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Yeah, that was some poor quality for IEEE. I'm pretty sure they confused "electromagnets" and "electromagnetism." As far as the "boost in efficiency" sentence

Yeah, that was some poor quality for IEEE. I'm pretty sure they confused "electromagnets" and "electromagnetism." As far as the "boost in efficiency" sentence, I reread the paragraph around it several times and still have no clue WTF they are trying to say.

plorg 2y ago
Spectrum is aimed at the general public and its articles are often university press release quality.
DoctorOetker 2y ago
> I reread the paragraph around it several times and still have no clue WTF they are trying to say. some advice: next time you don't understand some article, consider the possibility that it is not a case of: > Yeah, that was some poor quality for IEEE. I'm pretty sure they confused "electromagnets" and "electromagnetism." but that the problem might be your lack of understanding that you already detected. it's a press article, it can't teach you an undergraduate course in physics condensed to a few paragraphs of text...
- aidenn0 2y ago
  I have taken several undergraduate courses in physics. If you have some clue what they are saying with: > In some applications, these motors could offer an overall boost in efficiency ranging from 30 percent to close to 100 percent please illuminate. Brushless DC motors across a wide variety of applications already exceed 50% efficiency. Perhaps there are applications in which they cannot reach 50% efficiency, so a 100% boost in efficiency would be possible.
  - eightysixfour 2y ago
    The key is “in some applications.” Not in all applications. There are areas where brushless DC motors are inefficient, these are better in those areas - my guess is low speed, high torque use cases.
    - aidenn0 2y ago
      A) that's the sort of thing I wish the article had mentioned. B) I know it's research, but low speed high torque situations usually involve a reduction gear-set. They make some surprisingly compact ones these days.
      - eightysixfour 2y ago
        B) Yes, which involve losses and packaging changes. Exactly why a motor like this would be useful…

plorg 2y ago

Spectrum is aimed at the general public and its articles are often university press release quality.

DoctorOetker 2y ago

> I reread the paragraph around it several times and still have no clue WTF they are trying to say. some advice: next time you don't understand some article, consider the possibility that it is not a case of: > Yeah, that was some poor quality for IEEE. I'm pretty sure they confused "electromagnets" and "electromagnetism." but that the problem might be your lack of understanding that you already detected. it's a press article, it can't teach you an undergraduate course in physics condensed to a few paragraphs of text...

aidenn0 2y ago
I have taken several undergraduate courses in physics. If you have some clue what they are saying with: > In some applications, these motors could offer an overall boost in efficiency ranging from 30 percent to close to 100 percent please illuminate. Brushless DC motors across a wide variety of applications already exceed 50% efficiency. Perhaps there are applications in which they cannot reach 50% efficiency, so a 100% boost in efficiency would be possible.
- eightysixfour 2y ago
  The key is “in some applications.” Not in all applications. There are areas where brushless DC motors are inefficient, these are better in those areas - my guess is low speed, high torque use cases.
  - aidenn0 2y ago
    A) that's the sort of thing I wish the article had mentioned. B) I know it's research, but low speed high torque situations usually involve a reduction gear-set. They make some surprisingly compact ones these days.
    - eightysixfour 2y ago
      B) Yes, which involve losses and packaging changes. Exactly why a motor like this would be useful…