CN115014013B - Compressor control method, compressor system and air conditioner - Google Patents

Compressor control method, compressor system and air conditioner Download PDF

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Publication number
CN115014013B
CN115014013B CN202210648694.4A CN202210648694A CN115014013B CN 115014013 B CN115014013 B CN 115014013B CN 202210648694 A CN202210648694 A CN 202210648694A CN 115014013 B CN115014013 B CN 115014013B
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compressor
rotating speed
preset
phase current
change rate
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CN115014013A (en
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海蔚兰
徐常升
官猛
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Gree Electric Appliances Inc of Zhuhai
Zhuhai Landa Compressor Co Ltd
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Gree Electric Appliances Inc of Zhuhai
Zhuhai Landa Compressor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Air Conditioning Control Device (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

The application provides a control method of a compressor, a compressor system and an air conditioner, wherein the method comprises the following steps: acquiring a rotating speed set, wherein the rotating speed set comprises a plurality of preset rotating speeds which are sequentially increased; controlling the compressors to operate at a plurality of preset rotating speeds which are sequentially increased in a concentrated manner so as to execute an up-conversion action and obtain the phase current change rate of the compressors in the up-conversion process; and when the phase current change rate is greater than the preset threshold value, adjusting the rotating speed set according to the phase current change rate so that the adjusted phase current change rate is smaller than or equal to the preset threshold value. The method and the device solve the problems of current flowing and stopping in the current rising process of the compressor in the prior art.

Description

Compressor control method, compressor system and air conditioner
Technical Field
The present application relates to the field of compressor control, and in particular, to a control method of a compressor, a computer readable storage medium, a processor, a compressor system, and an air conditioner.
Background
In the refrigeration industry, because the refrigeration requirement needs to quickly raise the operation frequency of the compressor to high-frequency operation, phenomena such as current overcurrent and compressor skip stop can occur in the quick frequency raising process, the current protection upper limit is set in the existing method, but the current change is too quick, so that the compressor skip stop can be caused.
The above information disclosed in the background section is only for enhancement of understanding of the background art from the technology described herein and, therefore, may contain some information that does not form the prior art that is already known in the country to a person of ordinary skill in the art.
Disclosure of Invention
The main objective of the present application is to provide a control method for a compressor, a computer readable storage medium, a processor, a compressor system and an air conditioner, so as to solve the problems of current overflow, skip stop and the like in the frequency raising process of the compressor in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a control method of a compressor, including: acquiring a rotating speed set, wherein the rotating speed set comprises a plurality of preset rotating speeds which are sequentially increased; controlling the compressors to respectively run at a plurality of preset rotating speeds which are concentrated and sequentially increased in the rotating speed so as to execute the frequency-increasing action and obtain the phase current change rate of the compressors in the frequency-increasing process; and when the phase current change rate is larger than a preset threshold value, adjusting the rotating speed set according to the phase current change rate so that the adjusted phase current change rate is smaller than or equal to the preset threshold value.
Optionally, in a case where the phase current change rate is greater than a predetermined threshold, adjusting the rotation speed set according to the phase current change rate so that the adjusted phase current change rate is less than or equal to the predetermined threshold, including: and under the condition that the phase current change rate is larger than the preset threshold value, determining a transition rotating speed at least according to a first preset rotating speed, and increasing the transition rotating speed to a position between a second preset rotating speed and the first preset rotating speed, so as to obtain a new rotating speed set, and controlling the compressor to continuously execute the frequency-increasing action according to the new rotating speed set, so that the phase current change rate in the frequency-increasing process is smaller than or equal to the preset threshold value, wherein the first preset rotating speed is the preset rotating speed to which the compressor is currently required to be increased, the second preset rotating speed is the preset rotating speed which is adjacent to the first preset rotating speed in the rotating speed set and is smaller than the first preset rotating speed, or the second preset rotating speed is the initial rotating speed before the compressor executes the frequency-increasing action, and the transition rotating speed is smaller than the first preset rotating speed and is larger than the second preset rotating speed.
Optionally, when the phase current change rate is greater than the predetermined threshold, increasing a transition rotation speed to a value between a second predetermined rotation speed and the first predetermined rotation speed according to at least the first predetermined rotation speed, to obtain a new rotation speed set, and controlling the compressor to continue to perform the frequency-up action according to the new rotation speed set, so that the phase current change rate in the frequency-up process is less than or equal to the predetermined threshold, including: an acquisition step of determining a transition rotational speed and increasing the transition rotational speed to a value between the second predetermined rotational speed and the first predetermined rotational speed according to at least the first predetermined rotational speed in the case where the phase current change rate is larger than the predetermined threshold value, to obtain a new rotational speed set; a control step of controlling the compressor to continue to operate at a plurality of predetermined rotational speeds which are sequentially increased in a new rotational speed set, respectively, from the transition rotational speed; a determining step of determining whether the phase current change rate in the frequency raising process is greater than the predetermined threshold; and a circulation step of sequentially executing the acquisition step, the control step and the determination step at least once until the actual rotation speed of the compressor reaches the preset rotation speed with the maximum rotation speed concentration.
