scholarly journals Cooling System Energy Consumption Reduction through a Novel All-Electric Powertrain Traction Module and Control Optimization

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 33
Author(s):  
Simone Lombardi ◽  
Manfredi Villani ◽  
Daniele Chiappini ◽  
Laura Tribioli
Keyword(s):  
Energy Consumption ◽  
Control Strategy ◽  
Modular Design ◽  
Cooling System ◽  
Total Power ◽  
Control Optimization ◽  
Driving Cycles ◽  
Energy Consumption Reduction ◽  
Conventional Cooling ◽  
And Control

In this work, the problem of reducing the energy consumption of the cooling circuit for the propulsion system of an all-electric vehicle is approached with two different concepts: improvement of the powertrain efficiency and optimization of the control strategy. Improvement of the powertrain efficiency is obtained through a modular design, which consists of replacing the electric powertrain with several smaller traction modules whose powers sum up to the total power of the original powertrain. In this paper, it is shown how modularity, among other benefits, also allows reducing the energy consumption of the cooling system up to 54%. The energy consumption of the cooling system is associated with two components: the pump and the fan. They produce a so-called auxiliary load on the battery, reducing the maximum range of the vehicle. In conventional cooling systems, the pump and the fan are controlled with a thermostat, without taking into account the energy consumption. Conversely, in this work a control strategy to reduce the auxiliary loads is developed and compared with the conventional approach, showing that the energy consumption of the cooling system can be reduced up to 27%. To test the control strategy, numerical simulations have been carried out with a 1-D model of the cooling system. On the other hand, all the thermal loads of the components have been calculated with a vehicle simulator, which is able to predict the vehicle’s behavior under different driving cycles.

scholarly journals Optimization and Control Strategy Technology for User Comprehensive Energy Consumption

2021 ◽  
Vol 1871 (1) ◽  
pp. 012024
Author(s):  
Congcong Li ◽  
Qing Wang ◽  
Hongxia Zhu ◽  
Xinping Wang ◽  
Chao Yu
Keyword(s):  
Energy Consumption ◽  
Control Strategy ◽  
Optimization And Control ◽  
And Control

Study and Simulation on the Energy Efficiency Management Control Strategy of Ship Based on Clean Propulsion System

2015 ◽  
Author(s):  
Kai Wang ◽  
Xinping Yan ◽  
Yupeng Yuan
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Control Strategy ◽  
Control Strategies ◽  
Management Control ◽  
Propulsion System ◽  
Power Requirement ◽  
Doubly Fed ◽  
System Configurations ◽  
And Control

Nowadays, with the higher voice of ship energy saving and emission reduction, the research on energy efficiency management is particularly necessary. Energy efficiency management and control of ships is an effective way to improve the ship energy efficiency. In this paper, according to the new clean propulsion system configurations of 5000 tons of bulk carrier, the energy efficiency management control strategy of the clean propulsion system is designed based on the model of advanced brushless doubly-fed shaft generator, propulsion system using LNG/diesel dual fuel engine and energy consumption of the main engine for reducing energy consumption. The simulation model of the entire propulsion system and the designed control strategy were designed. The influence of the engine speed on the ship energy efficiency was analyzed, and the feasibility of the energy efficiency management control strategies was verified by simulation using Matlab/Simulink. The results show that the designed strategies can ensure the power requirement of the whole ship under different conditions and improve the ship energy efficiency and reduce CO2 emissions.

Basic Simulation Study during the Process of Designing the Hybrid Power Train Equipped with Planetary Transmission

2013 ◽  
pp. 322-356
Keyword(s):  
Control Strategy ◽  
Electricity Consumption ◽  
System Optimization ◽  
Minimal Energy ◽  
Simulation Research ◽  
Power Train ◽  
Hybrid Power ◽  
Driving Cycles ◽  
Planetary Transmission ◽  
And Control

Chapter 9 is devoted to simulation research showing the influence of changes of the power train’s parameters and control strategy on the vehicle’s energy consumption, depending on different driving conditions. The control strategy role is to manage how much energy, frankly speaking, how much of the torque-speed relations referring to the power alteration, are flowing to or from each component. In this way, the components of the hybrid power train have to be integrated with a control strategy, and of course, with its energetic parameters to achieve the optimal design for a given set of constraints. The hybrid power train is very complex and non-linear to its every component. One effective method of system optimization is numerical computation, the simulation, as in the case of the multivalent suboptimal procedure regarding the number of electrical mechanical drive’s elements, whose simultaneous operation is connected with the proper energy flow control. The minimization of a power train’s internal losses is the target. The quality factor is minimal energy, as well as minimal fuel and electricity consumption. The fuel consumption by the hybrid power train has to be considered in relation to the conventional propelled vehicle. First of all, the commonly chosen statistic driving cycles should be taken into consideration. Unfortunately, this is not enough. The additional tests as for the vehicle’s climbing, acceleration, and power train behavior, referring to real driving situations, are strongly recommended during the drive design process.

scholarly journals Energy Monitoring in a Heating and Cooling System in a Building Based on the Example of the Turówka Hotel

