Dynamic testing characterization of a HEV traction motor

Abstract

The dynamic testing method, as an alternative to traditional bench testing against a brake, has proven to be a fast, convenient, yet accurate way of characterizing electrical machines. By measuring the speed and the currents and voltages while alternatively accelerating and decelerating the electrical machine it is possible to obtain its torque and flux linkage characteristics dynamically.This article presents the application of the dynamic testing method to the validation of a HEV electric traction machine, comparing the torque and flux linkage characteristics obtained experimentally to those from the Finite Element design simulations. Moreover, a discussion is brought up on the possible reasons for the deviations observed.

Instrumentation and Dynamic Characterization of a Commercial Electric Vehicle for Rural Public Transport

“…To solve this problem in [19] a dynamic test method of electrical machines is proposed as an alternative to the traditional test bench where a torque sensor is required. It is shown that, with the measurement of velocity, current, and voltage, while accelerating and decelerating an electric motor, it is possible to dynamically estimate the torque and the characteristics of the flux linkage.…”