Fault-tolerant inverter for on-board aircraft EHA

Frédéric Richardeau (1) , Jérôme Mavier (2) , Hubert Piquet (3) , Guillaume Gateau (1)

1 LAPLACE-CS - Convertisseurs Statiques
2 LAPLACE - LAboratoire PLasma et Conversion d'Energie
3 LAPLACE-GENESYS - Groupe ENergie Electrique et SYStémique

In more-electrical aircraft, most of the flight surfaces are equipped with electro-hydrostatic actuators. A high reliability is mandatory, combined to fault-handling strategies for the VS inverter, which is a part of crucial importance of this equipment, controlling the power flows and the performances. The proposed topology uses a safe fourth-leg connected to the star tap of a standard PMSM winding. Fault-handling IGBT drivers and isolating AC switches are introduced in series with all the legs so as to confine a local inverter fault and to manage the post-fault operation. A modular and versatile design is proposed, based on a generic set of two legs including a local over-current / temperature monitoring and an optional self isolation capability under fault. In this paper, the authors present a complete lab test-bench, the DSP-FPGA digital control including a state chart and finally results in post-fault two-phase reconfiguration.

Mots clés: fault-tolerant inverter; on-board aircraft; fault-handling; PMSM control; IGBT drivers; DSP-FPGA digital control

Domaines: Sciences de l'ingénieur [physics]; Automatique / Robotique; Electronique

Frédéric Richardeau, Jérôme Mavier, Hubert Piquet, Guillaume Gateau. Fault-tolerant inverter for on-board aircraft EHA. 2007 European Conference on Power Electronics and Applications, Sep 2007, Aalborg, Denmark. pp.1-9, ⟨10.1109/EPE.2007.4417537⟩. ⟨hal-02516717⟩