The Switched Modular Multilevel Converter (SMMC) addresses the limitations of traditional high voltage direct current (HVDC) transmission systems by enhancing efficiency and reducing costs. This new topology increases the output voltage levels using the same number of capacitors but adds a switch matrix for better performance. The SMMC's innovative design minimizes the footprint, decreases the number of required submodules, and reduces harmonic content, making it suitable for HVDC, FACTS, and medium to high-power drives. The invention significantly cuts down on the space and investment needed for capacitors while maintaining reliability and scalability.
Figure (1) Switched Modular Multilevel Converter (SMMC); (2) Experimental setup of Switched Modular Multilevel Converter (SMMC)
The problem being addressed is the inefficiency and high costs associated with high voltage direct current (HVDC) transmission systems. Existing voltage source multilevel converters, such as diode clamped, cascaded H-bridge, and flying capacitor converters, have significant disadvantages when increasing the number of output levels. These disadvantages include increased submodule requirements, higher costs, larger footprints, and substantial space and investment needed for capacitors.
- Reduced Harmonic Content: The harmonic content of the output will be significantly lower, ensuring smoother and more efficient power delivery.
- Decreased Footprint: The footprint of the converter can be reduced, making it more compact and easier to integrate into existing systems.
- Scalability: The proposed topology maintains scalability, allowing for easy adaptation to different voltage levels.
- Enhanced Reliability: The new structure enhances reliability, providing robust performance in various applications.
- Simple and Modular Construction: The modular construction simplifies assembly and maintenance, making it cost-effective and user-friendly.
- Low Switching Losses: The topology features low switching losses, increasing overall system efficiency and reducing operational costs.
- Fault Tolerant Capability: The system has fault-tolerant capability, ensuring continuous operation and minimizing downtime in case of faults.
The patent itself focuses on the theoretical and functional details necessary for its claims, rather than a specific prototype implementation.
A Hardware prototype has been developed, and all the simulations and hardware studies have been successfully performed.
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Enhanced efficiency and reliability in high voltage power transmission systems (HVDs). Reduced footprint and cost of power converters, making them more accessible. Lower harmonic content in the output, leading to improved power quality. Contribution to advancements in renewable energy integration.
High Voltage Direct Current (HVDC) transmission systems, High/medium power drives, Flexible Alternating Current Transmission Systems (FACTS), Power Electronics, Renewable Energy
Geography of IP
Type of IP
201821005628
416758