Columbia Technology Ventures

Scalable and modular multilevel power converters

This technology is a scalable power conversion system for AC/DC and DC/DC power transformations which used voltage balancing to minimize the number of components needed in the conversion cell.

Unmet Need: Simple and uncomplicated multilevel power converters

Multilevel power converters are useful devices to manipulate high voltage power in the grid while offering higher quality signal outputs; however, these systems are often quite complex in both their design and implementation. They often have complicated circuit topologies and unstable voltage balancing, which can lead to inefficiencies in the system causing power losses and instability. Additionally, the complex hardware required is often a limitation in the scale-up of these systems.

The Technology: Robust and voltage balanced multilevel power converters

This technology is a voltage balanced, multilevel power converter grid architecture topology with a simplified design that can easily and efficiently convert AC/DC and DC/DC power signals. The converter is made of individual cells, each of which is tuned and voltage balanced itself. This allows for the system to be easily scaled to as many converter cells as desired to handle the voltage of the system. There is no limit of cells which can be used in tis topology, making this a robust and efficient method for signal power conversion.

Applications:

  • Electric vehicle charging stations
  • Advanced power transmission lines
  • Converters for alternative energy devices (e.g., wind, solar, etc.)
  • High-voltage direct current (HVDC) transmission
  • Decentralized power grids
  • Power storage applications

Advantages:

  • Simplified cell-based multilevel converter design
  • Bidirectional conversion of power (AC/DC or DC/DC)
  • Easily and linearly scalable system
  • Self-sustained voltage balancing
  • Negates the use of complex converter circuit components

Lead Inventor:

Matthias Preindl, Ph.D.

Patent Information:

Patent Pending(WO/2022/187647)

Related Publications:

Tech Ventures Reference: