Ultra-Capacitors and Battery Management System of Electric Vehicles

2015 ◽  
Vol 781 ◽  
pp. 487-490 ◽  
Author(s):  
Sarawut Sungtum ◽  
Uthane Supatti
Keyword(s):  
Power Flow ◽  
Control Method ◽  
Battery Management System ◽  
Battery Management ◽  
Energy Feedback ◽  
Control Power ◽  
Braking System ◽  
System A ◽  
Bidirectional Converter ◽  
Dc Bus

This paper presents a bidirectional converter system to manage power transfer between ultra-capacitors (UC) and batteries for electric vehicle applications. A bidirectional buck-boost converter is used as a key converter to control power flow of the system. A control method is introduced to increase life cycle of both batteries and UC. Ultimately, the proposed converter system is able to (i) manage power between DC-bus, batteries and UC, (ii) control the current to flow between batteries and UC, (iii) maintains battery operation within charging limits, (iv) maintain the voltage at UC as setting value, (v) control the recharging at the UC by using the energy feedback from the battery instead of the common DC-bus and (vi) manage UC and battery to be recharged by using regenerative braking system. The validation of the proposed system is verified with analysis and simulation results by using MATLAB/Simulink.

scholarly journals Lithium-Ion Battery Management System: A Lifecycle Evaluation Model for the Use in the Development of Electric Vehicles

2018 ◽  
Vol 144 ◽  
pp. 04020 ◽  
Author(s):  
Ayush Sisodia ◽  
Jonathan Monteiro
Keyword(s):  
Life Cycle ◽  
Lithium Ion Battery ◽  
Electric Vehicles ◽  
Evaluation Model ◽  
Lithium Ion ◽  
Battery Life ◽  
Battery Management System ◽  
Battery Management ◽  
System A

The use of Lithium-ion batteries in the automobile sector has expanded drastically in the recent years. The foreseen increment of lithium to power electric and hybrid electric vehicles has provoked specialists to analyze the long term credibility of lithium as a transportation asset. To give a better picture of future accessibility, this paper exhibits a life cycle model for the key procedures and materials associated with the electric vehicle lithium-ion battery life cycle, on a worldwide scale. This model tracks the flow of lithium and energy sources from extraction, to generation, to on road utilization, and the role of reusing and scrapping. This life cycle evaluation model is the initial phase in building up an examination model for the lithium ion battery production that would enable the policymakers to survey the future importance of lithium battery recycling, and when in time setting up a reusing foundation be made necessary.

Rapidly Charging Battery Systems

2010 ◽  
Author(s):  
Lennon Rodgers ◽  
Paul Karplus ◽  
Radu Gogoana ◽  
Mike Nawrot
Keyword(s):  
High Power ◽  
Integrated Circuit ◽  
Battery Management System ◽  
Battery Management ◽  
Accelerated Degradation ◽  
System A ◽  
Battery Systems ◽  
In Series ◽  
A Cell ◽  
Final System

For rapidly charging battery systems to be fully realized, there must be [i] a cell chemistry with an adequate energy density that accepts high power charging without overheating and accelerated degradation, [ii] electricity sources that can supply the necessary charging power, [iii] battery pack designs that can handle the large charging currents while not drastically decreasing the mass and volumetric energy densities, and [iv] high power chargers. This study first explores the feasibility of these elements, and presents a particular design that was demonstrated on an electric motorcycle. The final system consists of four battery modules, totaling 1.6 kWatt-hours, a 10 kWatt charger, and an integrated circuit-based Battery Management System. A single module was rapidly charged to 90% capacity in 15 minutes, and all four modules connected in series were rapidly charged to 40% capacity. Future tests will rapidly charge the 4 modules to >90% capacity.

scholarly journals Strategi Pengisian Baterai pada Sistem Panel Surya Standalone Berbasis Kontrol PI Multi-Loop

2021 ◽  
Vol 13 (1) ◽  
pp. 25-33
Author(s):  
Khusnul Hidayat ◽  
Mohammad Chasrun Hasani ◽  
Nur Alif Mardiyah ◽  
Machmud Effendy
Keyword(s):  
Control Strategy ◽  
Power Flow ◽  
Control Method ◽  
Life Time ◽  
Balance Of Power ◽  
High Current ◽  
Loop Control ◽  
Maximum Charge ◽  
Charging Current ◽  
Dc Bus

This study discusses the power control strategy in a standalone photovoltaic-battery hybrid system. The life-time of the battery will be shorter if the battery is often charged with high current and exceeds its State-of-Charge (SoC). Therefore, a control method is needed to control the power flow on the DC bus and the charging current as well as the SoC of the battery so that the battery has a long life-time. The proposed system uses two dc-dc converters to connect photovoltaic (PV) and lead-acid batteries to the load. The unidirectional DC-DC converter is used as the interface between the PV and the DC bus, the bidirectional DC-DC converter is used as the interface between the battery and the DC bus. The control strategy plays a role in controlling the power flow between the converter and the load to maintain the balance of power in the system and controlling the battery to support PV when the available PV power is not enough to meet the load. The multi-loop control strategy is proposed in this study, one of the loops is used to maintain the SoC of the battery in order to control the PV output power to avoid over-charging. Another loop is used to ensure the balance of the system's power when the battery is charging at its maximum charge current. The proposed control system is implemented without requiring any conditions for the control to operate. The simulation results show that the proposed multi-loop control can control the power flow in the system while maintaining the maximum charging current and battery SoC limits.

CAN-Based Monitor and Control Platform for Battery Management System

2011 ◽  
Vol 383-390 ◽  
pp. 3466-3471
Author(s):  
Wen Tao Sun ◽  
Wei Liu ◽  
Han Wen Sun ◽  
Jin Feng Gong
Keyword(s):  
Control Strategy ◽  
Management System ◽  
Can Bus ◽  
Battery Management System ◽  
Battery Management ◽  
Well Performance ◽  
System A ◽  
And Control ◽  
Hardware Test ◽  
Monitor And Control

In this paper, based on the characteristics of battery management system, a monitor and control platform for battery management system was designed, using Kvaser Leaf bus analyzer and CAN bus technology. Test shows the platform has well performance in data monitoring, control strategy optimization and hardware test.

scholarly journals Performance of Bidirectional Converter Based On Grid Application

2018 ◽  
Vol 12 (3) ◽  
pp. 1203 ◽  
Author(s):  
D. Vidhyalakshmi ◽  
K. Balaji
Keyword(s):  
Distribution System ◽  
Power Flow ◽  
Control Method ◽  
Photovoltaic System ◽  
Reverse Direction ◽  
Power Flow Control ◽  
Bidirectional Converter ◽  
Regulation Method ◽  
And Function ◽  
Cycle Regulation

<p>A transformer less bidirectional inverter fed grid-connected system has implemented and function as both forward and reverse power flow by battery and photovoltaic system. In dc distributed system has utilized the renewable energy such as PV, wind, battery and fuel system. In conventional method the dc bus regulation by using the one line cycle regulation method and one-sixth line cycle regulation. In proposed method utilize both converter and inverter operates bidirectional direction and utilize both solar and PV source. The solar energy had less cost, pollution less energy generation and fed into the bidirectional converter. The PI-based control method is used to operate both forward and reverse direction. The model predictive control method is used in the bidirectional inverter for control the current and voltage of the grid-connected system. The power flow control in the distribution system by the constant power loads such as dc/dc converter because conduct the negative dynamic impedance. The three-phase bidirectional inverter is designed and implemented in MATLAB/Simulink environment.</p>

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