758 research outputs found
Measurement of the Self-Sensing Capability of Synchronous Machines for High Frequency Signal Injection Sensorless Drives
No full textSignal injection sensor-less control for synchronous
machines is known to be afflicted by an estimation error dependent
on the load current. The estimation error is related to the cross-
saturarion and the saliency of the adopted synchronous machine.
A motor can be more or less suitable for signal injection sensorless
control compared to other motors with different designs or sizes.
A sensorless drive can even be afflicted by the control divergence
when the machine is highly saturated, resulting in a useless drive.
Moreover, even when the control converges, the actual current
control trajectory is different from the given reference. In this
paper, a measurement procedure of the convergence region, i.e. the
operating points where the motor can be successfully controlled
without a position sensor is presented and validated. In particular,
two different synchronous motors are considered, a permanent
magnet assisted synchronous reluctance motor (PMA-SynRM) and
a synchronous reluctance motor (SynRM
Experimental Investigation on the Self-Sensing Capability of Synchronous Machines for Signal Injection Sensorless Drives
No full textMURANO PIXEL. An experimental and shared research.
No full textThe paper describes the motivation, approach and working methodology of a research project financed with POR FSE funds by the Veneto Region. The research involved two universities (Università Iuav di Venezia and Università Ca’ Foscari Venezia), three glassworks in Murano, two network partners (Anteferma Edizioni and WASP) dedicated to innovation and the dissemination of innovation, and three young researchers. A network of professional figures, production realities and interlocutors developed around the figures institutionally involved in the project. These collaborations arose from the desire to share knowledge, production skills and experimentation. Moreover, the research was not limited to Murano but opened up this territory to international debate. This paper proposes the Venice Lagoon as a case study to develop research dedicated to the recycling of materials towards an increasingly comprehensive and complex approach. This is a challenge. The short circuit between the vitality of artisan work and research activity must be triggered
MURANO PIXEL. An experimental and shared research
No full textThe paper describes the motivation, approach and working methodology of a research project financed with POR FSE funds by the Veneto Region. The research involved two universities (Università Iuav di Venezia and Università Ca’ Foscari Venezia), three glassworks in Murano, two network partners (Anteferma Edizioni and WASP) dedicated to innovation and the dissemination of innovation, and three young researchers. A network of professional figures,
production realities and interlocutors developed around the figures institutionally involved in the project. These
collaborations arose from the desire to share knowledge, production skills and experimentation. Moreover, the
research was not limited to Murano but opened up this territory to international debate. This paper proposes the
Venice Lagoon as a case study to develop research dedicated to the recycling of materials towards an increasingly
comprehensive and complex approach. This is a challenge. The short circuit between the vitality of artisan work and research activity must be triggered
Phytophthora cactorum-strawberry interaction system: characterization of a novel pathogen-secreted protein causing host cultured cell death
No full textPurification and molecular characterization of a novel protein factor from Phytophthora cactorum causing toxicity in plant
No full textThe solution structure of a recombinant homologue of the fungal elicitor protein PcF reveals a helix-loop-helix motif
No full textPurification and properties of a new elicitin-like protein factor from Phytophthora nicotianae, endowed with phospholipase activity
No full textRotating High Frequency Injection and Ellipse Fitting Technique for Ringed-Pole Motor Sensorless Control
No full textIn this paper a sensorless control scheme is proposed for low-speed operation of the ringed-pole motor: a modified surface permanent magnet synchronous motor in which a copper turn has been wound around each rotor pole. This modification makes the motor suitable for high frequency injection methods. This paper investigates the application of the rotating voltage injection technique to the ringed-pole motor. Differently from the conventional demodulation approach, the measured currents are processed with a recursive ellipse fitting technique. The position is obtained in real-time from the parameters of the estimated ellipse. The proposed sensorless control scheme is discussed and validated with simulations
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