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1968 ◽  
Author(s):  
Marek Borowski ◽  
Piotr Mazur ◽  
Sławosz Kleszcz ◽  
Klaudia Zwolińska
Keyword(s):  
Energy Consumption ◽  
Energy Management ◽  
Energy Demand ◽  
Cooling System ◽  
Energy Performance ◽  
High Energy ◽  
Building Envelope ◽  
Large Variability ◽  
Heating And Cooling ◽  
And Control

The energy consumption of buildings is very important for both economic and environmental reasons. Newly built buildings are characterized by higher insulation and airtightness of the building envelope, and are additionally equipped with technologies that minimize energy consumption in order to meet legal requirements. In existing buildings, the modernization process should be properly planned, taking into account available technologies and implementation possibilities. Hotel buildings are characterized by a large variability of energy demand, both on a daily and a yearly basis. Monitoring systems, therefore, provide the necessary information needed for proper energy management in the building. This article presents an energy analysis of the Turówka hotel located in Wieliczka (southern Poland). The historical hotel facility is being modernized as part of the project to adapt the building to the requirements of a sustainable building. The modernization proposal includes a trigeneration system with a multifunctional reverse regenerator and control module using neural algorithms. The main purpose is to improve the energy efficiency of the building and adapt it to the requirements of low-energy buildings. The implementation of a monitoring system enables energy consumption to be reduced and improves the energy performance of the building, especially through using energy management systems and control modules. The proposed retrofit solution considers the high energy consumption, structure of the energy demand, and limits of retrofit intervention on façades.

scholarly journals “Desigrated”-Desiccant Integrated Façade for the Hot-Humid Climate of Bangkok, Thailand

2020 ◽  
Vol 12 (13) ◽  
pp. 5490
Author(s):  
Natchai Suwannapruk ◽  
Alejandro Prieto ◽  
Christien Janssen
Keyword(s):  
Cooling System ◽  
Promising Result ◽  
Humid Climate ◽  
Dynamic Simulations ◽  
High Rise ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
Cooling Technology ◽  
Conventional Cooling ◽  
Hot Humid Climate

“Desigrated” presented an attempt to integrate heat prevention strategies with low-ex cooling technologies, namely the desiccant and M-cycle evaporative cooling technology, in the form of a façade system for high-rise office buildings. The project targets to provide an alternative cooling solution for the hot and humid climate context of Bangkok. The results from experiments by various researchers are used as assumptions in developing the system, which was then evaluated through numerical methods and dynamic simulations. Being one of the prominent dehumidification technologies, a composite silica gel heat exchanger (CCHE) was implemented as the primary part of the façade system, while the M-cycle technology would also be implemented as a secondary cooling technique to cool down the supply air. The evaluation shows a promising result with up to 36% energy consumption reduction in comparison with the conventional cooling system, presenting itself as a transitioning tool in order to replace refrigerant cooling.

scholarly journals Advanced rule-based energy management for better fuel economy of hybrid electric tracked vehicle

2021 ◽  
Vol 49 (3) ◽  
pp. 711-718
Author(s):  
Stefan Milićević ◽  
Ivan Blagojević ◽  
Slavko Muždeka
Keyword(s):  
Fuel Economy ◽  
Control Strategy ◽  
Power Distribution ◽  
Tracked Vehicle ◽  
Control Optimization ◽  
Reference Vehicle ◽  
Battery State Of Charge ◽  
Technological Developments ◽  
Hybrid Electric ◽  
And Control

All recent technological developments in the field of power distribution in hybrid electric tracked vehicles are often hard to apply and carry high computational burden which makes them impractical for real-time applications. In this paper, a novel control strategy is proposed for parallel hybrid electric tracked vehicle based on robust and easy to implement thermostat strategy with added merits of power follower control strategy (PFCS). The goal of the control strategy is enhanced fuel economy. Serbian infantry fighting vehicle BVP M80-A is chosen as the reference vehicle. For the purpose of validation, a backward-looking, high fidelity model is created in Simulink environment. Investigation of the results indicates that the proposed control strategy offers 12.8% better fuel economy while effectively maintaining battery state of charge (SOC). Even better results (23.2%) were achieved applying the proposed strategy to a model with an additional generator. It is concluded that further improvements can be made with combined sizing and control optimization.

THE IMPACT OF SOURCE CODE TRANSFORMATIONS ON SOFTWARE POWER AND ENERGY CONSUMPTION

2002 ◽  
Vol 11 (05) ◽  
pp. 477-502 ◽  
Author(s):  
CARLO BRANDOLESE ◽  
WILLIAM FORNACIARI ◽  
FABIO SALICE ◽  
DONATELLA SCIUTO
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Source Code ◽  
Code Transformations ◽  
C Language ◽  
Energy Consumption Reduction ◽  
Set Up ◽  
Power And Energy ◽  
And Control ◽  
The Impact

Software power consumption minimization is increasingly a very relevant issue in the design of embedded systems, in particular those dedicated to mobile devices. The paper aims to review the state of the art source code transformations in terms of their effectiveness on power and energy consumption reduction. A design framework for the C language has been set up, using the gcc compiler with SimplePower as the simulation kernel. Some new transformations have also been identified with the aim of reducing the power consumption. Four classes of transformations will be considered: loop transformations, data structures transformations, inter-procedural transformations and control structure transformations. For each transformation, together with the evaluation of the energy and power consumption, some applicability criteria have been defined.

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