Integrated Battery Charger for Multiphase Traction Motor Drives
Integrated Battery Charger for Multiphase Traction Motor Drives
This work is related with the European project FITGEN (https://fitgen-project.eu/), aiming at developing and testing an advanced functionally integrated e-axle for electric vehicles. Among the other tasks, PoliTo is required to evaluate innovative solutions for On-board Battery Chargers (OBC), and in particular possible integration of the OBC with the traction drive.
The basic idea of integrated battery chargers (IOBC) is to exploit the vehicle motor and inverter also for battery charging. The drive can be reconfigured in traction mode (see Fig. 1) or in battery charging mode. In the latter, the motor is used as a reactive element (PFC boost inductor or isolation transformer), while the inverter regulates the energy conversion. In particular, the FITGEN project is developing a 6-phase traction motor drive, which gives additional degrees of freedom for the machine reconfiguration respect to traditional 3-phase motors (see an example in Fig. 2).
At the present status of the work, several possible topologies for isolated IOBCs have been simulated using PLECS, and a traction synchronous motor is available for experimental validation.
Further information in the attached document.
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Contacts:
Prof. Gianmario Pellegrino (gianmario.pellegrino@polito.it)
Paolo Pescetto (paolo.pescetto@polito.it)