The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Battery is the primary and only source of power in the electric vehicle. Electric vehicle batteries differ from normal starting, lighting, and ignition batteries because they are designed to give power over sustained periods of time. Traction batteries are designed with a high ampere-hour capacity. Batteries for electric vehicles are characterized by their relatively high power-to-weight ratio, energy...
There is currently a trend in the automotive industry to replace combustion engines with electric motors or a combination of an electric motor and a combustion engine, thereby substantially reducing the environmental impact of automobiles by reducing or completely eliminating car emissions. In this paper various strategies for positioning of smoke sensor within the battery pack assembly for smoke...
With high elevation in magnet prices in recent times, switched reluctance machine (SRM) are gaining importance, due to the simple and rugged construction, low cost, and ability to operate over a wide speed range at constant power. SR machine operates due to the variable reluctance in the air gap, hence displays a highly nonlinear inductance behavior. This makes it impossible to carry out predictions...
Bus bars are very critical components for power distribution in Electric Drive systems. The increase of power electronic components on vehicles, and their interaction, has increased the possibility of noticeable and destructive amplitude harmonics at resonant frequencies to exist in the power distribution network. The presence of stray inductance of bus bars along with the capacitance of the inverters...
Future trend for automotive and off-highway vehicles is demanding higher reliability and efficiency in terms improved product performance improve fuel efficiency and enhance or delight user experience. This paper focuses on the development & integration of electric modules in powertrain architecture of off-highway vehicles.
Electrical Safety is the most important factor to be considered while circuit design for any EV modules. EVs contain very high power battery of around 200Ah that can be very devastating and extremely hazardous in case of any abnormalities. Hence Safety protection in the electrical circuits is the very critical and requires 100% accuracy. Electric vehicles contain many complicated circuitries. These...
The vibration of a vehicle often causes discomfort, fatigue and even injury to passengers. Therefore reducing vibration levels to a tolerable range is one of the most important goals in electric vehicle design. Since ride comfort is determined by road roughness and vehicle properties, the uncertainty of ride comfort results from uncertainties of road roughness and vehicle property data. A general...
The Current Methodologies of virtual and Automated Testing on touch screen displays are limited, since, minor screen changes and display software updates will cause the automated tests to fail and hence there will be a need to fix them. Addition of new items to a drop-down list, movement of buttons, reusability and conversion of Test scripts for similar devices will be a cumbersome job. The general...
Electronics in automotive industry is ever increasing to enable complex features in the machines, which in turn increases the communication between multiple Electronic Control Units in the vehicle. This increased communication necessitates a very robust and deterministic network. This paper focuses and various methodologies of network modeling and simulation to predict the health of the network. This...
One of the major concerns for Hybrid and electric cars would be its overall crash safety performance. Besides the structural integrity of the vehicle and High voltage battery enclosure, the routing of the High Voltage (HV) cable is important. The packaging of the cable is based on two main factors namely its operational functionality and safety from crash impacts. The functioning of the cable depends...
Hybridization of Automobile powertrain is a powerful strategy towards reducing emissions and enhancing fuel economy. However the benefit of a HEV, depends solely on the energy management strategy involved. A variety of algorithms have been proposed so far, which are often computationally complex and/or require several iterations of vehicle testing. Herein, we propose a very cost-effective and time-saving...
This paper presents a new control scheme for sensorless starting and running of a permanent magnet brushless DC motor (PMBLDCM) while using single current sensor for control of motor torque. The starting is carried out using pulsed starting technique and control is shifted to back EMF sensing method under running condition. The proposed control scheme uses aligning the rotor of PMBLDCM at a known...
Friction drag of bearings is a major energy loss causing parameter in a typical vehicle power train. This paper explains power consumption reduction in an electric vehicle by reducing friction drag of front axle bearings. The design parameters in bearings are modified to minimize friction drag and thus increase overall range of the vehicle. Testing results show that optimization of bearing design...
This paper presents an experimental study of an Inductively Coupled Power Transfer (ICPT) system using a full bridge converter operating at variable frequency. Equivalent circuit model for ICPT systems are used to represent the total impedance seen by the power supply, by combining the primary and secondary network is detailed. A variable switching frequency controller is used to control the switching...
India is the third largest market for automobiles with electric vehicles constituting less than 1% of total automobiles on-road. One of the primary factors being lack of public charging infrastructure. This paper presents the potential to increase charge stations by utilizing electricity from electric poles and charge electric vehicles, while charging rate is limited through a controller which takes...
Hybrid Electric Vehicles driven by electric vehicles are very promising in reducing emissions by maintaining high efficiency. The presence of inverters for the electric vehicles adds additional cost and maintenance to the overall system. Line start PM motor is a very encouraging technique for hybrid electric vehicles without any need of inverters and requires very less space. A line start permanent...
When the vehicle parks in direct sunlight conditions, the cabin will form a high-temperature thermal environment in hot weather. Drivers would turn on the air-conditioning with relatively high gear in the most conditions to reduce the cabin temperature, which could affect the life of equipment, resulting in energy waste and increasing emissions. This study adopted solar energy in the ventilation system...
As we see in our regular life the accidents taking place by rash driving and lack of concentration on the traffic information boards. In order to assure safer and smarter driving, various driving assistance systems are increasingly considered in research. Current vehicle driving assistance systems uses number of technologies such as radar, image processing, RFID, IR, computer vision etc. These technologies...
This paper focuses on methodology of optimization of the torque split and gear shift points in any drive cycle for Hybrid Electric vehicle. The methodology evaluates objective parameter defined at each and every operating point for Internal Combustion Engine (ICE) and electric motor-generator (E-machine) for all possible torque split and gear shift combinations at a particular instant and finally...
This paper deals with simulation of fuel cell hybrid electric vehicle (FCHEV) configuration with special attention to sliding mode controller (SMC) for boost converter (BC). MATLAB/Simulink software tool is used for the simulations. Proportional-integral (PI) and SMC for fuel cell (FC) side BC is modeled and simulated. The SMC shows slightly lesser oscillations before steady state as compared with...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.