Optionally, determining the transition rotational speed at least according to the first predetermined rotational speed includes: acquiring a first preset multiple and the first preset rotating speed, wherein the first preset multiple is more than 0 and less than 1; multiplying the first preset multiple by the first preset rotating speed to obtain the transition rotating speed.
Optionally, acquiring a phase current change rate of the compressor during the frequency up-conversion process includes: and in the frequency raising process, the phase current change rate is obtained every a preset time.
Optionally, obtaining the rotation speed set includes: obtaining a second preset multiple and the final rotating speed of the compressor in the frequency raising process; according to W n ＝W n-1 +(W N N) to obtain a plurality of preset rotating speeds, wherein N is the second preset multiple, W N For the final rotation speed, W n For the predetermined rotational speed other than the final rotational speed, W n-1 Is W and n adjacent and less than W n N is more than 1 and less than or equal to N; and arranging a plurality of preset rotating speeds in sequence from small to large to obtain the rotating speed set.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program performs any one of the methods.
According to still another aspect of an embodiment of the present invention, there is provided a processor including: the processor is configured to run a program, where the program executes any one of the methods.
According to yet another aspect of an embodiment of the present invention, there is also provided a compressor system including a compressor and a controller of the compressor, wherein the controller of the compressor includes one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods.
According to an aspect of the embodiment of the invention, there is also provided an air conditioner including the compressor system.
In the embodiment of the invention, in the control method of the compressor, firstly, a rotating speed set comprising a plurality of preset rotating speeds which are increased in sequence is obtained, then, the compressor is controlled to operate at the preset rotating speeds which are increased in sequence respectively to execute the frequency-increasing action, the phase current change rate of the compressor in the frequency-increasing process is obtained, and finally, when the phase current change rate is greater than a preset threshold value, the rotating speed set is adjusted according to the phase current change rate, so that the adjusted phase current change rate is smaller than or equal to the preset threshold value. Compared with the prior art, the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor jumps to stop, the actual rotating speed of the compressor can be sequentially increased to a plurality of preset rotating speeds in the frequency increasing process, the graded adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed set is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed a preset threshold value, the effect of safe and quick frequency increasing is achieved, the problem that the compressor jumps to stop in the quick frequency increasing process due to the current flowing is avoided, the damage of the compressor caused by the jump is avoided, and the better performance of the compressor is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 illustrates a control method schematic of a compressor according to an embodiment of the present application;
FIG. 2 illustrates a transitional speed control flow diagram in a method of controlling a compressor according to an embodiment of the present application;
FIG. 3 shows a schematic diagram of a control device of a compressor according to an embodiment of the present application;
fig. 4 shows a schematic diagram of a compressor system structure according to an embodiment of the present application.
Wherein the above figures include the following reference numerals:
100. a phase current detection calculation module; 101. a compressor rotation speed overall control module; 102. a compressor speed module; 103. a compressor.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, in the description and in the claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As described in the background art, in order to solve the above problems, in an exemplary embodiment of the present application, a control method of a compressor, a computer readable storage medium, a processor, a compressor system, and an air conditioner are provided.
According to an embodiment of the present application, there is provided a control method of a compressor.
Fig. 1 is a flowchart of a control method of a compressor according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S101, a rotating speed set is obtained, wherein the rotating speed set comprises a plurality of preset rotating speeds which are increased in sequence;
step S102, controlling the compressor to operate at a plurality of preset rotating speeds which are sequentially increased in the rotating speed set respectively so as to execute an up-conversion action and obtain the phase current change rate of the compressor in the up-conversion process;
step S103, when the phase current change rate is greater than a predetermined threshold value, the rotation speed set is adjusted according to the phase current change rate so that the adjusted phase current change rate is less than or equal to the predetermined threshold value.
In the control method of the compressor, firstly, a rotating speed set comprising a plurality of preset rotating speeds which are increased in sequence is obtained, then, the compressor is controlled to operate at the preset rotating speeds which are increased in sequence respectively to execute frequency-increasing action, the phase current change rate of the compressor in the frequency-increasing process is obtained, and finally, when the phase current change rate is larger than a preset threshold value, the rotating speed set is adjusted according to the phase current change rate, so that the adjusted phase current change rate is smaller than or equal to the preset threshold value. Compared with the prior art, the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor jumps to stop, the actual rotating speed of the compressor can be sequentially increased to a plurality of preset rotating speeds in the frequency increasing process, the graded adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed set is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed a preset threshold value, the effect of safe and quick frequency increasing is achieved, the problem that the compressor jumps to stop in the quick frequency increasing process due to the current flowing is avoided, the damage of the compressor caused by the jump is avoided, and the better performance of the compressor is ensured.
