EV Range Extender in a Two-Battery HEECS Chopper-Based Powertrain

This paper first presents a new powertrain based on a two-battery High-Efficiency Energy Conversion System (HEECS) chopper that is suitable for electric vehicles (EVs). The HEECS chopper is based on the principle of a partial power conversion circuit, and the overall efficiency is over 99% in a wide...

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Main Authors: Ayataro Tamura, Takayuki Ishibashi, Atsuo Kawamura
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:World Electric Vehicle Journal
Subjects:
Online Access:https://www.mdpi.com/2032-6653/10/2/19
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author Ayataro Tamura
Takayuki Ishibashi
Atsuo Kawamura
author_facet Ayataro Tamura
Takayuki Ishibashi
Atsuo Kawamura
author_sort Ayataro Tamura
collection DOAJ
description This paper first presents a new powertrain based on a two-battery High-Efficiency Energy Conversion System (HEECS) chopper that is suitable for electric vehicles (EVs). The HEECS chopper is based on the principle of a partial power conversion circuit, and the overall efficiency is over 99% in a wide load range. The efficiency of this powertrain was measured in the steady state by two types of powertrains, a non-chopper powertrain and an HEECS chopper-based powertrain, using a motor test bench. On the basis of these data, several driving tests, such as the Worldwide-harmonized Light vehicles Test Cycle (WLTC), were simulated, and four driving cycle patterns were included. A 6.4% reduction in energy consumption was observed in WLTC low mode compared with the energy consumed by the non-chopper powertrain in the experiments. Thus, the HEECS chopper-based powertrain is more suitable for low-speed driving ranges than high-speed ranges.
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spelling doaj.art-f6e173d817f74d59b95080cce1c80d362022-12-22T04:00:09ZengMDPI AGWorld Electric Vehicle Journal2032-66532019-04-011021910.3390/wevj10020019wevj10020019EV Range Extender in a Two-Battery HEECS Chopper-Based PowertrainAyataro Tamura0Takayuki Ishibashi1Atsuo Kawamura2Division of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama, Kanagawa 240-8501, JapanDivision of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama, Kanagawa 240-8501, JapanDivision of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama, Kanagawa 240-8501, JapanThis paper first presents a new powertrain based on a two-battery High-Efficiency Energy Conversion System (HEECS) chopper that is suitable for electric vehicles (EVs). The HEECS chopper is based on the principle of a partial power conversion circuit, and the overall efficiency is over 99% in a wide load range. The efficiency of this powertrain was measured in the steady state by two types of powertrains, a non-chopper powertrain and an HEECS chopper-based powertrain, using a motor test bench. On the basis of these data, several driving tests, such as the Worldwide-harmonized Light vehicles Test Cycle (WLTC), were simulated, and four driving cycle patterns were included. A 6.4% reduction in energy consumption was observed in WLTC low mode compared with the energy consumed by the non-chopper powertrain in the experiments. Thus, the HEECS chopper-based powertrain is more suitable for low-speed driving ranges than high-speed ranges.https://www.mdpi.com/2032-6653/10/2/19electric vehiclesHEECS chopperpowertrainrange extension
spellingShingle Ayataro Tamura
Takayuki Ishibashi
Atsuo Kawamura
EV Range Extender in a Two-Battery HEECS Chopper-Based Powertrain
World Electric Vehicle Journal
electric vehicles
HEECS chopper
powertrain
range extension
title EV Range Extender in a Two-Battery HEECS Chopper-Based Powertrain
title_full EV Range Extender in a Two-Battery HEECS Chopper-Based Powertrain
title_fullStr EV Range Extender in a Two-Battery HEECS Chopper-Based Powertrain
title_full_unstemmed EV Range Extender in a Two-Battery HEECS Chopper-Based Powertrain
title_short EV Range Extender in a Two-Battery HEECS Chopper-Based Powertrain
title_sort ev range extender in a two battery heecs chopper based powertrain
topic electric vehicles
HEECS chopper
powertrain
range extension
url https://www.mdpi.com/2032-6653/10/2/19
work_keys_str_mv AT ayatarotamura evrangeextenderinatwobatteryheecschopperbasedpowertrain
AT takayukiishibashi evrangeextenderinatwobatteryheecschopperbasedpowertrain
AT atsuokawamura evrangeextenderinatwobatteryheecschopperbasedpowertrain