Timeline for How to set parameters of the PI controller inside the PLL?
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 1, 2021 at 12:00 | history | tweeted | twitter.com/StackSignals/status/1399697244589379586 | ||
| Jun 1, 2021 at 11:50 | answer | added | Ben | timeline score: 3 | |
| Jun 1, 2021 at 11:45 | comment | added | Ben | you should feed the q component to the PLL, not the "d" component. | |
| Jun 1, 2021 at 5:18 | comment | added | Steve | @Ben Yes, I did. Based on the root locus design $K_p=460\,\mathrm{Hz/V}$ but the actually used $K_p=\frac{460}{\sqrt{2}\cdot 220}=1.478\,\mathrm{Hz/V}$. | |
| Jun 1, 2021 at 1:55 | comment | added | Ben | Did you normalize the gain by dividing by the nominal voltage amplitude? | |
| May 31, 2021 at 19:10 | answer | added | Dan Boschen | timeline score: 5 | |
| May 31, 2021 at 15:05 | comment | added | Steve | Continuous time derivation: $K_p=1.478\,\mathrm{Hz/V}, T_i=0.0043\,\mathrm{s}, K_i=\frac{K_p}{T_i}=343.72\,\mathrm{Hz/V}$. Sampling time: $T=50\,\mu s$. Discrete time simulation: $K_p=1.478\,\mathrm{Hz/V}, K_i=\frac{K_p\cdot T}{2\cdot T_i}=0.0086\,\mathrm{Hz/V}$. | |
| May 31, 2021 at 13:49 | comment | added | Dan Boschen | What was the constant you came up with for $K_p$ from your continuous time derivation, and then what did you end up using in your discrete time simulation and what is your sampling rate? | |
| May 31, 2021 at 11:08 | comment | added | Steve | Do I understand correctly or did you mean something else by the integration scaling? | |
| May 31, 2021 at 6:19 | comment | added | Steve | @DanBoschen thank you for your reaction. As far as the integration gain I have been using this $K_i = \frac{K_p\cdot T}{2\cdot T_i}$, where $T$ is the sampling interval. | |
| May 31, 2021 at 2:32 | comment | added | Dan Boschen | I didn't have time to read through this all yet Steve but just wanted to check if you properly scaled your integration by T as the sampling interval? When this happens to me it is usually because of this. | |
| May 30, 2021 at 13:58 | history | asked | Steve | CC BY-SA 4.0 |