Compressor rotational vibration compensation control method

Abstract

The invention relates to the field of air conditioners, and discloses a compressor rotational vibration compensation control method, which is used for solving a problem of load torque pulsation of thecompressor during low-frequency operation. The scheme comprises the following steps of obtaining an optimal compensation angle of the compressor at a certain working frequency in advance; acquiring compressor parameters and working condition parameters, and calculating a load torque curve of the compressor changing along with time at different working frequencies; calculating the optimal compensation angle under different working frequencies by utilizing the obtained optimal compensation angle; calculating a compensation torque curve of the compressor changing with time under different working frequencies according to the load torque curve; according to the optimal compensation angle and the compensation torque curve under the different working frequencies, obtaining a current compensation curve of a Q shaft of a compressor motor which changes along with time under the different working frequencies; and finally, calling the current compensation curve under each working frequency for compensation. The method is suitable for the air-conditioning compressor.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a compressor rotation vibration compensation control method. Background technique [0002] When the compressor is running at a low frequency, such as when the inverter air conditioner compressor is running at a low frequency of 5-40HZ, within a mechanical cycle (suction, compression, exhaust), the load torque of the three stages fluctuates greatly in a pulsating manner, presenting a severe The impact of fluctuations, but the orthogonal axis current that controls the electromagnetic torque of the motor will not change suddenly, resulting in an imbalance between the electromagnetic torque and the load torque, and the motor cannot run stably in the low frequency range. Due to the requirements of energy saving and environmental protection, the frequency conversion air conditioner will run in the low frequency band most of the time after reaching the set temperature, and the low freque...

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