Self-using energy regeneration device of elevator

The utility model discloses a self-using energy regeneration device of an elevator, which comprises an elevator driving frequency converter, an elevator traction machine, an elevator load and an elevator power failure emergency rescue device. A controllable current transformer is electrically connected between the elevator driving frequency converter and the elevator traction machine, a direct-current side of the controllable current transformer is electrically connected with a storage battery device, an alternating-current side of the controllable current transformer is electrically connected with the elevator load, and the storage battery device is electrically connected with the elevator power failure emergency rescue device. The elevator energy regeneration self-using device is used in an elevator driving system, and realizes regeneration and self-using of energy generated by frequent start and brake and up and down operation in a non-balance status of an elevator without consuming the energy by the aid o