Theoretical Analysis of a Five-Level Voltage Source Modular Inverter for Renewable Energy Applications

P.A. Grain, A.-L. Olimpo, and B. Graeme (UK)


Cascaded multilevel inverter, diode clamped inverter, modular inverter and sinusoidal pulse width modulation. 1.


The principle of operation, theoretical basis of pulse width modulation and capacitors voltage balancing method of a five-level modular inverter are presented. Several load scenarios are considered such as operation with different modulation indices, load power factors, imbalance load, symmetrical and asymmetrical faults. In addition, a scenario with utility interface of storage system is considered. Computer simulations in Matlab Simulink environment are used to validate the operation of the inverter.

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