The invention discloses an AC/DC fault ride-through and energy dissipation method for wind power flexible direct grid connection. A system is mainly formed by a direct-drive permanent magnet synchronous generator, a full-power frequency converter, a hybrid MMC and a dissipative resistor. An AC and DC are controlled respectively through the hybrid MMC; during direct current faults, the MMC operatesnear a zero direct voltage through a negative input full-bridge sub-module, and DC fault ride-through can be achieved without needing to block MMC. In order to ensure the safety of a converter valveduring the fault, the dissipative resistor is used to absorb energy during the fault so that a wind farm is disconnected with a grid during the fault and still maintains normal operation.