In electric vehicle applications, the DC link capacitor is used as a load-balancing energy storage device. The DC link capacitor is placed between the DC (in this case, the battery) and the AC (which is the load side) of the voltage inverter. The capacitor is placed parallel to the battery, which maintains a solid voltage across the inverter.
We may infer from Figure 2 that the DC link capacitor's AC ripple current Icap arises from two main contributors: (1) the incoming current from the energy source and (2) the current drawn by the inverter. Capacitors cannot pass DC current; thus, DC current only flows from the source to the inverter, bypassing the capacitor.
Small-capacity inverter systems are beneficial for applications such fans, pumps, and compressors, where the load variation is not significant. Two control methods were as fans, pumps, and compressors, where the load variation is not significant. Two control methods applied to solve the problem caused by small capacitance values.
Small-capacity inverter systems are beneficial for applications such as were replaced by film capacitors. Small-capacity inverter systems are beneficial for applications such fans, pumps, and compressors, where the load variation is not significant.
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