CN113251641A - Compressor control method, compressor control device, compressor control apparatus, storage medium, and program product - Google Patents

Compressor control method, compressor control device, compressor control apparatus, storage medium, and program product Download PDF

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Publication number
CN113251641A
CN113251641A CN202110484414.6A CN202110484414A CN113251641A CN 113251641 A CN113251641 A CN 113251641A CN 202110484414 A CN202110484414 A CN 202110484414A CN 113251641 A CN113251641 A CN 113251641A
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China
Prior art keywords
compressor
voltage value
bus
rotating speed
value
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Pending
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CN202110484414.6A
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Chinese (zh)
Inventor
张飞
高保华
吴洪金
谭强
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202110484414.6A priority Critical patent/CN113251641A/en
Publication of CN113251641A publication Critical patent/CN113251641A/en
Priority to PCT/CN2021/131564 priority patent/WO2022227508A1/en
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • 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
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/15—Power, e.g. by voltage or current
    • F25B2700/151—Power, e.g. by voltage or current of the compressor motor
    • 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
    • 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
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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

Abstract

The embodiment of the application provides a control method, a control device, equipment, a storage medium and a program product of a compressor, wherein the method comprises the following steps: acquiring a first voltage value of a bus included in a control circuit of a compressor; if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value, acquiring a first rotating speed of the compressor; determining a target rotating speed of the compressor according to the difference value and the first rotating speed; and controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit. The control method, apparatus, device, storage medium and program product of the compressor can be used for preventing the electrolytic capacitor from being broken down.

