Compensation of Stray Load and Iron Losses in Small Vector-Controlled Induction Generators (CROSBI ID 264091)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Bašić, Mateo ; Vukadinović, Dinko ; Grgić, Ivan
engleski
Compensation of Stray Load and Iron Losses in Small Vector-Controlled Induction Generators
Standard vector controllers for induction machines (IMs) are based on the conventional IM model. Consequently, they are unaware of the existence of stray load and iron losses. However, these losses may induce a considerable mismatch between the actual and reference flux vectors in vector controllers. This mismatch is greatly affected by the operating flux and load. In this paper, two different approaches are considered for compensation of this mismatch: the first involves investment in IMs with low stray load and iron losses, whereas the other involves development of a control algorithm in which both these losses are compensated. The performance of the developed vector controller is compared to the standard controller and tested on three small IMs of different efficiency class and rotor cage material (aluminum vs. copper). Simulation and experimental testing is carried over wide ranges of loads, speeds, and magnetization levels. The estimated rotor speed is used as a measure of the controller detuning. A standard estimator which utilizes rotor flux-linkage estimates within the model reference adaptive system is here for the first time modified to include stray load and iron losses. Finally, problems regarding numerical integration, sampling frequency, and temperature-induced variations of IM parameters are addressed.
Detuning ; Estimation error ; Induction machines ; Iron losses ; Stray load losses ; Vector control
Ovaj je rad financirala Hrvatska zaklada za znanost projektom (IP-2016-06-3319)
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Podaci o izdanju
34 (3)
2019.
1677-1685
objavljeno
0885-8969
1558-0059
10.1109/TEC.2019.2914309