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Among the various multilevel converter topologies used in medium and high voltage grid applications, the Modular Multilevel Converter (MMC) has been the most promising since it combines good harmonic performance with low switching frequency and high reliability. A major concern however for inverter designers has been the associated cost due to the need for a large number of power devices and capacitors...
A general analytical loss calculation method for cascaded H-bridge multilevel converter is proposed in the paper. Different from traditional averaged switching frequency approach, the loss difference between converter operating in capacitive mode and inductive mode will be reflected by the proposed method. The proposed method is generic and valid for different modulation methods covering phase-shifted...
This paper gives an analysis and design of a static synchronous compensator (STATCOM) using a hybrid multi-inverter system. The hybrid system consists of two GTO inverters and a single IGBT inverter connected in series by three transformers. The hybrid configuration STATCOM has the potential that the harmonic components of the output voltages/currents would be less than conventional configuration...
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