Electromagnetic and thermal modeling of highly utilized PM machines
Electromagnetic and thermal modeling of highly utilized PM machines
- New search for: Dajaku, Gurakuq
- New search for: Dajaku, Gurakuq
This thesis deals with an accurate electromagnetic and thermal analysis of permanent magnet (PM) machines available for hybrid electric vehicle (HEV) application. New and effective electromagnetic and thermal models are developed and analyzed. The accuracy of these models is verified and validated by comparing with measurements and finite element method (FEM) calculations. The first part deals with the electromagnetic analysis of PM machines. During this analysis, a special attention is paid to the model parameters of the machine. The main focus during this analysis is to investigate the performances of the phase (synchronous) inductance of the salient pole machines. As result, a correct (new) expression for the phase inductance of this type of the machine is derived. It shows that this parameter is constant with the rotor position and doesn't vary as is assumed in many literatures. Afterwards, the analysis follows with the electromagnetic modeling of PM machines. Thanks to the new derived expression for the phase inductance, a simple mathematical model for PM machines is developed. It is based on the modified equivalent circuit per phase of the PM machine, and is developed based on the space-vector theory. The linear and non-linear operation cases of the PM machine are taken into consideration. The new mathematical model is simple and is very easy for manipulation. It is verified and validated by comparing it with other existing models and measurements. The second part of this thesis deals with the thermal analysis of electrical machines. Compared with other methods for the thermal analysis of electrical systems , the lumped-parameter thermal method is the mostly used method for thermal analysis of electrical machines. Generally this method is not applied correctly for elements with distributed heat generation. Based on modifications and improvements derived in this analysis, a novel lumped-parameter thermal model (lumped-parameter model with compensation thermal elements) for the thermal analysis of electrical machines with different rotor topologies is developed. Using this model, the thermal performances of a PM machine are predicted. FEM calculations are used to validate the accuracy of this model.
Document information
Electromagnetic and thermal modeling of highly utilized PM machines
2006
191 Seiten, Bilder, Tabellen, 27 Quellen
Theses
German
Dauermagnetmotor , Drehmoment , Elektroantrieb , elektromagnetisches Feld , Energiespeicher , Ersatzschaltung , Finite-Elemente-Methode , Gegeninduktivität , hartmagnetischer Werkstoff , Hybridfahrzeug , Induktivität , Kfz (Kraftfahrzeug) , konzentrierte Parameter , magnetische Sättigung , magnetischer Fluss , Magnetläufer , mathematisches Modell , Messen elektromagnetischer Größen , Messen magnetischer Größen , Messergebnis , Parallelschaltung , Raumzeiger , Schenkelpolmaschine , Serienschaltung , thermodynamisches Modell , Validierung , Verbrennungsmotor , Verifizierung , verteilte Parameter , Wechselrichter