GE researchers have developed a traction motor for hybrid and electric vehicles (EVs) that they claim delivers higher power density and better efficiency at a lower cost. The traction motor was developed as part of a $5.6m (£3.5m) US Department of Energy project to extend the range of EVs and hybrids.
The motor operates at a peak power output of 55kW, delivering nearly twice the power density, and thus acceleration, of existing EV motors.
It is also around three to five per cent more efficient since the required torque is achieved using much lower DC bus voltage — as low as 200V versus 650V in existing motors.
Most significantly, GE claims the motor operates continuously at 105ºC over a wide speed range…
The widespread adoption of electric vehicles (EVs) will lead to greater consumption of electricity. As a result, existing electricity systems will have to be reconfigured to meet these needs, and this is where the smart grid can play an important role, according to a report released by the International Transport Forum.
Smart grid technology can make it possible for EVs to proliferate without overloading the electric supply industry. At the same time, these vehicles may be useful for matching intermittent solar and wind power supplies to demand, soaking up excess off-peak power supply and feeding power back into the grid when needed. In addition, EVs may be able to produce a backup supply of power in case of power cuts,…
The cost of lithium-ion batteries used in electric vehicles could tumble by more than 70 percent by 2025 as rising oil prices and stringent fuel economy standards push automakers to build more of these cars, according to a studyrecently released by McKinsey & Co .
McKinsey predicts the price of a complete lithium-ion battery pack could fall from between $500 and $600 per kilowatt hour now to about $200 in 2020 and to $160 by 2025.
According to the study, factors leading to the decrease in cost can be attributed to the manufacturing of these batteries on a larger scale. This accounts for one-third of the potential price reduction by 2025. Moreover, battery costs will also fall as the consumer electronics…