Boost Converter Research Articles

Interleaved Split-Switched-Capacitor Boost Converter With Continuous Output Current for Electric Vehicle Standalone Photovoltaic Charging Systems

Interleaved Split-Switched-Capacitor Boost Converter With Continuous Output Current for Electric Vehicle Standalone Photovoltaic Charging Systems

Hybrid Data-Mechanism Modeling for Power Loss of a Boost Converter

Parameter design is the premise to ensure the optimal performance of power electronic converters, which depends on the accuracy of the established model. However, there is still many issues for improvements in modeling methods for the parameters design of power electronic converters. Due to the lack of key mechanism and the uncertainty of parameters, the existing modeling method shows poor accuracy or efficiency. In order to simplify the process and improve the accuracy of the existing modeling method, this paper proposes a hybrid data-mechanism modeling (HDMM) method for power loss of a typical power electronic converter, Boost converter, which is with UC3842 control chip. Based on the main loss from inductor, switch tube, diode and sampling resistance, the mechanism power loss modeling of Boost converter is built. Besides, the artificial neural network (ANN) is used to learn from the sampled data and train the data-driven model. To improve the accuracy of the mechanism model, the HDMM for power loss of Boost converter is established by modification of data-driven model with limited data. Through the proposed HDMM method, the mechanism modeling method and data-driven method are well combined and the HDMM has the advantage of high accuracy and strong generalization. In the end of this paper, feasibility and accuracy of the proposed HDMM method have been verified by hardware experiments.

Predictive Control System of a DC-DC Boost Converter with Optimization of the Operating Frequency

Predictive Control System of a DC-DC Boost Converter with Optimization of the Operating Frequency

Dynamic Neural-Based Model Predictive Voltage Controller for an Interleaved Boost Converter With Adaptive Constraint Tuning

in recent years, interleaved current-fed boost dc converters consisting of a voltage multiplier and an active clamp circuit have been interested because of their good features like low input currents, and output voltages ripple high voltage-gains. Then developing more effective modeling and control techniques is important to increase their performance. In modeling section, it has been tried to estimate system model using the real data and dynamic neural networks with reducing number of variables. In control section there are constraints on control signal and its changing rate and in the proposed dynamic neural-based model predictive control (NMPC) controller, control signal changes constraint has been calculated adaptively. The proposed NMPC has been applied on system in online form and experimental results have been compared to the basic NMPC and a PI controllers. The output voltage have been specified for two loads with different input voltage. The experimental results show that their current transient response has smaller current peak and output voltage has smaller overshoot when load and voltage change. Output voltage steady-state response also has smaller oscillations about 2 volts for using proposed NMPC.

Experimental Verification of Disturbance Observer-Based Backstepping Control for DC–DC Boost Converter

Experimental Verification of Disturbance Observer-Based Backstepping Control for DC–DC Boost Converter

A Multi-Frequency PCCM ZVS Modulation Scheme for Optimizing Overall Efficiency of Four-Switch Buck–Boost Converter With Wide Input and Output Voltage Ranges

The pseudo-continuous conduction mode (PCCM) zero-voltage-switching (ZVS) modulation scheme is widely used in the four-switch buck-boost (FSBB) converter to achieve high efficiency and voltage step-up/step-down without modulation mode transition. There are two degrees of modulation freedom in the PCCM ZVS modulation scheme. The previous schemes typically only optimize one of them to reduce root mean square (rms) inductor current, which results in relatively lower efficiency in the condition when the difference between input voltage and output voltage is large. In this paper, a multi-frequency PCCM ZVS modulation scheme is proposed for the FSBB converter with wide input and output voltage ranges. By optimizing both of the two degrees of modulation freedom to reduce rms inductor current, the heavy-load efficiency can be effectively improved when the difference between input voltage and output voltage is large. Thus, the overall efficiency of the FSBB converter can be optimized. A 1500W FSBB prototype with input and output voltage ranges of 200-400V is built to verify the proposed modulation scheme.

