Motor current determining method and device, air conditioner, storage medium and processor

Abstract

The invention discloses a motor current determining method and device, an air conditioner, a storage medium and a processor. The method comprises the steps: determining the phase of a q-axis current compensation amount of a motor; determining a q-axis correction current amplitude of the motor by adopting a cosine wave torque feedforward compensation algorithm; determining a torque feedforward compensation current of the motor according to the q-axis correction current amplitude and the phase of the q-axis current compensation amount; compensating the initial torque current of the motor according to the torque feedforward compensation current to obtain the current of the motor; and controlling the operation of the motor according to the current. According to the scheme, the compressor adaptively adjusts the low-speed fluctuation suppression compensation current value along with the change of the working condition, the rotating speed fluctuation of the compressor in the low-frequency running stage is suppressed, and the running performance of the whole machine is improved.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a method and device for determining motor current, an air conditioner, a storage medium and a processor, in particular to an adaptive optimization method and device based on cosine wave torque feedforward compensation current amplitude , air conditioners, storage media and processors. Background technique [0002] The influencing factors of the torque fluctuation of the permanent magnet synchronous motor (PMSM) type inverter compressor are, on the one hand, caused by the factors of the motor body such as cogging effect, flux linkage harmonics, and asymmetrical stator current distribution, and on the other hand Aspects are closely related to the load characteristics of the motor. During the whole low-frequency process, the load torque of the compressor is affected by various external uncertain factors, and the compressor system also follows these factors and enters an uncertain op...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method, device, air conditioner, storage medium and processor for determining the motor current, so as to solve the problem that the speed fluctuation of the compressor in the low-frequency operation stage affects the operation performance of the whole machine, and achieve the purpose of making the compressor Adaptively adjust the low-speed fluctuation suppression compensation current value following the change of working conditions, suppress the speed fluctuation of the compressor in the low-frequency operation stage, and improve the effect of the overall operating performance

Images