scholarly journals Formulation and Analysis of Single Switch High Gain Hybrid DC to DC Converter for High Power Applications

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2445
Author(s):  
Sathiya Ranganathan ◽  
Arun Noyal Doss Mohan
Keyword(s):  
Conversion Efficiency ◽  
High Voltage ◽  
High Power ◽  
High Gain ◽  
Input Current ◽  
Lower Efficiency ◽  
Flyback Converter

The necessity for DC−DC converters has been rapidly increasing due to the emergence of RES-based electrification. However, the converter designed so far exhibits the drawbacks of lower efficiency and non-compactness in size. Hence, to rectify this problem, the new topology of a flyback converter for PV application is proposed in this work. The proposed converter exhibits reduced ripple in input current and enhances the conversion efficiency. Finally, the efficiency of this proposed converter is verified using MATLAB. The results indicate that this projected topology can be suitable for high voltage DC applications.

scholarly journals Interleaved quadratic boost converter integrated with Dickson voltage multiplier with energy storage for high power photo voltaic applications

2021 ◽  
Vol 12 (2) ◽  
pp. 957
Author(s):  
Dhanaraj Amudhavalli ◽  
Nalin Kant Mohanty ◽  
Ashwin Kumar Sahoo
Keyword(s):  
Energy Storage ◽  
High Power ◽  
Input Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Photovoltaic System ◽  
Input Current ◽  
Voltage Multiplier ◽  
Power Load ◽  
Photo Voltaic

In this paper interleaved quadratic boost converter with Dickson voltage multiplier is proposed. Photovoltaic system is connected to high power load through the proposed converter. Structure of this high gain interleaved converter comprised of two stages: interleaved quadratic boost converter stage and Dickson voltage multiplier stage. Interleaved quadratic boost converter is a parallel combination of two quadratic boost converter. The interleaving increases frequency of converter that could be filtered using small capacitors, making input current smoother than the current of conventional quadratic boost converter. Thus, interleaved circuit minimizes current ripple present in input current, cascading of voltage multiplier cell increases the gain voltage ratio of converter making it suitable for high power, high voltage gain photo voltaic applications. Stress voltage of the switches and reverse recovery problems gets reduced, thereby reducing EMI problems. 300W prototype capable of increasing 24V input voltage to 400V output voltage is designed and results tested using MATLAB/Simulink software. Hardware prototype is also implemented to verify simulation results. Also, application of this converter in integrated energy storage is demonstrated.

scholarly journals Design and Analysis of a High-Gain Step-Up/Down Modular DC–DC Converter with Continuous Input Current and Decreased Voltage Stress on Power Switches and Switched-Capacitors

2021 ◽  
Vol 13 (9) ◽  
pp. 5243
Author(s):  
Maysam Abbasi ◽  
Ehsan Abbasi ◽  
Li Li ◽  
Behrouz Tousi
Keyword(s):  
High Voltage ◽  
Output Voltage ◽  
Renewable Energy Sources ◽  
High Gain ◽  
Voltage Regulation ◽  
Input Current ◽  
Switched Capacitors ◽  
Voltage Stress ◽  
Power Switches ◽  
Continuous Input

Due to concerns, such as global warming and depletion of fossil fuels, countries are forced to integrate energy storage devices (ESSs) and renewable energy sources (RESs), such as photovoltaic (PV) systems, wind turbines and fuel cells, into their power networks. Here, a new high gain DC–DC converter with step-up/down ability is proposed for modern applications. Since this converter provides high variable voltage gain, it can be employed for output voltage regulation purposes in RESs such as solar panels. Additionally, this converter provides a remarkable reduction in voltage stress on the switched capacitors and power switches. Due to its modular structure obtained by employing switched-capacitors (SCs), it is possible for this topology to gain a very high voltage conversion ratio using low duty-cycles produced by a simple and straightforward control system. To be specific, the more the number of SC cells increase, the more the output voltage increases. The proposed converter has a continuous input current allowing to extract the maximum power from RESs like PV panels. It should be noted that the application of this converter is not limited to the aforementioned ones since it can be used in various applications needing high voltage gains such as generating the desired voltage level in high voltage direct current (HVDC) systems especially their transmission lines. For validating the performance of the proposed structure, comprehensive comparisons and experimental results are presented.

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.

An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor

2020 ◽  
Vol 10 (10) ◽  
pp. 44-51
Author(s):  
Yury Yu. SKOROKHOD ◽  
◽  
Sehgey I. VOL’SKIY ◽  
Keyword(s):  
High Voltage ◽  
Single Phase ◽  
Input Current ◽  
Voltage Converter ◽  
Input Unit ◽  
Power Circuit ◽  
Electrical Systems ◽  
Static Converters ◽  
Technical Requirements

The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.

Sign in / Sign up

Export Citation Format

Share Document