q- d- currents of PMSM drive in Delta configuration

1 次查看（过去 30 天）
Tom Lankhorst
Tom Lankhorst 2020-7-31
评论： Mohsen Aleenejad 2020-7-31
I measure the line-currents of a Delta-wired 3 phase PMSM (SimScape).
Then, I apply the Park transform to transform abc to dq0.
Now, the output of the Park transform is different from the d- and q- currents that I see in the SimScape result explorer.
When I switch to Wye-configuration. The values are as expected, but the torque is higher than what I would expect from torque = K_t * i_q.
Notice how the idq0Scope (after Park transform) gives different values. (d/q; 10/0 vs 5/-2.887A)
Can anyone explain this difference?
Current controller:

请先登录，再回答此问题。

采纳的回答

Mohsen Aleenejad
Mohsen Aleenejad 2020-7-31
Hi Tom,
Could you please tell me if these numbers are the exact values you observe? If not could you please provide the exact values?
Thank you
Mohsen
  5 个评论
显示 3更早的评论
Tom Lankhorst
Tom Lankhorst 2020-7-31
Thanks for your insight Mohsen.
I scaled the 'measured' current by 1/sqrt(3) then subtracted pi/6 from theta... and it works.
Only the output torque is exactly 1.5 times as high as I would expect from the torque constant.
Mohsen Aleenejad
Mohsen Aleenejad 2020-7-31
I'm happy that could help. Regarding the torque, if I recall correctly, there is a 2/3 constant in the equation, probabley the difference is coming from there and you need to consider it somewhere.

请先登录，再进行评论。

更多回答（0 个）

社区

更多回答在  Power Electronics Control

类别

在 Help Center 和 File Exchange 中查找有关 Permanent Magnet 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by