In this paper it is shown how to obtain a low-cost, high-resolution and fault-robust position sensing system for permanent magnet synchronous motor drives operating in safety-critical systems, by combining high-frequency signal injection with binary Hall-effect sensors. It is shown that the position error signal obtained via high-frequency signal injection can be merged easily into the quantization-harmonic-decoupling vector tracking observer used to process the Hall-effect sensor signals. The resulting algorithm provides accurate, high-resolution estimates of speed and position throughout the entire speed range; compared to state-of-the-art drives using Hall-effect sensors alone, the low speed performance is greatly improved in healthy conditions and also following position sensor faults. It is envisaged that such a sensing system can be successfully used in applications requiring IEC 61508 SIL 3 or ISO 26262 ASIL D compliance, due to its extremely high mean time to failure and to the very fast recovery of the drive following Hall-effect sensor faults at low speeds. Extensive simulation and experimental results are provided on a 3.7 kW permanent magnet drive.

Low-cost, high-resolution, fault-robust position and speed estimation for PMSM drives operating in safety-critical systems / De Donato, Giulio; Scelba, Giacomo; Pulvirenti, Mario; Scarcella, Giuseppe; Giulii Capponi, Fabio. - In: IEEE TRANSACTIONS ON POWER ELECTRONICS. - ISSN 0885-8993. - STAMPA. - 34:1(2019), pp. 550-564. [10.1109/TPEL.2018.2820042]

Low-cost, high-resolution, fault-robust position and speed estimation for PMSM drives operating in safety-critical systems

De Donato, Giulio;Giulii Capponi, Fabio
2019

Abstract

In this paper it is shown how to obtain a low-cost, high-resolution and fault-robust position sensing system for permanent magnet synchronous motor drives operating in safety-critical systems, by combining high-frequency signal injection with binary Hall-effect sensors. It is shown that the position error signal obtained via high-frequency signal injection can be merged easily into the quantization-harmonic-decoupling vector tracking observer used to process the Hall-effect sensor signals. The resulting algorithm provides accurate, high-resolution estimates of speed and position throughout the entire speed range; compared to state-of-the-art drives using Hall-effect sensors alone, the low speed performance is greatly improved in healthy conditions and also following position sensor faults. It is envisaged that such a sensing system can be successfully used in applications requiring IEC 61508 SIL 3 or ISO 26262 ASIL D compliance, due to its extremely high mean time to failure and to the very fast recovery of the drive following Hall-effect sensor faults at low speeds. Extensive simulation and experimental results are provided on a 3.7 kW permanent magnet drive.
2019
aerospace; automotive; brushless; electronic mail; fault tolerance; halleffect; magnetic sensors; observer; permanent magnet; position sensor; redundancy; reliability; resolution; safety; safety; self-sensing; sensor systems; sensorless; signal injection; standards; synchronous motor; electrical and electronic engineering
01 Pubblicazione su rivista::01a Articolo in rivista
Low-cost, high-resolution, fault-robust position and speed estimation for PMSM drives operating in safety-critical systems / De Donato, Giulio; Scelba, Giacomo; Pulvirenti, Mario; Scarcella, Giuseppe; Giulii Capponi, Fabio. - In: IEEE TRANSACTIONS ON POWER ELECTRONICS. - ISSN 0885-8993. - STAMPA. - 34:1(2019), pp. 550-564. [10.1109/TPEL.2018.2820042]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1113792
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