Out-of-step detection system and method for refrigeration equipment and compressor used therein
A refrigeration equipment and detection system technology, applied in mechanical equipment, pump testing, machine/engine, etc., can solve problems such as missed detection, inaccurate compressor estimation, inaccurate detection of out-of-step faults in compressors, etc., to improve accuracy accuracy and reliability, addressing the effects of inaccurate estimates
Active Publication Date: 2022-05-17
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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[0007] However, there are the following deficiencies in the prior art: since the compressor is controlled without a position sensor, the designer needs to pre-estimate the rotor position, and because the technical experience of different designers is quite different, the rotor position and rotational speed of the compressor are different. The estimation is not accurate enough, which leads to the inaccurate detection of the out-of-step fault of the compressor, and even the risk of missed detection
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[0050] The following will be combined with the accompanying drawings in the embodiments of the present invention, the technical solution in the embodiments of the present invention will be described clearly and completely, it is clear that the embodiments described are only a part of the embodiment of the present invention, not all embodiments. Based on embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative labor, are within the scope of protection of the present invention.
[0051] See Figure 1 , is a schematic structural diagram of a step-loss detection system for a compressor for refrigeration equipment provided in one embodiment of the present invention.
[0052] The step loss detection system of the compressor for refrigeration equipment, comprising: step loss detection module 1, control module 2, compressor drive module 3, compressor exhaust temperature detection device 4 and compressor 5;
[0053] ...
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The invention discloses a refrigeration equipment and a compressor out-of-step detection system and method used therefor, and relates to the field of refrigeration equipment. The system includes: a compressor exhaust temperature detection device, a compressor drive module, a control module, Out of step detection module and compressor; the temperature signal receiving end of the out of step detection module is connected to the compressor discharge temperature detection device, and the control end of the out of step detection module is connected to the controlled end of the control module ; the out-of-step detection module, which is used to: obtain the change in speed and the change in exhaust temperature of the compressor within a preset time period; determine whether the change in speed and the change in exhaust temperature meet the preset A variation threshold condition; if yes, it is determined that the compressor is in an out-of-step state. Through the above solution, the accuracy and reliability of out-of-step fault detection of the compressor can be further improved.
Description
Technical field [0001] The present invention relates to the technical field of refrigeration equipment, in particular to a refrigeration equipment and a compressor for which the step detection system and method are found. Background [0002] The main principle of inverter air conditioning is to achieve the change of the rotation frequency of the compressor by controlling the change of the signal control cycle. The essence of inverter air conditioning compressors is a permanent magnet synchronous motor without a position sensor, which is prone to out-of-step failure under excessive load or improper control. If the compressor is in a state of loss of step for a long time, it will not only lead to the air conditioner being unable to cool and heat normally, but also cause the compressor to be out of step when the compressor is not properly controlled, and it will also make the compressor winding heat, resulting in the compressor burning. [0003] In order to reduce the situation tha...
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IPC IPC(8): F04B51/00
CPCF04B51/00Y02B40/00
Inventor 刘晓飞王乐三尹磊张明磊
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD