This invention introduces a Modular Multilevel Converter (MMC) designed for medium power applications. The MMC consists of a specific number of modules per phase, where each module includes two switches. These modules are interconnected to a shared dc-link, facilitating connection to one or more dc sources. Additionally, each phase of the MMC incorporates at least one coupled inductor to link the modules to the converter's output terminal. This configuration enhances voltage waveform resolution and reduces harmonic distortion, making the MMC suitable for diverse applications requiring precise voltage control and operational reliability in medium power application.
Type of IP
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Category of Patent
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- Energy Efficiency: By reducing voltage and current distortions and optimizing system performance, MMCs contribute to energy conservation and reduced electricity consumption.
- Grid Stability: Improved power quality indices ensure stable and reliable electricity supply, benefiting industries, residential areas, and essential services dependent on uninterrupted power.
- Environmental Benefits: Lower switching frequencies and reduced losses enhance overall energy efficiency, indirectly contributing to lower carbon emissions.
- Various Applications such as Electric Vehicle Charging, Renewable Energy Integration, and Industrial Drives for variable speed control.
- Modularity: MMCs are structured with multiple modules per phase, each comprising pairs of switches connected to a common dc-link. Voltage Levels: They generate multilevel voltage outputs using parallel-connected modules, reducing harmonic content and enhancing grid compatibility.
- Coupled Inductors: Each phase integrates coupled inductors to mitigate out-of-phase harmonic components and ensure smooth output voltage.
- Fault Tolerance: Capable of operating with disabled modules without significant impact on overall performance, ensuring robustness in varying operational conditions.
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- A prototype has been developed and validated in lab environment.
- The MMC produced the rated output voltage even after disabling faulty modules.
Electrical and Power Electronics Converter Manufacturing, Power, Energy, Renewable Energy
- Renewable Energy Integration: MMCs are used in grid-connected solar and wind power systems for efficient power conversion and grid synchronization.
- Electric Vehicle Charging: MMCs facilitate fast and efficient charging stations for electric vehicles, supporting high-power DC charging.
- Industrial Drives: Applied in industrial motor drives for variable speed control and energy efficiency improvements.