A step‐up dc–dc topology with high gain, continuous input current, and low‐voltage stress on power switch

2021 ◽  
Author(s):  
Payam Eshtiaghi ◽  
Alireza Lahooti Eshkevari ◽  
Ali Mosallanejad
Keyword(s):  
Low Voltage ◽  
High Gain ◽  
Input Current ◽  
Power Switch ◽  
Voltage Stress ◽  
Continuous Input

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 High Gain DC-DC Converter Integrating Dickson Charge Pump with Coupled Inductor Technique

2021 ◽  
Vol 7 (6) ◽  
pp. 272-277
Author(s):  
P. Nithin and Dr. R. Rajeswari
Keyword(s):  
High Voltage ◽  
Low Voltage ◽  
High Gain ◽  
Voltage Gain ◽  
Power Switch ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
Input Side ◽  
State Resistance ◽  
Current Ripple

In this paper, a novel high voltage gain DC-DC converter based on coupled inductor and voltage multiplier technique is proposed. The benefits of the proposed converter are ultra-high voltage gain, low voltage stress across the power switch and very low input current ripple by employing a low current ripple structure (LCR) at the input side. A low on state resistance (RDS(on)) of the power switch can be employed since the voltage stress is a maximum of 25% of the output voltage and the conduction losses of the switch is also reduced. Design of a 1.9kW, 48V at the low voltage side and 430V at the high voltage side is done and verified by simulation. Simulation results show an efficiency of over 93% when operating in continuous conduction mode (CCM).

scholarly journals Novel High-Efficiency High Step-Up DC–DC Converter with Soft Switching and Low Component Voltage Stress for Photovoltaic System

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1112
Author(s):  
Yu-En Wu ◽  
Jyun-Wei Wang
Keyword(s):  
High Voltage ◽  
Output Voltage ◽  
High Efficiency ◽  
Low Voltage ◽  
Leakage Inductance ◽  
Power Switch ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Voltage Stress ◽  
Voltage Doubler

This study developed a novel, high-efficiency, high step-up DC–DC converter for photovoltaic (PV) systems. The converter can step-up the low output voltage of PV modules to the voltage level of the inverter and is used to feed into the grid. The converter can achieve a high step-up voltage through its architecture consisting of a three-winding coupled inductor common iron core on the low-voltage side and a half-wave voltage doubler circuit on the high-voltage side. The leakage inductance energy generated by the coupling inductor during the conversion process can be recovered by the capacitor on the low-voltage side to reduce the voltage surge on the power switch, which gives the power switch of the circuit a soft-switching effect. In addition, the half-wave voltage doubler circuit on the high-voltage side can recover the leakage inductance energy of the tertiary side and increase the output voltage. The advantages of the circuit are low loss, high efficiency, high conversion ratio, and low component voltage stress. Finally, a 500-W high step-up converter was experimentally tested to verify the feasibility and practicability of the proposed architecture. The results revealed that the highest efficiency of the circuit is 98%.

High Step-up DC/DC Converter with Low Input Current Ripple and Low Voltage Stress on Semiconductors

2021 ◽  
Author(s):  
Saed Mahmoud Alilou ◽  
Mohammad Maalandish ◽  
Soheil Nouri ◽  
Seyed Hossein Hosseini
Keyword(s):  
Low Voltage ◽  
Input Current ◽  
Low Input ◽  
Voltage Stress ◽  
Current Ripple

scholarly journals A Non-Inverting High Gain DC-DC Converter With Continuous Input Current

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 54710-54721
Author(s):  
Arshad Mahmood ◽  
Mohammad Zaid ◽  
Javed Ahmad ◽  
Mohd Anas Khan ◽  
Shahrukh Khan ◽  
...  
Keyword(s):  
High Gain ◽  
Input Current ◽  
Continuous Input

scholarly journals Dynamic Sliding Mode Evolution PWM Controller for a Novel High-Gain Interleaved DC-DC Converter in PV System

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Taizhou Bei ◽  
Ping Wang ◽  
Liu Yang ◽  
Zhe Zhou
Keyword(s):  
Sliding Mode ◽  
High Gain ◽  
Input Current ◽  
The Novel ◽  
Pv System ◽  
Control Approach ◽  
Voltage Stress ◽  
Interleaved Boost Converter ◽  
Short Time ◽  
Dynamic Sliding Mode

Considering the disadvantages of the traditional high-gain DC-DC converter such as big size, high voltage stress of switches, and large input current ripple, a novel high-gain interleaved boost converter with coupled-inductor and switched-capacitor was proposed correspondingly and the operation principle together with the steady-state analysis of this converter was also described. Besides, a new control approach-dynamic sliding mode evolution PWM controller (DSME PWM) for the novel topological converter based on both dynamic evolution and sliding mode control was also presented. From the simulation results and experimental validation the proposed converter can fulfill high-gain boost, low ripple of both the input current and the output voltage. Furthermore, MPPT technique can be also achieved in a short time by simulation. The efficiency and stability of the converter proposed in this paper can be improved.

scholarly journals High-Gain Switched-Capacitor DC-DC Converter with Low Count of Switches and Low Voltage Stress of Switches

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Robert Stala ◽  
Maciej Chojowski ◽  
Zbigniew Waradzyn ◽  
Andrzej Mondzik ◽  
Szymon Folmer ◽  
...  
Keyword(s):  
Low Voltage ◽  
High Gain ◽  
Switched Capacitor ◽  
Voltage Stress
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