Article Dans Une Revue IEEE Transactions on Transportation Electrification Année : 2025

Losses Analysis of a Three-Phase Bidirectional Active Split Source Inverter for Traction Applications

Résumé

In automotive applications, industrials use DC-DC boosting stages interfaced upstream of the Voltage Source Inverter (VSI) to increase the DC bus voltage. These topologies enable the motors to be driven with higher DC bus voltage than that delivered by the battery. Apparently, the use of extra DC-DC converter decreases the efficiency of the whole system. Recently a single-stage topology called the Split Source Inverter (SSI) was derived. This topology enables the boosting function. Unfortunatly, it exhibits very poor utilization of the DC bus voltage, thus preventing its use for traction applications. In previous work, the authors introduced a new single-stage topology called the Bidirectional Active Split Source Inverter (B-ASSI). It enables the boosting function with bidirectional power flow capability and a large utilization of the DC bus voltage. However, its efficiency was not thoroughly studied and comparison with conventionnal two-stage solution not conducted. This paper proposes an in-depth losses analysis of the B-ASSI. Analytical expression of the currents are proposed and validated by simulation. An extensive experimental validations are carry out on a permanent magnet synchronous machine (PMSM) test-bench. The derived expressions and proposed approadh enables a theoretical comparison of the B-ASSI to two-stage solutions and to the SSI but also giving insights about the design of the converter. This theoretical comparison is performed on a normalized driving cycle. It demonstrates that for the given design constraints the B-ASSI exhibits lower losses than the classical two-stage solution and the SSI for low-speed operating conditions corresponding to urban drive profiles.

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hal-04829825 , version 1 (12-03-2025)

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Antoine Sabrié, Alexandre Battiston, Jean-Yves Gauthier, Xuefang Lin-Shi. Losses Analysis of a Three-Phase Bidirectional Active Split Source Inverter for Traction Applications. IEEE Transactions on Transportation Electrification, 2025, 11 (1), pp.4327-4335. ⟨10.1109/TTE.2024.3460374⟩. ⟨hal-04829825⟩
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