Different Types Of DC-DC Converters Research Articles

Design and Characterization of a Power Management System for a Pico Balloon Platform for High Altitude Radiation Monitoring

Research related to the Earth's atmosphere is increasing due to its importance in various fields. These studies are directly related to environmental changes and health problems. This occurs mainly in environments where the magnetic field is strongly weakened, such as the South Atlantic Anomaly (SAA), located in South America. As a result, studies have been conducted to monitor radiation in these locations, such as the Minuano project. Based on it, the goal of this work is to design and implement a power management system (PMS) for a high-altitude pico balloon. It must provide a minimum power of 281.78 mW to power the electronic components of the pico-balloon tracker system. We present the overall methodology for the system design and development of the PMS. Different types of DC-DC converters and different photovoltaic (PV) cell arrays have been characterized. The PMS proposed in this paper can provide a power of 284.6 mW for a parallel association of 2 arrays of 5 PV cells in series.

PLF Design for DC-DC Converters Based on Accurate IL Estimations

Even though today’s electromagnetic compatibility (EMC) standards and measurement techniques set specific limitations and a clear methodology to measure the conducted emissions (CE) of equipment under tests (EUTs), the design methodology of a suitable power-line filter (PLF) to solve non-compliance is, in general, neither accurate nor efficient. This is due to different reasons, such as unknown actual load and line impedances, unknown dominant mode in the CE, and/or inappropriate instrumentation for the appropriate measurements. The objective of this paper is to investigate if different topologies of switching mode power supplies (SMPSs) lead to different PLF structures. For the sake of exemplification, the analysis is focused on switched-mode DC-DC converters. From an EMC point of view, these devices can be completely modeled by means of Scattering (S)–parameter and CE measurements. Additionally, an analysis of their circuit models has been performed to allow a better comprehension of their characterization. In this paper, the circuit models of three different types of DC-DC converters are presented, and their component values (including nonlinearities and parasitic effects introduced by the actual behavior of the circuit elements) are estimated using the S-parameter characterization. Then, a new methodology for PLF design, based on accurate insertion loss (IL) estimations, is applied to obtain the optimal PLF for one of the converters. This methodology is experimentally tested and validated.

Design and Implementing of a Buck Dc-To-Dc Converter into the DC Motor's Speed Controller in Matlab/Simulink

This paper presents a method for controlling the speed of a DC motor that is energized individually by utilizing a DC-DC Buck converter that is fed from a DC source. It can be easily controlled with the help of different types of DC-DC converters. This project was introduced a study and analyses of the buck DC to DC converter with PID controller cascaded with DC motors which is simulated in MATLAB. The required speed of the DC motor can then be obtained by giving a variable regulated voltage to the armature of the DC motor. A controller of the proportional-integral type is utilized so that the user can adjust both the amount of current flowing through the DC motor as well as the rate at which it rotates. These controllers allow for a quick control response. In addition to that, this paper presents a Simulink model for a DC motor that was created with Matlab Simulink. The purpose behind the development of the current and speed controller was to achieve stable and high-speed control of the DC motor. The final step is the display of the simulation results for the proposed system, which show that they are consistent with the expected results. This paper shown the DC motors was able to reach the necessary speed within a few attempts; however, as the load rose, the settling time increased as well.

A REVIEW ON POWER CONVERTERS WITH DIFFERENT CONTROL TECHNIQUES FOR PV APPLICATION

Nowadays, in most of the industrial applications, power converters are required because it is very essential to convert the fixed voltage dc source into variable voltage dc source for some applications and for some more applications, it is required to convert the variable voltage dc source into fixed voltage dc source based on the application. In this paper, different types of dc-dc converters are studied based on their applications. In recent days, dc-dc converters are implemented in photovoltaic applications like solar panel, wind energy integration, dc grid system, etc. In order to obtain the regulated output dc voltage, different control techniques are also studied. In this paper comparison of different control techniques have been done. In photovoltaic systems, dc-dc converters are required in order to link the low voltage PV panel and high voltage dc link. MPPT control technique is also employed in the photovoltaic system to extract the maximum power from the PV panel. In PV DC grid system, DC-DC converters are more essential as it converts the unregulated and unstable output power to regulated, stable output. By using dc-dc power converters, use of bulky and heavy low frequency step-up coupling transformer can be avoided.

