How to linearize a switching model of buck-boost converter?

21次意见(过去30天)
惩罚
惩罚 on 8 Mar 2016
Commented: Arkadeep Debon 10 Jun 2021
I have a buck-boost converter (switching model) and I want to linearize my converter around some steady state operating condition. I know how to get analytically derive the transfer function of the model but I want to verify my transfer function (or characteristics) with what I get from linearization function. I know PLECS has perturbation and response small signal blocks and then you can do impulse response to get bode plots. How to get the linearized model of my converter and thus obtain any kind of plots like bode? I am attaching the switching and average model of my buck-boost converter. Any help and clues are much appreciated.
谢谢puneet.

答案(2)

rakesh chavan.
rakesh chavan. on 14 Mar 2016
Hi,
You can use the Linear Analysis tool for linearizing your model. Some examples and documentation for the same can be found at the following link: //www.tatmou.com/discovery/linearization.html
You can set the operating points as needed as well as observe the responses in terms of Bode plots. You may also want to look at the following link for Frequency Response Estimation Using Simulation-Based Techniques: //www.tatmou.com/help/slcontrol/examples/frequency-response-estimation-using-simulation-based-techniques.html
希望这可以帮助。
-
Regards
Rakesh
2 Comments
Rushi Jariwala
Rushi Jariwala 2017年12月25日
嗨puneet。您能分享您对平均模型的频率响应估计的方式吗?它与第2链路中描述的相同吗?

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Sathish看到
Sathish看到 2019年1月29日
嗨,我还在寻找开关模型的线性化。我的模型中有AC供应,输入过滤器,维也纳整流器(PFC校正)和DC-DC谐振转换器。派生传递函数FOT这整个模型看起来很复杂。如果有人可以帮助我如何直接从Simscape模型中派生传输函数。我将为每个模型推导传输函数,最后结合模型。
提前致谢
1 Comment
Arkadeep Deb
Arkadeep Deb on 10 Jun 2021
Hello, did you manage to solve the problem? I am having the same problem as mentioned above. Can you please help me?

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