According to a specific embodiment of the present application, when the phase current change rate is greater than a predetermined threshold, the rotating speed set is adjusted according to the phase current change rate so that the adjusted phase current change rate is less than or equal to the predetermined threshold, including: and when the phase current change rate is greater than the predetermined threshold value, determining a transient rotational speed at least according to a first predetermined rotational speed, which is the predetermined rotational speed to which the compressor is currently to be increased, and increasing the transient rotational speed between a second predetermined rotational speed, which is the predetermined rotational speed adjacent to the first predetermined rotational speed and which is less than the first predetermined rotational speed, or a first predetermined rotational speed at which the compressor is to perform the frequency-increasing operation, or a second predetermined rotational speed, which is the initial rotational speed before the compressor performs the frequency-increasing operation, and controlling the compressor to continue the frequency-increasing operation according to the new rotational speed set such that the phase current change rate is less than or equal to the predetermined threshold value. The transition rotating speed is determined through the first preset rotating speed and is added between the second preset rotating speed and the first preset rotating speed, so that a new rotating speed set is obtained, the difference between adjacent preset rotating speeds in the rotating speed set is further reduced, the compressor is controlled to execute the frequency-increasing action according to the new rotating speed set, the phase current change rate is ensured to be smaller than or equal to a preset threshold value, the graded control of the rotating speed and the current of the compressor is further realized, and the problems of current overflow, skip stop and the like of the compressor in the frequency-increasing process of the compressor are further solved.
In a specific embodiment, the initial rotational speed is 0.
In order to further solve the problems of current flowing and stopping during the frequency raising process of the compressor in the prior art, further ensure that the performance of the compressor is not damaged due to the problems of stopping and stopping, according to another specific embodiment of the present application, when the phase current change rate is greater than the predetermined threshold, at least according to a first predetermined rotation speed, the transition rotation speed is increased to a value between a second predetermined rotation speed and the first predetermined rotation speed, so as to obtain a new rotation speed set, and the compressor is controlled to continue to execute the frequency raising operation according to the new rotation speed set, so that the phase current change rate during the frequency raising process is less than or equal to the predetermined threshold, including: an acquisition step of determining a transient rotational speed based on at least the first predetermined rotational speed and increasing the transient rotational speed between the second predetermined rotational speed and the first predetermined rotational speed when the phase current change rate is greater than the predetermined threshold value, thereby obtaining a new rotational speed set; a control step of controlling the compressor to continue to operate at a plurality of predetermined rotational speeds, which are sequentially increased in a new rotational speed set, from the transition rotational speed; a determining step of determining whether or not the phase current change rate in the frequency raising process is greater than the predetermined threshold value; and a circulation step of sequentially executing the acquisition step, the control step, and the determination step at least once until the actual rotational speed of the compressor reaches the predetermined rotational speed at which the rotational speed concentration is maximum. Through the circulation control process, the real-time regulation and control of the rotating speed in the frequency raising process of the compressor are further realized, the safe and rapid frequency raising effect of the compressor is further realized, and the jump stop of the compressor caused by current overcurrent is further avoided.
According to yet another specific embodiment of the present application, determining the transition rotational speed based at least on the first predetermined rotational speed comprises: acquiring a first preset multiple and the first preset rotating speed, wherein the first preset multiple is more than 0 and less than 1; multiplying the first preset multiple by the first preset rotating speed to obtain the transition rotating speed. The first preset rotating speed is multiplied by a positive number smaller than 1, so that the obtained transition rotating speed is ensured to be smaller, the preset rotating speed in the rotating speed set is further refined, and the grading control effect on the rotating speed in the frequency raising process of the compressor is further realized.
According to another embodiment of the present application, obtaining a phase current change rate of the above-mentioned compressor during an up-conversion process includes: and in the frequency raising process, the phase current change rate is obtained every a preset time. When the compressor is in the frequency-increasing state, the phase current change rate is obtained once every preset time, the phase current change rate of the compressor is monitored at any time, if the phase current change rate of the compressor exceeds a preset threshold value, the rotating speed set is updated immediately through the transition rotating speed, so that the phase current change rate in the frequency-increasing process is smaller than or equal to the preset threshold value, and the problems of current overcurrent, skip stop and the like are further avoided.
