scholarly journals A Zero Input Current Ripple ZVS/ZCS Boost Converter with Boundary-Mode Control

Energies ◽  
2014 ◽  
Vol 7 (10) ◽  
pp. 6765-6782 ◽  
Author(s):  
Ching-Ming Lai ◽  
Ming-Ji Yang ◽  
Shih-Kun Liang
Keyword(s):  
Boost Converter ◽  
Input Current ◽  
Mode Control ◽  
Boundary Mode ◽  
Current Ripple

scholarly journals Optimal Operation of the Voltage-Doubler Boost Converter through an Evolutionary Algorithm

Mathematics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 423
Author(s):  
Cesar Ibarra-Nuño ◽  
Alma Rodríguez ◽  
Avelina Alejo-Reyes ◽  
Erik Cuevas ◽  
Juan M. Ramirez ◽  
...  
Keyword(s):  
Evolutionary Algorithm ◽  
Numerical Optimization ◽  
Boost Converter ◽  
Optimal Operation ◽  
Input Current ◽  
Voltage Gain ◽  
Duty Cycles ◽  
Switching Functions ◽  
Voltage Doubler ◽  
Current Ripple

This manuscript presents the numerical optimization (through a mathematical model and an evolutionary algorithm) of the voltage-doubler boost converter, also called the series-capacitor boost converter. The circuit is driven by two transistors, each of them activated according to a switching signal. In the former operation, switching signals have an algebraic dependence from each other. This article proposes a new method to operate the converter. The proposed process reduces the input current ripple without changing any converter model parameter, only the driving signals. In the proposed operation, switching signals of transistors are independent of each other, providing an extra degree of freedom, but on the other hand, this produces an infinite number of possible combinations of duty cycles (the main parameter of switching signals) to achieve the desired voltage gain. In other words, this leads to a problem with infinite possible solutions. The proposed method utilizes an evolutionary algorithm to determine the switching functions and, at the same time, to minimize the input current ripple of the converter. A comparison made between the former and the proposed operation shows that the proposed process achieves a lower input current ripple while achieving the desired voltage gain.

scholarly journals Modified Cascaded Z-Source High Step-Up Boost Converter

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1932
Author(s):  
Navid Salehi ◽  
Herminio Martínez-García ◽  
Guillermo Velasco-Quesada
Keyword(s):  
High Voltage ◽  
Boost Converter ◽  
Experimental Results ◽  
Input Current ◽  
Voltage Gain ◽  
Low Input ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
Photovoltaic Applications ◽  
Current Ripple

To improve the voltage gain of step-up converters, the cascaded technique is considered as a possible solution in this paper. By considering the concept of cascading two Z-source networks in a conventional boost converter, the proposed topology takes the advantages of both impedance source and cascaded converters. By applying some modifications, the proposed converter provides high voltage gain while the voltage stress of the switch and diodes is still low. Moreover, the low input current ripple of the converter makes it absolutely appropriate for photovoltaic applications in expanding the lifetime of PV panels. After analyzing the operation principles of the proposed converter, we present the simulation and experimental results of a 100 W prototype to verify the proposed converter performance.

Analysis of the Input Current-Ripple in the Series-Capacitor Boost Converter

2020 ◽  
pp. 1-1
Author(s):  
Julio Rosas-Caro ◽  
Gerardo Escobar ◽  
Jesus Elias Valdez-Resendiz ◽  
Jonathan Carlos Mayo Maldonado ◽  
Francisco Beltran-Carbajal ◽  
...  
Keyword(s):  
Boost Converter ◽  
Input Current ◽  
Current Ripple ◽  
Series Capacitor

A New Isolated Boost Converter with Coupling Inductors

2013 ◽  
Vol 392 ◽  
pp. 394-397
Author(s):  
Hai Ming Zhang ◽  
Xiao Zhong Liao
Keyword(s):  
Boost Converter ◽  
Input Current ◽  
Zero Voltage Switching ◽  
Zero Voltage ◽  
Diode Voltage ◽  
Current Ripple ◽  
Voltage Switching

This paper proposes a new improved zero-voltage switching isolated boost converter with coupling inductors. With the traditional advantages of smaller input current ripple, low diode voltage rating, and low transformer turns ratio of boost half bridge topology [ being retained, the proposed converter makes it much easier to realize zero voltage switching of primary switches compared with conventional converters.

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