Hi Guys,
I am new in electronics field. I am a student of Electrical and i am assigned to build a Automatic voltage Regulator using Arduino... please help me i will be very thankful
Hi, welcome to the forum.
In one of my first tasks as a trainee I made something that was not what they wanted. All my effort was useless, because of the very poor description. It was a good program, and it made very nice subtitles to a video stream, but completely useless.
An "automatic voltage regulator" can be many different things in many different ways. Ask for a better description.
Is the Arduino needed to switch between fixed voltages ?
Does the Arduino have to implement a feedback, perhaps even with PID ?
Should the Arduino be able to program a sequence ?
Should someone be able to set the voltage from a computer ?
What is the voltage range ? Perhaps 0...5V, or 0...100V, or a mains voltage regulator with a variac ?
How must current is needed, perhaps 10mA for a sensor or 100A for a large motor ?
Hey: Peter_n,
Thanks for the reply. Initial requirments were stated below.
1- Input voltage range 125v to 270v
2- Output voltage range 140v to 270v
3- The output and input frequency should be same.
I know this is a simple reuirment and can be done on any other things like pic etc. but we need to do it specificly on arduino. Main purpose of arduino is to ensure voltage regulation goes smooth.
Just need heads up, i will try my best to accomplish the rest.
I am totally flabbergasted.
It is for piezo elements that need a few milliamps, or is a big industrial motor of many kWatt ?
When the input is 125V, should be output be able to go to 270V ?
What about the frequency ? What is the range ? How should be input frequency be measured.
Do you have all the electronics and a working circuit already ? And you need only the Arduino to control it ? Or do you have to design the whole circuit ?
I know this is a simple reuirment and can be done on any other things like pic etc. but we need to do it specificly on arduino.
Yes, the basic programming logic is very simple, but controlling/regulating AC power is NOT simple at all, especially if you need to maintain a sine wave. Maybe you have a motorized Variac?
And, we really can't help you without knowing what hardware/circuitry you are using to control the AC. Of course, the Arduino should be isolated from the high voltages.
An Arduino controlled transformer? Switch input to a step-up transformer through a FET and filter the HF ripple on the output? Use the Arduino to sense Vin and vary the duty cycle? You can soft-PWM a pin at 100KHz and still have time to sense and react at speed, there's your HF ripple.
DVDdoug:
Yes, the basic programming logic is very simple, but controlling/regulating AC power is NOT simple at all, especially if you need to maintain a sine wave. Maybe you have a motorized Variac?And, we really can't help you without knowing what hardware/circuitry you are using to control the AC. Of course, the Arduino should be isolated from the high voltages.
He needs a Variac. That's all.
And, a person who is just learning should NOT be anywhere near 270 volts (or even 220 or 110).
5 volts with an occasional 9 and 12 tossed in is ALL a person starting out should be dealing with.
OMG... 270 volts + no experience = death. Literally.
Peter_n:
Do you have all the electronics and a working circuit already ? And you need only the Arduino to control it ? Or do you have to design the whole circuit ?
Yes i need to design the whole circuit!
We have not enough information to give good advice, and it is dangerous.
Are you sure you want to continue this ?
Do you have a lot of help ? and does someone know what you should build ? Or can you ask for another assignment ?
If you have to build it with a team of 5 students, and one knows about safety with high voltages, and someone else is a software geek, then it is possible.