In order to further realize the graded regulation and control of the actual rotation speed and the actual current of the compressor, further avoid too fast current change, according to another specific embodiment of the present application, obtaining the rotation speed set includes: acquiring a second preset multiple and the final rotating speed of the compressor in the frequency raising process; according to W n ＝W n-1 +(W N N) to obtain a plurality of the predetermined rotational speeds, wherein N is the second preset multiple, W N For the final rotation speed, W n For the above-mentioned predetermined rotational speed other than the above-mentioned final rotational speed, W n-1 Is W and n adjacent and less than W n N is more than 1 and less than or equal to N; and arranging a plurality of preset rotating speeds in sequence from small to large to obtain the rotating speed set. According to the formula, the final rotating speed can be equally divided into N parts, a plurality of equally divided preset rotating speeds are obtained, and the current is controlled in a grading manner by adopting a method for regulating the final target rotating speed in a grading manner, so that the current of the compressor can be stably transited, and the problems of current overcurrent, skip stop and the like of the compressor in rapid frequency rising are further effectively solved.
In one embodiment, as shown in fig. 2, the transient rotation speed control flow in the control method of the compressor of the present application includes the following steps:
Step 1, equally dividing the final rotation speed of the compressor into N grades, and setting a preset multiple, wherein N is more than 1, namely the preset rotation speed W 1 、W 2 、W 3 …W N In the process of frequency up-conversion, respectively using W 1 、W 2 、W 3 …W N For a plurality of predetermined rotational speeds that increase in sequence;
step 2, a plurality of preset rotating speeds in the rotating speed set should meet that the current change rate A is smaller than a preset threshold value K, wherein the preset threshold value K is larger than 0, and if the phase current change rate A is larger than the preset threshold value K, the transition rotating speed W should be newly increased on the basis of the preset rotating speeds p1 ；
Step 3, taking the step 2 of raising the frequency of the compressor from 0 to a first preset rotating speed as an example, if the phase current change rate A is smaller than the preset threshold K, continuing to operate the compressor, and quickly raising the frequency to the first preset rotating speed; if the phase current change rate A is greater than the predetermined threshold value K, a transition rotation speed W should be increased between 0 and the first predetermined rotation speed range p1 Newly increasing the transition rotation speed W p1 A first preset multiple s is multiplied by a first preset rotation speed, wherein the first preset multiple s is larger than 0 and smaller than 1, and if the phase current change rate A is still larger than a preset threshold value K, the transition rotation speed is reset, and the set transition rotation speed is smaller than W p1 ；
Step 4, the phase current change rate A is obtained by measuring any phase current of the compressor, and the phase current is calculated by taking Ts as a sampling period The change rate A is set to be i in the phase current of the last sampling period 0 Phase current after time interval Ts is i 1 The phase current change rate is
Figure BDA0003687055580000061
And 5, as shown in fig. 2, comparing whether the phase current change rate A is larger than the preset threshold K again, if not, continuing to operate the compressor, rapidly increasing the frequency to the transition rotating speed, and then increasing the frequency to the first preset rotating speed. If the phase current change rate A is larger than the preset threshold value K, resetting the transition rotating speed, namely, the rotating speed is smaller than the original newly increased rotating speed value, and then quickly increasing the frequency of the compressor to the transition rotating speed and then increasing the frequency to the first preset rotating speed. Thereafter, a plurality of predetermined rotational speed up-conversion processes are performed as described above.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
The embodiment of the application also provides a control device of the compressor, and the control device of the compressor can be used for executing the control method for the compressor. The following describes a control device of a compressor provided in an embodiment of the present application.
Fig. 3 is a schematic view of a control device of a compressor according to an embodiment of the present application. As shown in fig. 3, the device comprises an acquisition unit 10, a control unit 20 and an adjustment unit 30, wherein the acquisition unit 10 is used for acquiring a rotation speed set, and the rotation speed set comprises a plurality of preset rotation speeds which are sequentially increased; the control unit 20 is configured to control the compressors to operate at a plurality of predetermined rotational speeds that sequentially increase in the rotational speed set, respectively, so as to perform an up-conversion operation, and obtain a phase current change rate of the compressors during the up-conversion operation; the adjusting unit 30 is configured to adjust the rotation speed set according to the phase current change rate so that the adjusted phase current change rate is less than or equal to the predetermined threshold value when the phase current change rate is greater than the predetermined threshold value.
In the control device of the compressor, the acquisition unit acquires the rotating speed set comprising a plurality of preset rotating speeds which are sequentially increased, the control unit controls the compressor to respectively run at the plurality of preset rotating speeds which are sequentially increased so as to execute the frequency-increasing action, the phase current change rate of the compressor in the frequency-increasing process is acquired, and the adjustment unit adjusts the rotating speed set according to the phase current change rate when the phase current change rate is greater than a preset threshold value so that the adjusted phase current change rate is smaller than or equal to the preset threshold value. Compared with the prior art, the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor jumps to stop, the actual rotating speed of the compressor can be sequentially increased to a plurality of preset rotating speeds in the frequency increasing process, the graded adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed set is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed a preset threshold value, the effect of safe and quick frequency increasing is achieved, the problem that the compressor jumps to stop in the quick frequency increasing process due to the current flowing is avoided, the damage of the compressor caused by the jump is avoided, and the better performance of the compressor is ensured.