DC-DC Boost Converter for Enhancing the Generated Output Voltage from Microbial Fuel Cell

DC-DC Boost Converter for Enhancing the Generated Output Voltage from Microbial Fuel Cell

Self-Evolving Digital Twin-Based Online Health Monitoring of Multiphase Boost Converters

Self-Evolving Digital Twin-Based Online Health Monitoring of Multiphase Boost Converters

A Three-Level Boost Converter With Fully State-Based Phase Selection Technique for High-Speed VCF Calibration and Smooth Mode Transition

A Three-Level Boost Converter With Fully State-Based Phase Selection Technique for High-Speed V_CF Calibration and Smooth Mode Transition

DC-DC Buck and Boost Converter Design for Energy Control in Hybrid PV Systems

The intermittent nature of photovoltaic (PV) power generation due to weather conditions and time of day can affect the ability of PV systems to satisfy load demand. An effective PV system must store excess electrical energy when generation exceeds demand and discharge stored energy when demand is greater than generation. This study utilizes MATLAB simulations to design and evaluate DC-DC converter circuits for battery charging and discharging in PV systems. For charging, a buck converter with a fixed 45 V source is able to reduce voltage to a range of 33.99 V to 1.46 V by decreasing the duty cycle. For discharging, a boost converter with a fixed 12.8V source can increase voltage to 16.90 V–33.49 V by raising the duty cycle. Furthermore, under equal comparison, the open-loop buck converter operating at a 35% duty cycle demonstrates worse overshoot of 14.36% versus 0.24% for the closed-loop PID controlled buck converter. Similarly, the open-loop boost converter at 70% duty cycle exhibits slightly higher overshoot of 0.47% compared to negligible overshoot for the closed-loop PID controlled boost converter.

Implementation of Passivity-based Control of Four-Leg Inverter for Transformerless Three-Phase Solar Photovoltaic Systems

This study explores the application of a passivity-based control technique (PBC) with an artificial neuro-fuzzy inference system (ANFIS) in a grid-connected Solar Photovoltaic (SPV) generating system for estimating reference grid currents. To optimise the tracking of the maximum power point (MPPT) between the solar photovoltaic (SPV) system and the DC bus, a DC – DC boost converter (BC) is utilised. This converter is connected to a four-leg, three-level neutral-point-clamped converter (4-leg 3L-NPC), interfaced with a three-phase, four-wire distribution system. The four-leg 4-leg 3L-NPC of the SPV generating system with Space vector pulse width modulation technique (SVPWM) is utilised for reducing common-mode voltage (CMV), leakage current (LC), reactive power for zero voltage regulation, power factor correction, load balancing, and the elimination of load harmonic currents in the proposed distribution system.The performance analysis of the proposed system is conducted on the Matlab/Simulink platform. Additionally, a comparative analysis is presented, contrasting the proposed system with a 3-phase 4-leg T-type neutral-point-clamped converter (TNPC) employing the PBC technique followed by ANFIS.

Enhancing Power Factor on LED Light Driver with Boost and Fly Back Converter Integration

Enhancing Power Factor on LED Light Driver with Boost and Fly Back Converter Integration

Improved Dynamic Response of a Single-Phase-Integrated KY Boost Converter with an MLI System of a DC-AC Converter in Motor Speed Regulation

KY boost converter (KBC) finds wide application in photovoltaic (PV) and single-phase inverters. In this study, a novel KBC containing seven levels of a multilevel inverter (MLI) is presented. Here, KBC between the direct current (DC) source and the inverter is proposed. Moreover, the authors considered a closed-loop response of the KBC-MLI system with a proportional integral (PI) controller and a fractional-order PID (FOPID) Controller. The main purpose of this suggested technique is to match the output current, total harmonic distortion (THD), and dynamic response of closed-loop PI and FOPID-controlled KBC-MLI systems. The proposed model is simulated with the MATLAB software, and the attained outcome illustrated an enhanced dynamic performance by using the FOPID-controlled KBC-MLI system. The simulation results of the KBC-MLI technique have been evaluated against the theoretical models. Finally, extensive experiments were carried out to validate the theoretical results.

