Device and method for calculating output power of three-phase asynchronous motor according to rotating speed and current

The invention relates to a device and a method for calculating output power of a three-phase asynchronous motor according to rotating speed and current. The device is characterized by at least comprising a three-phase power supply (1), the three-phase asynchronous motor (2), a current sensor (3), a rotating angle/rotating speed sensor (4), a data processing unit (5), a solving point unknown data prediction algorithm (6) and a pre-measured motor data two-dimensional array (7), wherein the three-phase power supply (1) is connected with the three-phase asynchronous motor (2) according to a star-shaped or triangular connection method, and the non-contact current sensor is sleeved in a connection loop between the three-phase power supply (1) and the three-phase asynchronous motor (2). According to the device and the method for calculating the output power of the three-phase asynchronous motor according to the rotating speed and the current, the load state and the working state of the motor can be calculated, the w