The main contents of this book include wind power system access technology and control strategies based on series, parallel, and hybrid wind turbines, two-level grid connection control strategies for wind power systems based on flexible DC transmission, failure control strategies for receiving end converter valves, multi-level topology design and grid connection control strategies for wind power systems based on flexible DC transmission, and parameter design for flexible DC transmission wind power systems. It also introduces the modeling method based on MMC converter valve, the variable flow control technology and capacitor voltage balance control technology based on MMC converter valve, and the switching frequency and loss analysis of MMC converter valve. At the same time, the fault ride-through technology of the flexible DC transmission wind power system was also introduced, including the low-voltage ride-through control strategy of the MMC flexible DC transmission system and the operation and control method of the MMC-based receiving end converter valve under asymmetric grid faults, which improved the theoretical basis of the wind power system based on flexible DC transmission. Structural design and control methods.
