Competitive Advantages
- Significantly enhances stability in weak grids and increases power delivery limits
- Multi-input multimode operation supporting both Type-3 and Type-4 grids
- Prevents and increases system robustness against oscillations and generator trips
Summary
Our researchers have configured feedback control circuitry to modulate either the power order or the dc-link voltage reference in order to control coupling between voltage and power. This grid-side vector-based controller monitors d-axis converter current and PCC voltage to enhance operation for VSCs in both power control and dc-link voltage control modes. This invention is analytically and practically proven to significantly improve operation margins of both Type-3 and Type-4 wind grids using detail model-based testbeds. The invention provides shorter transients and lowers overshoots compared to the state-of-the-art. The controller can be connected to wind-based turbine generators of a wind farm and regulate the power deployed to a power grid, eliminating oscillations observed in real world wind farms with weak grid interconnections.
Dynamic Response of Uncontrolled (Green), Conventionally Controlled (Red) and Invention Controlled (Blue) Systems
Desired Partnerships
- License
- Sponsored Research
- Co-Development