scholarly journals Design and Development of a Constant Current Constant Voltage Fast Battery Charger for Electric Vehicles

2021 ◽  
Author(s):  
Abdulkarim Nasir
Keyword(s):  
Electric Vehicles ◽  
Constant Current ◽  
Constant Voltage ◽  
Battery Charger ◽  
Design And Development

scholarly journals Modular Battery Charger for Light Electric Vehicles

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 774 ◽  
Author(s):  
Andrei Blinov ◽  
Ievgen Verbytskyi ◽  
Denys Zinchenko ◽  
Dmitri Vinnikov ◽  
Ilya Galkin
Keyword(s):  
Electric Vehicles ◽  
High Efficiency ◽  
Optimal Number ◽  
Constant Current ◽  
Energy Storage And Conversion ◽  
Battery Charger ◽  
Low Profile ◽  
Interleaved Structure ◽  
Conversion Technologies ◽  
Voltage Conversion

Rapid developments in energy storage and conversion technologies have led to the proliferation of low- and medium-power electric vehicles. Their regular operation typically requires an on-board battery charger that features small dimensions, high efficiency and power quality. This paper analyses an interleaved step-down single-ended primary-inductor converter (SEPIC) operating in the discontinuous conduction mode (DCM) for charging of battery-powered light electric vehicles such as an electric wheelchair. The required characteristics are achieved thanks to favourable arrangement of the inductors in the circuit: the input inductor is used for power factor correction (PFC) without additional elements, while the other inductor is used to provide galvanic isolation and required voltage conversion ratio. A modular interleaved structure of the converter helps to implement low-profile converter design with standard components, distribute the power losses and improve the performance. An optimal number of converter cells was estimated. The converter uses a simple control algorithm for constant current and constant voltage charging modes. To reduce the energy losses, synchronous rectification along with a common regenerative snubber circuit was implemented. The proposed charger concept was verified with a developed 230 VAC to 29.4 VDC experimental prototype that has proved its effectiveness.

Optimized charging of lithium-ion battery for electric vehicles: Adaptive multistage constant current–constant voltage charging strategy

2020 ◽  
Vol 146 ◽  
pp. 2688-2699 ◽  
Author(s):  
Yunjian Li ◽  
Kuining Li ◽  
Yi Xie ◽  
Jiangyan Liu ◽  
Chunyun Fu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Electric Vehicles ◽  
Lithium Ion ◽  
Constant Current ◽  
Constant Voltage ◽  
Charging Strategy

scholarly journals Design and Implementation of Buck Converter for Fast Charging with Fuzzy Logic

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Indhana Sudiharto ◽  
Moch. Igam Rahadyan ◽  
Ony Asrarul Qudsi
Keyword(s):  
Output Voltage ◽  
Buck Converter ◽  
Constant Current ◽  
Constant Voltage ◽  
Battery Charger ◽  
Output Current ◽  
Charging Rate ◽  
Battery Capacity ◽  
Fast Charging ◽  
Charging Current

This research presents a battery charger design that can charge faster than using a PWM type solar charge controller (SCC). SCC is often operated when the battery capacity is 80% so that the charging current that can be provided is only 10% to 20% of the battery capacity. The battery charging method applied in this study uses the principle of fast charging by adjusting the value of the current and the output voltage value of the buck converter. Fast charging has its own characteristic, obviously, the charging rate that is greater than the usual charging method, which is up to 1C of the battery capacity. The principle of fast charging in this study uses the constant current / constant voltage method. This converter is designed with the ability to produce current by the charging rate of 1C from a 12Ah battery capacity of 12 A and an output voltage of 16.8 V. To ensure that the output of the converter matches the setpoint, the duty cycle value is adjusted using fuzzy control. Based on the results obtained from the simulation, the control of this study obtained an output current 12  Amperes with error ripple current around 8.3%. The SOC on this battery increased by 75.74% in 45 minutes.

scholarly journals A Smart Two-Stage Charging Strategy Implemented on a PV Module Array with a Simple MPPT for LiFePO4 Batteries

2018 ◽  
Author(s):  
Pi-Yun Chen ◽  
Kuei-Hsiang Chao ◽  
Yu-Sheng Tsai
Keyword(s):  
High Speed ◽  
Current Mode ◽  
Buck Converter ◽  
Constant Current ◽  
Storage Device ◽  
Photovoltaic Module ◽  
Constant Voltage ◽  
Battery Charger ◽  
Two Stage ◽  
Charging Strategy

This paper aims to present a smart high speed battery charger, powered by a photovoltaic module array, for a LiFePO4 battery as a solar energy storage device. With a battery charging strategy, the presented battery charger involves a Buck converter as the core equipped with a simple maximum power point (MPP) tracker. Considering complexity reduction and easy hardware implementation, a constant voltage MPP tracking approach is adopted such that the maximum amount of output power can be delivered to the load in response to an arbitrary change in the solar radiation. A smart two-stage charging strategy, with a constant current mode followed by a constant voltage mode, is employed in such a way that the battery charge process can be accelerated largely, while the damage caused by overcharging can be prevented. In the end, the performance of this proposal is validated experimentally.

scholarly journals Control of a battery charger for electric vehicles with unity power factor

2021 ◽  
Vol 2 (1) ◽  
pp. 32-44
Author(s):  
Federico M. Serra ◽  
Cristian H. De Angelo
Keyword(s):  
Electric Vehicles ◽  
Power Factor ◽  
Closed Loop ◽  
Constant Current ◽  
Nonlinear Controller ◽  
Battery Charger ◽  
Unity Power Factor ◽  
Single Model ◽  
Electric Vehicle Battery ◽  
Battery Bank

A nonlinear controller for an electric vehicle battery charger is proposed in this work. The controller allows charging the battery bank with constant current and constant voltage charging profile, while ensuring unity power factor and low distortion in the grid current. A single model is made for the complete system and the controller is designed using interconnection and damping assignment. The proposed controller ensures the closed-loop stability and allows decoupling the system avoiding disturbances in the electric grid and battery bank. The proposal is validated with simulation results.

scholarly journals Constant voltage and constant current control implementation for electric vehicles (evs) wireless charger

2018 ◽  
Vol 1007 ◽  
pp. 012054
Author(s):  
Marojahan Tampubolon ◽  
Laskar Pamungkas ◽  
Yao Ching Hsieh ◽  
Huang Jen Chiu
Keyword(s):  
Electric Vehicles ◽  
Current Control ◽  
Constant Current ◽  
Constant Voltage ◽  
Control Implementation
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