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The voltage looks like a clean sine waveform, the current doesn't.Yellow - output voltage on the load;
Blue - output current on the load;
You ignored the circuit details given by dgs117. As far as I understand, there's no "shoot-through" or cross-conduction problemAny way you switch this H-bridge you are getting shoot through at the zero crossing.
Hi,dgs117 said:Indeed the IGBT switching losses are minimal.
Now I am experimenting with different LC filter configurations, trying different iron powder cores, different number of turns, different capacitor values.
So far I found out that the losses mainly depend on the size of the core and number of turns (value of L).
Can you direct me towards right literature I could study for my design process?
qtron said:Hi,dgs117 said:Indeed the IGBT switching losses are minimal.
Now I am experimenting with different LC filter configurations, trying different iron powder cores, different number of turns, different capacitor values.
So far I found out that the losses mainly depend on the size of the core and number of turns (value of L).
Can you direct me towards right literature I could study for my design process?
just joined this forum. How did you go with your sine wave filter? What self-resonant freq's observed? Can your filter be used with an inverter (1.1kW) at 400 Hz output?
Also, with "carrier" (modulation) freq of 15kHz?
Are you intending to feed filtered energy back to the DC Link?
Cheers,
Qtron.
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