L6_2 - MULTILEVEL INVERTER The voltage source inverters...

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MULTILEVEL INVERTER The voltage source inverters produce an output voltage or a current with levels either 0 or ± V dc . They are known as the two-level inverter. In high-power and high-voltage applications, these two-level inverters however, have some limitations in operating at high frequency mainly due to switching losses and constraints of device ratings. The multilevel inverters present a new set of features that are well suited for use in reactive power compensation. It may be easier to produce a high-power, high-voltage inverter with the multilevel structure. Multilevel concept Each capacitor has the same voltage E m , which is given by 1 dc m V E m = where m denotes the number of levels. 9
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Type of multilevel inverters Diode-clamped multilevel inverter; Flying-capacitors multilevel inverter; Cascade multilevel inverter. Diode-clamped multilevel inverter The dc bus consists of four capacitors, C1, C2, C3 and C4.
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L6_2 - MULTILEVEL INVERTER The voltage source inverters...

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