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Commonly known analytical prediction methods for winding loss in switched reluctance machines provide comparatively inaccurate results but are very fast. Finite element analyses, however, yield rather exact results but at high computational cost. This paper introduces harmonic superposition as a third approach that promises sufficiently accurate loss estimations at low computational cost. At that...
At present, there are two typical electromotive drive train system (EDTS) configurations on the market. On the one hand, there are high voltage systems for conventional cars with system voltages in the range of 400 V – 800 V. In industrial truck and fork lifter applications, there are low voltage solutions with a system voltage of 80 V. A main question at this topic is: “Which system battery voltage...
In this paper, the optimisation possibilities of a quasi-resonant induction cooker are investigated. Simulations show that main losses of the induction cooker occur in the heating coil and the RC-IGBT (power switch). The performance of the coil can be improved mainly by minimising the coil resistance. The IGBT-optimisation is based on the reduction of tail current in soft switching mode. The tail...
It is very important for a battery electric vehicle to improve energy utilization efficiency because of limited energy storage on board. According to different viewpoint and requirements for battery electric vehicles, four kinds of evaluation methods were established, respectively. Analysis and comparison between different evaluation methods were performed with the help of simulation and bus demonstration...
The paper proposes a study of synchronization capability of line-start permanent magnet synchronous motor with small saliency ratio and very high cage resistance. The exemplified method is for a motor with the rated power of 3.5 kW, the synchronous speed of 3000 rpm, and the saliency ratio of 1.08.
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