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Recent innovation in vehicle systems has brought the extensive application of power electronics (PE) technology, which in turn has made the system more complex. The vehicle system is a multi-domain system, so that computer simulation has become an indispensable tool for vehicle system analysis. We propose a simulation method for the complex vehicle system based on the VHDL-AMS language. A multi-level...
The goal of this research is to reduce the common mode current in inverter system. To reach the goal, it is important to understand the behavior of common mode current precisely in the inverter circuits. Recently, computer simulation is widely used for this issue according to create good simulation model for individual electric component in used inverter system. The simulation results/accuracies are...
An EPS system requires large electrical power depending on steering torque. Recently, the required steering torque is getting larger especially for luxury sedans and large Sports Utility Vehicles. In heavy vehicles, the steering without driving and the emergency steering are becoming a very heavy load for a conventional 12 V battery system. Therefore, it is important to estimate the battery power...
Recent developments of power electronics technology, low-loss iron core materials and highly efficient permanent magnet, etc have made it possible to realize a small size, high or ultra-high speed, and high performance electrical drive system. We designed and built a trial ultra-high speed drive system of 2 poles, 5 kW, 240,000 rpm and had described our prototype system and showed some experimental...
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