Methodology of electric motor testing on the hybrid engine test bench

Piotr Bielaczyc,Andrzej Suchecki ,B Hejny ,Rafał Sala ,K Sobieszczański

doi:10.19206/ce-2018-303

Abstract

This paper presents a basic methodology and equipment setup used for an electric motor designed for light-duty vehicles, testing on a hybrid engine test bench equipped with an active AC dynamometer. The methodology used during the test was based on the appropriate regulation (UN-ECE Regulation 85). An example of mechanical performance measurements is presented, as well as an overall layout of the measurement devices used for testing, including a scheme detailing all electrical connections between the equipment employed during the test. The paper takes into consideration the necessity of development and subsequent improvements of the methodology employed during testing of e-motors, which due to the highly changeable and competitive automotive environment, will undoubtedly have a gradually increasing share and significance in the automotive industry.

Highlights

IntroductionThe high prices of fossil fuels on the global markets, growing demand for green and low-carbon energy, as well as fierce competition and more and more stringent emission legislation have exerted great pressure on automakers and manufacturers, forcing them to search for and implement new, more efficient powertrain solutions focused on reduced fuel consumption and emission levels [4, 6]
The high prices of fossil fuels on the global markets, growing demand for green and low-carbon energy, as well as fierce competition and more and more stringent emission legislation have exerted great pressure on automakers and manufacturers, forcing them to search for and implement new, more efficient powertrain solutions focused on reduced fuel consumption and emission levels [4, 6].The most reasonable solution seems to be small displacement engines, as it is known, they are not the most optimal ones
This paper presents a basic methodology and equipment setup used for an electric motor designed for light-duty vehicles, testing on a hybrid engine test bench equipped with an active alternating current (AC) dynamometer

Summary

Introduction

The high prices of fossil fuels on the global markets, growing demand for green and low-carbon energy, as well as fierce competition and more and more stringent emission legislation have exerted great pressure on automakers and manufacturers, forcing them to search for and implement new, more efficient powertrain solutions focused on reduced fuel consumption and emission levels [4, 6]. Test method related to pure electric vehicles, hybrid electric and compressed hydrogen fuel cell hybrid vehicles were part of the works on new WLTP (Worldwide harmonized Light vehicles Test Procedures) carried out by Informal Working Group (IWG) on WLTP of United Nation Economic Commission for Europe (UN ECE), Inland Transport Committee, World Forum for Harmonization of Vehicle Regulation (GRPE) Results of those works were introduced to the Global Technical Regulation (GTR) no. Proposal for Amendment 4 to GTR 15 for WLTP test procedure is under discussion [13] Another IWG – Electric Vehicles and Environment (EVE IWG) of this UN ECE World Forum is working on the development of new UNECE GTR determining test methods for the main issues related to EV vehicles as [16]: − Power determination of the electrified vehicles. Another IWG – Electric Vehicles and Environment (EVE IWG) of this UN ECE World Forum is working on the development of new UNECE GTR determining test methods for the main issues related to EV vehicles as [16]: − Power determination of the electrified vehicles. − Electrified vehicle durability issue (continuing research on EV battery performance and durability). − Methods of quantifying the energy consumption

Electric motor testing methodology on test bench for a hybrid powertrains

Findings

Conclusions and summary