| Autor: |
Salih, Firas Abdul-Hadi, Hassan, Turki Kahawish |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3009 Issue 1, p1-10, 10p |
| Abstrakt: |
Modular multilevel DC/DC converter (MDCC) has become an increasingly important topology in medium-voltage (MV) and high-voltage (HV) applications. Hoverer one of the most serious problems in MDCC operation is the submodules (SMs) capacitor voltages balancing. If there is a wide range of capacitance tolerance of the SM capacitors that results inaccurate capacitor voltages balancing. To overcome this problem the A modified duty cycle modulation method proposed and discussed in this paper. the voltage balancing method using modified duty cycle modulation offers the merits: 1) stable voltage balancing over wide range of capacitance tolerance of each SM capacitor; 2) improvement in the time response of the system and reduction in output voltage overshoot during dynamic operation; 3) the sorting algorithm replaced with modified duty cycle modulation method for the SM capacitor voltages balancing which reduces the computation burden. The proposed method ensures an accurate voltage balancing, improves the time response of the system, and decreases the overshoot of the output voltage and SM capacitor voltages for dynamic response compared with prior art of MDCCs, where the stepped 2-level modulation is adopted. An analytical simulation of the MDCC is presented using MATLAB/SIMULINK to explain the operation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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