December 2009 - 26 articles
The motivation of this analysis is the need of high efficiency and high power density permanent magnet synchronous motor (PMSM) drives for use in electrical vehicle power trains. It is clear that the chosen electrical steel for the lamination stack p...
Battery powered cars have many merits over traditionally powered cars: they are more energy efficient (i.e. less GHG emissions), less polluting and quiet. However, not all electric cars are the same and there is a ‘break point’ at a range of around 5...
With the current state of technological development, the future of Electric Vehicles (EVs) seems to go through the hybridization of various Energy Storage Systems (ESSs). This strategy seeks to benefit from the best qualities of each available energy...
The design of a full electric vehicle (or battery electric vehicle (BEV)) requires the development and optimization of a complete electric powertrain, including battery, power electronics, electric machine, sensors and control system. When designing...
Nowadays car development time from concept approval to Job 1 is between 2 and 5 years (with an average of 3 years), but in the coming years is necessary to reduce it in order to achieve the optimal 12-month car. On the other hand the penetration rate...
Internal resistance is usually calculated by EIS (Electrochemical Impedance Spectroscopy) method, which gives unrealistic low internal resistance values. In this paper internal resistance will be calculated from the voltage drop with FreedomCAR metho...
In this paper, an intelligent electric power steering system is proposed to replace a traditional hydraulic power steering system and implemented in a real light hybrid electric vehicle. An intelligent fuzzy control algorithm is applied to yield basi...
The energy storage system is one of the key components of any electric vehicle powertrain. When lithium based energy storages are used it is important to investigate carefully the safety aspects, because the safety and cost were the main aspects whic...
Electrochemical capacitors (SC) are receiving increasing attention as possible enabling technologies in applications where high power is required for short times, such as in hybrid vehicles (HEV) and uninterruptible power systems (UPS). Moreover, the...
The bipolar design consists on identical cells which are stacked together. This technology offers several advantages because it simplifies cell-to-cell connections and so offers a lowering internal resistance for the whole battery. The bipolar batter...
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