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In this paper, the global operating point dependent losses of induction machines are studied by using a local transient loss formulation. The level of flux, the machine is operated at, depends on the operation mode of the inverter. Hence, for precise loss modeling of inverter driven induction machines at the machine design stage, the time and spatial distribution of flux density and the influence...
Industrial and academic interest on multiphase electric machines have been steadily increasing due to the advantages they provide compared to their three phase counterparts. They offer higher efficiency and better fault tolerance. The power is distributed across a larger number of machine phases and inverter legs, which allows the use of semiconductor devices with lower ratings. These advantages are...
A contactless power supply (CPS) for the cabin of a magnetically levitated elevator is presented in this paper. In contrast to commercial stand-alone contactless power supply systems, a combined CPS and electromagnetic guiding system (MGS) is introduced. The inductive energy transmission is realized by utilizing the magnetic circuit of an actuator of the linear guiding. With this approach two devices...
While analytical descriptions of the electrical machine perform very well with respect to computational time giving acceptable results when compared to measurements, one may sacrifice the low computational effort in order to obtain more accurate results by including a Finite Element Analysis of the electrical machine. With this approach it is possible to study effects such as saturation and mutual...
In the development process of electrical drive trains, consisting of the motor, the power electronics and the control scheme, it is difficult to predict the exact machine and control behavior in combination with the converter. Therefore, system simulations with analytical machine models embedded in a circuit simulation environment are performed. To increase accuracy by paying attention to alternating...
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