Technical FAQs 4

What are the charging currents of capacitors?

Charging currents of the capacitors: Charging current of capacitor C 1 (blue curve), charging current of capacitor C 2 with limiting inductor (red curve), and charging current of capacitor C 3 (brown curve). The maximum voltage stress on the proposed structure’s devices is detailed in Table 4.

What causes a capacitor to lose power during the charging process?

During the charging process, losses are mainly due to the voltage ripple of the capacitors. In this case, the capacitor voltage ripple causes the charging current to pass through the parasitic resistance of the charging loop.

How a switched capacitor multilevel inverter works?

In the proposed inverter, similar to other switched capacitor multilevel inverters, charging and discharging the capacitors periodically occurs. During the charging process, losses are mainly due to the voltage ripple of the capacitors.

Does a flying capacitor generate inrush current during charging?

Adding a series inductor with switch S q in the charging loop of this capacitor controls the inrush current. The inrush charging current of the flying capacitor C 3 in the proposed structure is practically negligible due to load impedance in its charging path. Consequently, this capacitor does not generate an inrush current during charging.

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Can the inverter high voltage capacitor be charged

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