Hi guys,
here was a simple way of getting a pwm with varying pulse width
http://forum.allaboutcircuits.com/showthread.php?t=49467
now I have read from somewhere that trilevel pwm is better than bilevel
though I dont quiet understand how the switching "sequence" is done.based on the attached diagram, how is the positive half cycle switched? is it like A=PULSES and C=just a POSITIVE of the sine reference? and on the negative cycle, B=PULSES and D just a POSITIVE(negative cycle) of the sine ref?
pls note that the fullbridge is single supply only.
thanks
here was a simple way of getting a pwm with varying pulse width
http://forum.allaboutcircuits.com/showthread.php?t=49467
now I have read from somewhere that trilevel pwm is better than bilevel
though I dont quiet understand how the switching "sequence" is done.based on the attached diagram, how is the positive half cycle switched? is it like A=PULSES and C=just a POSITIVE of the sine reference? and on the negative cycle, B=PULSES and D just a POSITIVE(negative cycle) of the sine ref?
pls note that the fullbridge is single supply only.
thanks
Attachments
-
45.9 KB Views: 43