Frequency control method and control device of compressor of air conditioner

A compressor frequency and control method technology, which is applied in the control of air conditioner compressors, and in the field of frequency control of air conditioner compressors, can solve the problems of static error control, weak self-adaptive ability of the control process, and slow compressor frequency adjustment speed , to achieve the effect of reducing overshoot, eliminating control static difference, and stabilizing temperature regulation

Active Publication Date: 2010-09-15
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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Problems solved by technology

Since the control rules in the PI control method are also fixed, the adaptive ability of the control process is weak, and because the PI control does not consider the temperature difference change rate, the

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  • Frequency control method and control device of compressor of air conditioner
  • Frequency control method and control device of compressor of air conditioner
  • Frequency control method and control device of compressor of air conditioner

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Embodiment Construction

[0027] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Aiming at the deficiency that the existing variable frequency air conditioner adopts simple fuzzy control method or PI control method to adjust the frequency of the compressor, it cannot automatically change the established control rules and realize automatic optimal control with the change of room load, the present invention proposes a method that can Adaptively adjust the frequency of the compressor according to the actual load of the room, and adopt different control methods for the compressor frequency control method according to the difference in temperature. Control static difference.

[0029] figure 1 Shown is a flowchart of an embodiment of the air conditioner compressor frequency control method of the present invention. Such as figure 1 As shown, the specific process of this embodiment is ...

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Abstract

The invention discloses a frequency control method and control device of a compressor of an air conditioner. The method comprises the following steps: when the temperature difference between the actual temperature of the room in which the air conditioner is positioned and the set temperature of the air conditioner is greater than the preset value, firstly controlling the compressor to work at a first frequency until the temperature difference is equal to the preset temperature value; then controlling the compressor to work at a second frequency until the temperature difference is equal to 0 DEG C; when the temperature difference is equal to 0 DEG C and the room load is not changed, controlling the frequency of the compressor according to the intervention algorithm; when the temperature difference is equal to 0 DEG C and the room load is changed, modifying the working frequency of the compressor according to the intervention algorithm and the incremental PID algorithm; and when the temperature difference is not greater than the preset value, directly controlling the frequency of the compressor according to the incremental PID algorithm. In the invention, different control algorithms are used for adjusting the frequency of the compressor according to different temperature difference, thereby effectively reducing overshoot control, furthest eliminating control static error and realizing the purpose of simply, quickly and stably adjusting temperature.

Description

technical field [0001] The invention relates to the control of an air conditioner compressor, in particular to a method and device for frequency control of the air conditioner compressor, and belongs to the technical field of air conditioner control. Background technique [0002] Inverter air conditioner is a new type of air conditioner developed in recent years. It uses variable frequency inverter compressor and corresponding control technology, which can automatically adjust the operating frequency of the compressor according to the change of room temperature, and then change the speed of the compressor. Realize the adjustment of the temperature of the air conditioner. Inverter air conditioners have the characteristics of fast temperature adjustment, low noise, low energy consumption and long service life, and are the future development direction of the air conditioner market. [0003] Existing frequency conversion air conditioners generally use a simple look-up table fuz...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 康月曹双华殷显鑫张永良
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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