This paper deals with a shaft-line-embedded multiphase electrical machine to be connected to the high-pressure shaft of an open-rotor jet engine. An asymmetrical six-phase induction machine (IM) is proposed for this application. The main focus of this paper is on the control of the six-phase IM, to verify its overload capabilities and postfault operations. The implemented control uses a direct-flux vector control scheme based on a double-stator approach, where each three-phase winding set is independently controlled. This way, the fault-tolerant behavior of the drive system is enhanced. Complete details of the adopted flux observer are included; torque and speed control loops are implemented in a dedicated multiple three-phase drive, and a scaled prototype (10 kW, 6000 r/min) has been tested. The overload capability has been verified both in generation and motoring mode, for different speeds and torque up to 150% of the rated one. Finally, the transitions between healthy and faulty modes are reported for open phases and encoder faults. The obtained results demonstrate the feasibility of the proposed drive solutions.

Control of Shaft-Line-Embedded Multiphase Starter/Generator for Aero-Engine / Bojoi, IUSTIN RADU; Cavagnino, Andrea; Tenconi, Alberto; Vaschetto, Silvio. - In: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS. - ISSN 0278-0046. - STAMPA. - 1:63(2016), pp. 641-652. [10.1109/TIE.2015.2472637]

Control of Shaft-Line-Embedded Multiphase Starter/Generator for Aero-Engine

BOJOI, IUSTIN RADU;CAVAGNINO, ANDREA;TENCONI, Alberto;VASCHETTO, SILVIO
2016

Abstract

This paper deals with a shaft-line-embedded multiphase electrical machine to be connected to the high-pressure shaft of an open-rotor jet engine. An asymmetrical six-phase induction machine (IM) is proposed for this application. The main focus of this paper is on the control of the six-phase IM, to verify its overload capabilities and postfault operations. The implemented control uses a direct-flux vector control scheme based on a double-stator approach, where each three-phase winding set is independently controlled. This way, the fault-tolerant behavior of the drive system is enhanced. Complete details of the adopted flux observer are included; torque and speed control loops are implemented in a dedicated multiple three-phase drive, and a scaled prototype (10 kW, 6000 r/min) has been tested. The overload capability has been verified both in generation and motoring mode, for different speeds and torque up to 150% of the rated one. Finally, the transitions between healthy and faulty modes are reported for open phases and encoder faults. The obtained results demonstrate the feasibility of the proposed drive solutions.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2625328
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