DC Motor Efficiency: Why Does Efficiency Plot Look Like Parabola?

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SUMMARY

The efficiency plot of DC motors typically resembles a parabola due to the interplay of various factors affecting performance, including load conditions and losses. Key contributors to efficiency loss include air resistance, which becomes significant at higher speeds, and internal friction. Understanding these dynamics is crucial for optimizing motor performance in practical applications. The discussion highlights the importance of researching these factors to gain a comprehensive understanding of DC motor efficiency.

PREREQUISITES
  • Basic understanding of DC motor operation
  • Knowledge of efficiency metrics in electrical engineering
  • Familiarity with load conditions and their effects on motor performance
  • Awareness of factors affecting mechanical losses, such as air resistance
NEXT STEPS
  • Research the impact of load conditions on DC motor efficiency
  • Explore the effects of air resistance on motor performance at various speeds
  • Learn about internal friction and its contribution to efficiency losses
  • Investigate methods for optimizing DC motor design for improved efficiency
USEFUL FOR

Electrical engineers, robotics enthusiasts, and anyone involved in the design and optimization of DC motors will benefit from this discussion.

George444fg
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So I am doing an experiement about DC motors, and I would like to know why the efficiency plot looks like a parabola. What is the structure behind that. Thank you in advance
 
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George444fg said:
So I am doing an experiement about DC motors, and I would like to know why the efficiency plot looks like a parabola. What is the structure behind that. Thank you in advance
What have you found so far in your searching? I did a Google search on what affects dc motor efficiency and got lots of good hits. Have you tried that search yet? :smile:
 
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berkeman said:
What have you found so far in your searching? I did a Google search on what affects dc motor efficiency and got lots of good hits. Have you tried that search yet? :smile:
To be honest I did it simultaneously, and obviously at the end I found out what I was seeking . Thank you
 
Great! Yeah, there's lots of good info out there. I didn't realize that air resistance losses were significant at higher motor speeds...
 

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