Single Phase Digital Energy Meter

Discussion in 'The Projects Forum' started by cRash1001, Jan 12, 2016.

  1. cRash1001

    Thread Starter New Member

    Dec 22, 2015
    15
    0
    I am starting a project for single phase energy meter reading. Can you guys suggest some micro-controller for this project? I am currently studying MSP430AFE2xx from texas instrument, any pointers for this IC? And also for reading the current CT is used which is inductive and current will lag the voltage. The voltage is read using a voltage divider circuit, so if any of you guys know how to fix this using either hardware or firmware?
     
  2. crutschow

    Expert

    Mar 14, 2008
    12,995
    3,229
    The CT (magnetizing) inductance does not generate a significant phase difference between the load current and the voltage, as is true for any transformer.
     
  3. dannyf

    Well-Known Member

    Sep 13, 2015
    1,779
    360
    The choice of mcu is a minor one here. What matters here is the afe.

    Look up at analog's website as those guys are the leaders there.
     
  4. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,523
    1,247
    Analog Devices and Maxim compete in the electronic watt-hour meter market. Even if you do not want to use one of their all-in-one chips, the internal diagrams and app notes are an excellent way of learning how the big boys do it.

    ak
     
  5. cRash1001

    Thread Starter New Member

    Dec 22, 2015
    15
    0
    Ok So after studying some ADC's of texas, maxim, analog I found them to be some what hard to understand. I wanted to use ADE7753 but I dont have necessary equipment for testing and calculating the values of variables needed for calculation. So, if anyone has done this project for single phase energy meter suggest me a good ADC for meter reading
     
  6. RRITESH KAKKAR

    Senior Member

    Jun 29, 2010
    2,831
    89
    I don't understand how digital meter count energy and there is led blink on it.
     
  7. cRash1001

    Thread Starter New Member

    Dec 22, 2015
    15
    0
    A digital Energy Meter steps down the mains and measures the instantaneous values of current and voltages simultaneous through ADC. It samples those readings averages them and calculates the energy consumed in KWh. The led blink is just an indicator. eg: 1000 imp/KWh on an energy meter means the led blinks 1000 times for every KWh energy consumed.
     
  8. JohnInTX

    Moderator

    Jun 26, 2012
    2,341
    1,024
    This thread is not about your meter Rritesh.
     
  9. JohnInTX

    Moderator

    Jun 26, 2012
    2,341
    1,024
    Take a look at microchip.com They are very aggressive in the energy meter arena and have apnotes, cheap development boards etc. You can download the manuals/schematics/code for free. Good info even if you are not using a PIC.
     
  10. cRash1001

    Thread Starter New Member

    Dec 22, 2015
    15
    0
    I think I am going to be using MSP430F6736IPN from texas instruments or ATM90E26-YU-R from atmel or CS5490-ISZ from cirrus logic. These are not the best ICs but will do for some R&D. Analog Devices has some great AFE such as ADE7953 and ADE7753 but the firmware programming is a lot complicated.
     
Loading...