According to a specific embodiment of the present application, the adjusting unit includes a determining module, where the determining module is configured to determine a transitional speed and increase the transitional speed to a speed between a second predetermined speed and the first predetermined speed according to at least a first predetermined speed when the phase current change rate is greater than the predetermined threshold, and control the compressor to continue to perform the frequency-increasing operation according to the new speed set, so that the phase current change rate is less than or equal to the predetermined threshold during the frequency-increasing process, where the first predetermined speed is the predetermined speed to which the compressor is currently to be increased, and the second predetermined speed is the predetermined speed that is adjacent to the first predetermined speed in the frequency-increasing set and is less than the first predetermined speed, or the second predetermined speed is the initial speed before the frequency-increasing operation is performed by the compressor, and the transitional speed is less than the first predetermined speed and is greater than the second predetermined speed. The transition rotating speed is determined through the first preset rotating speed and is added between the second preset rotating speed and the first preset rotating speed, so that a new rotating speed set is obtained, the difference between adjacent preset rotating speeds in the rotating speed set is further reduced, the compressor is controlled to execute the frequency-increasing action according to the new rotating speed set, the phase current change rate is ensured to be smaller than or equal to a preset threshold value, the graded control of the rotating speed and the current of the compressor is further realized, and the problems of current overflow, skip stop and the like of the compressor in the frequency-increasing process of the compressor are further solved.
In a specific embodiment, the initial rotational speed is 0.
In order to further solve the problems of current flowing and stopping during the frequency-increasing process of the compressor in the prior art, further ensure that the performance of the compressor is not damaged due to the problems of stopping and the like, according to another specific embodiment of the present application, the determining module includes a first obtaining submodule, a control submodule, a determining submodule and a circulating submodule, where the first obtaining submodule is used for obtaining the step, and under the condition that the phase current change rate is greater than the predetermined threshold, determining a transition rotational speed at least according to the first predetermined rotational speed, and increasing the transition rotational speed between the second predetermined rotational speed and the first predetermined rotational speed, so as to obtain a new rotational speed set; the control submodule is used for controlling the compressor to start from the transition rotating speed and continuously operate at a plurality of preset rotating speeds which are increased in turn in a new rotating speed set respectively; the determining submodule is used for determining whether the phase current change rate is larger than the preset threshold value in the up-conversion process; the circulation submodule is configured to perform the acquiring step, the controlling step, and the determining step at least once in order until the actual rotational speed of the compressor reaches the predetermined rotational speed at which the rotational speed concentration is maximum. Through the circulation control process, the real-time regulation and control of the rotating speed in the frequency raising process of the compressor are further realized, the safe and rapid frequency raising effect of the compressor is further realized, and the jump stop of the compressor caused by current overcurrent is further avoided.
According to still another specific embodiment of the present application, the determining module includes a second obtaining sub-module and a multiplying sub-module, where the second obtaining sub-module is configured to obtain a first preset multiple and the first predetermined rotation speed, where the first preset multiple is greater than 0 and less than 1; the multiplication submodule is used for multiplying the first preset multiple by the first preset rotating speed to obtain the transition rotating speed. The first preset rotating speed is multiplied by a positive number smaller than 1, so that the obtained transition rotating speed is ensured to be smaller, the preset rotating speed in the rotating speed set is further refined, and the grading control effect on the rotating speed in the frequency raising process of the compressor is further realized.
According to another embodiment of the present application, the acquiring unit includes a first acquiring module, where the first acquiring module is configured to acquire the phase current change rate once every predetermined time during the frequency raising process. When the compressor is in the frequency-increasing state, the phase current change rate is obtained once every preset time, the phase current change rate of the compressor is monitored at any time, if the phase current change rate of the compressor exceeds a preset threshold value, the rotating speed set is updated immediately through the transition rotating speed, so that the phase current change rate in the frequency-increasing process is smaller than or equal to the preset threshold value, and the problems of current overcurrent, skip stop and the like are further avoided.
In order to further realize the graded regulation and control of the actual rotation speed and the actual current of the compressor, further avoid too fast current change, according to another specific embodiment of the present application, the acquisition unit includes a second acquisition module, a processing module, and an arrangement module, where the second acquisition module is configured to acquire a second preset multiple and a final rotation speed of the compressor in the frequency raising process; the processing module is used for processing the data according to W n ＝W n-1 +(W N N) to obtain a plurality of the predetermined rotational speeds, wherein N is the preset multiple, W N To get up toThe final rotation speed, W n For the above-mentioned predetermined rotational speed other than the above-mentioned final rotational speed, W n-1 Is W and n adjacent and less than W n N is more than 1 and less than or equal to N; the arrangement module is used for sequentially arranging a plurality of preset rotating speeds from small to large to obtain the rotating speed set. According to the formula, the final rotating speed can be equally divided into N parts, a plurality of equally divided preset rotating speeds are obtained, and the current is controlled in a grading manner by adopting a method for regulating the final target rotating speed in a grading manner, so that the current of the compressor can be stably transited, and the problems of current overcurrent, skip stop and the like of the compressor in rapid frequency rising are further effectively solved.
