High‐voltage conversion ratio dual‐input DC–DC converter operating in a wide duty cycle range and canceling input current ripple

2021 ◽  
Author(s):  
Pedram Chavoshipour Heris ◽  
Zahra Saadatizadeh ◽  
Mehran Sabahi ◽  
Xiaodong Liang
Keyword(s):  
High Voltage ◽  
Duty Cycle ◽  
Conversion Ratio ◽  
Input Current ◽  
Voltage Conversion ◽  
Current Ripple

scholarly journals Design, analysis, and implementation of a new high step-up DC–DC converter with low input current ripple and ultra-high-voltage conversion ratio

2020 ◽  
Vol 13 (15) ◽  
pp. 3243-3253
Author(s):  
Noor Hafidzah Jabarullah ◽  
Ettikkan Geetha ◽  
Manoharan Arun ◽  
Vera Vakhnina
Keyword(s):  
High Voltage ◽  
Design Analysis ◽  
Conversion Ratio ◽  
Input Current ◽  
Low Input ◽  
Voltage Conversion ◽  
Current Ripple ◽  
Ultra High Voltage

scholarly journals A dual-switch cubic SEPIC converter with extra high voltage gain

2021 ◽  
Vol 12 (1) ◽  
pp. 199
Author(s):  
Christophe Raoul Fotso Mbobda ◽  
Alain Moise Dikandé
Keyword(s):  
High Voltage ◽  
Duty Cycle ◽  
Magnetic Coupling ◽  
Conversion Ratio ◽  
Duty Ratio ◽  
Voltage Gain ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
Extra High Voltage ◽  
Voltage Conversion

To provide a high votage conversion ratio, conventional non-isolated DC-DC boost topologies, which have reduced voltage boost capability, have to operate with extremely high duty cycle ratio, higher than 0.9. This paper proposes a DC-DC converter which is mainly based on the narrow range of duty cycle ratio to achieve extra high voltage conversion gain at relatively reduced voltage stress on semiconductors. In addition, it does include any magnetic coupling structure. The structure of the proposed converter combines the new hybrid SEPIC converter and voltage multiplier cells. From the steady-state analysis, this converter has wide conversion ratio and cubic dependence with respect to the duty ratio and then, can increase the output voltage several times more than the conventional and quadratic converters at the same duty cycle ratio. However, the proposed dual-switch cubic SEPIC converter must withstand higher voltage stress on output switches. To overcome this drawback, an extension of the proposed converter is also introduced and discussed. The superiority of the proposed converter is mainly based on its cubic dependence on the duty cycle ratio that allows it to achieve extra high voltage gain at reduced voltage stress on semiconductors. Simulation results are shown and they corroborate the feasibility, practicality and validity of the concepts of the proposed converter.

An Isolated Bidirectional DC-DC Converter with High Voltage Conversion Ratio and Reduced Output Current Ripple

2021 ◽  
Author(s):  
Zhining Zhang ◽  
Boxue Hu ◽  
Yue Zhang ◽  
Jin Wang ◽  
Jacob Mueller ◽  
...  
Keyword(s):  
High Voltage ◽  
Conversion Ratio ◽  
Output Current ◽  
Voltage Conversion ◽  
Current Ripple

scholarly journals Coupled inductor‐based DC–DC converter with high voltage conversion ratio and smooth input current

2020 ◽  
Vol 13 (4) ◽  
pp. 733-743 ◽  
Author(s):  
Vijay Joseph Samuel ◽  
Gna Keerthi ◽  
Prabhakar Mahalingam
Keyword(s):  
High Voltage ◽  
Conversion Ratio ◽  
Input Current ◽  
Voltage Conversion

scholarly journals Transformerless high gain boost converter for low power applications with feedback control

2015 ◽  
Vol 16 (2) ◽  
pp. 244
Author(s):  
Md Yaseen ◽  
Dr. P Usha
Keyword(s):  
Feedback Control ◽  
Low Power ◽  
High Voltage ◽  
Duty Cycle ◽  
High Gain ◽  
Boost Converter ◽  
Input Current ◽  
Voltage Gain ◽  
Coupled Inductors ◽  
Current Ripple

A transformer-less boost converter which provides high voltage gain without utilizing transformer or coupled inductors and extreme duty cycle is proposed in this paper.  Also it is able to cancel the ripples in the input current at a preselected duty cycle, without increasing the number of components. The converter combines the features of boost converter and a three switch high voltage converter. At the input side, two inductors are interleaved for cancelling the input current ripple and at the output side switched capacitor voltage multiplier is used to increase the voltage gain. Feedback control is used to make the output voltage constant in spite of variation in the input or load or both i.e. both line and load regulation is accompanied. This proposed converter configuration helps eliminate the input current ripple and provides voltage deregulation for low power applications.

A high efficiency soft‐switched DC–DC converter with high voltage conversion ratio

2020 ◽  
Author(s):  
Hossein Shayeghi ◽  
Saeed Pourjafar ◽  
Seyed Majid Hashemzadeh ◽  
Frede Blaabjerg
Keyword(s):  
High Voltage ◽  
High Efficiency ◽  
Conversion Ratio ◽  
Voltage Conversion

scholarly journals Battery Charger with Improved Power Quality Cuk Derived Power Factor Correction Converter

2020 ◽  
Vol 9 (12) ◽  
pp. 318-322
Keyword(s):  
High Voltage ◽  
Power Factor ◽  
High Efficiency ◽  
Power Factor Correction ◽  
Conversion Ratio ◽  
Battery Charger ◽  
Cuk Converter ◽  
Control Techniques ◽  
Voltage Conversion ◽  
Ratio Reduction

In this paper, a single switch single stage switched inductor based cuk converter with power factor correction control techniques is proposed. The main features of the proposed converter is low current stress, high voltage conversion ratio, reduction of components, high efficiency, low THD, etc., The operation of the proposed converter is explained in several modes along with the design of the converter. The performance of the proposed converter with different loads such as resistive, battery and motor loads with CC and CV control is analyzed and various factors such as power factor, efficiency and THD are compared. The Simulation work is carried out in MATLAB/Simulink software.

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.

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