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Accidents between battery-operated vehicles and pedestrians are expected to increase as electric vehicles (EV) or plug-in hybrid vehicles (PHV) are widely used in near future because of small ambient noise of EV/PHV. To prevent such accidents, a portable alert system for pedestrians to detect approaching vehicle is proposed in this paper. The alert system exploits ultra-wideband impulse radio (UWB-IR)...
In this paper, an optimization is reported for the determination of time response (Tr) and power (P) of Electric Vehicle. The electric constant of back-electromotive-force, stator d- and q- axes inductances, switching period, battery voltage, stator resistance and torque gear ratio were selected as factors being able to influence the Tr and P. The optimization process was carried out with Doehlert...
Field bus technology has been widely used in vehicle electronics. For that distributed control system based on field bus can reduce electric system wiring, improve reliability, enhance information sharing, reduce repair difficulty, the application of field bus in electric drive vehicles will be the trend in future, and the time performance of field bus system will draw much attention. In order to...
This paper presents a methodology to make EV able to contribute to secondary frequency regulation, by participating in Automatic Generation Control (AGC). The aggregator entity is used in this methodology to act as intermediate between the AGC and the EV controllers. The case-study used is an approximation of the Portuguese transmission/generation network, including existing tie lines with Spain,...
An electric vehicle, installed motors to each wheel, manufacture and control. Lateral control of vehicle realize through speed control of each motor installed rear wheels and steering of front wheel. Steering assist device depending on the amount of manipulation of the steering wheel control the speed of each rear wheel is manufactured. Power source is AC SERVO Motor, it control by driver.
An electric vehicle can be powered by a single source or a combination of multiple sources, e.g. lead-acid batteries, solar cells, and fuel cells. Thus, coordination of different power sources for an electric vehicle has been recently becoming an important issue. The objective of this paper is to evaluate the performance of a multi-power system for an electric vehicle powered by lead-acid batteries...
This paper deals with the zero-power control of magnetic levitation (maglev) vehicles that use permanent magnets as well as electromagnets for levitation. The nominal load is levitated by permanent magnet and the current consumption for stable levitation can be reduced. In order to guarantee the tracking capability, the proposed controller is based on the state feedback controller and modified to...
In recent years, there have been increased interests and demands on electrical vehicles (EVs) as one of the green technologies. In order to overcome the critical issues of the batteries on EV introduction, KAIST introduced the new concept of electric charging method, called OLEV® (On-Line Electric Vehicle). OLEV® technology utilizes the inductive power transmission principal, so that the EV can be...
Compared with traditional fuel vehicles, electric vehicles need to deal with the problem of mapping relationship between accelerator pedal and motor-driving torque. At present, this problem is mainly resolved by means of PID control and Fuzzy control. However, the issues on stability, real-time performance, adaptability and complex achievement follow, too. In this paper, a neuromuscular-like model...
We present load characteristics of three-phase 12/8 switched reluctance motor (SRM) for the electric vehicle (EV), driving noise, and accelerating performance of the vehicle. Driving force characteristics of EV using SRM are calculated from the torque vs. speed characteristic. The driving force reaching the wheels is used to overcome the traveling resistance, and works as the propulsion power. Driving...
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