In one embodiment, as shown in fig. 2, the control flow of the transitional rotation speed control by the acquisition unit in the control device of the compressor of the present application includes the following steps:
step 1, equally dividing the final rotation speed of the compressor into N grades, and setting a preset multiple, wherein N is more than 1, namely the preset rotation speed W 1 、W 2 、W 3 …W N In the process of frequency up-conversion, respectively using W 1 、W 2 、W 3 …W N For a plurality of predetermined rotational speeds that increase in sequence;
step 2, a plurality of preset rotating speeds in the rotating speed set should meet that the current change rate A is smaller than a preset threshold value K, wherein the preset threshold value K is larger than 0, and if the phase current change rate A is larger than the preset threshold value K, the transition rotating speed W should be newly increased on the basis of the preset rotating speeds p1 ；
Step 3, taking the step 2 of raising the frequency of the compressor from 0 to a first preset rotating speed as an example, if the phase current change rate A is smaller than the preset threshold K, continuing to operate the compressor, and quickly raising the frequency to the first preset rotating speed; if the phase current change rate A is greater than the predetermined threshold value K, a transition rotation speed W should be increased between 0 and the first predetermined rotation speed range p1 Newly increasing the transition rotation speed W p1 A first preset multiple s is multiplied by a first preset rotation speed, wherein the first preset multiple s is larger than 0 and smaller than 1, and if the phase current change rate A is still larger than a preset threshold value K, the transition rotation speed is reset, and the set transition rotation speed is smaller than W p1 ；
Step 4, the phase current change rate A is obtained by measuring any phase current of the compressor, the change rate A of the phase current is calculated by taking Ts as a sampling period, and the phase current of the last sampling period is set as i 0 Phase current after time interval Ts is i 1 The phase current change rate is
Figure BDA0003687055580000081
And 5, as shown in fig. 2, comparing whether the phase current change rate A is larger than the preset threshold K again, if not, continuing to operate the compressor, rapidly increasing the frequency to the transition rotating speed, and then increasing the frequency to the first preset rotating speed. If the phase current change rate A is larger than the preset threshold value K, resetting the transition rotating speed, namely, the rotating speed is smaller than the original newly increased rotating speed value, and then quickly increasing the frequency of the compressor to the transition rotating speed and then increasing the frequency to the first preset rotating speed. Thereafter, a plurality of predetermined rotational speed up-conversion processes are performed as described above.
The control device of the compressor comprises a processor and a memory, wherein the acquisition unit, the control unit, the adjustment unit and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the problems of current flowing and skip stopping in the frequency-increasing process of the compressor in the prior art are solved by adjusting the parameters of the inner core.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium having a program stored thereon, which when executed by a processor, implements the above-described compressor control method.
The embodiment of the invention provides a processor which is used for running a program, wherein the control method of the compressor is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes at least the following steps when executing the program:
step S101, a rotating speed set is obtained, wherein the rotating speed set comprises a plurality of preset rotating speeds which are increased in sequence;
step S102, controlling the compressor to operate at a plurality of preset rotating speeds which are sequentially increased in the rotating speed set respectively so as to execute an up-conversion action and obtain the phase current change rate of the compressor in the up-conversion process;
step S103, when the phase current change rate is greater than a predetermined threshold value, the rotation speed set is adjusted according to the phase current change rate so that the adjusted phase current change rate is less than or equal to the predetermined threshold value.
The device herein may be a server, PC, PAD, cell phone, etc.
The present application also provides a computer program product adapted to perform a program initialized with at least the following method steps when executed on a data processing device:
step S101, a rotating speed set is obtained, wherein the rotating speed set comprises a plurality of preset rotating speeds which are increased in sequence;
step S102, controlling the compressor to operate at a plurality of preset rotating speeds which are sequentially increased in the rotating speed set respectively so as to execute an up-conversion action and obtain the phase current change rate of the compressor in the up-conversion process;
step S103, when the phase current change rate is greater than a predetermined threshold value, the rotation speed set is adjusted according to the phase current change rate so that the adjusted phase current change rate is less than or equal to the predetermined threshold value.
In yet another exemplary embodiment of the present application, there is also provided a compressor system including a compressor and a controller of the compressor, wherein the controller of the compressor includes one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for performing any of the methods described above.
