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This paper presents a control scheme that utilizes energy storage of the Modular Multilevel Converter (MMC) for Power Oscillation Damping (POD) service. Such a service is used to enhance grid stability by providing damping power in the electromechanical (0.2–2Hz) dynamics range. The scheme uses compensated modulation with average energy control. The aforementioned service comes at the cost of additional...
The Modular Multilevel Converter (MMC), being a complex system, requires a number of controllers to function properly. These range from low level switching pattern generation to high level control loops. Among these controllers are modulation techniques that calculate the insertion indices, control inputs that decide the number of sub-modules inserted in a given arm. One such technique is compensated...
The Multi-terminal DC grid is expected to be built incrementally by interconnecting existing HVDC installations. In doing so, an enabling component is the DC-DC converter which also plays the role of a power flow controller. A number of DC-DC converter topologies, targeting different applications, have been proposed in literature. However, detailed simulation models for system level studies are not...
With the increase in the power rating of offshore wind turbines power electronics solutions based on multiple power conversion lines operating in parallel are getting increasing attention. This paper focuses on the parallelization of Medium Voltage (MV) generator side converters for Permanent Magnet Synchronous Generators (PMSG) and on their differences from the Low Voltage (LV) counterparts, which...
The Modular Multilevel Converter (MMC) is an emerging topology which is being used over a range of applications. There are a number of attractive features of the converter compared to other converter topologies currently available. But, the charge balance in the floating capacitor is achieved at fundamental frequency. This is a challenge if the converter is to be used in low frequency application...
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