ANALYSIS OF OPERATION OF HYBRID VEHICLES IN ELECTRIC DRIVE TRAIN MODE

The article is devoted to the analysis of operation vehicles with hybrid power plants in electric drive train mode. The main advantages of hybrid vehicles were considered when driving using the electric motor. The experiments were conducted on the stand GNFA HE-3020 which is simulating the operation of a hybrid vehicle the Peugeot 3008 Hybrid4. The impact of road conditions on the power reserve and the recuperation of energy were analyzed. Based on results, the graphs were constructed and regression equations were made.

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A Model-Based Design Approach for Stability Assessment, Control Tuning and Verification in Off-Grid Hybrid Power Plants

Energies ◽

10.3390/en13010049 ◽

2019 ◽

Vol 13 (1) ◽

pp. 49 ◽

Cited By ~ 3

Author(s):

Lennart Petersen ◽

Florin Iov ◽

German Tarnowski

Keyword(s):

Power Plants ◽

Frequency Regulation ◽

Small Signal Stability ◽

Signal Stability ◽

Hybrid Power ◽

Model Based ◽

Wide Range ◽

Rapid Control Prototyping ◽

And Control ◽

The Impact

This paper proposes detailed and practical guidance on applying model-based design (MBD) for voltage and frequency stability assessments, control tuning and verification of off-grid hybrid power plants (HPPs) comprising both grid-forming and grid-feeding inverter units and synchronous generation. First, the requirement specifications are defined by means of system, functional and model requirements. Secondly, a modular approach for state-space modelling of the distributed energy resources (DERs) is presented. Flexible merging of subsystems by properly defining input and output vectors is highlighted to describe the dynamics of the HPP during various operating states. Eigenvalue (EV) and participation factor (PF) analyses demonstrate the necessity of assessing small-signal stability over a wide range of operational scenarios. A sensitivity analysis shows the impact of relevant system parameters on critical EVs and enables one to finally design and tune the central HPP controller (HPPC). The rapid control prototyping and control verification stages are accomplished by means of discrete-time domain models being used in both off-line simulation studies and real-time hardware-in-the-loop (RT-HIL) testing. The outcome of this paper is targeted at off-grid HPP operators seeking to achieve a proof-of-concept on stable voltage and frequency regulation. Nonetheless, the overall methodology is applicable to on-grid HPPs, too.

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Maintenance of Electric and Hybrid Vehicles

International Journal of Engineering and Management Sciences ◽

10.21791/ijems.2020.3.5 ◽

2020 ◽

Vol 5 (3) ◽

pp. 37-46

Author(s):

István Komlósi ◽

Tamás Zoltán Varga ◽

József Menyhárt ◽

Paulo Victor De Souza Araujo ◽

Paulo Araújo

Keyword(s):

Electric Motor ◽

Hybrid Vehicle ◽

Hybrid Vehicles ◽

Gasoline Engines ◽

Advantages And Disadvantages ◽

Electric Car ◽

Electrical Vehicle

An electric car is a vehicle powered by one or more electric engines, utilizing energy stored within batteries that are rechargeable. The first register of a usable electrical vehicle dates from 1880s. A hybrid vehicle incorporates two or more different power types, including, e.g., gasoline engines and electric motor. The goal in this work is to present the overall overview of the structure of the electric, hybrid and electric-hybrid vehicles, advantages and disadvantages of these types, the main points to focus when maintaining these and the challenges involved in its production and maintenance.

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The impact of Naama's 12 MW Solar Project on the Algerian Southwestern Electricity Network

Algerian Journal of Renewable Energy and Sustainable Development ◽

10.46657/ajresd.2020.2.2.3 ◽

2020 ◽

Vol 2 (02) ◽

pp. 105-114

Author(s):

Hocine Guentri ◽

Mokhtar Benasla ◽

Kabira Ezaeri

Keyword(s):

Renewable Energy ◽

Power Plant ◽

Power Plants ◽

Wind Farm ◽

Positive Impact ◽

Voltage Profile ◽

Hybrid Power ◽

Photovoltaic Power ◽

Hybrid Power Plant ◽

The Impact

To achieve its renewable energy targets, Algeria has launched several projects, such as the Hassi Rmel solar thermal-gas hybrid power plant, the Taberkine wind farm in Adrar, and several small photovoltaic power plants. Besides, others planned including, the Naama PV plant. In this study, the impact of the expected photovoltaic power plant at the province of Naama on the southwestern network of Algeria. The obtained results indicate that the installation of this plant would have a positive impact on the system by reducing the losses active and improving the voltage profile.