The compressor system comprises a compressor and a controller of the compressor, wherein the controller of the compressor comprises one or more processors, a memory and one or more programs, and the one or more programs comprise a control method for executing any one of the compressors. Compared with the prior art, the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor jumps to stop, the actual rotating speed of the compressor can be sequentially increased to a plurality of preset rotating speeds in the frequency increasing process, the graded adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed set is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed a preset threshold value, the effect of safe and quick frequency increasing is achieved, the problem that the compressor jumps to stop in the quick frequency increasing process due to the current flowing is avoided, the damage of the compressor caused by the jump is avoided, and the better performance of the compressor is ensured.
Specifically, as shown in fig. 4, the controller of the present application mainly comprises a phase current detection and calculation module 100, a compressor rotation speed overall control module 101, and a compressor rotation speed module 102, wherein the phase current detection and calculation module 100 is mainly used for detecting a phase current value of the compressor 103, recording the phase current value, and then calculating to obtain a phase current change rate a, for example, the phase current of the last sampling period is i 0 Time interval T s Post-sampled phase current i 1 Rate of change of phase current
Figure BDA0003687055580000101
The overall control module 101 for the rotational speed of the compressor is mainly used for controlling the rapid frequency rising of the compressor 103, and preventing the current from flowing and the compressor from stopping in a jump manner in the rapid frequency rising process.
The application also provides an air conditioner comprising the compressor system.
The air conditioner comprises a compressor system, wherein the controller is used for executing any control method of the compressor to control the frequency raising action of the compressor. Compared with the prior art, the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor jumps to stop, the actual rotating speed of the compressor in the air conditioner can be sequentially increased to a plurality of preset rotating speeds in the frequency increasing process, the gradual adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed concentration is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed the preset threshold value, the effect of safe and rapid frequency increasing is achieved, the problem that the compressor jumps to stop in the rapid frequency increasing process due to the current flowing is avoided, the damage of the compressor caused by stopping is avoided, the good performance of the compressor is ensured, and the good performance of the whole air conditioner is ensured.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units may be a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
1) In the control method of the compressor, firstly, a rotating speed set comprising a plurality of preset rotating speeds which are increased in sequence is obtained, then, the compressor is controlled to operate at the preset rotating speeds which are increased in sequence respectively to execute frequency-increasing action, the phase current change rate of the compressor in the frequency-increasing process is obtained, and finally, when the phase current change rate is larger than a preset threshold value, the rotating speed set is adjusted according to the phase current change rate, so that the adjusted phase current change rate is smaller than or equal to the preset threshold value. Compared with the prior art, the method has the advantages that the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor is jumped and stopped, the actual rotating speed is sequentially increased to a plurality of preset rotating speeds in the frequency increasing process of the compressor, the graded adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed set is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed a preset threshold value, the effect of safe and rapid frequency increasing is achieved, the problem that the compressor is jumped and stopped in the rapid frequency increasing process due to the current flows is avoided, the damage of the compressor caused by the jumped and stopped is avoided, and the better performance of the compressor is ensured;
2) In the control device of the compressor, the acquisition unit is used for acquiring the rotating speed set comprising a plurality of preset rotating speeds which are sequentially increased, the control unit is used for controlling the compressor to respectively run at the plurality of preset rotating speeds which are sequentially increased so as to execute the frequency-increasing action, the phase current change rate of the compressor in the frequency-increasing process is acquired, and the adjustment unit is used for adjusting the rotating speed set according to the phase current change rate when the phase current change rate is greater than a preset threshold value so that the adjusted phase current change rate is smaller than or equal to the preset threshold value. Compared with the prior art, the method has the advantages that the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor is jumped and stopped, the actual rotating speed is sequentially increased to a plurality of preset rotating speeds in the frequency increasing process of the compressor, the graded adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed set is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed a preset threshold value, the effect of safe and rapid frequency increasing is achieved, the problem that the compressor is jumped and stopped in the rapid frequency increasing process due to the current flows is avoided, the damage of the compressor caused by the jumped and stopped is avoided, and the better performance of the compressor is ensured;
3) The compressor system comprises a compressor and a controller of the compressor, wherein the controller of the compressor comprises one or more processors, a memory and one or more programs, and the one or more programs comprise a control method for executing any one of the compressors. Compared with the prior art, the method has the advantages that the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor is jumped and stopped, the actual rotating speed is sequentially increased to a plurality of preset rotating speeds in the frequency increasing process of the compressor, the graded adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed set is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed a preset threshold value, the effect of safe and rapid frequency increasing is achieved, the problem that the compressor is jumped and stopped in the rapid frequency increasing process due to the current flows is avoided, the damage of the compressor caused by the jumped and stopped is avoided, and the better performance of the compressor is ensured;
