Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 50 for “"Buck-Boost"”.
-
Design of a wide input supply range buck-boost converter
Buck-boost converters allow the flexibility of stepping-up and stepping-down the input supply to generate a regulated output, thus making them very attractive for applications with wide input supply range. Currently, off-the-shelf buck-boost converters require a minimum operating voltage of 1.8V. …
-
Modeling and Analysis of a Four-Switch Buck-Boost Dynamic Capacitor
… VAR control through the combination of AC/AC buck and boost cells. This paper introduces a new topology deemed the “Four-Switch Buck-Boost Dynamic Capacitor” which promises to combine the performance of the AC/AC buck and boost cells into a single power electronic device. This is done in an …
-
Improving the control strategy for a four-switch buck-boost converter
The four-switch buck-boost converter, such as implemented with the Linear Technology LTC3440 integrated circuit, is useful in many applications. While this topology can be highly efficient, new strategies for controlling it could decrease power losses even more. The strategy proposed for this …
-
Condensed Buck-Boost Switched Capacitor Converter for Efficient Voltage Distribution in Electrified Aircraft
… topology and referred to as a condensed buck-boost converter. This converter is designed and built for an application as the interface between the battery voltage and DC bus on partially electrified aircraft, where the advantages of its ability to step up/down voltage in an efficient and …
-
An improved perturbation and observation in MPPT control using buck-boost converter in solar panel
… using Perturbation and Observation (P&O) for buck-boost converter in 50W output from 1kW solar panel. Direct current buck-boost circuit is also been designed and implemented in order to control the output voltage of this project. The Buck-boost circuit with a MOSFET is used as switching …
-
Design of a novel flying capacitor multilevel buck-boost converter for electric aircraft de-icing applications
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
-
Design and implementation of Silicon-Carbide-based Four-Switch Buck-Boost DCDC Converter for DC Microgrid Applications
… compared in this thesis, and the four-switch buck-boost (FSBB) converter topology has been selected as the candidate. This work investigates the operation principle of the FSBB converter, and a digital real-time low-loss quadrangle current mode(QCM) control implementation, which satisfies the …
-
Design and development of a traction motor emulator using a three-phase bidirectional buck-boost AC-DC converter
… bi-directional converter inspired from classical buck-boost operation, requires just ten unidirectional IGBT switches preventing any circulating current in the system. The proposed converter also eliminates the regenerative converter stage in classical ME system. Also, the proposed …
-
Analysis, design, and evaluation of the optimum topology Cuk converter in comparison with the conventional Buck-Boost converter
… utilized for the comparison of the conventional BuckBoost and Cuk converters. Detailed comparisons are made with respect to the loss and weight breakdowns. of the optimum design of the two converters for a given set of performance specifications. The comparison shows that the Cuk converter …
-
Research on MPPT methods for photovoltaic system based on microgrid
… It presents three types of DC-DC converters -- Buck, Boost and Buck-Boost converter. This work proposes to apply a DC-DC converter of Buck-Boost type to make PVS controllable because this type of converter has the largest range for operational region so that it can get the best result on MPPT. …
-
Current source dc-dc and dc-ac converters with continuous energy flow
… The performances of different proposed buck, boost, and buck-boost current source inverters are discussed and compared in terms of efficiency, total harmonic distortion, input current ripple, capacitor stresses, and control complexity. Some of the proposed current source inverters offer …
-
Digital current mode control for multiple input converters
… on-time current-mode control, the control of MI buck and MI buck-boost converters can be simplified into an equivalent-single-input converter control problem. The small signal models of digital constant on-time controlled single-input (SI), MI buck and SI, MI buck-boost converters in both CCM and …
-
Diseño y control de un convertidor electrónico de potencia del tipo reductor-elevador
… La topología deriva de la versión sincrónica del BuckBoost no inversor. Dicho circuito admite el manejo independiente de sus dos pares de transistores. Gracias a esta flexibilidad, es posible plantear distintos modos de operación para mejorar la eficiencia del sistema. La forma de trabajo del así …
-
Single Phase Power Factor Correction Circuit with Wide Output Voltage Range
… a comparison of two main power stage candidates (Buck+Boost and Sepic) in terms of efficiency, complexity, cost and device rating, the buck+boost converter is employed as the variable output PFC power stage. From the loss analysis, this topology has a high efficiency from light load to heavy load. …
-
Design and Analysis of a Single-Stage Inverter Using Parallel DC-DC Converters for Solar Cell Application
… concept to investigate the possibility of using boost and buck-boost converters to provide an AC output. The proposed circuit utilizes non-synchronous boost and buck-boost converters due to their simplicity in control signals as opposed to synchronous converters. The application of the proposed …
-
Digital Control Techniques for Switching Power Converters
… foundation for time-scale separation. If a buck, boost, buck-boost, or flyback converter meets a simple requirement, then inductor current operates on a fast time scale while the capacitor voltage changes on a slow time scale. This separation enables other control techniques. The second new …
-
Self-Oscillating Unified Linearizing Modulator
The continuous conduction mode (CCM) boost, buck-boost and buck-boost derived pulse-width modulation dc-dc converters suffer from the large-signal control-to-output nonlinearity. Without feedback control, the large-signal control-to-output nonlinearity would lead to output overregulation and even …
-
Broadband excitation of fuel cells for online condition monitoring using different switch-mode DC-DC mode topologies
… the feasibility and compares the use of the buck-boost and boost converters to perform impedance spectroscopy, and this is done by modelling and designing the converters for a linearized region of operation to accommodate different operating conditions of the fuel cell. This is achieved …
-
Single-Phase Bi-directional Ćuk Inverter for Battery Applications
… to store energy for later use. As such, only buck-boost based topologies are majorly being proposed and used for this functionality. The buck boost converter is the most widely used in such applications because of its higher efficiency, low component count and simple structure. It has …
Page 1 of 3