Study of economic system at compensation for voltage drop utilizing charging power adjustment of electric vehicles

In recent years, air pollution and climate change issues have pushed people worldwide to switch to using electric vehicles (EVs) instead of gas-driven vehicles. Unfortunately, most distribution system facilities are neither designed nor well prepared to accommodate these new types of loads, which are characterized by random and uncertain behavior. Therefore, this paper provides a comprehensive investigation of EVs’ effect on a realistic distribution system. It provides a technical evaluation and analysis of a real distribution system’s load and voltage drop in the presence of EVs under different charging strategies. In addition, this investigation presents a new methodology for managing EV loads under a dynamic response strategy in response to the distribution system’s critical hours. The proposed methodology is applied to a real distribution network, using the Monte Carlo method and the CYME program. Random driver behavior is taken into account in addition to various factors that affect EV load parameters. Overall, the results show that the distribution system is significantly affected by the addition of EV charging loads, which create a severe risk to feeder limits and voltage drop. However, a significant reduction in the impact of EVs can be achieved if a proper dynamic demand response programme is implemented. We hope that the outcomes of this investigation will provide decision-makers and planners with prior knowledge about the expected impact of using EVs and, consequently, enable them to take the proper actions needed to manage such load.

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On the Real-Time Modeling of Voltage Drop and Grid Congestion Due to the Presence of Electric Vehicles on Residential Feeders

2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) ◽

10.1109/eeeic/icpseurope49358.2020.9160855 ◽

2020 ◽

Cited By ~ 1

Author(s):

Tawfiq Aljohani ◽

Ahmed Saad ◽

Osama Mohammed

Keyword(s):

Real Time ◽

Electric Vehicles ◽

Voltage Drop ◽

The Real ◽

Time Modeling

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Experimental research of a re-equipment wheeled vehicle category M1 into electromobile

System technologies ◽

10.34185/1562-9945-4-135-2021-03 ◽

2021 ◽

Vol 4 (135) ◽

pp. 23-34

Author(s):

Volodimir Hladchenko

Keyword(s):

Electric Vehicles ◽

Power Plants ◽

Thermal Protection ◽

Voltage Drop ◽

Experimental Studies ◽

Electric Energy ◽

Environmentally Friendly ◽

The Body ◽

Traction Motor ◽

Power Storage

Today, there are more than 1 billion ICE equipped vehicles worldwide. Some of them are electric vehicles, hybrid vehicles of various types, hydrogen and gas power plants. The part of environmentally friendly wheeled vehicles is very small. With an increase in the price of oil products in the foreseeable future, all these cars with ICE will have to be either disposed of or refurbished. Moreover, mainly for other types of energy, more environmentally friendly, with the aim of further using the resource of the body and transmission, in order to provide them with the opportunity to develop their resource. One of the promising areas is the re-equipment of the power plant to an electric or hybrid one.Ensuring the required indicators of traction and speed properties of electric vehicles is a difficult task and requires a more detailed assessment due to the great difficulties in finding the initial data and internal parameters of the system. The presented article considers the vehicle ZAZ 965 "Zaporozhets" of category M1, which was re-equipment into a battery electromobile. The vehicle is equipped with a traction electric motor Balkankar DS 3.6/7.5/14, a power storage battery with lithium cells, a maximum voltage of 100.8 V and a capacity of 6.45 kW∙h. The traction motor control system is impulse with electronic power switches. Traction motor power is controlled by a controller that changes the pulse-width modulation (PWM) depending on the control signal from the control unit and the logic of the system. The change in PWM signal also occurs when the thermal protection is triggered, and in the event of a voltage drop on the power storage battery.Experimental road studies have been carried out, electricity consumption by a vehicle at various speeds has been determined, a coefficient has been determined that characterizes the ratio of consumed electrical energy to the kinetic energy of a vehicle. Comparison of the results of theoretical and experimental studies testifies to the adequacy of the developed mathematical model and the initial provisions underlying the calculation of the indicators of the efficiency of the use of electric energy by electromobile re-equipment from common vehi-cle with ICE.

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Collaborative Optimization Method of Power and Efficiency for LCC-S Wireless Power Transmission System

Electronics ◽

10.3390/electronics10243088 ◽

2021 ◽

Vol 10 (24) ◽

pp. 3088

Author(s):

Ming Xue ◽

Qingxin Yang ◽

Chunzhi Li ◽

Pengcheng Zhang ◽

Shuting Ma ◽

...

Keyword(s):

Electric Vehicles ◽

Power Transmission ◽

Optimization Method ◽

Collaborative Optimization ◽

Wireless Power ◽

Environmental Disturbances ◽

Power Adjustment ◽

Optimal Load ◽

Optimal Efficiency ◽

Equivalent Load

Dynamic wireless charging enables moving equipment such as electric vehicles, robots to be charged in motion, and thus is a research hotspot. The applications in practice, however, suffer from mutual inductance fluctuation due to unavoidable environmental disturbances. In addition, the load also changes during operation, which makes the problem more complicated. This paper analyzes the impacts of equivalent load and mutual inductances variation over the system by LCC-S topology modeling utilizing two-port theory. The optimal load expression is derived. Moreover, a double-sided control strategy enabling optimal efficiency and power adjustment is proposed. Voltage conducting angles on the inverter and rectifier are introduced. The simulation and experimental results verify the proposed method.

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Modeling the Impact of PHEV Penetration on the Residential Electrical Networks

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.793.154 ◽

2015 ◽

Vol 793 ◽

pp. 154-158

Author(s):

S.A. Syed Mustaffa ◽

M.F. Mohd Yusoff ◽

N. Baharin ◽

T.A.R Tuan Abdullah

Keyword(s):

Electric Vehicles ◽

Hybrid Electric Vehicles ◽

High Efficiency ◽

Voltage Drop ◽

Electrical Networks ◽

Sustainable Mobility ◽

Low Emission ◽

Simulation Results ◽

Negative Impacts ◽

The Impact

Plug-in Hybrid Electric Vehicles (PHEV) have a better future in term of providing sustainable mobility due to their high efficiency and low emission levels. However, the global penetration of PHEVs can create negative impacts if their charging activities are not scheduled and controlled. This paper presents the impact of PHEVs charging on the residential network in Malaysia under various charging scenarios. The simulation results shows there will be a significant voltage drop in the cable and increment in load profile due to additional load. In order to avoid any unwanted circumtances, several PHEV charging profiles are analysed and some potential solutions are suggested including controlling and resizing of the cable.

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