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Determination of d and q reactances of permanent-magnet synchronous motors without measurements of the rotor position
KTH, Superseded Departments, Electrical Systems.ORCID iD: 0000-0002-8990-3745
2000 (English)In: IEEE transactions on industry applications, ISSN 0093-9994, E-ISSN 1939-9367, Vol. 36, no 5, 1330-1335 p.Article in journal (Refereed) Published
Abstract [en]

The interest in permanent-magnet synchronous motors:(PMSMs) is increasing in a wide area of applications. Since most PMSMs will operate without a shaft sensor in the future, valuable: information for experimental determination of machine parameters will be lost,In this paper, therefore, a method is presented where the induced EMF and the d-axis reactance are determined in a no-load test and the q-axis reactance is determined in a load test. The load angle delta is determined from the load test by means of a new analytical method. In this way, no separate measurement of the load angle is required. The method is especially suitable for line-start PMSMs which normally operate with negative d-axis current and, therefore, are not saturated in the d-axis flux paths. Moreover, the method is very simple to carry out for any laboratory technician, since the only tests that have to be made are standard tests which are made on standard induction motors on a regular basis.

Place, publisher, year, edition, pages
2000. Vol. 36, no 5, 1330-1335 p.
Keyword [en]
dq model, permanent-magnet machine, power factor, synchronous reactances
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-20060ISI: 000089569700018OAI: diva2:338753

QC 20100525

NR 20140804Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2012-11-07Bibliographically approved

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