4) The air conditioner comprises a compressor system, wherein the controller is used for executing any control method of the compressor to control the frequency raising action of the compressor. Compared with the prior art, the rotating speed of the compressor is increased from 0 to higher rotating speed in a short time, so that the current flows and the compressor jumps to stop, the actual rotating speed of the compressor in the air conditioner can be sequentially increased to a plurality of preset rotating speeds in the frequency increasing process, the gradual adjustment and the sectional lifting of the rotating speed are realized, the phase current change of the compressor can be obtained in the frequency increasing process, the preset rotating speed in the rotating speed concentration is adjusted according to the phase current change rate, the adjusted phase current change rate does not exceed the preset threshold value, the effect of safe and rapid frequency increasing is achieved, the problem that the compressor jumps to stop in the rapid frequency increasing process due to the current flowing is avoided, the damage of the compressor caused by stopping is avoided, the good performance of the compressor is ensured, and the good performance of the whole air conditioner is ensured.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (9)

1. A control method of a compressor, comprising:
acquiring a rotating speed set, wherein the rotating speed set comprises a plurality of preset rotating speeds which are sequentially increased;
controlling the compressors to respectively run at a plurality of preset rotating speeds which are concentrated and sequentially increased in the rotating speed so as to execute the frequency-increasing action and obtain the phase current change rate of the compressors in the frequency-increasing process;
in the case where the phase current change rate is greater than a predetermined threshold value, adjusting the rotation speed set according to the phase current change rate such that the adjusted phase current change rate is less than or equal to the predetermined threshold value,
when the phase current change rate is greater than a predetermined threshold, adjusting the rotation speed set according to the phase current change rate so that the adjusted phase current change rate is less than or equal to the predetermined threshold, including:
Under the condition that the phase current change rate is larger than the preset threshold value, determining a transition rotating speed at least according to a first preset rotating speed, increasing the transition rotating speed to a position between a second preset rotating speed and the first preset rotating speed to obtain a new rotating speed set, controlling the compressor to continuously execute the frequency-increasing action according to the new rotating speed set so as to enable the phase current change rate in the frequency-increasing process to be smaller than or equal to the preset threshold value,
the first preset rotating speed is the preset rotating speed to which the compressor is currently required to be increased, the second preset rotating speed is the preset rotating speed which is adjacent to the first preset rotating speed in the rotating speed set and is smaller than the first preset rotating speed, or the second preset rotating speed is the initial rotating speed before the compressor executes the frequency increasing action, and the transition rotating speed is smaller than the first preset rotating speed and is larger than the second preset rotating speed.
2. The method according to claim 1, wherein, in the case where the phase current change rate is greater than the predetermined threshold, increasing a transition rotational speed between a second predetermined rotational speed and the first predetermined rotational speed according to at least a first predetermined rotational speed, to obtain a new set of rotational speeds, and controlling the compressor to continue the frequency-increasing operation according to the new set of rotational speeds, so that the phase current change rate during the frequency-increasing operation is less than or equal to the predetermined threshold, comprises:
An acquisition step of determining a transition rotational speed and increasing the transition rotational speed to a value between the second predetermined rotational speed and the first predetermined rotational speed according to at least the first predetermined rotational speed in the case where the phase current change rate is larger than the predetermined threshold value, to obtain a new rotational speed set;
a control step of controlling the compressor to continue to operate at a plurality of predetermined rotational speeds which are sequentially increased in a new rotational speed set, respectively, from the transition rotational speed;
a determining step of determining whether the phase current change rate in the frequency raising process is greater than the predetermined threshold;
and a circulation step of sequentially executing the acquisition step, the control step and the determination step at least once until the actual rotation speed of the compressor reaches the preset rotation speed with the maximum rotation speed concentration.
3. The method of claim 1, wherein determining the transition speed based at least on the first predetermined speed comprises:
acquiring a first preset multiple and the first preset rotating speed, wherein the first preset multiple is more than 0 and less than 1;
multiplying the first preset multiple by the first preset rotating speed to obtain the transition rotating speed.
4. A method according to any one of claims 1 to 3, wherein obtaining the phase current change rate of the compressor during the up-conversion comprises:
and in the frequency raising process, the phase current change rate is obtained every a preset time.
5. A method according to any one of claims 1 to 3, wherein obtaining a set of rotational speeds comprises:
obtaining a second preset multiple and the final rotating speed of the compressor in the frequency raising process;
according to W n ＝W n-1 +(W N N) to obtain a plurality of preset rotating speeds, wherein N is the second preset multiple, W N For the final rotation speed, W n For the predetermined rotational speed other than the final rotational speed, W n-1 Is W and n adjacent and less than W n N is more than 1 and less than or equal to N;
and arranging a plurality of preset rotating speeds in sequence from small to large to obtain the rotating speed set.
6. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 5.
7. A processor for running a program, wherein the program when run performs the method of any one of claims 1 to 5.
8. A compressor system, comprising:
a compressor;
a controller of the compressor comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of any of claims 1-5.
9. An air conditioner comprising the compressor system of claim 8.
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