We’re pretty used to seeing electric motorcycle everywhere around us: in power tools, in hybrid and electric cars, home appliances, toys and countless other fields. What we don’t usually see is that the range of these machines is really wide. While most manufacturers strive to make them as small as possible, in some areas of practical use electric motors grow beyond imaginable dimensions.
This is not the largest electric motor being assembled. However, it is the most powerful, rated at 36.5 megawatts (49,000 hp). Things like this are used to propel naval ships. Image credit: Northrop Grumman Corporation / AMSC
A great advantage of electric machines is the high level of efficiency: modern models easily exceed 95% efficiency, making a significant difference compared to motors burning fossil fuels. Another good thing is that you can easily scale their power. You basically just make them bigger, with stronger, bigger frames stator and rotor, the wire is thicker. Plus, they don’t harm the environment – you just need to be able to generate electricity that’s produced in a nature-friendly way.
Biggest reciprocating engine in the world is Wärtsilä RT-flex96C. This 2,300-ton monster burns diesel and drives large container ships, generating 80,080 kW (107,390 hp). Can you guess what electric motor can do better than that? Watch the following video for an interesting story about the largest and most powerful electric motors in the world:
