Abstract: An energy storage system is provided. The energy storage system includes a plurality of battery clusters, a plurality of power regulators, a transformer, and a central controller. The plurality of power regulators is configured to control charging and discharging of the plurality of battery clusters. Each power regulator is electrically coupled to corresponding two, at most, of the plurality of battery clusters. A first terminal of the transformer is electrically coupled to the plurality of power regulators, and a second terminal of the transformer is electrically coupled to the power grid. The central controller is coupled to the plurality of power regulators and the plurality of battery clusters for controlling the plurality of power regulators and the plurality of battery clusters. The central controller is in communication with the plurality of power regulators through optical fibers, and a data transmission rate of the optical fibers is greater than 1 Mbit/s.

Abstract: The present invention relates to the technical field of motor control, and discloses an apparatus for measuring excitation parameters of an induction motor and a method thereof. The method comprises: maintaining the induction motor static, and inputting a test current to a test phase of the induction motor; and calculating, based on a voltage of the test phase of the induction motor, a stator flux linkage of the test phase of the induction motor corresponding to a magnitude of the test current. The disclosure can conveniently and accurately measure excitation parameters of the induction motor.

Abstract: The present invention relates to the technical field of motor control, and discloses an apparatus for measuring excitation parameters of an induction motor and a method thereof. The method comprises: maintaining the induction motor static, and inputting a test current to a test phase of the induction motor; and calculating, based on a voltage of the test phase of the induction motor, a stator flux linkage of the test phase of the induction motor corresponding to a magnitude of the test current. The disclosure can conveniently and accurately measure excitation parameters of the induction motor.