Pv connected with battery need a variable resistor but i have constant voltage and a changing current from the pv and battery

5 次查看（过去 30 天）
Peter Lyngbye
Peter Lyngbye 2022-11-4
回答： Joel Van Sickel 2022-11-7
Hello,i have a pv panel connected with an mppt Block and a sepia converter to generate a constant voltage with varying current depending on the irradiance… though I have a problem, because of ohms law I need to vary my load resistance in order to get a higher current when the irradiance increase… but how can I do this? I know there is a variable resistor blovk, but how do I control the resistance so my current will change when the irradiance increase :/ best regards!

请先登录，再回答此问题。

回答（1 个）

Joel Van Sickel
Joel Van Sickel 2022-11-7
Hello Peter,
I'm not sure you should be controlling the resistance. In general, a solar panel and converter have no control over the load they are supplying, which is why MPPT is necessary to do with a dc/dc converter. The dc/dc converter can output a higher voltage to drive more current, which allows for control of power. MathWorks uses primarily boost converters for it's MPPT examples, but here is an example of a SEPIC. https://www.youtube.com/watch?v=mD-jUTDpVDg
You can achieve MPPT without varying your load resistance. However, if you want to calculate your resistance, it is P = IV, and V = IR. In your case, if V is fixed, and P comes from your MPPT algorithm, you can solve for R.
Regards,
Joel

类别

在 Help Center 和 File Exchange 中查找有关 Solar Power 的更多信息

标签

产品


版本

R2022b

Community Treasure Hunt

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

Start Hunting!

Translated by