Cascaded half-bridge-based super-capacitor energy storage device and control method thereof, and storage medium

The invention discloses a cascaded half-bridge-based super-capacitor energy storage device and a control method thereof, and a storage medium. The cascaded half-bridge-based super-capacitor energy storage device comprises a plurality of single-phase branches arranged in parallel, each single-phase branch comprises a plurality of energy storage units, a plurality of buck/boost converters, a cascaded branch based on a half-bridge module, a full-bridge module based on a bidirectional thyristor, an outlet filter inductor and a power grid. The energy storage unit is connected with the buck/boost converter, the cascaded branch based on the half-bridge module comprises a plurality of sub-modules, the buck/boost converter is connected with the sub-modules of the cascaded branch, the cascaded branch based on the half-bridge module is connected with the full-bridge module based on the bidirectional thyristor, and the full-bridge module based on the bidirectional thyristor is sequentially connected with the outlet filte