Sine DC frequency conversion multi-split air conditioner control system and its control method

A DC frequency conversion and control method technology, applied in control systems, heating and ventilation control systems, AC motor control and other directions, can solve problems such as reducing the utilization efficiency of compressors, the influence of zero-crossing detection, and affecting the accuracy of zero-crossing detection, etc. The effect of improving high-frequency characteristics and low-frequency characteristics

CN101191651AActive Publication Date: 2008-06-04HAIER GRP CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-06-04

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    Figure 1
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    Figure 2
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    Figure 3
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Abstract

The present invention discloses a sine DC variable frequency one-driving-multiple air conditioner control system, comprising an outdoor unit controller, at least three indoor units and a DC variable frequency compressor, wherein, the outdoor unit controller further controls an outdoor unit intelligent control module, an intelligent frequency conversion module, an indoor-outdoor unit communication module and a temperature acquisition module; the outdoor unit intelligent control module is used for controlling the drive of the DC variable frequency compressor. The present invention also discloses a sine DC variable frequency one-driving-multiple air conditioner control method, which first calculates the needed frequency of the DC variable frequency compressor, and then calculates the instantaneous position and the velocity information of a DC variable frequency compressor rotor, and finally drives the DC variable frequency compressor. The present invention increases the service efficiency of the compressors of one-driving-multiple air conditioners, improves the high frequency characteristics and low frequency characteristics of air conditioners, and ensures that one-driving-multiple air conditioners save more energy.
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Description

technical field

[0001] The invention relates to the technical field of DC frequency conversion air conditioners, in particular to a sinusoidal DC frequency conversion one-drag multi-air conditioner control system and a method thereof. Background technique

[0002] With the coming of the worldwide energy crisis, governments of various countries are actively promoting energy-saving and consumption-reducing technologies for the purpose of sustainable economic development. As the main equipment for household electricity consumption, traditional fixed-frequency air conditioners and AC inverter air conditioners are gradually withdrawing from the market due to their low operating efficiency. DC inverter air conditioners are more and more popular among users because of their good energy saving, precise temperature control, ultra-low temperature start-up, and rapid heating.

[0003] One-to-many air conditioners are one outdoor unit with multiple indoor units (greater than or equal t...

Examples

Embodiment 1

[0025] Embodiment one, when adopting image 3 The shown sinusoidal DC frequency conversion one-drag multi-air conditioner control system, the flow of the sinusoidal DC frequency conversion one-drag multi-air conditioner control method of the present invention is as follows Figure 4 Shown, the present invention comprises the following steps:

[0026] In step S101 , a plurality of indoor units collect their respective set temperature, indoor ambient temperature, indoor unit capacity and indoor unit wind speed information, and transmit the indoor information to the outdoor unit intelligent control module 11 .

[0027] Step S102 , the temperature collection module 13 collects outdoor temperature information, and transmits the outdoor temperature information to the outdoor unit intelligent control module 11 .

[0028] In step S103, the frequency calculation unit 112 calculates the required frequency of the DC inverter compressor 2 through a mathematical model according to the ind...