I want to design this given circuit diagram in LT spice. I dont know how to

Thread Starter

ostrich890

Joined Sep 29, 2024
3
I have never designed circuits on LT Spice and I have to design this given circuit for an MPPT algorithm testing system.
1730962031033.png
1730962061226.png

can someone help me out with this, please? Please attach the file if possible. thank you in advance.
 

Alec_t

Joined Sep 17, 2013
15,112
Welcome to AAC!
You will need compatible Spice models of all the circuit components.
An Arduino model might be difficult to source (I haven't checked).
Check the LTS Help and Examples for starters. There are many LTS tutorials on Youtube.
 

Papabravo

Joined Feb 24, 2006
22,073
AS far as I know LTspice does not have the ability to simulate a microprocessor directly. However, those functions can possibly be modeled by a collection of simpler components. The next problem is that your schematic is incomplete and has no part numbers for the diodes and MOSFETs. Lastly there are no values for R1/C1 and R2/C2. In order to be able to simulate something you have a job of work to do. In other words, you need to have a complete design.
 

Papabravo

Joined Feb 24, 2006
22,073
I have to simulate the current, voltage and Power
Great! So
  1. How are you going to pick the models you need to use for the diodes and the MOSFETs?
  2. How are you going to model the Arduino?
Maybe give your schematic to ChatGPT and ask it to pick the components, then all you have to do is find a way to create the Arduino behavior.
 

MrAl

Joined Jun 17, 2014
13,686
I have never designed circuits on LT Spice and I have to design this given circuit for an MPPT algorithm testing system.
View attachment 335274
View attachment 335275

can someone help me out with this, please? Please attach the file if possible. thank you in advance.
Hi,

Just to note on your way to the complete solution, are you sure the PV Emulator part is drawn correctly?
I ask because I would have expected to see a source Idc not Vdc driving the diodes D1 through Dn.
With Vdc, the diodes do nothing. With Idc, the insolation level is emulated by changing the current that Idc puts out. The diodes then help to make the whole thing look like a solar array.
You can do it with Vdc, but it's not as good an emulation of a solar panel.
If the instructor wants it that way you may have to do it that way anyway though.
 
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