Design and implementation of a high-efficiency on- board battery charger for electric vehicles with frequency control strategy

2010 ◽  
Author(s):  
Jong-Soo Kim ◽  
Gyu-Yeong Choe ◽  
Hye-Man Jung ◽  
Byoung-Kuk Lee ◽  
Young-Jin Cho ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Control Strategy ◽  
High Efficiency ◽  
Frequency Control ◽  
Battery Charger ◽  
Design And Implementation

scholarly journals Analysis and Implementation of a Frequency Control DC–DC Converter for Light Electric Vehicle Applications

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1623
Author(s):  
Bor-Ren Lin
Keyword(s):  
Electric Vehicles ◽  
Output Voltage ◽  
Frequency Control ◽  
Input Voltage ◽  
Pulse Frequency ◽  
Switching Frequency ◽  
Battery Charger ◽  
Dc Microgrid ◽  
Load Voltage ◽  
Transportation Vehicle

In order to realize emission-free solutions and clean transportation alternatives, this paper presents a new DC converter with pulse frequency control for a battery charger in electric vehicles (EVs) or light electric vehicles (LEVs). The circuit configuration includes a resonant tank on the high-voltage side and two variable winding sets on the output side to achieve wide output voltage operation for a universal LEV battery charger. The input terminal of the presented converter is a from DC microgrid with voltage levels of 380, 760, or 1500 V for house, industry plant, or DC transportation vehicle demands, respectively. To reduce voltage stresses on active devices, a cascade circuit structure with less voltage rating on power semiconductors is used on the primary side. Two resonant capacitors were selected on the resonant tank, not only to achieve the two input voltage balance problem but also to realize the resonant operation to control load voltage. By using the variable switching frequency approach to regulate load voltage, active switches are turned on with soft switching operation to improve converter efficiency. In order to achieve wide output voltage capability for universal battery charger demands such as scooters, electric motorbikes, Li-ion e-trikes, golf carts, luxury golf cars, and quad applications, two variable winding sets were selected to have a wide voltage output (50~160 V). Finally, experiments with a 1 kW rated prototype were demonstrated to validate the performance and benefits of presented converter.

scholarly journals Design and Implementation of 3.3 kW On-Board Battery Charger for Electric Vehicles

2010 ◽  
Vol 15 (5) ◽  
pp. 369-375 ◽  
Author(s):  
Jong-Soo Kim ◽  
Gyu-Yeong Choe ◽  
Hye-Man Jung ◽  
Byoung-Kuk Lee ◽  
Young-Jin Cho
Keyword(s):  
Electric Vehicles ◽  
Battery Charger ◽  
Design And Implementation

A novel optimal frequency control strategy for an isolated wind–diesel hybrid system with energy storage devices

2016 ◽  
Vol 40 (6) ◽  
pp. 497-517 ◽  
Author(s):  
Nour EL Yakine Kouba ◽  
Mohamed Menaa ◽  
Mourad Hasni ◽  
Mohamed Boudour
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
Hybrid System ◽  
Control Strategy ◽  
Wind Farm ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Redox Flow Batteries ◽  
Load Frequency ◽  
Wind Farm Integration

This article presents the design of a new effective control strategy to enhance frequency stability of an isolated micro-grid-based wind–diesel hybrid system. The suggested control methodology involves load frequency control coordinated with battery energy storage systems. A recently developed meta-heuristic algorithm called multi-verse optimizer was applied to design an intelligent load frequency control scheme in the aim to handle the frequency fluctuation due to load changes and wind farm integration. The multi-verse optimizer algorithm was used to optimize the proportional–integral–derivative controller parameters for the load frequency control loop. The proposed controller was coordinated with two different kinds of storage system, which are redox flow batteries and electric vehicles. To demonstrate the effectiveness of the proposed control strategy, the simulation was performed under step load changes and then was extended with doubly-fed induction generator wind farm integration. Furthermore, to show the potential of multi-verse optimizer algorithm, a comparative study was done with other approaches available in the literature. In addition, robustness analysis was carried out. The obtained simulation results show that the proposed strategy is a very effective means for providing robust load frequency control controller and to avoid hybrid system instability. Furthermore, the system frequency can be improved using an optimal power management of the stored energy in both redox flow batteries and electric vehicles to compensate the load frequency control capability of the diesel groups, which allow to the possibility of integration of a large penetration of wind farms. In summary, the proposed control strategy may be helpful to identify the needed load frequency control capacity in the presence of dispersed generation’s units.

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.

Design of an 11 kW power factor correction and 10 kW ZVS DC/DC converter for a high-efficiency battery charger in electric vehicles

2012 ◽  
Vol 5 (9) ◽  
pp. 1714-1722 ◽  
Author(s):  
H. Bai ◽  
W. Guo ◽  
G. Szatmari-Voicu ◽  
N. Wang ◽  
J. Patterson ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Power Factor ◽  
High Efficiency ◽  
Power Factor Correction ◽  
Battery Charger
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