The influence of magnetic hysteresis on HF injection based inductance calculation

Cordier, Julien; Landsmann, P.; Kennel, Ralph

doi:10.1109/ecce.2011.6063829

Cited by 18 publications

(3 citation statements)

References 10 publications

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“…The elliptic profile of the flux around the operating point indicates the presence of other elements in the circuit of Fig. 1a, and possibly the presence of other non-linear local phenomena as, for example, Rayleigh loops (as reported in [31]). It is worth to underline the growing width of the ellipsoid as a function of the frequency, which adds to the fact that the ellipse is swept faster for increasing frequencies.…”

Section: Experimental Measurements Highlighting the Presence Of Core mentioning

confidence: 79%

Self‐commissioning of flux linkage curves of synchronous reluctance machines in quasi‐standstill condition

Peretti¹,

Sandulescu²,

Zanuso³

2015

IET Electric Power Applications

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This study presents a self-commissioning procedure for the estimation of the flux linkage curves of synchronous reluctance machines. The procedure exploits a quasi-standstill condition obtained by imposing fast torque oscillations. The flux linkage is calculated by means of a pure integration of the voltages and currents. With respect to the existing procedures, the proposed one tackles the problem of the limited knowledge of the core losses in the electrical machine, which is shown to induce erroneous estimation results for the case under investigation. A theoretical analysis supported by extensive laboratory measurements is shown, proving the effectiveness of the proposed approach.

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Section: Experimental Measurements Highlighting the Presence Of Core mentioning

confidence: 79%

Self‐commissioning of flux linkage curves of synchronous reluctance machines in quasi‐standstill condition

Peretti¹,

Sandulescu²,

Zanuso³

2015

IET Electric Power Applications

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“…Based on the preceding two considerations, a good rule of thumb is to use the machine's nominal operating frequency. Using nominal operating frequency instead of excessively high injection frequency reduces the hysteresis effects that negatively affect the high-frequency-injectionbased measurement methods above 1 kHz [19]. The experimental results presented in this paper are all obtained for injection frequency set equal to the machine's nominal frequency.…”

Section: Test Current Selectionmentioning

confidence: 99%

Identification of the Magnetic Model of Permanent-Magnet Synchronous Machines Using DC-Biased Low-Frequency AC Signal Injection

Odhano

Bojoi

Rosu

et al. 2015

IEEE Trans. on Ind. Applicat.

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This paper proposes a simple procedure for accurate identification of the magnetic model of permanent-magnet synchronous machines through inverter supply. The proposed method accounts for the magnetic saturation and the cross-saturation effects. The identification methods reported in the literature may require a servomotor to drive the motor under test at controlled constant speed or the motor itself must accelerate and decelerate. The technique proposed here can be applied at standstill with or without rotor locking and uses a dc+ac injection strategy to identify the machine inductances to construct its magnetic model. The direct current sets the operating point, whereas the superimposed ac component estimates the inductance at that particular point. Small ac signal is injected to ensure local linearity of the magnetic characteristic. Saturation effects are automatically accounted for by the dc bias level, and cross-saturation effects are quantified through maintaining a constant current along the cross-axis. The magnetic model thus obtained can be used for optimal control of the machine and for accurate torque estimation in vectorcontrolled drives.

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“…In the past, additional aspects (as eddy current losses in permanent magnet, hysteresis of lamination) have been neglected during the analysis. Recent Manuscript works have started to take these aspects into account, as for example in [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Tests of the Sensorless Rotor Position Detection of Ringed-Pole Permanent-Magnet Motor

Alberti

Morandin

Bolognani

2014

IEEE Trans. on Ind. Applicat.

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To the aim of creating a high-frequency (HF) anisotropy in a surface-mounted PM machine conductive rings are placed around each pole such rings modify the d-axis HF impedance of the machine. A novel strategy is adopted to evaluate the HF signal injection response of such a ringed-pole electrical machine. The self-sensing capability of the machine is evaluated by means of a small-signal model of the machine in the d−q reference frame and finite-element simulations. The impact of the rings on the HF signals achieved in the analysis is validated by the comparison with experimental results.Index Terms-AC motor drives, finite-element (FE) simulations, high-frequency (HF) saliency, permanent-magnet (PM) machines, sensorless drives.

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The influence of magnetic hysteresis on HF injection based inductance calculation

Cited by 18 publications

References 10 publications

Self‐commissioning of flux linkage curves of synchronous reluctance machines in quasi‐standstill condition

Self‐commissioning of flux linkage curves of synchronous reluctance machines in quasi‐standstill condition

Identification of the Magnetic Model of Permanent-Magnet Synchronous Machines Using DC-Biased Low-Frequency AC Signal Injection

Analysis and Tests of the Sensorless Rotor Position Detection of Ringed-Pole Permanent-Magnet Motor

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