Methods for increasing the efficiency of an asynchronous motor with increased speed fed from the PWM inverter

Issue title: Special Issue on the 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering

Guest editors: Sławomir Wiak, Paolo Di Barba and Krzysztof Komeza

Article type: Research Article

Authors: Dems, Maria^a | Komeza, Krzysztof^{a; *} | Rodríguez, Hugo González^b

Affiliations: [a] Institute of Mechatronics and Information Systems, Lodz University of Technology, Lodz, Poland | [b] Escuela Ingeniería Industrial, Universidad de Vigo, Vigo, Spain

Correspondence: [*] Corresponding author: Krzysztof Komeza, Institute of Mechatronics and Information Systems, Lodz University of Technology, Lodz, Poland. E-mail: komeza@p.lodz.pl.

Abstract: This paper presents various methods of increasing the efficiency of an asynchronous motor operating over a wide frequency range. Small power motor of rated power of 1.1 kW which is typically used in industrial washing machines and in centrifuges of blood samples was considered. The paper shows that using the presented methods it is possible to upgrade the efficiency of the motor to IE3 class or even IE4 class not only for 50 Hz, but for a wider frequency range.

Keywords: Induction motors, efficiency, no-load losses

DOI: 10.3233/JAE-182308

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 57, no. S1, pp. 61-71, 2018