Efficiency improvement of regenerative energy for an EV

Takuya Yabe, Kan Akatsu, Nobunori Okui, Tetsuya Niikuni, Terunao Kawai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electric Vehicles (EVs) and various Hybrid Electric Vehicles (HEVs) have been attracting a lot of attention for environmental issues and energy crisis. One of advantages of using foregoing vehicles is charging energy by the regenerative brake. The running distance by one electric charge is increased a lot by the regenerative brake. However, the absorbed capacity of the regenerative energy is limited because of the motor capacity and the current limit of the battery. As a result not only the regenerative electric brake but also the mechanical brake must be used. This becomes serious issue in the heavy weight vehicle such as the bus and the truck, the effectiveness of EV/HEV is not obtained. To increase the regenerative energy, the large motor and the battery are requested, however, it is very difficult because of the cost and the limit of the inverter capacity. In this paper, it is verified that the regenerative energy is increased by improving a braking method, averaging the deceleration, without changing the power train system. The proposed method is experimentally evaluated by i-MiEV on the dynamo system, and increases the regenerative energy to 18%.

Original languageEnglish
Title of host publication26th Electric Vehicle Symposium 2012
Pages634-640
Number of pages7
Volume1
Publication statusPublished - 2012
Event26th Electric Vehicle Symposium 2012 - Los Angeles, CA
Duration: 2012 May 62012 May 9

Other

Other26th Electric Vehicle Symposium 2012
CityLos Angeles, CA
Period12/5/612/5/9

Fingerprint

Electric vehicles
Brakes
Hybrid vehicles
Electric brakes
Electric charge
Deceleration
Braking
Trucks
Costs

Keywords

  • EV (electric vehicle)
  • HEV (hybrid electric vehicle)
  • Regenerative brake

ASJC Scopus subject areas

  • Automotive Engineering
  • Electrical and Electronic Engineering

Cite this

Yabe, T., Akatsu, K., Okui, N., Niikuni, T., & Kawai, T. (2012). Efficiency improvement of regenerative energy for an EV. In 26th Electric Vehicle Symposium 2012 (Vol. 1, pp. 634-640)

Efficiency improvement of regenerative energy for an EV. / Yabe, Takuya; Akatsu, Kan; Okui, Nobunori; Niikuni, Tetsuya; Kawai, Terunao.

26th Electric Vehicle Symposium 2012. Vol. 1 2012. p. 634-640.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yabe, T, Akatsu, K, Okui, N, Niikuni, T & Kawai, T 2012, Efficiency improvement of regenerative energy for an EV. in 26th Electric Vehicle Symposium 2012. vol. 1, pp. 634-640, 26th Electric Vehicle Symposium 2012, Los Angeles, CA, 12/5/6.
Yabe T, Akatsu K, Okui N, Niikuni T, Kawai T. Efficiency improvement of regenerative energy for an EV. In 26th Electric Vehicle Symposium 2012. Vol. 1. 2012. p. 634-640
Yabe, Takuya ; Akatsu, Kan ; Okui, Nobunori ; Niikuni, Tetsuya ; Kawai, Terunao. / Efficiency improvement of regenerative energy for an EV. 26th Electric Vehicle Symposium 2012. Vol. 1 2012. pp. 634-640
@inproceedings{fcda49f6aa214fa38c1d561d19bbb941,
title = "Efficiency improvement of regenerative energy for an EV",
abstract = "Electric Vehicles (EVs) and various Hybrid Electric Vehicles (HEVs) have been attracting a lot of attention for environmental issues and energy crisis. One of advantages of using foregoing vehicles is charging energy by the regenerative brake. The running distance by one electric charge is increased a lot by the regenerative brake. However, the absorbed capacity of the regenerative energy is limited because of the motor capacity and the current limit of the battery. As a result not only the regenerative electric brake but also the mechanical brake must be used. This becomes serious issue in the heavy weight vehicle such as the bus and the truck, the effectiveness of EV/HEV is not obtained. To increase the regenerative energy, the large motor and the battery are requested, however, it is very difficult because of the cost and the limit of the inverter capacity. In this paper, it is verified that the regenerative energy is increased by improving a braking method, averaging the deceleration, without changing the power train system. The proposed method is experimentally evaluated by i-MiEV on the dynamo system, and increases the regenerative energy to 18{\%}.",
keywords = "EV (electric vehicle), HEV (hybrid electric vehicle), Regenerative brake",
author = "Takuya Yabe and Kan Akatsu and Nobunori Okui and Tetsuya Niikuni and Terunao Kawai",
year = "2012",
language = "English",
isbn = "9781622764211",
volume = "1",
pages = "634--640",
booktitle = "26th Electric Vehicle Symposium 2012",

}

TY - GEN

T1 - Efficiency improvement of regenerative energy for an EV

AU - Yabe, Takuya

AU - Akatsu, Kan

AU - Okui, Nobunori

AU - Niikuni, Tetsuya

AU - Kawai, Terunao

PY - 2012

Y1 - 2012

N2 - Electric Vehicles (EVs) and various Hybrid Electric Vehicles (HEVs) have been attracting a lot of attention for environmental issues and energy crisis. One of advantages of using foregoing vehicles is charging energy by the regenerative brake. The running distance by one electric charge is increased a lot by the regenerative brake. However, the absorbed capacity of the regenerative energy is limited because of the motor capacity and the current limit of the battery. As a result not only the regenerative electric brake but also the mechanical brake must be used. This becomes serious issue in the heavy weight vehicle such as the bus and the truck, the effectiveness of EV/HEV is not obtained. To increase the regenerative energy, the large motor and the battery are requested, however, it is very difficult because of the cost and the limit of the inverter capacity. In this paper, it is verified that the regenerative energy is increased by improving a braking method, averaging the deceleration, without changing the power train system. The proposed method is experimentally evaluated by i-MiEV on the dynamo system, and increases the regenerative energy to 18%.

AB - Electric Vehicles (EVs) and various Hybrid Electric Vehicles (HEVs) have been attracting a lot of attention for environmental issues and energy crisis. One of advantages of using foregoing vehicles is charging energy by the regenerative brake. The running distance by one electric charge is increased a lot by the regenerative brake. However, the absorbed capacity of the regenerative energy is limited because of the motor capacity and the current limit of the battery. As a result not only the regenerative electric brake but also the mechanical brake must be used. This becomes serious issue in the heavy weight vehicle such as the bus and the truck, the effectiveness of EV/HEV is not obtained. To increase the regenerative energy, the large motor and the battery are requested, however, it is very difficult because of the cost and the limit of the inverter capacity. In this paper, it is verified that the regenerative energy is increased by improving a braking method, averaging the deceleration, without changing the power train system. The proposed method is experimentally evaluated by i-MiEV on the dynamo system, and increases the regenerative energy to 18%.

KW - EV (electric vehicle)

KW - HEV (hybrid electric vehicle)

KW - Regenerative brake

UR - http://www.scopus.com/inward/record.url?scp=84873291600&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873291600&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9781622764211

VL - 1

SP - 634

EP - 640

BT - 26th Electric Vehicle Symposium 2012

ER -