+ Post New Thread
Results 1 to 5 of 5
  1. #1
    Advanced Member level 2
    Points: 6,050, Level: 18

    Join Date
    Oct 2001
    Posts
    618
    Helped
    8 / 8
    Points
    6,050
    Level
    18

    center aligned pwm

    What are the advantages or disadvantages of the two method? Where do their usage differ?

    •   AltAdvertisment

        
       

  2. #2
    Member level 4
    Points: 2,187, Level: 10

    Join Date
    Nov 2004
    Posts
    69
    Helped
    2 / 2
    Points
    2,187
    Level
    10

    edge-aligned

    Describe your application and environment.
    Generally, edge detection is simpler to
    implement in hardware; offsets rely on
    much tighter timing controls.
    <als>



    •   AltAdvertisment

        
       

  3. #3
    Advanced Member level 2
    Points: 6,050, Level: 18

    Join Date
    Oct 2001
    Posts
    618
    Helped
    8 / 8
    Points
    6,050
    Level
    18

    centre aligned pwm

    Nowadays 3 ph motor control. But i also want to hear other application areas.



    •   AltAdvertisment

        
       

  4. #4
    Newbie level 4
    Points: 1,462, Level: 8

    Join Date
    Mar 2005
    Posts
    5
    Helped
    1 / 1
    Points
    1,462
    Level
    8

    edge aligned

    Not sure if
    Center-Aligned PWM = Symmetric PWM
    Edge-Aligned PWM = Asymmetric PWM

    If they're similar, then it has been shown that symmetric PWM signals generate fewer harmonics in the output currents and voltages.

    http://focus.ti.com/lit/an/spra278/spra278.pdf


    1 members found this post helpful.

  5. #5
    Member level 5
    Points: 1,736, Level: 9
    veiledcavalier's Avatar
    Join Date
    Feb 2006
    Location
    Alexandria-EGYPT
    Posts
    92
    Helped
    7 / 7
    Points
    1,736
    Level
    9

    advantages of center aligned pwm signal

    hello,
    here are 2 docs, i think they will help u to understand Center Aligned PWM.


    1 members found this post helpful.

--[[ ]]--