Description

Compressor control method, compressor control device, compressor control apparatus, storage medium, and program product
Technical Field
The embodiment of the application relates to the technical field of compressor control, in particular to a control method, a control device, control equipment, a storage medium and a program product of a compressor.
Background
At present, an air conditioner is generally provided with a control circuit, and a user of the control circuit controls a compressor to work so as to realize functions of shutdown, defrosting and the like of the air conditioner.
In the prior art, a control circuit is shown in fig. 1, and the control circuit includes: the Power Factor Correction (PFC) circuit, the electrolytic capacitor, the Intelligent Power Module (IPM), the compressor Unit, and the Micro-controller Unit (MCU) include a compressor. The PFC circuit, the electrolytic capacitor, the IPM and the compressor unit are sequentially connected, and the MCU is respectively connected with the PFC circuit and the IPM. The MCU acquires first working parameters of the compressor according to the IPM, determines a reverse voltage value generated by the compressor, if the reverse voltage value is large, the voltage value of the bus is larger than the withstand voltage value of the electrolytic capacitor, so that the electrolytic capacitor is broken down, when the MCU determines that the reverse voltage value is large, the MCU normally changes second working parameters of the PFC circuit through weak magnetic control, the reverse voltage value is reduced, and the electrolytic capacitor is prevented from being broken down.
During the process of the MCU performing the field weakening control, the PFC circuit may be in a critical state of an off state and an operating state. When the PFC circuit is in a critical state of an off state and an operating state, the reverse voltage value can still be larger in a short time, so that the voltage value of the bus is larger than or equal to the withstand voltage value of the electrolytic capacitor, and the electrolytic capacitor is broken down.
In addition, with the compressor becoming more and more efficient, the reverse voltage value that the compressor produced is higher and higher, leads to the compressor control degree of difficulty to be bigger and bigger, based on the technical development of compressor and the problem that the voltage value of generating line among the prior art reaches electrolytic capacitor's withstand voltage value, the application provides a control method of compressor.
Disclosure of Invention
The embodiment of the application provides a control method, a control device, equipment, a storage medium and a program product of a compressor, which are used for preventing an electrolytic capacitor from being broken down.
In a first aspect, an embodiment of the present application provides a control method for a compressor, including:
acquiring a first voltage value of a bus included in a control circuit of a compressor;
if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value, acquiring a first rotating speed of the compressor;
determining a target rotating speed of the compressor according to the difference value and the first rotating speed;
and controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
In one possible design, determining a target speed of the compressor based on the difference and the first speed includes:
determining the ratio of the product of the difference value and the preset rotating speed of the compressor to the preset reverse voltage value as the rotating speed to be reduced of the compressor; the preset reverse voltage value is a reverse voltage value generated when the compressor rotates according to a preset rotating speed;
and determining the difference value between the first rotating speed and the rotating speed to be reduced as a target rotating speed.
In another possible design, obtaining a first voltage value of a bus included in a control circuit of the compressor includes:
acquiring a second voltage value of the bus and a second rotating speed of the compressor;
if the second voltage value is larger than a second preset value, controlling the second rotating speed to be reduced, so that the voltage value of the bus is within an alarm range; the warning range is a voltage range which is larger than a first preset value and smaller than or equal to a second preset value;
and determining the voltage value of the bus in the warning range as a first voltage value.
In another possible design, obtaining a first voltage value of a bus included in a control circuit of the compressor includes:
acquiring a to-be-operated state of a compressor;
and if the to-be-operated state is one of a plurality of preset states, acquiring a first voltage value of the bus.
In another possible design, after controlling the compressor to rotate at the target rotation speed, the method further includes:
and if the adjusted voltage value of the bus is less than or equal to the second preset value, controlling the compressor to execute the operation corresponding to the working state.
In another possible design, before obtaining the standby state of the compressor, the method further includes:
acquiring a second voltage value of the bus and a second rotating speed of the compressor;
if the second voltage value is larger than a second preset value, controlling the second rotating speed to be reduced, so that the voltage value of the bus is within an alarm range; the warning range is a voltage range which is larger than the first preset value and smaller than or equal to the second preset value.
In a second aspect, an embodiment of the present application provides a control apparatus for a compressor, including: the device comprises a first acquisition module, a second acquisition module, a determination module and a control module; wherein the content of the first and second substances,
the first acquisition module is used for acquiring a first voltage value of a bus included in a control circuit of the compressor;
the second obtaining module determining module is used for obtaining a first rotating speed of the compressor if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value;
the determining module is used for determining the target rotating speed of the compressor according to the difference value and the first rotating speed;
and the control module is used for controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
In one possible design, the determining module is specifically configured to:
determining the ratio of the product of the difference value and the preset rotating speed of the compressor to the preset reverse voltage value as the rotating speed to be reduced of the compressor; the preset reverse voltage value is a reverse voltage value generated when the compressor rotates according to a preset rotating speed;
and determining the difference value between the first rotating speed and the rotating speed to be reduced as a target rotating speed.
In another possible design, the first obtaining module is specifically configured to:
acquiring a second voltage value of the bus and a second rotating speed of the compressor;
if the second voltage value is larger than a second preset value, controlling the second rotating speed to be reduced, so that the voltage value of the bus is within an alarm range; the warning range is a voltage range which is larger than a first preset value and smaller than or equal to a second preset value;
and determining the voltage value of the bus in the warning range as a first voltage value.
In another possible design, the first obtaining module is specifically configured to:
acquiring a to-be-operated state of a compressor;
and if the to-be-operated state is one of a plurality of preset states, acquiring a first voltage value of the bus.
In another possible design, after controlling the compressor to rotate at the target speed, the control module is further configured to:
and if the adjusted voltage value of the bus is less than or equal to the second preset value, controlling the compressor to execute the operation corresponding to the working state.
In another possible design, before the state of readiness of the compressor is obtained,
the first acquisition module is also used for acquiring a second voltage value of the bus;
the second acquisition module is also used for acquiring a second rotating speed of the compressor;
the control module is further used for controlling the second rotating speed to be reduced if the second voltage value is larger than a second preset value, so that the voltage value of the bus is within an alarm range; the warning range is a voltage range which is larger than the first preset value and smaller than or equal to the second preset value.
In a third aspect, an embodiment of the present application provides a household appliance, including: a processor and a memory;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored in the memory, so that the processor performs the control method of the compressor according to any one of the above first aspects.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer executes instructions, and when a processor executes the computer executes the instructions, the method for controlling a compressor according to any one of the above first aspects is implemented.
