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Capacitor voltage balancing control of multilevel DC-DC converter
2013 Brazilian Power Electronics Conference, 2013This paper presents an complete investigation of an active capacitor voltage balancing strategy for multilevel dc-dc converter. The proposed technique may be applied to various dc-dc converters, such as the well-known flying-capacitor converter. The voltage balancing analysis is carried out for a five level dc-dc converter, in which the small-signal ...
Levy F. Costa, Samir A. Mussa, Ivo Barbi
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Capacitor Voltage Balancing control for 3LNPC LLC Resonant Converter
2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 2019This paper concentrates on the capacitor voltage balancing in three-level neutral-point clamped (3LNPC) LLC resonant converter. Considering that the voltage stress applied to the power switch may exceed the rated voltage when a capacitor voltage imbalance occurs, a new control strategy is proposed to solve this problem.
Yu Qi +6 more
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DC capacitor voltage balancing control of cascaded static synchronous compensator
IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014Based on active power voltage vector addition, a new simple and clear algorithm is presented in this article to solve the existed phenomenon of the imbalance problem of the DC capacitor voltage of cascaded static synchronous compensator. The strategy has clear physical meaning and simple algorithm and it's easy to implement.
Yao Gang +4 more
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Control strategy for balancing capacitor voltage of modular multilevel converter
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014The Modular Multilevel Converter (MMC), based on cascaded multi-module structure, is suitable for highvoltage/power applications. However, among hundreds of modules, their voltage-balancing is a key problem which is attracting scholars' much attention.
Shang Ma, Yi Wang, Jinli Lv, Guolong Yu
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Current and capacitor-voltage balancing controls of three-level buck converter
2023 Research, Invention, and Innovation Congress: Innovative Electricals and Electronics (RI2C), 2023This paper presents a control method for the three-level buck converter. The primary objective of this study is to control the inductor current to satisfy the requirements for tracking and regulation. Additionally, considering non-ideal components and the switching command signal, which includes switch drivers, it is possible for the voltage across ...
Udomkaew, Srimongkhon +5 more
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Control of Hybrid Modular Multilevel Converter and its Capacitor Voltage Balancing
2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 2020Hybrid Modular Multilevel Converter (HMMC) is a hybrid converter combined by Modular Multilevel Converter (MMC) and classic three-level PWM voltage source converter (VSC). Using extra IGBT stacks, HMMC generates a midpoint manually, which can reduce maximum arm voltage stress.
Jian Liu, Dong Dong, Di Zhang
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Cell Capacitor Voltage Switching-Cycle Balancing Control for Modular Multilevel Converters
IEEE Transactions on Power Electronics, 2022Modular multilevel converters (MMC) with the conventional control are subjected to large capacitor voltage ripples, especially at low-line-frequencies. The existing attenuation approaches such as the second order or high-frequency harmonic injections are designed based on average models limiting the achievable performance.
Boran Fan +6 more
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Capacitor voltage balancing control of a flying capacitor based n-level DC-DC converter
2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe), 2015A flying capacitor based n-level non-isolated DC-DC converter is researched in this paper. The converter features reduced flying capacitors, compact structure, adjustable output voltage and high-voltage high-power ability. Basic operating principle was analyzed and a mean value model is derived.
Boran Fan +4 more
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Capacitor Voltage Balancing Control Strategy for Converters in 500kV Sunan UPFC
2018 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2), 2018The series and shunt converters of 500 kV Sunan Unified Power Flow Controller (UPFC) substation adopt modular multilevel converter (MMC) structure, but the inaccurate sampling of bridge arm current in low power mode will affect the sub-module capacitor voltage balancing.
Deng Kai +4 more
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Capacitor voltage balancing of hybrid converter based on nearest level control
2015 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2015], 2015Hybrid converter is recently introduced converter topology for high voltage applications. The converter comprises combination of director switches and a wave-shaping circuit assembled with capacitors. Director switch is made of cascaded IGBTs and waveshaping circuit consisting stack of H-bridge cells. This paper presents Nearest level control technique
M. S. Bhise, K. Vadirajacharya
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