Model-free adaptive chaos control for the boost converter

In order to solve the dynamic analysis and chaotic motion control problems of the current-mode-controlled Boost converter system, a state equation model in the continuous current mode is established. The evolutionary path of the periodic motion of the system through the doubling bifurcation to the chaotic motion is analyzed by the bifurcation diagram, Poincaré sections and phase portraits. Then, according to the fundamental principle of the resonant parametric perturbation (RPP) method, a controller is designed based on the model-free adaptive control (MFAC) method to output the perturbation amplitude, and the disturbance quantity is calculated according to the perturbation amplitude. By adding a small amplitude disturbance to the controllable parameter of the controlled system, the chaotic motion of the system is guided to expected periodic orbit. The advantage of this method is that no precise mathematical model (PMM) of the system is required. At the same time, the design of the controller is simple and easy to implement.

Tristate Converters

In the continuous inductor current operation the tristate DC/DC converters have three modes. In the first mode, the active switches are on and energy is transferred into the coil. In the second mode, the coil is short-circuited and the current in the coils stays constant, and in the third mode, the free-wheeling diode takes over the current. In the here used concept the active switch of the original converter is replaced by a series connection of two active switches and an additional diode is connected to the connection point of the two electronic switches. The other terminal of the diode is connected to the coil. This concept was originally applied to the Boost converter. In this paper, it is shown that the same idea can be applied to other DC/DC converters and the Buck and the Buck-Boost converters are shown. It is also possible to apply the concept to converters of higher order. Here the Cuk, Zeta, and SEPIC are treated. It is also possible to apply it to quadratic converters and the d-square converter is taken as an example. A converter with a reduced duty cycle is also treated and a modification that avoids the inrush current is also shown. Finally, an improved superlift converter is treated. The position of the zero of the transfer function is exemplarily studied.

Modeling and Control of a DC-DC Buck–Boost Converter with Non-Linear Power Inductor Operating in Saturation Region Considering Electrical Losses

The present work proposes a nonlinear model of a buck–boost DC-DC power converter considering the nonlinear magnetic characteristics of the power inductor and electrical losses of the system. The Euler–Lagrange formalism is used for formulating the proposed model. Previous research works have reported mathematical models to describe power inductor dynamics. However, a gap in the literature remains regarding modeling this kind of element when it operates within power converters. Also, a linear-based controller scheme is proposed to regulate a non-ideal buck–boost DC-DC power converter. A methodology for tuning the proposed controller is presented, which considers the nonlinear model structure of the power converter, the linearization procedure based on an identification process, and a frequency domain analysis based on the approximated linear model. Finally, the tuned control scheme is tested on the nonlinear model of the power converter under several operational conditions showing excellent performance by effectively regulating the output voltage. The results are compared with those derived from alternative control strategies, and a better performance is generally obtained.

A Multilevel Boost Converter with Reduced Inductor Current

DC–DC converters are gaining attention due to their importance in key applications like renewable energy generation. A desirable feature in new DC–DC converters is a reduction in the size, which can be achieved with a reduction in the energy stored in the inductors. This article introduces a new step-up DC–DC converter topology with the following advantages: (i) a larger relation of duty cycle vs. voltage gain compared with the classical boost topology and (ii) an inductor with smaller current and smaller inductance (for the same power conversion characteristics) compared to the traditional boost converter. The smaller inductor current is an advantage against many step-up topologies with the inductor in series with the input (and then the input and the inductor currents are equal). The necessary inductance to achieve a certain current ripple is also reduced compared to the classical boost topology. This results in an inductor with a smaller amount of stored energy, lower inductance, and lower current. The proposed topology can be scaled to have a full family of large-voltage-gain converters. This paper presents the mathematical analysis, simulations, and experiments to assess the benefits of the proposition.

