Measurement of switched reluctance motor parameters

Ferková, Želmíra; Suchy, L'ubos; Cernohorsky, Josef

doi:10.1109/edpe.2017.8123247

Cited by 5 publications

(7 citation statements)

References 7 publications

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“…Further, for the chosen average value of 1.5 A, the 'ir' drop is equal to 1.05 V (1:5 Â 0:7), which is less than 3% of the applied DC-bus voltage and hence it is also neglected. Finally, from (14) we can write…”

Section: Selection Of Hysteresis Bandmentioning

confidence: 99%

“…In a broad perspective, the measurement methods can be categorised as off-line and on-line methods. In case of off-line measurements, the recorded data of applied phase voltage, using either a single-phase AC supply [13,14] or a pulsed DC source [15][16][17][18][19], and phase currents are obtained from the repeated experiments performed by locking the rotor of an SRM at different angular positions. They are further processed either analytically or by means of a software subroutine in a computer [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…In case of off-line measurements, the recorded data of applied phase voltage, using either a single-phase AC supply [13,14] or a pulsed DC source [15][16][17][18][19], and phase currents are obtained from the repeated experiments performed by locking the rotor of an SRM at different angular positions. They are further processed either analytically or by means of a software subroutine in a computer [13][14][15][16][17][18][19]. The precision of the methods [13][14][15][16][17][18][19] depends on the locking mechanism and the resolution of angular rotation of the rotor in each step of measurement.…”

Section: Introductionmentioning

confidence: 99%

“…They are further processed either analytically or by means of a software subroutine in a computer [13][14][15][16][17][18][19]. The precision of the methods [13][14][15][16][17][18][19] depends on the locking mechanism and the resolution of angular rotation of the rotor in each step of measurement. Moreover, the methods also require extra mechanical arrangements and hardware to rotate and lock the rotor precisely at planned discrete and numerous positions throughout the rotor tooth pitch.…”

Section: Introductionmentioning

confidence: 99%

“…The authors also claim novelty of the present work in terms of absence of any additional computational platform over and above that required to operate the SRM-based drives. Additional mechanical hardware is also not used for locking the rotor precisely at planned discrete positions, unlike [13][14][15][16][17][18][19]. Apart from this, the proposed method being online in nature does not utilise any soft computing/regression techniques for prior training/learning of the model unlike [20,21].…”

Section: Introductionmentioning

confidence: 99%

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A novel and precise on-line digital measurement of unsaturated phase inductance of a switched reluctance motor

Roy

Sengupta

2019

Sādhanā

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This paper presents a simple and accurate method for the on-line measurement of the unsaturated phase inductance of a switched reluctance motor (SRM). The basic principle behind the approach is to obtain the instantaneous flux linkage of the phase, which when divided by the instantaneous current of the corresponding phase will dynamically generate the phase inductance for that rotor position. A numerical division process, based on Newton-Raphson (N-R) iterative method, has been implemented using the sensed current and estimated flux linkage on an FPGA platform to generate the inductance value at each instant. It is ensured in the practical implementation that the iron parts do not saturate. It has been also verified through simulation using standard finite-element method (FEM) software packages. Further, it has been established that the effect of mutual inductance is negligibly small. The proposed method will give the true value of the unsaturated inductance of the phase identified for diagnosis/measurement. Practical results, for the experiments conducted on an existing 4 kW, 1500 rpm Oulton-make SRM, have been also presented. They are further validated against the results obtained from FEM analysis and against previously published results of the phase inductance values for this SRM. The results are found to be in very good agreement.

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Section: Selection Of Hysteresis Bandmentioning

confidence: 99%