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Viewing 1 to 30 of 2062
2016-11-22
Event
2016-10-25
Event
2016-10-24
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-09-27
Event
2016-08-23
Event
2016-07-26
Event
2016-06-28
Event
2016-06-15
Technical Paper
2016-01-1838
Janko Slavic, Matija Javorski, Janez Luznar, Gregor Cepon, Miha Boltezar
Abstract In electric motors the working torque results from the magnetic forces (due to the magnetic field). The magnetic forces are also a direct source of structural excitation; further, the magnetic field is an indirect source of structural excitation in the form of magnetostriction. In the last decade other sources of structural excitation (e.g. mechanical imbalance, natural dynamics of the electric motor) have been widely researched and are well understood. On the other hand, the excitation due to the magnetic forces and magnetostriction is gaining interest in the last period; especially in the field of auto-mobility. Due to the broadband properties of the magnetic field (e.g. Pulse-Width-Modulation(PWM), multi-harmonic excitation), the direct structural excitation in the form of magnetic forces is also broadband.
2016-06-15
Technical Paper
2016-01-1798
Quentin Buisson, Jean-Louis Guyader, Serge Puvilland, Xavier Carniel, Maximilien Soenen
Abstract The goal of the present study is to provide a simple method to compare structure borne noise sources in order to choose the most efficient one, considering the transmission of dynamic forces. It is well known that mechanical sources are not only dependent of the source itself but also of the receiving structure, in addition real sources cannot be reduced to a transverse force acting on the structure but more complicated effect like moment excitation must be taken into account. The advantage of the reception plate method is to characterize the source globally by the level of vibration of the reception plate whatever the type of excitation, the idea is basically to characterize mechanical sources as it is done for acoustical sources in reverberant rooms. A reception plate test bench has been developed to determine the power injected by mechanical sources. Two prototype plates have been designed in order to have different receiving mobilities.
2016-06-15
Technical Paper
2016-01-1836
Sylvestre Lecuru, Pascal Bouvet, Jean-Louis Jouvray, Shanjin Wang
The recent use of electric motors for vehicle propulsion has stimulated the development of numerical methodology to predict their noise and vibration behaviour. These simulations generally use models based on an ideal electric motor. But sometimes acceleration and noise measurements on electric motors show unexpected harmonics that can generate acoustic issues. These harmonics are mainly due to the deviation of the manufactured parts from the nominal dimensions of the ideal machine. The most recent VIBRATEC investigations have shown that the rotor eccentricities have the most relevant impact on acoustics of E-machines. Thus, the measurement of the rotor eccentricity becomes relevant to understand the phenomenon, quantify the deviation and then to use this data as an input in the numerical models.
2016-05-24
Event
2016-04-26
Event
2016-04-14
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-04-14
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-04-14
Event
This session covers powertrain control processes related to achieving stringent market fuel economy, emissions, performance, reliability, and quality demands of hybrid and electric powertrains. Topics include the control, calibration, and diagnostics of the engine, powertrain, and supporting electromechanical subsystems related to energy management.
2016-04-14
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-13
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-13
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-04-13
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-12
Event
2016-04-12
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-12
Event
This session covers recent advances in research, development and engineering of hybrid, plug-in hybrid, and electric powertrains and architectures with particular emphasis on new and near-production technologies.
2016-04-06
Event
2016-04-06
Video
It seems that everybody's getting into the electric car game. Recently Tesla unveiled its much-awaited Model 3, priced the same as the new Chevy Bolt that will beat Tesla to market. In this episode of SAE Eye on Engineering, Editor-In-Chief Lindsay Brooke looks at a newcomer to the EV world, Dyson. SAE Eye on Engineering also airs Monday mornings on WJR 760 AM Detroit's Paul W. Smith Show. Access archived episodes of SAE Eye on Engineering.
2016-04-05
Technical Paper
2016-01-0214
Kaushal Kumar Jha, Ravi Ranjan, Parvej Khan, Lakshmaiah Brahmasani
Abstract For the thermal management of an automobile, the induced airflow becomes necessary to enable the sufficient heat transfer with ambient. In this way, the components work within the designed temperature limit. It is the engine-cooling fan that enables the induced airflow. There are two types of engine-cooling fan, one that is driven by engine itself and the other one is electrically driven. Due to ease in handling, reduced power consumption, improved emission condition, electrically operated fan is becoming increasingly popular compared to engine driven fan. The prime mover for electric engine cooling fan is DC motor. Malfunction of DC motor due to overheating will lead to engine over heat, Poor HVAC performance, overheating of other critical components in engine bay. Based upon the real world driving condition, 1D transient thermal model of engine cooling fan motor is developed. This transient model is able to predict the temperature of rotor and casing with and without holes.
Viewing 1 to 30 of 2062

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