How to decide the sampling time in powegui block in discrete mode?

Question

Praveen Kumar 2018-7-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/412224-how-to-decide-the-sampling-time-in-powegui-block-in-discrete-mode

回答： Sabin 2023-1-13

For example, a model of DC-DC converter (boost), how to decide the sampling time in powergui block to run in discrete mode? I have checked different values of sampling time and it greatly effect the system results.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Sabin 2023-1-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/412224-how-to-decide-the-sampling-time-in-powegui-block-in-discrete-mode#answer_1148330

We choose the sample time depending on the system dynamics, check the Nyquist–Shannon sampling theorem. The sample time must be small enough to capture the transient. When we have electrical systems with switching devices we also need to consider the switching frequency and then we need to oversample the plant so we get enough samples for each switching period.