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Permanent magnet magnetization state estimation using high frequency signal injection

Author:
Fernández Alonso, DanielUniovi authority; Díaz Reigosa, DavidUniovi authority; Guerrero Muñoz, Juan ManuelUniovi authority; Zhu, Zi-Qiang; Briz del Blanco, FernandoUniovi authority
Subject:

High frequency signal injection

Permanent magnet magnetization state

Segmented magnets

Variable flux machines

Publication date:
2016
Editorial:

IEEE

Publisher version:
http://dx.doi.org/10.1109/TIA.2016.2541616
Citación:
IEEE Transactions on Industry Applications, 52(4), p. 2930-2940, (2016); doi: 10.1109/TIA.2016.2541616
Abstract:

Permanent magnet (PM) magnetization state estimation is important both for torque control and monitoring in conventional permanent magnet synchronous machines (PMSMs). Furthermore, this can be critical for variable flux machines (VFM). Use of high frequency signal injection methods for PM magnetization state estimation in NdFeB magnets has already been proposed. These methods make use of the variation of the PM high frequency resistance with the PM magnetization state due to the magnetoresistive effect. This paper address the generalization of magnetization state estimation using high frequency signal injection to other types of magnets like SmCo and ferrite, as well as to other magnet structures, e.g. isolated and non-isolated segmented magnets. Use of the magnetoresitive effect for the detection of irreversible/reversible PM demagnetization will also be shown to be viable

Permanent magnet (PM) magnetization state estimation is important both for torque control and monitoring in conventional permanent magnet synchronous machines (PMSMs). Furthermore, this can be critical for variable flux machines (VFM). Use of high frequency signal injection methods for PM magnetization state estimation in NdFeB magnets has already been proposed. These methods make use of the variation of the PM high frequency resistance with the PM magnetization state due to the magnetoresistive effect. This paper address the generalization of magnetization state estimation using high frequency signal injection to other types of magnets like SmCo and ferrite, as well as to other magnet structures, e.g. isolated and non-isolated segmented magnets. Use of the magnetoresitive effect for the detection of irreversible/reversible PM demagnetization will also be shown to be viable

URI:
http://hdl.handle.net/10651/36741
ISSN:
0093-9994
DOI:
10.1109/TIA.2016.2541616
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  • Ingeniería Eléctrica, Electrónica, de Comunicaciones y de Sistemas [1093]
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