An algorithm for boost converter efficiency optimization (original) (raw)
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Design and Analysis of an Efficient Boost Converter for Renewable Energy Sources
Renewable energy is evolved from natural sources. Photovoltaic (PV) and fuel cells are commonly used Renewable energy sources. A derived DC-DC converter is suggested for efficient renewable energy sources. An efficient Boost converter (BC) topology is discussed in this paper for renewable energy sources. The merits of this topology are reduced EME (Electromagnetic emission), fast transient response and low input current ripple. In suggested topology, 2 identical inductors and an auxiliary inductor are used to reduce the switching loss and switching stress of BC connected with PV system, used PWM technique for triggering the switches. The performance of BC along with PV system is analyzed by Matlab/Simulation software.
Power loss model for efficiency improvement of boost converter
2011 XXIII International Symposium on Information, Communication and Automation Technologies, 2011
The analytical expressions for boost converter loss are presented in this paper. All significant sources of conduction and dynamic losses within the converter elements, including losses in choke magnetic material and switching losses which occur due to diode recovery time, are discussed. Sources of losses in continuous and discontinuous current mode of converter are examined. The equivalent input resistance of the generator is included in converter loss model. In the paper, the case when single-phase rectifier is input circuit of the converter is presented. Loss model of converter and its efficiency was compared with experimental measurements on a prototype of the boost converter.
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In the current century, the requirement of dc power plays a vital role in industrial areas. Most of the application needs variable dc power supply for the operation. The efficient dc power is able to control the electrical equipment appropriately. A microcontroller based DC-DC Buck-boost converter is designed and presented in this project. The variable dc voltage obtained from the converter circuit which is controlled by signal representing from microcontroller. In order to control the output voltage of the buck-boost converter, the controller is designed to change the duty cycle of the converter. The simulation circuit is developed using MATLAB simulation program. An experimental set up is developed to verify the simulation results. The buck-boost converter circuit with MOSFET as a switching component is developed. The microcontroller is used to generate duty cycle of PWM signal is programmed. The simulation and experimental results show that the output voltage of the buck-boost co...
Design of Feedback Controller for Boost Converter Using Optimization Technique
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In this paper a new method of controller design for boost type dc-dc converter is proposed. A feedback controller for DC-DC boost converter is designed to obtain constant output voltage of 24v.The optimal values of feedback controller is obtained using Genetic Algorithm (GA). Design equations are derived and it is modeled in MATLAB. Extensive simulation is carried out with linear controller parameters and the results are presented. To compare the output of the GA based design and BFOA, the controller parameters are also determined using conventional method (Z-N). Simulation results are validated through hardware results.
Optimization of Switching Loss of a DC-DC Boost Converter
International Journal of Recent Technology and Engineering (IJRTE), 2019
The dc-dc boost converters are widely used in various power conversion applications because of their increase in demand both in domestic, commercial and industrial applications. The voltage boosting techniques include mostly combination of components such as inductors, capacitors, switches etc with their various configurations. The combination of these boosting components oriented in different configurations appears largely in literature, but refer the techniques of hard-switching of the semi-conductor devices. In order to meet the growing demand and to look into the aspect of better efficiency of these converters, the soft-switching of devices plays a prominent role, which lacks in literature. Though very few papers appear in literature as far as soft-switching is concerned, but the addition of more than one or two switches make the things uneasy and the researchers lack interest in it. Even though the conventional boost converters appear in various forms of topologies in literatur...
Sliding-mode control for boost converters under voltage and load variations
International Journal of Power Electronics and Drive Systems, 2023
Boost converters are employed in DC motors, switch-mode power supplies, and other applications. Practical implementation difficulties, reliance on variable-frequency units, and delayed dynamic responses to changes in load and voltage are the main drawbacks of different control methods for the boost converter. In this paper, two techniques were proposed with the target of controlling the boost converter to improve the efficiency of the converter's performance. The two techniques used in this paper depended on fixed-frequency mode instead of variable-frequency mode because of the demerits of the latter factor. The first technique is the sliding-mode control for the AC-DC converter to achieve power factor correction and reduce the harmonic ratio significantly while regulating the output voltage. This technique was used for the DC-DC converter to obtain a rapid dynamic response to control sudden or considerable changes in loads or input voltages with a regulated output voltage. Moreover, the two-loop cascade control is the second proposed technique for the DC-DC converter to achieve an excellent dynamic response under step loads or input voltage variations with an excellently regulated output voltage. Re-simulation results validated the proposed design approach and illustrated the proposed controller's robustness and faster response time.
Experimental Study of the Boost Converter under Current Mode Control
International Journal of Power Electronics and Drive Systems, 2015
This paper presents the practical analysis of Boost converter operating in continuous conduction mode under current control. We start by theconverter modeling, then experimental results will be exposed where we propose an experimental circuit, to study the influence of the variation of different circuit parameters such as reference current, input voltage and load. We also analyze the control technique performances. The experimental results are given and interpreted in each case.
Modeling and Design of High Quality Boost Converter with Conventional Converter
In this paper the derivation of state feedback gain matrix for Boost converter under continuous time are explained using pole placement method. Similar to the Observer controller for Buck converter, the derivation of the observer controller for the Boost converter under both the continuous and discrete time domain is derived. The simulation and results are also presented.
This paper presents a design and simulation of DC/DC boost converter. This system has a nonlinear dynamic behavior, as it work in switch-mode. Moreover, it is exposed to significant variations which may take this system away from nominal conditions, due to changes on the load or on the line voltage at the input. The input usually is obtained by PV array and therefore the design and simulation in this paper covers the whole range of radiations and temperature. In this paper we analyze the equations of a boost converter and propose a design components and simulation of DC/DC boost converter. This work is applied to photovoltaic system for tracking the point of maximum power.
DESIGN AND SIMULATION OF DC/DC BOOST CONVERTER
This paper presents a design and simulation of DC/DC boost converter. This system has a nonlinear dynamic behavior, as it work in switch-mode. Moreover, it is exposed to significant variations which may take this system away from nominal conditions, due to changes on the load or on the line voltage at the input. The input usually is obtained by PV array and therefore the design and simulation in this paper covers the whole range of radiations and temperature. In this paper we analyze the equations of a boost converter and propose a design components and simulation of DC/DC boost converter. This work is applied to photovoltaic system for tracking the point of maximum power.