A kind of MTPA control method for interior permanent magnet synchronous motor with parameter identification.

Maximum Torque Per Ampere (MTPA) control makes full use of the Interior Permanent Magnet Synchronous Motor(IPMSM), and the current is minimized under the same torque, so that the energy consumption is minimized. In this paper, the formula method is used to directly calculate the current operating point. The direct calculation method relies on motor parameters, In order to solve this problem, this paper combines the least squares one-time algorithm and the recursive algorithm, and adopts the least-squares limited memory method to identify these parameters. So that The current amplitude of the motor is always kept to a minimum.