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The paper deals with the decentralized traction drive unit as alternative concept for an electrical drive train. The system consists of a dynamic storage, an inverter and the electrical machine, which form a high efficient separate module. The continuous system power of 25 kW goes back to drive cycle and vehicle analysis that allow a scaling to different vehicle classes by varying the module number...
Electric vehicles require traction machines with a high efficiency, a high power density and a low weight. Not to forget are aspects like a fail-safe motor operation, a safe maintenance and handling and an easy and cost-effective industrial production. Based on these requirements, a 25 kW PMSM was developed as decentralized scalable drive unit for traction applications. In contrast to conventional...
Electric vehicles (EV) require energy storage with high power and high energy-density. A hybrid-storage-system combining battery (high energy density) and ultra-capacitor (high power density) to supply a motor is logical. This paper will present an efficient way of dimensioning the ultra-capacitor of this system. The optimal size is determined by applying real driving cycles to a dynamics simulation...
The current research concerning hybrid and electric vehicles brings forward several new ideas and concepts for electric traction drives that are explicitly tailored to the requirements of the automotive sector. An alternative approach for winding design is the use of a concentrated bar winding with only one turn per coil, which reduces the effort and volume for insulation material and increases the...
Due to the current transition to electro mobility, requirements in terms of power density, specific power and efficiency are continually increasing for electrical drives. Thus, to improve these main quantities especially for electric traction drives, new and suitable approaches for motor optimization will be searched. The present paper introduces a new winding and voltage concept, with the aim of...
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