scholarly journals A New Off-Board Electrical Vehicle Battery Charger: Topology, Analysis and Design

Designs ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 51
Author(s):  
Farzad Mohammadzadeh Shahir ◽  
Meysam Gheisarnejad ◽  
Mahdieh S. Sadabadi ◽  
Mohammad-Hassan Khooban
Keyword(s):  
Current Mode ◽  
High Energy ◽  
Theoretical Concepts ◽  
Charging Infrastructure ◽  
Analysis And Design ◽  
Operating Modes ◽  
Battery Chargers ◽  
Electrical Vehicle ◽  
Continuous Current ◽  
Continuous Current Mode

The extensive use of electric vehicles (EVs) can reduce concerns about climate change and fossil fuel shortages. One of the main obstacles to accepting EVs is the limitation of charging stations, which consists of high-charge batteries and high-energy charging infrastructure. A new transformer-less topology for boost dc-dc converters with higher power density and lower switch stress is proposed in this paper, which may be a suitable candidate for high-power fast-charging battery chargers of EVs. Throughout this paper, two operating modes of the proposed converter, continuous current mode (CCM) and discontinuous current mode (DCM), are analyzed in detail. Additionally, critical inductances and design considerations for the proposed converter are calculated. Finally, real-time verifications based on hardware-in-loop (HiL) simulation are carried out to assess the correctness of the proposed theoretical concepts.

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.

Multimode step‐up bidirectional series resonant DC/DC converter using continuous current mode

2016 ◽  
Vol 9 (4) ◽  
pp. 710-718 ◽  
Author(s):  
Federico Martin Ibanez ◽  
Jose Martin Echeverria ◽  
Daniel Astigarraga ◽  
Luis Fontan
Keyword(s):  
Current Mode ◽  
Series Resonant ◽  
Continuous Current ◽  
Continuous Current Mode

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

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