6533b82bfe1ef96bd128d6e9

RESEARCH PRODUCT

Graphical THD minimization procedure for single phase five-level converters

Rosario MiceliCarlo CecatiMaria Gabriella CimoroniConcettina BuccellaGiuseppe SchettinoVincenzo Castiglia

subject

Graphycal Procedure; Grid Codes; Harmonics Mitigation; Multilevel Inverters; Total Harmonic Distortion (THD); Electrical and Electronic Engineering; Control and Systems EngineeringGraphycal ProcedureTotal harmonic distortionEngineeringbusiness.industryTotal Harmonic Distortion (THD)020208 electrical & electronic engineeringModulation indexGrid Codes02 engineering and technologyFundamental frequencyElectronic mailHarmonic analysisHarmonics MitigationMultilevel InvertersControl and Systems EngineeringControl theoryHarmonics0202 electrical engineering electronic engineering information engineeringHarmonicElectronic engineeringInverterElectrical and Electronic Engineeringbusiness

description

This paper proposes two graphycal procedure to mitigate h harmonics and to minimize the total harmonic distortion (THD), respectively. The paper considers a five-level inverter and fundamental frequency modulation: it computes the two switching angles able to reduce low order harmonics and able to minimize the THD. Simulation results are obtained and, in order to validate the proposed procedure, an experimental prototype is built and experimental results are carried out. The comparison between simulation and experimental results confirms the accuracy of the proposed graphycal procedure. It is shown that the switching angles to mitigate the third-fifth and the third-fifth-seventh harmonics exist only for few values of modulation index. The angles obtained by the THD minimization procedure and the corrensponding values of the amplitudes of the harmonic components are shown to verify the respect of grid code.

yearjournalcountryeditionlanguage
2017-06-012017 IEEE 26th International Symposium on Industrial Electronics (ISIE)
https://doi.org/10.1109/isie.2017.8001337