AC induction motors are everywhere, from ceiling fans to vehicles. They’re reliable, simple, and rugged — but there are some disadvantages. It’s difficult to control the speed ...

Electric bicycles may require less pedaling effort than regular bikes, but … their riders still have to shift gears. Paris-based electric mobility company Valeo is out to change that, by combining a ...

When it comes to e-bike systems, there are mainly two things manufacturers focus on: performance and weight. Powerful e-bike systems tend to be heavy, but produce massive amounts of power and torque.

For economic reasons, not every lake with a dam can support a hydroelectric power plant. Some rivers or creeks are dammed for flood control or simply for recreation, and don’t have the flow rate or ...