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Register a new userDesign and Realization of Sliding Mode Control DC to DC Boost Converter of photovoltaic systems
تصميم و تنفيذ مبدلة تقطيعية رافعة للجهد المستمر تعمل بنمط التحكم المنزلق تستخدم في المنظومات الكهروشمسية
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يقدم هذا البحث دراسة تفصيلية و تصميماً عملياً أمثل لمبدلة تقطيعية رافعة للجهد المسـتمر تعمل بنمط التحكم المنزلق SMC) Control Mode Sliding) و التي تعـد طريقـة جديـدة للتحكم بالمبدلات التقطيعية غير المعزولة الرافعة للجهد المستمر و المستخدمة في الأنظمـة الكهروشمسية s'PV) Systems Photovoltaic) و ذلك بغية المحافظة على جهد خرج ثابت و مستقر ضد اضطرابات خرج اللواقط الكهروشمسية من تيار و جهد أو تغيرات فـي قيمـة الحمل، و العمل في جوار نقطـة الاسـتطاعة العظمـى MPPT) Tracking Maximum Point Power) .
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 stable 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.
References used
Ahmed, M., Kuisma, M., Silventoinen, P., "Sliding Mode Control for Half-Wave Zero Current Switching Quasi-Resonant Buck Converter". 4th Nordic Workshop on Power and Industrial Electronics, NORPIE'04, Norway 2004
T. Esram, J.W. Kimball, T. Krein, L. P. Chapman; "Dynamic Maximum Power Pint Tracking of Photovoltaic Array Using Ripple Correlation Control", IEEE Transactions on Power Electronics, Vol. 21, No. 5, Sept. 2006
M. Jantsch1, M. Real, H. Häberlin, C. Whitaker, K. Kurokawa, G. Blässer, P. Kremer, C.W.G. Verhoeve, "Measurement of PV Maximum Power Point Tracking Performance", Netherlands Energy Research Foundation ECN,2001
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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 des
igns,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.
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.
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.
This paper offer a designed module for buck-boost DC-DC converter, able to solve
unsteady charging voltage problem, due to constant decreasing scale of transformers and
grid or solar panel voltage drop, this module has been designed using fuzzy log
ic in PWM
control and simulated in matlab and all test and its results illustrated the suitable figure.
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.
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