A new method of flux or inductance measurement for switched reluctance motors

Ray, W.F.; Erfan, F.

doi:10.1049/cp:19940953

Cited by 29 publications

(12 citation statements)

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“…An analogue hardware integration method was proposed by Krishnan and Materu (1989) and further developed by Ray and Erfan (1994). In the latter scheme, a large current pulse is applied to a motor phase with a discharging capacitor, and the corresponding flux linkage is measured with a hardware integrator.…”

Section: Indirect Flux Linkage Measurement Methodsmentioning

confidence: 99%

“…Hence, one of the most important problems in the field of SRMs is a practical and accurate instrumentation system for the SRM magnetic characteristics. As a result, several methods of flux linkage measurement have been proposed for experimentally measuring the flux linkage (Prescot and El-Khavashi 1959, Krishnan and Materu 1989, Ferrero and Raciti 1990, Ray and Erfan 1994, Lee and Pollock 1994a, 1994b, Ramanarayanan et al 1995, Walivadekar et al 1996, Sharma et al 1999). However, as will be discussed below, a disadvantage of the various previous methods is that they suffer from either relatively low accuracy or high complexity.…”

Section: Introductionmentioning

confidence: 99%

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Flux linkage measurement method for switched reluctance motors and inductor/transformers using a real-time DSP system

Cheok

Zhongfang

2002

International Journal of Electronics

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The switched reluctance motor (SRM) has received considerable attention from researchers for its many inherent advantages, and thus has become a popular research topic in the field of variable-speed drives as well as servo drives. The research on SRMs mainly includes its design, modelling and performance analysis, control, as well as applications. However, for verification of design, performance prediction and development of a high-performance sensorless control algorithm, accurate measurement of the magnetic characteristics of the SRM is most critical. Hence, one of the most important problems in the field of SRMs is a practical and accurate instrumentation system for the measurement of the SRM magnetic characteristics.This paper first describes an accurate, fully automated digital method for the measurement of the magnetic characteristics of SRMs, including on-line offset error removal and winding resistance estimation. In this method, a digital signal processor-based virtual instrumentation for measurement of flux linkage is developed. Then the results of measurement conducted on a four-phase SRM are presented. The accuracy of the measurement system is verified by comparing it with that found via a magnetics analyzer. Finally, the various sources of errors are discussed and their contributions to the errors are quantified. The scheme can also be used in general for transformers or inductors.

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Section: Indirect Flux Linkage Measurement Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flux linkage measurement method for switched reluctance motors and inductor/transformers using a real-time DSP system

Cheok

Zhongfang

2002

International Journal of Electronics

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“…4) To trigger the IGBT, the timer of DSP control the conduction time of the DC voltage source. At this moment, the A/D converter is started to sample the voltage and current of the phase winding [18]. The DC voltage source is shut off when the timer reached the set time.…”

Section: Measuring Stepsmentioning

confidence: 99%

“…There are many approaches for measuring the flux linkage of SRM, such as finite-element analysis [3], direct measuring flux linkage [4], direct measuring winding inductance: 1) Finite-element analysis method -We can calculate the magnetization curve of SRM by using finite-element analysis, but the different measuring interval that we select will cause different precision and the calculation is extremely complex. In addition, the modeling of this measuring method is very difficult because the structure of SRM is irregular.…”

Section: Introductionmentioning

confidence: 99%

A new Measuring Method of Flux Linkage of SRM

Zhang¹,

Kong²

2011

IJITCS

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“…An analog integration scheme has been developed in [8] in which a large current pulse is injected into a motor phase with a discharging capacitor, and the corresponding flux linkage is measured with a hardware integrator. However in this method, there is the need for a power resistor that exactly matches the motor phase resistance.…”

Section: ) Analog Integrationmentioning

confidence: 99%

Computer-based automated test measurement system for determining magnetization characteristics of switched reluctance motors

Cheok

Ertugrul

2001

IEEE Trans. Instrum. Meas.

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Abstract-This paper describes a fully automated method of measuring the magnetization characteristics (flux linkage versus current and position) of switched-reluctance (SR) motors. The measuring scheme was developed using a graphical programming environment (LabVIEW), a data acquisition card, and external interface hardware. The graphical programming method allows a high degree of software modularity and provides the features needed for sensor zero adjustment, data acquisition and analysis, and automated presentation of results. Furthermore, the experimental setup described in this paper can be used to obtain the magnetization characteristics of other electromechanical devices. Experimentally measured results from a test SR motor using the scheme are presented in the paper.

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A new method of flux or inductance measurement for switched reluctance motors

Cited by 29 publications

References 0 publications

Flux linkage measurement method for switched reluctance motors and inductor/transformers using a real-time DSP system

Flux linkage measurement method for switched reluctance motors and inductor/transformers using a real-time DSP system

A new Measuring Method of Flux Linkage of SRM

Computer-based automated test measurement system for determining magnetization characteristics of switched reluctance motors

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