Aerodynamic drag is a force which resists vehicle motion and its magnitude is function of the speed. It depends on vehicle shape and size while its impact is greatest at higher speeds. While designing a purely urban vehicle its influence can be omitted or simplified to some degree but for more unive...
Electric vehicles were in fact introduced before internal combustion engine vehicles. Similarly, the wheel hub motors have been invented as early as in late XIX century. What were the obstacles which suppressed the innovations until their rediscovery in the recent years?
We are excited to announce that our new website is powered on and running! As engineers, we recognized the need to keep our co-workers, business partners, clients, and the public informed of who we are, what we do, and how we can help. This new website is a great medium to aid us in showcasing all t...
There are many standardized drive cycles for various types of vehicles available from different sources. While the cycles are known to be used for enviromental compliance tests procedures, they can be also very helpful wile designing and testing a vehicle electric drive or other components.The drive...
The idea of testing whole vehicles while at rest was first conceived by locomotive engineers before being adopted by the automotive industry. Last steam locomotives build in the UK were tested on multiple axle unit with large eddy-current dynamometers with rollers connected to each driven axle. The...
While designing a synchronous electric machine or a whole electric drive it is often useful to estimate its external characteristics \(T(\omega)\). Such plot can be used to predict practical speed range of a drive given its maximum voltage and current limits or conversly to find required parameter...