REVIEW ON DC-DC CONVERTERS WITH VARIOUS CONTROL TECHNIQUES FOR ELECTRIC VEHICLE APPLICATIONS

In recent years, the demand for electricity is awfully increasing. As the energy generation by using non-renewable sources leads to major pollution and global warming, to avoid these issues the renewable energy sources are opted universally. Among all renewable sources solar photovoltaic is most feasible, and it has its own drawbacks too, such as intermittent in nature, less efficient and generated power persists with a stochastic behaviour. To deal with these issues power electronic converters are used. In all power electronic converters the DC-DC converters plays an important role in improving DC voltage regulation and efficiency. This paper highlights different types of DC-DC converters and different control techniques for power converter. This paper also includes the MPPT algorithm implemented which ensures operation of PV module at its MPP, extracting the maximum available power. In modern days, Electric vehicles are believed to be fruitful solution for reducing green house gas emission. The battery is a fundamental part of Electric vehicle. Paper also presents different types of DC-DC Converters in electric vehicle battery.

Performance Analysis and Comparative Study of Different Types of DC-DC Converters

This paper presents the design, analysis and comparison of different types of dc-dc converters. Now days due to lack of conventional energy sources like coal, petrol, diesel etc., demand of electricity is rising day to day. To fulfill this demand of electrical energy alternative methods are very much important now. The researchers stand motivating in solar energy generation, dc-dc converters etc. In this paper Performance analysis of different dc/dc converters and comparative study of them is focused. All converters will work in Continuous conduction mode. The performance analysis of different converters (Buck, Boost, Buck Boost, CUK, SEPIC, Positive Output Super-Lift Luo Converter) and comparison of those converter’s simulation results discussed using MULTISIM 14.0.

A Heterogeneous Multi-Agent System Model With Navigational Feedback for Load Demand Management of a Zonal Medium Voltage DC Shipboard Power System

Increased demand of electric ship power with emerging requirements for serving highly dynamic loads at limited power sources, has motivated the development of medium voltage DC shipboard power systems. As different types of power converters can be involved in the same system, advanced load management scheme is required to ensure stable and optimal operation under various conditions. In this paper, a heterogeneous multi-agent system model is established for the load demand management of a zonal medium voltage DC shipboard power system, where different types of DC-DC converters with diverse conversion ratios are considered as heterogeneous agents. Then, a flocking based cooperative control protocol is designed to achieve the group objective, where navigational feedback is introduced to ensure that each agent runs within a limited range. Finally, numerical simulations are conducted to verify the performance of the proposed model. Compared with the existing work, our contribution lies in: 1) The heterogeneous multi-agent system model we formulated for a combination of DC-DC converters with different types and diverse voltage levels is more consistent with the actual power system and each converter can be controlled individually according to load ratings and priorities; 2) The modified navigational feedback with the function of confining the lower and upper bound of agents can significantly improve the control effect of the cooperative control protocol.

Investigation of Closed Loop Control for Interleaved Boost Converter with Ripple Cancellation Network for Photovoltaic Applications

Conventional sources like fossil fuels were used earlier to satisfy the energy demands. Nowadays these are being replaced by renewable sources like photo- voltaic sources. Photo-voltaic is a method of generating electrical power by converting the energy from the sun into direct current with the use of semiconductor devices that exhibit photovoltaic effect. They do not cause environmental pollution and do not require any moving parts. Different types of DC-DC Converters have been proposed in literature but Inter-leaved boost Converter (IBC) is widely used because of its fast dynamic response and high power density. This paper presents an analysis of the voltage mode control strategies employed by Ripple Cancellation Network (RCN) based two phase Interleaved boost Converter (IBC) for photo-voltaic applications. After analyzing the different Boost converter topologies, the results illustrate that IBC is more efficient than conventional boost converter as it reduces the input current ripple, output voltage ripple, component size and improves its transient response. On adding the Ripple Cancellation Network to the conventional IBC, the output voltage and input current ripple are further reduced without increasing the diode current stress. Adopting the closed loop voltage mode control, the ripple components are found to decrease significantly at the output thereby achieving a higher level of efficiency. A comparison is drawn between open and closed loop voltage control ripple component values. Simulations are carried out using MATLAB/SIMULINK software to verify with the theoretical results.