Cost Efficiency Study Comparation of PMSM and BLDC Motor

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Discussion Overview

The discussion focuses on comparing the cost efficiency of Permanent Magnet Synchronous Motors (PMSM) and Brushless DC Motors (BLDC). Participants explore the necessary data and considerations for conducting a comparative study, including application constraints and motor characteristics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant emphasizes the importance of defining the application for which the motors will be used, suggesting that each motor type excels in different scenarios.
  • Another participant notes that different excitation models and magnet shapes can be utilized for both BLDC and PMSM, indicating variability in design choices.
  • A participant shares their experience using simulation software to compare output parameters and material usage, recommending tools like EMWorks studio for those less experienced in finite element analysis.
  • Reference to textbooks on PMSM machines is made, with one participant mentioning Dr. Hendershot's resources for learning the basics.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best approach to the study, with differing views on the importance of application definition and the tools to use for analysis.

Contextual Notes

Participants highlight the need for careful consideration of application constraints and the variability in motor design, which may affect the analysis outcomes.

Who May Find This Useful

This discussion may be useful for individuals interested in motor selection for specific applications, cost efficiency analysis, and those looking for resources on PMSM and BLDC technologies.

sambbal
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I want to do a study comparation of PMSM and BLDC Motor. I want to analyze the cost efficiency if BLDC were subtitute to PMSM. Where should i start? what kind of data that i need?
 
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sambbal said:
I want to do a study comparation of PMSM and BLDC Motor. I want to analyze the cost efficiency if BLDC were subtitute to PMSM. Where should i start? what kind of data that i need?
This sounds kind of meaningless without a careful definition of the application. Each of these motors is the best choice for something, yet they are not the same. I doubt you'll get much guidance here without a more detailed description of the constraints in your analysis.

So, the first step is to ask a good question, not of us, but for yourself. What do you need the motor to do? Why? What would a PMSM solution be? What would a BLDC solution look like? How do they compare?
 
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Due to the application, you can use different excitation model and magnet shapes to have BLDC or PMSM ( sinusoidal or trapezoidal back EMF)
I had a similar project and I used a simulation software to compare the output parameters and material usage. It was easy to use for me as an amateur. You may find it useful to test EMWorks studio or [Redacted by the Mentors]. No need to have deep knowledge in finite element to use them.
 
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There are some useful textbooks about PMSM machines, I used Dr.Hendershot book and videos to learn the basics of these machines.
 

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