BLDC model with simscape

36 次查看（过去 30 天）
Dimitrios Petridis
Dimitrios Petridis 2017-6-15
评论： Zhao Wang 2020-12-7
Hi all,
I recently started making a model for a BLDC motor, which is supplied by DC voltage, with simscape on R2013b. After some research I came up with the following model:
where the hallsensor output of the BLDC creats the EMF signals and then the gate signals
I got some values for the BLDC from a data sheet and entered them into the PMSM motor block. Everything seems to be working fine except the speed of the rotor. It somehow is way to high (at no load about 25000 rpm whereas I would expect about 4200 rpm). Is there anything I am missing? The current is alright as well as the voltage, so I assume there is issue with the PMSM motor block somehow, but as I have it from the powersystems toolbox I am not sure if there is something wrong with it. Or is something wrong with the logic table?
Thank you for your help in advance!
  3 个评论
显示 1更早的评论
rajab84
rajab84 2018-7-21
I am facing the similar problem, Could you please elaborate on changing the load on motor?
sandesh khadka
sandesh khadka 2020-12-6
can you please send me your slx file.
sandeshkhadka2016@gmail.com

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Monica S
Monica S 2019-1-13
编辑：Monica S 2019-1-13
From the model you shared I don't quite get the idea from where load torque and reference speed are taken from, anyway you can control the speed by tuning the PI controller (either by designing the controller or using trail & error method to tune the values).
There is a model of BLDC motor speed control in mathworks which you can use it as refernce, you can type "power_brushlessDCmotor" in command window.
Use a constant block to input speed reference value (say, give it as 4200 rpm for no load speed) Then test it...
Let me know if you need any help.
sandesh khadka
sandesh khadka 2020-12-6
  2 个评论
sandesh khadka
sandesh khadka 2020-12-6
what is this happening
Zhao Wang
Zhao Wang 2020-12-7
The signal dimension does not seem to match. Its dimension should be 3 but here it is only one. Please check the signal dimension that connects through the input port "hall".

请先登录，再进行评论。

社区

更多回答在  Power Electronics Control

类别

在 Help Center 和 File Exchange 中查找有关 Choose and Parameterize Blocks 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by