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Dynamical Behaviour of CMI based STATCOM
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Cascade multilevel inverters (CMI) are superior to other multilevel inverter configurations in STATCOM applications owing to their distinguishing features, such as structural flexibility and control design feasibility in the service of lower device losses and high value of AC output voltage waveform quality. Voltage output stabilization and power factor correction at the point of common connection are two challenging difficulties that might lead to the system’s dominance. In this work, the overall control architecture for the system is presented, provides information on how the 9-level CMI may be utilised as STATCOM to carry out dc link voltage balancing and reactive power compensation. The superiority of the system under varying loads and fault circumstances has been confirmed by computer modelling.
Keywords
Point of Common Coupling (PCC); Cascade Multilevel Inverter (CMI); Line Ground (LG) Fault
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