power Electronics
techniques in general and DC-DC booster converters in partic
ular.
The paper provides the mathematical model and algorithm for
designing the booster converter with selected values in order to define the values of the most important parameters of its
components including inductor parameters. Based on the developed algorithm, a simulation of the system is conducted in MATLAB / Simulink environment to analyze the impact of changing the inductor inductance on booster performance.
Also the paper includes the mathematical model and algorithm for designing the booster inductor in terms of material, conductor type and shape of core and number of windings. Based on the design results, the inductor has been implemented completely in the laboratory. The inductance of the implemented inductor has been measured using a number of measuring methods to make sure of its value and match it with the theoretical values of design. Finally, the developed algorithm has been translated into a program in an environment Matlab / GUI , with which several computer tests have been performed.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
