Control method, control device and controller

Abstract

The embodiment of the invention provides a control method, a control device and a controller, which are used for controlling a motor. The control method comprises the steps: acquiring the position error mechanical frequency fluctuation quantity and the angular speed mechanical frequency fluctuation quantity; subtracting the position error from the mechanical frequency fluctuation quantity of the position error to obtain an updated position error; calculating a reckoning angular velocity according to the updated position error; superposing the angular velocity mechanical frequency fluctuation quantity to the reckoning angular velocity to obtain an updated angular velocity, and calculating the electrical angle position of the rotor according to the updated angular velocity; and carrying outthe motor control according to the updated angular speed and the electrical angle position of the rotor. According to the embodiment of the invention, feedforward compensation can be carried out on the estimated position error value of the motor, and the rotor position tracking capability is improved, so that the effect of improving the efficiency is achieved.

Description

technical field [0001] The present application relates to the technical field of electric control, and more specifically, relates to a control method, a control device and a controller for a motor. Background technique [0002] In the compressor control of the current air conditioner, the inventor found that: due to the structural reasons of the compressor, the actual instantaneous speed of the compressor will fluctuate in the mechanical speed cycle during operation, which is not stable at the target speed; due to the compressor speed There are fluctuations in the mechanical cycle, and the estimated rotational speed may have fluctuations in the mechanical rotational speed cycle that deviate from the actual position, thereby affecting efficiency. Contents of the invention [0003] In view of this, the embodiments of the present application provide a control method, a control device, and a controller, which can compensate the estimated position error value of the motor and i...

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Problems solved by technology

[0002] In the compressor control of the current air conditioner, the inventor found that: due to the structural reasons of the compressor, the actual instantaneous speed of the compressor will fluctuate in the mechanical speed cycle during operation, and it will not be stable at the target speed; There are fluctuations in the mechanical cycle, and the calculated rotational speed may fluctuate from the mechanical rotational speed cycle of the actual position, thereby affecting the efficiency

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