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RESEARCH PRODUCT
Modified Modulation Techniques for Quasi-Z-Source Cascaded H-Bridge Inverters
Frede BlaabjergRosario MiceliYongheng YangFabio ViolaGiuseppe Schettinosubject
Control and OptimizationComputer science020209 energyEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciNetwork topologyIndustrial and Manufacturing EngineeringModulation techniquePV systemsmodulation techniquesharmonicsquasi-z source cascaded h-bridge inverters0202 electrical engineering electronic engineering information engineeringElectronic engineeringRedundancy (engineering)Electrical and Electronic EngineeringQuasi-Z source cascaded H-Bridge inverter020208 electrical & electronic engineeringPhotovoltaic systemHarmonicH bridgeSettore ING-IND/31 - ElettrotecnicaModulationHarmonicsInverterPV systemVoltagedescription
Quasi-Z-source cascaded H-bridge (q Z S - C H B) inverters are one promising solution for high power photovoltaic (PV) systems. This type of topologies inherits the advantages of cascaded converters (i.e., multilevel outputs) and impedance-source inverters (i.e., high conversion ratios). In addition, it allows increasing the inverter reliability (with high redundancy). However, the modulation and control of qZS-CHB inverters are challenging to a certain extent. Thus, this paper proposes modified modulation techniques to increase the performances of qZS-CHB converters in terms of voltage gains and stresses. The novelty lies in the use of the switching frequency optimal as reference signals in the modulation techniques. A comparison in terms of harmonics with selected modulation techniques is performed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-10-01 |