Study of the temperature processes at sensorless determination of electrical product magnetic characteristics

International Scientific and Practical Conference on Innovations in Engineering and Technology

工业技术;自然科学

Shirokov, K.M.^1 ; Shaykhutdinov, D.V.^1 ; Narakidze, N.D.^1 ; Kirievskiy, E.V.^1 ; Gorbatenko, N.I.^1

Platov South Russia State Polytechnic University (NPI), Prosveschenija St. 132, Novocherkassk

346400, Russia^1

关键词: Analytical results;    Electrical parameter;    Electrical products;    Functional relationship;    Magnetic characteristic;    Temperature changes;    Temperature error;    Winding resistances;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/441/1/012049/pdf
DOI  :  10.1088/1757-899X/441/1/012049

来源: IOP

【 摘 要 】

Actual is the use of senseless devices for determining the webere-ampere characteristics of electrical products. However, these devices are characterized by the error in determining the flux linkage, caused by inaccurate determination of the active component of the winding resistance during the test. In classical senseless devices, the active component of the winding resistance is determined immediately before measuring the webere-ampere characteristic and is then applied as a constant value. Thus, the error in determining the active component of the winding resistance is due to the error in determining its initial value and the temperature change in the active component of the winding resistance during the determination of the magnetic characteristic. The analysis of the temperature error of the sensorless devices is carried out. A functional relationship between the error in determining the flux linkage and the electrical parameters of the winding was revealed. This makes it possible to evaluate both the absolute and relative error in the determination of flux linkage and conclude that it is necessary to apply methods for compensating for the error in determining the active component of the winding resistance. The obtained analytical results are confirmed by modeling in the program of circuit analysis. The developed procedure for estimating the error of the flux-linkage determination is also verified on the experimental data.