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Influence of Hydraulics on Electric Drive Operational Characteristics in Pump-Controlled Actuators

Actuators ◽

10.3390/act10120321 ◽

2021 ◽

Vol 10 (12) ◽

pp. 321

Author(s):

Viacheslav Zakharov ◽

Tatiana Minav

Keyword(s):

Stability Analysis ◽

Electric Drive ◽

Electric Motor ◽

Pulse Width Modulation ◽

Frequency Converter ◽

Process Time ◽

Stable Operation ◽

Model And Simulation ◽

Operational Characteristics ◽

The Impact

Transitioning from a valve- to pump-controlled system has been observed in working hydraulics to reduce energy consumption and accelerate the response to decarbonization requirements in Non-road Mobile Machinery (NRMM). The utilization of an electric motor as a prime mover significantly enhances the chances of completing this task. While the concept of combining hydraulics with an electric motor is not new, the functionality of electro-hydraulics can be improved due to multidisciplinary domains, the impact of the electric drive and its control is usually underestimated. Thus, this study aims to evaluate the influence of hydraulics on electric drive operational characteristics in pump-controlled actuators. It utilizes an electro-hydraulic model and simulation study under various conditions, a stability analysis, and a Pulse Width Modulation (PWM) of the frequency converter (FC) evaluation on a selected variable speed pump-controlled actuator to demonstrate the influence of hydraulics on an electric drive. Experimental validation of the model demonstrated an acceptable accuracy of 5%. Moreover, the stability analysis indicated a rise time of about 0.051 s, an overshoot of 0.53%, a transient process time of 0.13 s, and a steady-state value difference of 0.16%; all of which guarantees stable operation of the electric drive with a hydraulic load. In addition, an optimal PWM of an FC frequency of 5 kHz was selected to guarantee accurate speed control with minimum overshoot.

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Greenhouse Gas Emissions from Hydropower Reservoirs

Hydro Nepal Journal of Water Energy and Environment ◽

10.3126/hn.v11i0.7159 ◽

2012 ◽

Vol 11 ◽

pp. 37-42 ◽

Cited By ~ 7

Author(s):

Amit Kumar ◽

M.P. Sharma

Keyword(s):

Water Quality ◽

Greenhouse Gas ◽

Power Plants ◽

Thermal Power ◽

Linear Equations ◽

Quality Parameters ◽

Regression Equations ◽

Combined Impact ◽

The Impact ◽

Hydropower Reservoirs

Hydropower reservoirs are found to emit about 35-70 times less greenhouse gas (GHG) compared to thermal power plants. The emissions not only depend on the type of eco-region in which the reservoir is located but also on the reservoir characteristics and water quality parameters. This paper reports the results of the impact of reservoir parameters and water quality characteristics on GHG emission from tropical, temperate and boreal reservoirs. For this purpose, linear equations are developed but the regression coeffi cient is found very poor. The R2 range for CO2 is 5×10-5 to 0.36 for tropical, temperate and boreal reservoirs and the R24 is 0.004- 0.244 respectively, which is far lower than 0.90, and cannot be accurately used for prediction. Thereafter, empirical regression equations are developed to see the combined impact of reservoir parameters and R2 is found as 0.48 for CO2 and 0.16 for CH4 for tropical, 0.34 and 0.37 for CO2 and CH4 respectively for temperate and 0.51 and 0.26 for boreal reservoirs. The R2 0.90 indicates that these equations cannot be used to accurately predict the emissions, but can be used to get some idea about emissions from the reservoirs.DOI: http://dx.doi.org/10.3126/hn.v11i0.7159 Hydro Nepal Vol.11 2011 pp.37-42

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