scholarly journals Significant Increase in Fuel Efficiency of Diesel Generators with Lithium-Ion Batteries Documented by Economic Analysis

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6904
Author(s):  
Vedat Kiray ◽  
Mehmet Orhan ◽  
John Nwankwo Chijioke
Keyword(s):  
Energy Efficiency ◽  
Economic Analysis ◽  
Fuel Efficiency ◽  
Cost Savings ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Diesel Generator ◽  
Battery System ◽  
Li Ion ◽  
Diesel Generators

As the global diesel generator market grows and generators gain wider use, various methods are being developed to increase their energy efficiency. One of these methods entails integrating a Li-ion battery with diesel generators (DGs). This method did not attract attention until recently because it was economically unappealing. A significant decrease in the price of Li-ion batteries in recent years has made hybrid diesel generator/Li-ion battery systems more viable. We present a model-based economic analysis of a hybrid DG/Li-ion battery system with the aim of increasing the energy efficiency of diesel power generators. Special blocks were developed for calculations and comparisons with a MATLAB Simulink model, including 457 kW DG operating modes with/without a Li-ion battery. We simulated the system in order to calculate the conditions required to achieve savings in fuel and the level of savings, in addition to the payback time of the Li-ion battery. Furthermore, we present the additional savings gained by postponing the investment in a new diesel generator thanks to the Li-ion battery. Based on our findings, the payback period of the Li-ion battery system varies between 2.5 and 4 years. According to our 12-year economic analysis, the cost savings resulting from postponing new investments can reach 40% of the profit gained from the savings during such a period.

Role of Lithium-Ion Batteries in Increasing the Operational Safety of Offshore Service Vessels

2021 ◽  
Vol 55 (6) ◽  
pp. 174-185
Author(s):  
Narayanaswamy Vedachalam ◽  
Bala Naga Jyothi Vandavasi
Keyword(s):  
Fuel Efficiency ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Spinning Reserve ◽  
Battery System ◽  
Operational Conditions ◽  
Operational Safety ◽  
Li Ion ◽  
Safety And Environment

Abstract For ensuring the operational safety of offshore service vessels (OSVs) during critical operations, marine classification agencies recommend operating redundant diesel generators (DGs) as a spinning reserve for dynamic positioning (DP) systems. In view of the reduced fuel efficiency and increased emissions of DG sets when operated at low loads, lithium-ion (Li-ion) batteries are preferred as a green choice to serve the class-recommended DP power backup for 12 min. Based on the on-demand reliability analysis and Li-ion battery failure models, it is identified that an OSV with a 1.6-MW‐capacity DP system requires 538 kWh of Li-ion battery power to reliably replace a spinning DG set in serving power backup for 12 min. Based on the IEC61508/11 health, safety, and environment framework, the methodology to identify the OSV risk under various operational conditions and the battery system minimum maintenance interval requirements to meet various safety integrity levels are described.

Energy Equalization Circuit with Multiple Primary Windings for Li-Ion Battery System

2013 ◽  
Vol 380-384 ◽  
pp. 3374-3377
Author(s):  
San Xing Chen ◽  
Ming Yu Gao ◽  
Guo Jin Ma ◽  
Zhi Wei He
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Battery Pack ◽  
Li Ion Battery ◽  
Battery System ◽  
Multiple Primary ◽  
In Series ◽  
A Cell ◽  
Li Ion ◽  
Number Of Cells

In this paper, a cell equalization circuit based on the Flyback topology is proposed for the Lithium-ion battery pack. Multiple transformers are employed in this circuit, equal to the number of cells in the pack. All the primary windings are coupled in series to provide the equalizing energy form the whole battery pack to the specific under charged cells. The structure and principle of the circuit is discussed, finally a prototype of four cells is presented to show the outstanding equalization efficiency of the proposed circuit.

Scribable multi-walled carbon nanotube-silicon nanocomposites: a viable lithium-ion battery system

Nanoscale ◽  
2015 ◽  
Vol 7 (8) ◽  
pp. 3504-3510 ◽  
Author(s):  
Rigved Epur ◽  
Madhumati Ramanathan ◽  
Moni K. Datta ◽  
Dae Ho Hong ◽  
Prashanth H. Jampani ◽  
...  
Keyword(s):  
Multiwall Carbon Nanotubes ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Battery System ◽  
System P ◽  
Multi Walled Carbon Nanotube ◽  
Vertically Aligned ◽  
Li Ion ◽  
Viable Approach ◽  
Multiwall Carbon

A novel electrode fabrication technique involving a manual scribing action of vertically aligned silicon coated multiwall carbon nanotubes (VASCNTs) on a copper foil have been developed as a viable approach to Li-ion battery electrodes.

scholarly journals Narrow Band State of Charge (SOC) Control Strategy for Hybrid Container Cranes

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 743 ◽  
Author(s):  
Sheron Bolonne ◽  
Dedduwa Chandima
Keyword(s):  
Life Span ◽  
Narrow Band ◽  
State Of Charge ◽  
Li Ion Battery ◽  
Variable Speed ◽  
Diesel Generator ◽  
Battery System ◽  
Li Ion ◽  
Battery Bank ◽  
Soc Control

