METHOD FOR CONTROLLING A MULTILEVEL INVERTER WITH A SPLIT DC LINK

To improve voltage balancing at the DC link capacitor voltages of a multi-level inverter with a split DC link a modulation signal (MS) with a modulation signal amplitude (AMS) as even harmonic signal of the output voltage (uAC) or output current (iAC) of the inverter (1) is calculated from an actual...

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Bibliographic Details
Main Authors ROTHBOECK, Michael, PIELER, Roland, GRASBÖCK, Richard, KREUZER, Harald
Format Patent
LanguageEnglish
French
German
Published 18.10.2023
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:To improve voltage balancing at the DC link capacitor voltages of a multi-level inverter with a split DC link a modulation signal (MS) with a modulation signal amplitude (AMS) as even harmonic signal of the output voltage (uAC) or output current (iAC) of the inverter (1) is calculated from an actual electric power difference (Pdiff,act) of the actual electric powers at the DC link capacitors (CDC1, CDC2) and is superimposed onto the setpoint value (SP) for setting an output voltage (uAC) or output current (iAC) of the inverter (1).
Bibliography:Application Number: EP20210718892