Question about wave stability of a Multi-Level H-bridge Inverter

AI Thread Summary
The discussion focuses on the relationship between load and waveform stability in Multi-Level H-Bridge Inverters. The researcher observes that increasing the load results in a cleaner output waveform, contrary to the expectation that current should decrease according to Ohm's law. There is confusion regarding the principles governing this phenomenon, prompting requests for clarification on the output waveform type and noise characteristics. Participants suggest that understanding the specific waveform and its noise patterns is essential for addressing the researcher's question. The conversation highlights the complexities of inverter behavior under varying load conditions.
EverGreen1231
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I'm doing research with my professor on H-Bridge Power Inverters, I noticed that the more load we put on the device the better the wave looked (by better I mean cleaner, not as much noise). By ohm's law the current should be falling; would this not happen only if the current were rising?

I know there is a very basic principle that is the cause of this, but after spending several hours working it through I can't seem to remember what it is.

Much obliged...
 
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I'm not sure I understand your question. I would expect by Ohm's law that when your put a heavier load on a circuit, the current would increase. Can you explain your reasoning of why it should decrease?

Can you describe the output waveform of your inverter? Is it PWM, stepped sinewave, sinewave or what? Where does the noise appear, at step transitions? A photo of an oscilloscope screen would help?
 
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