Abstract
Issues related to environmental pollution, the greenhouse effect and fuels exhaustion have resulted in research on the implementation of electric and hybrid (vehicles provided both with electric motor and combustion engine) vehicles. This paper presents a study upon the electric motor that drives hybrid vehicles by analyzing its use under generating duty after the change of the power scheme that allows the transformation of the mechanical energy taken from a prime motor (combustion engine, electric motor, wheels moving vehicle during braking) into electrical energy used for auxiliary consumers. Experimental data confirm the efficient use of analyzed machine as starter and the possibility of its use as a generator (alternator). The speed adjustment has been studied in a machine operating as motor, for vehicle traffic adaptation depending on working conditions. The main characteristics come from data acquisition procedure, which uses the LabVIEW environment. We analyzed dynamic braking mode, which appears during quick stops, when the electric machine turns to generating duty and feed the auxiliary power consumers.
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