This paper evaluates possibility of using a new hybrid system based on variable speed diesel generator (VSDG), Li-ion battery bank and supercapacitor bank (SC) for a rubber tire gantry crane (RTGC) used in container terminals. Existing commercial hybrid systems face difficulties producing high efficiencies, higher life span, and lower initial investment cost due to inheriting characteristics of batteries and supercapacitors. In the proposed power system, a variable speed diesel generator act as the principal energy source, while a Li-ion battery bank and SC bank act as an energy storage system. The battery supports the diesel generator during steady demand and further, it absorbs a part of energy during regeneration. The energy management strategy, control the power flow from different sources while maintaining battery state of charge (SOC) level within a narrow band. Unlike most battery systems, this narrow band operation of battery system increases its life span while reducing capacity fade. The originality of this study can be emphasized from this narrow band SOC control technique. Simulation results for real operational load cycles are presented showing a stable system operating under defined current limits which can enhance lifetime of battery system and increase fuel saving by downsizing 400 kW constant speed diesel generator to 200 kW VSDG.

ADAPTIVE ALGORITHMS OF CONTROLLING THE SMART LI-ION BATTERY CONTROLLER

2018 ◽  
pp. 104-110
Author(s):  
I. A. Borovoy ◽  
O. V. Danishevskiy ◽  
A. V. Parfenov
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Electric Energy ◽  
Lithium Ion ◽  
Control Device ◽  
Control Algorithms ◽  
Battery System ◽  
Electronic Control Device ◽  
Li Ion ◽  
Cell Balancing

The article substantiates the necessity of organizing the control system of modern lithium-ion batteries. Passive and active methods of cell balancing are described. The method of increase of efficiency of modes of accumulation of electric energy by means of the special electronic control device (the intellectual controller) and its further use for power supply of the functional equipment is considered. The structure of the intelligent controller as a part of the autonomous power supply system with the description of its main functional units and purpose is presented. Practical results of application in the intellectual controller of original adaptive control algorithms defining modes of operation of lithium-ion drives depending on various environmental conditions are resulted. The results of the analysis obtained by the results of experimental operation of the battery system, reflecting the qualitative and quantitative advantages of the proposed method.

Enhancing Co/Co2VO4 Li-ion Battery Anode Performances via 2D-2D Heterostructure Engineering

Nanoscale ◽  
2021 ◽  
Author(s):  
Kun Wang ◽  
Yongyuan Hu ◽  
Jian Pei ◽  
Fengyang Jing ◽  
Zhongzheng Qin ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Output Voltage ◽  
High Capacity ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Li Ion ◽  
Battery Anode

High capacity Co2VO4 becomes a potential anode material for lithium ion batteries (LIBs) benefiting from its lower output voltage during cycling than other cobalt vanadates. However, the application of this...

Magneto-ionic phase control in a quasi-layered donor/acceptor metal–organic framework by means of a Li-ion battery system

2017 ◽  
Vol 56 (6) ◽  
pp. 060307 ◽  
Author(s):  
Kouji Taniguchi ◽  
Keisuke Narushima ◽  
Kayo Yamagishi ◽  
Nanami Shito ◽  
Wataru Kosaka ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Phase Control ◽  
Li Ion Battery ◽  
Battery System ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Li Ion ◽  
Organic Framework

Energy efficiency of Li-ion battery packs re-used in stationary power applications

2014 ◽  
Vol 8 ◽  
pp. 9-17 ◽  
Author(s):  
Leila Ahmadi ◽  
Michael Fowler ◽  
Steven B. Young ◽  
Roydon A. Fraser ◽  
Ben Gaffney ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Li Ion Battery ◽  
Battery Packs ◽  
Li Ion

Real-Time Estimation of Lithium-Ion Concentration in Both Electrodes of a Lithium-Ion Battery Cell Utilizing Electrochemical–Thermal Coupling

2017 ◽  
Vol 139 (3) ◽  
Author(s):  
Satadru Dey ◽  
Beshah Ayalew
Keyword(s):  
Real Time ◽  
Unscented Kalman Filter ◽  
Lithium Ion ◽  
Time Estimation ◽  
Li Ion Battery ◽  
Battery Cell ◽  
Thermal Dynamics ◽  
Estimation Scheme ◽  
Real Time Estimation ◽  
Li Ion

This paper proposes and demonstrates an estimation scheme for Li-ion concentrations in both electrodes of a Li-ion battery cell. The well-known observability deficiencies in the two-electrode electrochemical models of Li-ion battery cells are first overcome by extending them with a thermal evolution model. Essentially, coupling of electrochemical–thermal dynamics emerging from the fact that the lithium concentrations contribute to the entropic heat generation is utilized to overcome the observability issue. Then, an estimation scheme comprised of a cascade of a sliding-mode observer and an unscented Kalman filter (UKF) is constructed that exploits the resulting structure of the coupled model. The approach gives new real-time estimation capabilities for two often-sought pieces of information about a battery cell: (1) estimation of cell-capacity and (2) tracking the capacity loss due to degradation mechanisms such as lithium plating. These capabilities are possible since the two-electrode model needs not be reduced further to a single-electrode model by adding Li conservation assumptions, which do not hold with long-term operation. Simulation studies are included for the validation of the proposed scheme. Effect of measurement noise and parametric uncertainties is also included in the simulation results to evaluate the performance of the proposed scheme.

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