This project aims at developing a new architecture(s) that is based on the so-called Multi-functional Modular Multilevel Converter (M3C) and that enables direct power transmission from any particular source to any particular load with a reduced number of power converters. The concept is based on using different transmission frequencies in the same network. It enables the series connection of devices and can provide simultaneous functions such as power point tracking, individual load sharing and charge equalisation. It offers the following features:

  • Modular: All M3C modules are identical and can be programmed to act as
  • Potentially fast dynamic control, but complex dynamic behaviour
  • Can be used to interconnect with almost any low frequency AC or DC component

It solves the problem of uncontrolled power flow in networks and inherently improves stability.

The project has 4 main research questions that are addressed by 4 research teams:

  • What is the best architecture for the M3C and what is the best distributed filtering approach
  • Find the best way to control the distributed M3C converters in a network
  • How to avoid generation of EM noise arising from, amongst other, switching in series connected building blocks of the architecture.
  • Find out the impact on individual load sharing, charge control and stability of the grid for the presence of different frequency currents in the grid and come up with best control algorithm to co-ordinate the converters to minimise the effect of different frequency currents.

Building a scaled proof-of-concept system is part of the project.