Outer-rotor ringed-pole SPM starter-alternator suited for sensorless drives

Morandin, Mattia; Bolognani, Silverio; Faggion, Adriano

doi:10.1109/sled.2011.6051551

Cited by 20 publications

(13 citation statements)

References 12 publications

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“…In some cases, combining different high frequency response of the machine allows an improvement of the self sensing capability of the machine (i.e. resistive saliency versus magnetic saliency) [12], [13].…”

Section: Introductionmentioning

confidence: 99%

Small-signal finite-element modeling of synchronous machines for sensorless applications

Alberti

Gyselinck

Morandin

et al. 2012

2012 XXth International Conference on Electrical Machines

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This paper presents a novel strategy to compute the high-frequency signal injection response of an electrical machine adopted in a sensorless electric drive. Thanks to the proposed strategy the self-sensing capability of the machine can be evaluated during the design process. A small-signal model of the machine in the d-q reference frame is derived and adopted to perform suitable finite-element (FE) simulation to compute the machine parameters at the injection frequency. The proposed procedure is validated by the comparison with other simulation strategies as well as with experimental results

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Section: Introductionmentioning

confidence: 99%

Small-signal finite-element modeling of synchronous machines for sensorless applications

Alberti

Gyselinck

Morandin

et al. 2012

2012 XXth International Conference on Electrical Machines

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“…Such currents can decrease the machine performance [20], [21]. In other cases, such eddy currents can be exploited in order to track a resistive saliency instead of a magnetic saliency [16], [17].…”

Section: High Frequency Rotor Lossesmentioning

confidence: 99%

“…At last, the ringed-pole PM prototype described in [17] is considered. It is a 27-slot 18-pole outer rotor PM machine.…”

Section: Ringed-pole Permanent Magnet Machinementioning

confidence: 99%

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Finite-Element Analysis of Electrical Machines for Sensorless Drives With High-Frequency Signal Injection

Alberti

Morandin

Gyselinck

2014

IEEE Trans. on Ind. Applicat.

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Abstract-A challenge during the design process of an electrical machine is the characterization of the various parameters in a computational time as short as possible. Frequently it is required the computation of the electrical machine parameters which are necessary for the tuning of the drive control algorithm. This paper deals with a strategy to compute the high frequency signal injection response of a sensorless controlled electrical machine. It allows to determine the self-sensing capability of the machine directly during the design process. Such a capability can be defined in any given operating point, for example along the Maximum Torque Per Amps trajectory. Then, also the high frequency machine parameters can be computed.In addition, the strategy proposed here requires a very short computational time to get such a data. After a magnetostatic field analysis, carried out so as to get the torque for a given current, the flux density distribution is stored and the differential reluctivity tensor is evaluated in each element of the mesh. Then, a time-harmonic analysis is carried out in a linearized structure so as to compute the d-q parameters at the injection frequency.In order to validate the proposed procedure, experimental results on different machine type are included in the paper. This allows to prove the reliability of the procedure as a valued tool for the characterization of the machine.

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“…Special attention can be given to the machine design in order to increase their anisotropy [38], [40]. It is also possible to increase the anisotropy of existing machines by adding a copper turn wound around the poles [41], [42]. The comparison between the different self-sensing methods are largely discussed in [15].…”

mentioning

confidence: 99%

High-Frequency Issues Using Rotating Voltage Injections Intended For Position Self-Sensing

Gabriel

Belie

Neyt

et al. 2013

IEEE Trans. Ind. Electron.

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Abstract-The rotor position is required in many control schemes in electrical drives. Replacing position sensors by machine self-sensing estimators increases reliability and reduces cost. Solutions based on tracking magnetic anisotropies through the monitoring of the incremental inductance variations are efficient at low-speed and standstill operations. This inductance can be estimated by measuring the response to the injection of high-frequency signals. In general however, the selection of the optimal frequency is not addressed thoroughly. In this paper, we propose discrete-time operations based on a rotating voltage injection at frequencies up to one third of the sampling frequency used by the digital controller. The impact on the rotation-drive, the computational requirement, the robustness and the effect of the resistance on the position estimation are analyzed regarding the signal frequency.Index Terms-AC motor drives, Sensorless control, Highfrequency signal-injection, Permanent-magnet (PM) machine NOMENCLATURE αβ axes of the stationary frame; qd axes of the synchronous frame; xy axes of the anisotropy frame; ϕ x angle of the anisotropy frame with respect to αβ; x denotes a space vector, that can be the current i, the voltage v, the flux ψ or the back-emf e PM ; a denotes an anisotropic parameter, that can be the resistance r or the incremental self-inductance l t ; a + , a -positive and negative parameters, corresponding to a; x(t) continuous-time value; ν s , T s sampling frequency and sampling period: ν s = 1/T s ; x(t [k] ) samples of the value at sampling instants t [k] ; x [k] mean of x(t) between two sampling instants;

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Outer-rotor ringed-pole SPM starter-alternator suited for sensorless drives

Cited by 20 publications

References 12 publications

Small-signal finite-element modeling of synchronous machines for sensorless applications

Small-signal finite-element modeling of synchronous machines for sensorless applications

Finite-Element Analysis of Electrical Machines for Sensorless Drives With High-Frequency Signal Injection

High-Frequency Issues Using Rotating Voltage Injections Intended For Position Self-Sensing

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