The biggest consumers of electricity in the residential sector and in buildings overall are space heating and cooling, lighting, water heating, space heating, appliances, and electronics. In the commercial sector, this comes from lighting, heating, ventilation, and air conditioning. Finally, in manufacturing, more than half of electricity powers motors (machine drives), with other significant uses covering heating and cooling.

The connection is clear. Heating, ventilation, and air conditioning (HVAC), appliances, and other electric machines that use most of the electricity in the grid all have motors and/or pumps. With the population numbers growing and industries developing, the number of motors and pumps will keep going up.

And their efficiency is what will keep the energy use high and the related harmful emissions even higher. Making electric machines more efficient would be a huge step towards solving these problems, saving energy, and contributing towards the fight against climate change.

What does efficiency mean?

When talking about machine efficiency, we can use the example of a motor inside an electric vehicle. Efficiency of the entire e-powertrain system is a measure of the amount of energy lost from the onboard battery store throughout its journey to the drive wheels of the vehicle. It’s a combination of:

  • losses during the DC to AC current conversion,
  • losses in the high-current cables connecting the PE module to the motor,
  • electrical losses within the motor,
  • magnetic losses in the motor,
  • friction in the bearings of the motor, and
  • friction/oil churning losses in the transmission.

When it comes to pumps, in water handling alone, pumping can consume up to 85% of the energy used. And pumps are used in many more systems and applications, so improving efficiency by even a small percentage would save significant amounts of energy and dramatically reduce the related CO2 emissions.

We know that efficiency is about the energy loss during use caused by, not only other parts of the machine, but also by the imperfect design or the motor or pump itself. It’s time for a change.

Can we do better?

Designing more efficient motors can help us solve a lot of issues with energy costs and unnecessary emissions. What’s more, if the motors and pumps were scalable, we could have them used in manufacturing and large industries without sacrificing production.

For example, ePropelled’s motors are more than 90% efficient, while current induction technology is only 75% efficient. In the EV market, eDTS increases the system level efficiency by at least 15%, ensuring a longer range for the same battery size or a smaller battery with the same range.

Better results and better technology are not only possible, they are already here.