The State of Charge Estimating Methods for Battery: A Review

Chang, Wei-Ju

doi:10.1155/2013/953792

Cited by 459 publications

(267 citation statements)

References 36 publications

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“…However, 5C discharge gave the largest discharge power (approximate to 4800 W) and has the shortest discharging period (about 3150 s). The higher the depth of discharge, the shorter the discharge period [22]. Optimization using Genetic Alogrithm A power load was designed as a reference discharge power for this research [23].…”

Section: Model In Matlab/simulinkmentioning

confidence: 99%

An optimal lithium ion battery for plug-in hybrid electric recreational boat in discharging condition

Norbakyah¹,

Fung²,

Atiq³

et al. 2016

J. MECH. ENG. SCI.

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Plug-in Hybrid Electric Recreactional Boat (PHERB) is a new innovation of conventional boat for water transportation. In the PHERB powertrain, the main power source to drive the boat is the electric machine (EM). The primary energy source of EM is the battery. Battery is an important power energy supplier to PHERB and has two main conditions such as charging and discharging conditions. In this paper, the optimal design of the battery in a discharging condition is reported. The battery model is developed in MATLAB/Simulink environment together with a closed-loop feedback PI controller. By using a power demand curve as a reference for the model, the optimal performance of the discharging battery is obtained by using the genetic algorithm optimization. The results of optimal control parameters of the system are compared with the trial-and-error method. It has been found that the proposed optimal system design can improve the discharged battery's performance significantly.

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Section: Model In Matlab/simulinkmentioning

confidence: 99%

An optimal lithium ion battery for plug-in hybrid electric recreational boat in discharging condition

Norbakyah¹,

Fung²,

Atiq³

et al. 2016

J. MECH. ENG. SCI.

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show abstract

“…State of Charge (SOC) is the ratio of battery capacity at one time to the nominal capacity of the battery. The nominal capacity is the maximum capacity of the battery to store the charge [9]. The maximum capacity of the battery (SOC = 100%) is 180Ah [2].…”

Section: Run On Batterymentioning

confidence: 99%

Performance measurement of the upgraded Microcab-H4 with academic drive cycle

Rais

Fisher

Dhir

et al. 2016

CST

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The original Microcab-H4, a hybrid fuel cell car, was tested with Academic drive cycle. After several years, the car was upgraded and tested with the ECE 15 drive cycle. The result showed the car has higher energy efficiency. However, the result could not be compared to the original car due to different drive cycle test. This research was done to measure the performance and energy efficiency of the Upgraded Microcab-H4 with Academic drive cycle. The measure of car energy efficiency was done through four tests: Run on battery, run on battery and Ballard fuel cell, and run on battery, Ballard, and Horizon fuel cell. The energy efficiency was calculated based on the hydrogen consumption after 5 cycles. The lowest energy efficiency was run on battery and Ballard fuel cell with (1.01 km/MJ). The highest energy efficiency was run on battery, Ballard, and Horizon fuel cells (1.10 km/MJ), which is higher than previous tests.

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“…[37] with varying performance during different operating conditions. For a flywheel energy storage, the state-of-charge is directly measurable from the rotor speed.…”

Section: State-of-charge Estimationmentioning

confidence: 99%

Flywheel Energy Storage for Automotive Applications

et al. 2015

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A review of flywheel energy storage technology was made, with a special focus on the progress in automotive applications. We found that there are at least 26 university research groups and 27 companies contributing to flywheel technology development. Flywheels are seen to excel in high-power applications, placing them closer in functionality to supercapacitors than to batteries. Examples of flywheels optimized for vehicular applications were found with a specific power of 5.5 kW/kg and a specific energy of 3.5 Wh/kg. Another flywheel system had 3.15 kW/kg and 6.4 Wh/kg, which can be compared to a state-of-the-art supercapacitor vehicular system with 1.7 kW/kg and 2.3 Wh/kg, respectively. Flywheel energy storage is reaching maturity, with 500 flywheel power buffer systems being deployed for London buses (resulting in fuel savings of over 20%), 400 flywheels in operation for grid frequency regulation and many hundreds more installed for uninterruptible power supply (UPS) applications. The industry estimates the mass-production cost of a specific consumer-car flywheel system to be 2000 USD. For regular cars, this system has been shown to save 35% fuel in the U.S. Federal Test Procedure (FTP) drive cycle.

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The State of Charge Estimating Methods for Battery: A Review

Cited by 459 publications

References 36 publications

An optimal lithium ion battery for plug-in hybrid electric recreational boat in discharging condition

An optimal lithium ion battery for plug-in hybrid electric recreational boat in discharging condition

Performance measurement of the upgraded Microcab-H4 with academic drive cycle

Flywheel Energy Storage for Automotive Applications

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