scholarly journals Low Power Photo-Voltaic Harvesting Matrix Based Boost DC–DC Converter with Recycled and Synchro-Recycled Scheme

2020 ◽  
Vol 10 (4) ◽  
pp. 39
Author(s):  
Maziar Rastmanesh ◽  
Ezz El-Masry ◽  
Kamal El-Sankary
Keyword(s):  
Low Power ◽  
Output Voltage ◽  
Current Mode ◽  
Boost Converter ◽  
Boost Converters ◽  
Continuous Current ◽  
Photo Voltaic ◽  
Continuous Current Mode ◽  
Conversion Efficiencies ◽  
Voltage Conversion

Photo-voltaic (PV) power harvest can have decent efficiency when dealing with high power. When operating with a DC–DC boost converter during the low-power harvest, its efficiency and output voltage are degraded due to excessive losses in the converter components. The objective of this paper is to present a systematic approach to designing an efficient low-power photo-voltaic harvesting topology with an improved efficiency and output voltage. The proposed topology uses a boost converter with and extra inductor in recycled and synchro-recycled techniques in continuous current mode (CCM). By exploiting the non-linearity of the PV cell, it reduces the power loss and using the current stored in the second inductor, it enhances the output voltage and output power simultaneously. Further, by utilizing the Metal Oxide Silicon Field Effect Transistor’s (MOSFET) body diode as a switch, it maintains a minimum hardware, and introduces a negligible impact on the reliability. The test results of the proposed boost converters show that it achieves a decent power and output voltage. Theoretical and experimental results of the proposed topologies with a tested prototype are presented along with a strategy to maximize power and voltage conversion efficiencies and output voltage.

scholarly journals Nonlinear Analysis of CCM Superbuck Converter Using Wigner-Ville Distribution

2020 ◽  
Vol 19 ◽  
Keyword(s):  
Output Voltage ◽  
Current Mode ◽  
Nonlinear Phenomena ◽  
Energy Component ◽  
Bifurcation And Chaos ◽  
Time Frequency ◽  
Period 2 ◽  
Continuous Current ◽  
Continuous Current Mode ◽  
Frequency Diagram

In order to analyze the bifurcation and chaos of Superbuck converter in Continuous Current Mode (CCM), a new method of time-frequency diagram based on Wigner-Ville distribution is proposed. The method is used to analyze the variation of the energy component of the output voltage with frequency and time. It reveals that the Superbuck converter exhibits period-1 bifurcation, period-2 bifurcation, period-4 bifurcation and chaos under different reference current. The results of the time-frequency diagram are consistent with the results of the bifurcation diagram, time-domain diagram, phase diagram and Poincare section. It proves that the method can deeply understand the nature of bifurcation and chaos in Superbuck converter, and it provides a new way to analyze the nonlinear phenomena of DC-DC converter

scholarly journals Design buck converter with variable switching frequency by using matlab simulink simulation

2020 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Norazila Binti Md Posdzi ◽  
Norsa’adah Binti Mahmor ◽  
Rasidah Binti Abdul Rani
Keyword(s):  
Output Voltage ◽  
Current Mode ◽  
Buck Converter ◽  
Switching Frequency ◽  
Resistive Load ◽  
Current Waveform ◽  
Matlab Simulink ◽  
Simulink Simulation ◽  
Continuous Current ◽  
Continuous Current Mode

This paper presents the design of a buck converter circuit with different input switching frequency by using Matlab Simulink software. This study focuses on defining the suitable value of the inductor and capacitor to be used in the buck converter with 100VDC supply input, where the input switching frequency is use 5kHz and 25kHz. This is because the input switching frequency of a buck converter affects many aspects of circuit functionality. This design of the circuit used 20% of the duty cycle, and inductor value is 25% of Lmin to ensure the operation is in continuous current mode. The evaluation of inductor current and switching frequency used in the circuit and parameters for this analysis based on the output voltage, inductor voltage and inductor current waveform. The design of the circuit verified by simulation and results compared with the theoretical. In addition, the appropriate input switching frequency between 5kHz and 25kHz has been determined in order to use in the buck converter circuit for 100Ω resistive load.

scholarly journals Comparison of electronic load using linear regulator and boost converter

2021 ◽  
Vol 12 (3) ◽  
pp. 1720
Author(s):  
Razman Ayop ◽  
Shahrin Md Ayob ◽  
Chee Wei Tan ◽  
Tole Sutikno ◽  
Mohd Junaidi Abdul Aziz
Keyword(s):  
Current Mode ◽  
Power Converter ◽  
Boost Converter ◽  
Electrical System ◽  
Linear Regulator ◽  
Continuous Current ◽  
Integral Controller ◽  
Electronic Load ◽  
Continuous Current Mode ◽  
And Control

<span lang="EN-US">Direct current (DC) electronic load is a useful equipment for testing the electrical system. It can emulate various load at a high rating. The electronic load requires a power converter to operate and a linear regulator is a common option. Nonetheless, it is hard to control due to the temperature variation. This paper proposed a DC electronic load using the boost converter. The proposed electronic load operates in the continuous current mode and control using the integral controller. The electronic load using the boost converter is compared with the electronic load using the linear regulator. The results show that the boost converter able to operate as an electronic load with an error lower than 0.5% and response time lower than 13 ms.</span>

scholarly journals High gain boost converter with modified voltage multiplier for stand alone PV system

2019 ◽  
Vol 14 (1) ◽  
pp. 185
Author(s):  
Getzial Anbu Mani ◽  
A. K. Parvathy
Keyword(s):  
High Efficiency ◽  
Input Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Pv System ◽  
Boost Converters ◽  
Low Input ◽  
Voltage Multiplier ◽  
Photo Voltaic ◽  
Current Ripple

<p>Boost converters of high gain are used for photo voltaic systems to obtain high efficiency. These high gain Boost converters gives increased output voltage for a low input produces high outputs for low input voltage. The High gain boost converters have the following merits. Conduction losses input current ripple and stress across the switches is reduced while the efficiency is increases. The high gain of the converters with the above said merits is obtained by changing the duty cycle of switches accordingly .In this paper a boost converter working with interleaved concept along with a additional Nstage voltage Multiplier has been carried out by simulation using MATLAB/ simulink and the mathematical modeling of various parameters is also done.</p>

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