High-power voltage-source converter topologies, modeling, and analysis framework for future AC-DC supergrids

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The development of sustainable energy from renewable resources such as wind, solar, tidal, and biomass energy has been identified as a key strategic area in Canada. The large-scale integration of renewable energy sources into power grids has been challenging due to the often remote locations of the renewables and high fluctuations in energy production. Voltage-source-converter (VSC) high voltage DC (HVDC) transmission is the key enabling technology for the integration of renewables into power grids due to its efficient energy transmission and excellent energy flow control. However, for the VSC HVDC transmission to have broader applications, research is critically required to overcome current technological barriers to improve transmission efficiency, reduce converter costs, and increase the transmission fault-resilience.