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A Control Method for Voltage Balancing in Modular Multilevel Converters

IEEE Transactions on Power Electronics, 2014
The modular multilevel converter (MMC) is attractive for medium- or high-power applications because of the advantages of its high modularity, availability, and high power quality. The voltage balancing of the floating capacitors in the cascaded submodules of the MMC is a key issue. In this paper, a voltage-balancing control method is proposed.
Fujin Deng, Zhe Chen
exaly   +3 more sources

MMC Capacitor Voltage Decoupling and Balancing Controls

IEEE Transactions on Power Delivery, 2015
A Modular Multilevel Converter (MMC) control system based on converter energy storage is proposed in this paper for two different control modes: active power and dc voltage. The proposed control system decouples the sub-module (SM) capacitor voltages from the dc bus voltage. One of the practical applications is the management of active redundant SMs. A
Hani Saad   +4 more
openaire   +3 more sources

Power Balance for Voltage-controlled PV Generator without Robust Voltage Source

2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), 2019
Voltage control mode is preferable because of better bus voltage support and low reliance on communication. However, that is difficult to implement on photovoltaic inverter without robust voltage source. Meanwhile, photovoltaic arrays have some power management ability that usually neglected due to the use of MPPT, which in fact damages balanced power ...
Wang Zhenxiong   +6 more
openaire   +1 more source

Capacitor voltage balancing control for series MMC tap

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
The series HVDC tap based on modular multilevel converter (MMC) has been proposed to provide power supply for rural places. However, most of current capacitor voltage balancing control strategies are not suitable for series MMC tap. In this paper, the principle of power transfer between phases, arms and sub-modules (SMs) in a series MMC are analyzed. A
Zigao Xu   +3 more
openaire   +1 more source

DC Capacitor Voltage Balancing Control for Cascaded STATCOM

Applied Mechanics and Materials, 2013
Through the DC side capacitor voltage unbalance problem of cascaded static synchronous compensator. Put through a theory of active voltage average distribution to balance DC capacitor voltage, using master slave controller to realize controlling requirements.
Sheng Qing Li   +3 more
openaire   +1 more source

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