XIE Qiuhui1, ZHANG Hao1, TONG Zhen2, ZHOU Yang2, YANG Fan2

(1. Shanghai Entry Exit Inspection and Quarantine Bureau,Shanghai 200002, China; 

2. Shanghai Volkswagen Automative Company, Shanghai 201805, China)

 

 

Abstract: Aiming at the energy consumption of new energy vehicles, testing methods and the evaluation index of motor drive systems were studied, and different evaluation indexes of motors and its controllers were proposed for new energy vehicles under different operating conditions.Based on the summary of energy saving technologies of new energy vehicles, energy consumption characteristics of motor drive system were analyzed and the influence on different energy saving condition of the parameters was described.After a simple analysis of the electrical diagram of a electric motor system, parameters including with motor leakage value were important to the operating range and conversion efficiency of the system energy recovery mode.The specific motor and its controller were tested by using the motor testing bench designed by the research group.The experimental results indicate that typical efficiency value of motor drive system under different energy saving mode can be calculated by the energy conversion efficiency distribution map.The research results indicate that the comprehensive energy consumption test method based on different vehicle conditions is of great significance to reduce the energy consumption of new energy vehicles.

Key words: mtor drive system in new energy vehicles; energy consumption indexes; vehicle energy saving mode