Work

Biaxial Excitation Generator (bega) – 9 Phases Operation in Faulty Conditions

Year: 2025

Type: article

Abstract: This paper presents a biaxial excitation generator for automobiles (BEGA) in generator mode, three three-phase windings (9 phases), and three diode bridge rectifiers DC parallel-connected for full power. BEGA is a synchronous machine with a biaxial excitation: one along the d-axis produced by the DC excitation coils (fed through brushes or contactless) and another along the q-axis produced by the PMs. The experimental demonstration of fault-tolerant characteristics was conducted under various fault conditions, including interrupted phases, short-circuited coils, and missing or short-circuited diodes. The importance of having all three three-phase windings (star-connection) connected in neutral points is highlighted and discussed. A comprehensive analysis of the impact of these faults on the harmonic spectrum is presented using a fast Fourier transform.

Source: REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE

DOI: 10.59277/rrst-ee.2025.1.7

Authors: ADRIAN-DANIEL MARTIN, LIVIU-DANUT VITAN, LUCIAN TUTELEA, ION BOLDEA

Institutions: Politehnica University of Timisoara, Romanian Academy

Language: English

Topic: Electric Motor Design and Analysis

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: diamond

OpenAlex ID: W4408944533

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