I can't post the code neither the schematics
When observing the output voltage im not able to get an exact 50hz signal. The signal produced contains additional 2 low frequency components at about 45 and 55 Hz however with smaller amplitudes
Hi,
Maybe it is a measurement problem:
* some kind of FFT window mismatch --> Try to use an additional FFT windowing function like hanning...
* Or it is an undersampling effect --> choose an other time base
Or it is a real signal problem.
* maybe caused by DC rail fluctuations --> check DC rail voltage with a scope
Klaus
Do you see significant jitter on either edge of the
controller output waveform(s)?
...presuming this is a
current mode controlled design?
Hi,
Check your pwm,
Either all rising edges, or all falling edges should have equal dustance.
(As long as you don't use symmetric pwm generation)
Best is to use a digital scope.
Klaus
Is this inverter performing some kind of loopback control ?
I'm guessing this could be happening due to a self oscillation.
&I didn't understand the part of the rising and falling edges. Can you clarify please?
As long as you don't use symmetric pwm generation
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