How is ripple created? 1. The inverter converts DC voltage into an AC voltage.
2. The load connected to the inverter creates an AC current in the inverter.
3. This AC current causes (via the inverter) a fluctuating DC current on the battery.
4. The result of this fluctuating DC current is the following • When the DC current peaks the battery voltage will drop. • When the DC current drops the battery voltage recovers • When the DC current peaks the battery voltage will drop again • And so on.
The DC voltage will keep going up and down and is not constant anymore. It now is fluctuating. It will go up and down 100 times per second (100Hz). The amount the DC voltage fluctuation is called ripple voltage.
Normal DC looks like this:
DC voltage with ripple looks like this:
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