Motor startup control method, device and air conditioner
A motor and controller technology, applied in the field of motors, can solve problems such as large moment of inertia, demanding current sampling accuracy, and large external fan power, so as to enhance adaptability and robustness, improve the probability of successful startup, and realize accurate The effect of control
Active Publication Date: 2018-03-27
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +2
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Problems solved by technology
This method has strict requirements on the accuracy of current sampling. If the current sampling is inaccurate, it will greatly affect the starting effect, and there is a process of initial positioning of the rotor. However, due to the large power and large moment of inertia of the external fan used in multi-line, this method method does not apply
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[0056] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0057] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.
[0058] figure 1 A schematic flow chart of a starting control method of an electric motor according to an embodiment of the present invention is shown.
[0059] Such as figure 1 As shown, the start...
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The present invention provides a motor startup control method, device, and air conditioner, wherein the motor startup control method includes: after starting the motor according to a received startup instruction, judging whether the rotation speed of the motor reaches the first a predetermined rotational speed; if it is determined that the rotational speed of the motor has not reached the first predetermined rotational speed, an open-loop control method is used to control the rotational speed of the electric motor; and if it is determined that the rotational speed of the electric motor reaches the first predetermined rotational speed, The rotational speed of the electric motor is then controlled in a closed-loop control manner. The technical scheme of the invention enhances the adaptability and robustness of the motor under different working conditions, realizes the precise control of the starting process of the motor, and is beneficial to improving the possibility of successful starting of the motor.
Description
technical field [0001] The present invention relates to the technical field of electric motors, in particular, to a motor start-up control method, a motor start-up control device and an air conditioner. Background technique [0002] With the concept of energy saving and environmental protection deeply rooted in the hearts of the people, in recent years, high-efficiency products such as multi-connected air conditioners and air energy heat pumps with significant energy saving effects have attracted more and more attention. Based on the requirements of energy efficiency and control performance, vibration and noise, etc., the outdoor fans installed on the outdoor units of multi-connected air conditioners and air energy heat pumps are becoming more and more popular as permanent magnet DC motors with sensorless vector control. Due to the various needs of users, the external fan has top air outlet, side air outlet, and even starts with static pressure. At the same time, before the ...
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IPC IPC(8): H02P1/18
Inventor 周超刘莉华王豪浩
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD