Design and Implementation of Efficient Solar Powered DC-DC Boost Converter for Loads (original) (raw)
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High Gain Step Up DC-DC Converter For DC Micro-Grid Application
—In this paper a very high gain step up DC-DC converter is proposed. Maximum voltage gain in conventional boost converter like, switched inductor converter, switched ca-pacitor converter, cascaded boost converter etc. are limited due to extreme duty cycle (i.e. duty cycle near to unity). Operation at extreme duty cycle leads to, serious reverse recovery problem at the switches, high conduction losses, high electromagnetic interference etc. Isolated converter such as fly-back converter, push-pull converter, forward converter, bridge converters etc. overcomes the above issues, where basically a transformer or coupled inductor is used to boost the voltage. But, inclusion of transformer or coupled inductor introduces voltage spike at the main switch and power loss due to leakage inductance. Recently, DC micro-grid gets major importance because of the significant increase in DC loads and demand of high quality power. These DC loads require different voltage levels based on their power ratings. Photo voltaic source (PV) is one of the prime source of energy in DC micro-grid. A very high voltage gain converter is necessary for DC micro-grid because of low PV source voltage. In this regard, here a step up DC-DC converter is proposed, which possess a very high voltage gain characteristic. Along with this, it provides the additional advantage of supplying power to two different loads (i.e. one for high voltage level and another for low voltage level), which makes it more suitable for DC micro-grid application. Steady state analysis and PWM control of the proposed converter are described in this paper. Theoretical verification of the proposed converter has been done by simulating it in MATLAB Simulink Index Terms—DC-DC boost converter, DC microgrid, duty cycle.
Modelling and Simulation of High Step up Dc-Dc Converter for Micro Grid Application
IJMER
Abstract: The distributed generation (DG) systems based on the renewable energy sources have rapidly developed in recent years. These DG systems are powered by micro sources such as fuel cells, photovoltaic (PV) systems, and batteries. The micro grid concept consists of two stages, in the first stage the low level voltage from the pv cell is converted to high level voltage by using DC-DC converter. In the second stage the high level DC voltage is converted into AC voltage by using an inverter and is supplied to load. This paper proposes a novel High Step-up DC-DC converter for micro grid application. The proposed converter is modelled and simulated along with pv cell and inverter through MATLAB/SIMULINK for AC load. The proposed converter has high voltage gain and efficiency. The results are successfully verified.
Title Performance Analysis of Various DC–DC Converters in PV-Based Micro Grid Environment
Lecture Notes in Mechanical Engineering
The primary objective of this review is to choose a DC-DC converter among the different converters used in solar system and to verify its reliability in the PV-based micro grid environment. As the requirement of energy is increasing day by day and the alternate endless source is solar energy, it is now the prime time for focusing on its feasibility, utility, and efficiency. In this process, we have studied the different subsections of the photovoltaic (PV) solar energy system such as DC-DC converter, Maximum power point tracker, pulse width modulation, filters, three-phase inverter, etc. The conclusion obtained is that the maximum power can be tracked efficiently with the P&O algorithm. Furthermore, to control and switch the DC-DC converts, Pulse Width Modulation (PWM) was performing satisfactorily. Still another issue is there to choose a suitable DC-DC converter among the several converters available and proposed in the literature. In this paper, the different DC-DC converters such as Buck, Boost, Buck-Boost, Cuk, and SEPIC are modeled in MATLAB and connected individually with a micro grid. To examine the behavior of the converters, the solar PV array is tested under various irradiations and temperature and results are recorded for verification. The paper is concluding that the CUK converter is providing maximum efficiency for steady-state output and providing a solution to the noise and unnecessary heating related to the DC-DC converter.
This paper develops the design aspects of DC-DC Boost Converter in solar Photovoltaic (PV) system using Maximum Power Point Tracking (MPPT) Algorithm. The amount of electric power generated by PV module is always varying with irradiation of Sun. MPPT algorithms has led to the increase in the efficiency of operation of the solar modules. By changing the duty cycle of the converter the load impedance as seen by the source is varied and matched at the point of the peak power with the source so as to transfer the maximum power.
Hybrid power supply systems are widely used in many applications. Due to low reliability of Photovoltaics(PVs) in generating regulated electric power, requirement of energy storage devices with PVs is undeniable. In low voltage PVs, high gain DC-DC converters are used to connect them to 400V DC-link. In this paper a high step-up soft switching double input DC-DC converter is proposed to increase the performance of hybrid power supply systems. The proposed converter is analyzed and discussed. Operation intervals of the converter is presented in section II, Voltage gain of the converter is derived in section III and soft switching condition is presented in section IV. A Design example is carried out in section V and simulation results are presented in section VI to validate the characteristics of the proposed converter. Finally, a comparison is performed with other type of converters to show the advantages of the proposed hybrid supply system.
In this paper a comparative study of the DC DC converters is done for the standalone solar powered panel for single-phase supply. For present scenario of the electrical energy demand we require a pollution-free eco-friendly solution. Now a days Governament of India has made it compulsory that carbon footprint should be reduced at every stage while generating electricity by incorporating the photovoltaic panel. The photovoltaic panel and its accessories are required to be efficient and economical. A standalone system consists of a photovoltaic panel followed by a DC-DC converter and then a DC-AC inverter connected in series with it. This paper gives a description and comparison of various DC-DC converters such as Traditional Boost Converter (TBC), Swithced Inductor Boost Converter (SIBC) and Coupled Inductor Boost Converter (CIBC) with modeling and simulation for rated power supply along with a single-phase inverter. Though, roof top supply system has become very popular for domestic supply yet partial shading, design elements, rating of components according to the need of electric power is a big issue. Here TBC, SIBC, and CIBC are discussed mathematically and graphically then simulated in MATLAB.
Incorporation of a Step-Up Boost Converter in Photovoltaic Power Systems for DC Applications
International Journal of Smart Grid and Sustainable Energy Technologies
The dependency of relying on switching power supplies is increasing and in more demand these days to present superior efficiency as it’s compared to conventional linear power supplies. The main target in any type of photovoltaic power system is to increase the efficiency rate of the PV arrays; and as a result power systems that depend on a set of PV arrays have a priority to track the maximum power point MPP to extract the ultimate maximum power from the set of arrays. One of their important characteristics is the ability to provide step-up in the form of Boost converters, step-down in the form of buck converters, and utilized in the sense of inverting. In this research paper we will delineate a sector of the various sort of switching regulators used in dc-dc conversion especially the boost converter. In addition a review of the control techniques for these converters were touched based.
Design and Analysis of Input Capacitor in DC–DC Boost Converter for Photovoltaic-Based Systems
Sustainability
Photovoltaic (P.V.) systems have become an emerging field for power generation by using renewable energy (RE) sources to overcome the usage of conventional combustible fuels and the massive release of dangerous gases. The efficient operation of the PV system is vital to extracting the maximum power from the PV source. For this, a maximum power point tracking (MPPT) algorithm works with a DC–DC converter to extract maximum power from the P.V. system. Two main issues may arise with the involvement of a converter: (1) to locate M.P.P and (2) the performance of the PV model in varying weather conditions. Therefore, designing any converter gain has the utmost significance; thus, the proposed work is on non-isolated boost converters. To calculate the values of specific parameters such as input capacitor, output capacitor, and inductor, the averaging state-space modeling typically uses governing equations. In this research, the formula of the input capacitor is derived through the average ...