Mobile Charging using Solar Tracking System

The use of solar energy has gained significant attention due to its ability to provide a sustainable and clean source of power. Solar tracker is a device which is used to collect the solar energy emitted by the sun. Solar tracking system is a device that follows the sun's movement throughout the day to ensure maximum exposure to sunlight. The system comprises a solar panel, servo motor and rechargeable batteries. The solar panel is used to convert the sun's energy into electrical energy, which is then stored in the rechargeable batteries. This was achieved using an Arduino UNO that controls the position of the solar panel based on the sunlight intensity. The Arduino UNO receives information on the sun's position using two Light dependent Resistors (LDRs), and then adjusts the solar panel accordingly. The energy stored in the rechargeable batteries is used to charge a mobile. To achieve this, 5V Boost Converter is used. The use of a solar tracking system for mobile charging is a viable option for providing a sustainable and clean source of power. It is an efficient way to charge mobile devices using solar energy, especially in areas where access to electricity is limited

Electronic Design of a DC-DC Boost Converter for Powering a Lo-Ra Communication Board with Bioelectricity by “Plantas Andinas”

The use of bioelectricity in various areas of science has made it indispensable to resort to new technologies to take full advantage of this natural resource. Plants are living beings, and through their biochemical processes produce a small amount of electricity derived from oxidation-reduction processes. For this reason, it is proposed to use electronic and power techniques to increase the flow of electrons produced by plants of Andean characteristics, and consequently feed a Lo-Ra type communication card, meeting the needs of long-distance data transmission, used in the collection of field information, either in areas where access or availability of power lines is complex. This proposal motivates us to continue working on sustainable energy and the exploitation of natural resources. This document details the theory, practice, and methods used to meet the objective of supplying power to a wireless communication system over a long distance. First, a description of the most important issues to be addressed is developed, and then special focus is given to the design for development of the power electronics circuit, specifically an elevator type DC-DC converter. Finally, the results obtained through the implementation used in this case are documented.
 Keywords: bioelectricity, MFC, boost-converter, Andean plants, totora, Lo-Ra TTGO.
 Resumen
 El uso de bioelectricidad en diversas áreas de la ciencia ha hecho indispensable recurrir a nuevas tecnologías para aprovechar al máximo este recurso natural. Las plantas, como seres vivos, producen una pequeña cantidad de electricidad a través de sus procesos bioquímicos, derivada de procesos de oxidación-reducción. Por esta razón, se propone utilizar técnicas electrónicas y de potencia para aumentar el flujo de electrones producidos por plantas de características andinas, y alimentar así una tarjeta de comunicación de tipo Lo-Ra, satisfaciendo las necesidades de transmisión de datos a larga distancia, utilizadas en la recolección de información de campo, ya sea en áreas donde el acceso o la disponibilidad de líneas eléctricas es compleja Esta propuesta motiva a continuar trabajando en energía sostenible y en la explotación de recursos naturales. Este documento detalla la teoría, práctica y los métodos utilizados para cumplir con el objetivo de suministrar energía a un sistema de comunicación inalámbrico a larga distancia. En primer lugar, se desarrolla una descripción de los temas más importantes a abordar, y luego se presta especial atención al desarrollo del diseño del circuito de electrónica de potencia, específicamente un convertidor DC-DC tipo elevador; y finalmente, se documentan los resultados obtenidos a través de la implementación utilizada en este caso.
 Palabras Clave: bioelectricidad, CCM, convertidor-elevador, plantas andinas, totora, TTGO Lo-Ra.

Optimized Modulation Method for Three-Level Boost Converter With ZVS Under Unbalanced-Load Operation

Optimized Modulation Method for Three-Level Boost Converter With ZVS Under Unbalanced-Load Operation