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This paper is focused on the design of a PMSM for the electric steering of a nose landing gear. The traditional hydraulic steering systems utilized in a nose landing gear are usually based on a rack and pinion solution with two hydraulic pistons at the external sides. The main idea proposed in the paper is the substitution of the hydraulic steering system with an electric steering system based on...
The paper deals with acoustic noise in permanent magnet synchronous motors (PMSM) with tooth concentrated armature windings. In particular, the noise emitted by this kind of motors is investigated with reference to high-torque low-speed applications. In these cases, due to the high number of poles, the stator yoke is usually thin and it is characterized by low natural frequencies that could lead to...
In order to reduce the environment pollution and the oil dependence of the aeronautical industry, in the last years more electric or all electric aircraft are considered the most effective solutions for next future. As well-known, an all electric aircraft uses a propulsion system based on electric motors in addition to the on-board electromechanical actuators. For these new propulsion systems the...
The growth of electric aircraft propulsion systems requires an accurate design of the battery energy storage system (BESS) and of the electric motor involved in the propulsion unit. The motor performance can be strictly linked to the characteristic of the BESS and to the variation of its parameters, as the output voltage. In this paper some design considerations are discussed with reference to the...
In this paper, an algorithm for the estimation of the output voltage and current of an Inductive Power Transfer is presented. The algorithm is based on the use of a Kalman filter and only the measurement of the primary and secondary current is necessary to estimate the conditions at the secondary side of the system. The proposed algorithm can be utilized in a fault tolerant control for the recharge...
Inter-turn short circuit faults are the most common stator winding faults in permanent magnet wind generators. Their early detection is vital to avoid subsequent damages which can led to catastrophic machine failures. To accomplish this task stator current signature analysis has been recently proposed for identifying inter-turn faults via a non-invasive, non-destructive and cost effective approach...
The paper deals with the control of three-phase voltage source rectifiers (VSRs) with an arbitrary number of voltage levels. By means of an approach borrowed from the “Direct Torque Control” of AC drives, the paper presents an enhanced direct power control (DPC) strategy for VSRs which directly controls both active (P) and reactive (Q) line power by considering the values of their time derivatives...
The paper presents a novel procedure for real-time detection of inter-area mode using distributed signals obtained by phasor measurement units (PMUs). Wide Area Control System signals could be intrinsically corrupted by noise and moreover characterized by data packets dropout due to transmission errors, buffer overflows and so on. In order to deal with the aforementioned troubles, an architecture...
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