Voltage Switching

[Aizat Jan]

Hello, I'm Aizat. I need your help about simulation of lab view without hardware. I have problems with my project. I want to use 3 DC voltages in my simulation. From the simulation, the higher voltage from that 3 DC voltages will be choosen as an output.

From there, the higher DC voltage will be convert to AC voltage by using inverter.

The problems are, how I want to create the simulation to choose the higher voltage and then how to convert (to AC voltage) it by using inveter?

Hopefully that you can understand my questions.

Thank you.

[MattBradley]

To choose the higher voltage, just use the build array to put all three together and then use the max/min function in the array palette to find the max voltage.

Sorry, can't help with the inverter.

[Aizat Jan]

Thank you so much. Your information is very usefull for me. Thanks again.

Anybody that can help me to give an information a simulation for inverter?

Regards,

Aizat Jan.

[RavensFan]

What do you mean by "simulating an inverter"?  An inverter is going to be an external electrical device.  Do you have a particular brand of inverter selected?  Are you doing anything besides sending a DC voltage such as communicating with it through a serial port?

Please provide more details of how you want to use LabVIEW at this stage of your project and what is your ultimate goal.

[Aizat Jan]

Sorry for being late to reply your message. I need to convert the DC voltage into AC voltage by using Lab View. I didn't have any particular brand of inveter selected. Then, I'm doing C++ for the progress of this overall operation.

By the way, anybody can help me to find how to make an inverter at the block diagram and how to use C++ programming in Lab View.

Hopefully, you can understand what I mean.

Regards,

Aizat Jan

[RavensFan]

There is no such thing as an "inverter at a block diagram for LabVIEW".

In order to convert DC voltage to AC, you need to have hardware.  You will need to find a brand of inverter that meets your specifications (voltages, currents, frequency, power) then find out how you want to control it or communicate with it.

I don't understand where C++ fits into what you are trying to do.  There are numerous other message threads discussing the use of C and C++ .dll's with LabVIEW you should search for.

[Aizat Jan]

Thank you for  your information. It's very helpfull.

I have another question to ask.

If I have one table, that contains data of three sources of voltage according to time.

Example at 0900 am, source A produces 7V. Source B, 12V and source C produces 15V.

For every 30 minutes the data will be taken.

The time is from 0900 am to 1700pm.

Can I use the data to put as a voltage source inside Lab View without any hardware?

I mean I put that table inside the Lab View and used as a input voltage.

This question is related to my previous question. (To choose the higher voltage input during at that time)

Hopefully that you can understand my question.

Regards,

Aizat Jan

[Aizat Jan]

Thank you for  your information. It's very helpfull.

I have another question to ask.

If I have one table, that contains data of three sources of voltage according to time.

Example at 0900 am, source A produces 7V. Source B, 12V and source C produces 15V.

For every 30 minutes the data will be taken.

The time is from 0900 am to 1700pm.

Can I use the data to put as a voltage source inside Lab View without any hardware?

I mean I put that table inside the Lab View and used as a input voltage.

This question is related to my previous question. (To choose the higher output voltage during at that time from three sources)

Hopefully that you can understand my question.

Regards,

Aizat Jan

[Dennis_Knutson]

Without any hardware, all that you have is numbers and yes, you can create a table of numbers, read the table whenever you want, and select the highest number. One way to select the highest number is to use the Build Array function and pass the array to the Array Max and Min function. You can call the numbers anything you want. It's just a label.

LabVIEW is not really an electronics simulator. Are perhaps confusing it with the NI product Multisim?

[Aizat Jan]

I not really understand with Lab View. I can do with a simple one simulation. That's all. Hahaha.

So I can put a table inside the Lab View. But how to do it? Can you show me?

Thank you for your help.

Regards.

Aizat Jan.