When the machine is at high speed, serious problems occur, such as high frequency loss, difficult thermal management, and the rotor structural strength insufficiency.
In this paper, the performances of two high-speed permanent magnet generators (HSPMGs) with different rotational speeds and the same torque are compared and analyzed.
The two-dimensional finite element model (FEM) of the 117 kW, 60 000 rpm HSPMG is
established. By comparing a calculation result and test data, the accuracy of the model is
verified. On this basis, the 40 kW, 20 000 rpm HSPMG is designed and the FEM is established. The relationship between the voltage regulation sensitivity and power factor of the
two HSPMGs is determined. The influence mechanism of the voltage regulation sensitivity is further revealed. In addition, the air-gap flux density is decomposed by the Fourier
transform principle, and the influence degree of different harmonic orders on the HSPMG
performance is determined. The method to reduce the harmonic content is further proposed.
Finally, the method to improve the HSPMG overload capacity is obtained by studying the
maximum power. The research showed that the HSPMG at low speed (20 000 rpm) has
high sensitivity of the voltage regulation, while the HSPMG at high speed (60 000 rpm) is
superior to the HSPMG at low speed in reducing the harmonic content and increasing the
overload capacity.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00