The paper presents a new approach to the selection of characteristic points on current-voltage curve (CVC) brush contact traction electric machines, for their approximation in form three different functions, with transition field weakening mode. problem raising resources by using design electro brushes. This constructive solution is consistent specific types motors used urban and rail transport...

The series Hybrid-Electric Drive (HED) architecture brings a significant range of potential benefits to military ground platforms. Electric-drive wheeled vehicles can feature electric traction motors in a conventional driveline, but also offer potential for motor incorporation into the axle or the wheel hub. The implementation of in-wheel hub drives presents challenges both in their design and ...

This study deals with the demands of traction motor design process in where not only the application set some design limits but also the control method set its own boundaries. It is a demanding task to design a traction application in where the driving speed varies from low speed up to field weakening area. Permanent Magnet (PM) synchronous reluctance motors are often used in traction applicati...

Electric machine is one of key parts in hybrid electric vehicles which affect dynamical and fuel consumption features and is the kernel to realize all kinds of strategy. Induction motor, PM synchronous motor, brushless DC motor, and switched reluctance motor are all applied in HEV. Traction motors for HEV are different from motors applied in industry. Load changes frequently and widely. Charact...

In this paper, methods of fault location are discussed in electrical traction single-end direct power supply network systems. Based on the distributed parameter model of the system, the position of the short-circuit fault can be located with the aid of the current and voltage value at the measurement end of the electrical traction line. Furthermore, the influence of the transient resistance, th...

Traction power supply equipments are the core part of the high-speed railway, so the maintenance of the power supply system is crucial for the security of the railway. Based on the research on the durable years of the traction power supply equipments, this paper puts forward the model of testing the traction power supply equipments of the reliable high speed railway. Some practical researches h...

background with increasing incidence of traumatic fractures, the use of orthopedic intervention such as traction has increased. inappropriate traction care may cause substantial morbidity and delay the patient rehabilitation. objectives this study was conducted to evaluate the quality of care for patients with traction in the orthopedic unit of kashan's shahid beheshti hospital, kashan, iran. p...

This paper will describe different possible control strategies that can be implemented in hybrid electric drivetrains. A non-exhaustive list will be established of possibilities applicable on series (SHEV), parallel (PHEV) and combined hybrid vehicles (CHEV). Some examples: optimal operating point or line, time deviation limits, location (city or country), State of Charge (SoC) and vehicle spee...

Abstract: This paper presents an on-board vehicular battery charger that integrates bidirectional AC/DC converter and DC/DC converter to achieve high power density for application in electric vehicles (EVs). The integrated charger is able to transfer electrical energy between the battery pack and the electric traction system and to function as an AC/DC battery charger. The integrated charger to...

Electric vehicle (EV) appears to be one of the viable solutions for the growing concerns for environmental protection and the fast rate of depletion of world fuel oil supply. EV can become a viable alternative to the internal combustion engine only if they are able to meet certain reliability, safety, performance, and cost criteria. In addition, electrical vehicles have serious disadvantages be...