scholarly journals Energy Efficiency Simulation Study of Electric Car Charging Stations Based on Double-mode

2014 ◽  
Author(s):  
Xuejun Gong ◽  
Ling Wang ◽  
Zhida Xu
Keyword(s):  
Energy Efficiency ◽  
Simulation Study ◽  
Electric Car ◽  
Charging Stations

scholarly journals Modelling and Performance Analysis of Electric Car-Sharing Systems Using Petri Nets

2020 ◽  
Vol 170 ◽  
pp. 03001 ◽  
Author(s):  
A. Hamroun ◽  
K. Labadi ◽  
M. Lazri
Keyword(s):  
Petri Nets ◽  
Simulation Analysis ◽  
Discrete Event ◽  
Stochastic Petri Nets ◽  
Car Sharing ◽  
Event Simulation ◽  
Electric Car ◽  
Bike Sharing ◽  
And Performance ◽  
Charging Stations

Car sharing systems emerged as a new answer to mobility challenges in smart and sustainable cities. Despite their apparent success, design and exploitation of such systems raise crucial strategic and operational challenges. To help planners and decision makers, simulation, analysis and optimization models are unavoidable. Based on the formal modelling and analysis power of stochastic Petri nets, this paper proposes a discrete event simulation model for electric car sharing systems for performance and analysis purposes, taking into account their complex dynamic behaviour, organization and parameters including capacities of the stations, battery and energy availability, locations of charging stations and also their car maintenance activities, not negligible compared to the case of bike-sharing systems.

Simulation Study on Factors to be Considered for Each Type of Indoor Luminaires and Light Sources when Converting to LEDs

2021 ◽  
pp. 72-78
Author(s):  
Jaemin Kim
Keyword(s):  
Energy Efficiency ◽  
Power Consumption ◽  
Simulation Study ◽  
High Efficiency ◽  
Optical Characteristics ◽  
Government Agencies ◽  
Light Sources ◽  
Fluorescent Lamp ◽  
Main Method ◽  
Illuminance Uniformity

As high-efficiency lighting has become mainstream, conversion of lighting equipment is under way, starting with government agencies. Existing fluorescent luminaires are being converted with LED luminaires. The main method used for conversion is to remove the fluorescent lamp (case 1) and replace it to a tubular LED lamp, and convert the luminaire itself with a LED panel luminaire (case 2). However, focusing only on energy efficiency, the existing luminous environment are not considered, such as illuminance, illuminance uniformity, and UGR. Therefore, the optical characteristics were measured using the actual luminaire used in the conversion. Simulations were performed comparing the luminous environment and power consumption before/after conversion. Case 1 had advantages in power consumption and UGR over case 2, and the illuminance was slightly reduced, but it met the criteria. These results confirmed that the conversion of lighting devices at least ensured the existing luminous environment.

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