Step -wave converter

Discussion in 'General Electronics Chat' started by asimraufawan, Jan 30, 2009.

  1. asimraufawan

    Thread Starter Member

    Jul 4, 2008
    Hi everyone,

    I m working on an inverter design using a H-bridge configuration
    to create a step-wave curve.
    The voltage step is range (10,0,-10).
    Four H-bridges are a=3,0,-3
    If there is a sine wave of 360 angle how it will be steped using the above configuration i want to develop a table which will show all 256 steps 128 on positive side & 128 on negative side with respect to all four H-bridges.

    Now out of 256 combination one angle is equal to x=(1.41degree)min
    y=A Sine(x).
    y will be the amplitude for each step there will be 256 steps
    Now how will i know let suppose y=3.566 it is a total of all four bridges at certain degree what is the value at a,b,c&d & sum ups 3.566

    Kindly help me out
  2. Audioguru

    AAC Fanatic!

    Dec 20, 2007
    If an inverter used voltage steps then its Mosfets would dissipate too much heat.
    High frequency Pulse-Width-Modulation is usually used instead where the Mosfets switch on on completely then switch off completely so they don't waste power getting hot.