In a fifth aspect, the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for controlling a compressor according to any one of the above first aspects is implemented.
The embodiment of the application provides a control method, a control device, equipment, a storage medium and a program product of a compressor, wherein the method comprises the following steps: acquiring a first voltage value of a bus included in a control circuit of a compressor; if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value, acquiring a first rotating speed of the compressor; determining a target rotating speed of the compressor according to the difference value and the first rotating speed; and controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit. In the method, the target rotating speed is determined according to the difference value and the first rotating speed, and then the compressor is controlled to rotate according to the target rotating speed, so that the reverse voltage value generated by the compressor can be reduced, the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor, and the electrolytic capacitor is prevented from being broken down.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a control circuit according to an embodiment of the present disclosure;
fig. 2 is a first flowchart illustrating a control method of a compressor according to an embodiment of the present disclosure;
fig. 3 is a second flowchart illustrating a control method of a compressor according to an embodiment of the present disclosure;
fig. 4 is a third schematic flowchart of a control method of a compressor according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of voltage ranges provided by an embodiment of the present application;
fig. 6 is a schematic structural diagram of a control device of a compressor according to an embodiment of the present disclosure;
fig. 7 is a schematic hardware structure diagram of a household appliance according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of a control circuit according to an embodiment of the present disclosure. As shown in fig. 1, the home appliance includes: a control circuit and a compressor unit. The control circuit is connected with the compressor unit. The control circuit is used to control the operation of the compressor included in the compressor unit. During operation of the compressor, functions of the household appliance are realized, such as: shutdown, defrosting, refrigerating, heating and the like.
The control circuit includes: the device comprises a rectification circuit, an inductor, a current sampling unit, a PFC circuit, an electrolytic capacitor, a voltage sampling unit, an IPM and an MCU. The rectification circuit is sequentially connected with the PFC circuit, the electrolytic capacitor, the voltage sampling unit, the IPM and the compressor unit through the inductor and the current sampling unit respectively, and the MCU is connected with the current sampling unit, the PFC circuit, the voltage sampling unit and the IPM respectively.
The rectification circuit is used for receiving alternating current, rectifying the alternating current to obtain first direct current, and providing the first direct current for the inductor and the PFC circuit.
The inductor and the PFC circuit are used for carrying out voltage boosting treatment on the first direct current to obtain a second direct current and providing the second direct current for the electrolytic capacitor. The voltage value of the second direct current is larger than that of the first direct current.
The electrolytic capacitor is used for filtering the second direct current to obtain a third direct current and providing the third direct current for the IPM. The third direct current is single-phase direct current.
The IPM is used for converting the third direct current to obtain a three-phase direct current and providing the three-phase direct current for the compressor unit; the system comprises a MCU, a first working parameter acquisition unit, a second working parameter acquisition unit, a first working parameter acquisition unit and a second working parameter acquisition unit, wherein the MCU is used for acquiring a first working parameter of a compressor and providing the first working parameter to the MCU in the working process of a compressor unit; and the MCU is also used for receiving a third working parameter provided by the MCU and controlling the compressor to execute corresponding operation according to the third working parameter.
And the compressor in the compressor unit is used for executing corresponding operation according to a third working parameter by adopting three-phase direct current to realize the functions of the household appliance.
The current sampling unit is used for sampling the current of the first direct current to obtain a current value and providing the current value of the bus for the MCU.
The voltage sampling unit is used for sampling the voltage of the bus to obtain a voltage value and providing the voltage value of the bus to the MCU.
In practical application, in the process that the compressor is used for adopting three-phase direct current and executing corresponding operation according to the third working parameter, the compressor can generate a reverse voltage value, if the reverse voltage value is larger, the voltage value of the bus is larger than the withstand voltage value of the electrolytic capacitor, and the electrolytic capacitor is broken down.
Therefore, in the prior art, in the process that the compressor is used for executing corresponding operation according to the third working parameter by adopting three-phase direct current, the IPM obtains the first working parameter of the compressor and provides the first working parameter to the MCU; the MCU determines a reverse voltage value generated by the compressor according to the first working parameter, and if the reverse voltage value is larger, the MCU changes a second working parameter of the PFC circuit through weak magnetic control, so that the reverse voltage value is reduced, and the electrolytic capacitor is prevented from being broken down. In the above prior art, during the process of performing the field weakening control by the MCU, the PFC circuit may be in a critical state of an off state and an operating state, and when the PFC circuit is in the critical state of the off state and the operating state, the reverse voltage value may still be large in a short time, so that the voltage value of the bus is greater than or equal to the withstand voltage value of the electrolytic capacitor, which causes the electrolytic capacitor to be broken down.
Since the MCU performs field weakening control in the prior art, the PFC circuit can be in a critical state of an off state and a working state, so that the electrolytic capacitor is broken down. Thus, in the present application, the inventors thought: if the reverse voltage value is not reduced through weak magnetic control, the possibility that the PFC circuit is in a critical state of a turn-off state and a working state can be avoided, and the electrolytic capacitor is prevented from being broken down; further, for the purpose of achieving reduction of the reverse voltage value without the field weakening control, the inventors thought that: when the voltage value of the bus is larger, the reverse voltage value generated by the compressor is reduced by controlling the reduction of the rotating speed of the compressor, and the electrolytic capacitor is prevented from being broken down.
The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 2 is a first flowchart illustrating a control method of a compressor according to an embodiment of the present disclosure. As shown in fig. 2, the method includes:
s201, acquiring a first voltage value of a bus included in a control circuit of the compressor.
Optionally, the execution subject implemented in the present application is a processor (e.g., the MCU in fig. 1) in the control circuit, and may also be a control device disposed in the processor, where the control device may be implemented by software. The following describes a control method of a compressor according to the present application, taking an execution body as an example of a processor in a control circuit.
The control circuit of the compressor is shown in fig. 1, and will not be described herein.
Specifically, the voltage of the bus is collected through a voltage sampling unit in the control circuit, and a first voltage value is obtained. Illustratively, the voltage sampling unit may be a voltage sensor.
S202, if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value, acquiring a first rotating speed of the compressor.
It should be noted that the first rotation speed of the compressor is determined according to the operating parameters of the compressor acquired by IPM acquisition when the first voltage value is acquired. Specifically, the process of determining the first rotation speed according to the operating parameters of the compressor acquired by IPM may refer to the prior art, and is not described herein again.
In the present application, the unit of the rotation speed may be: rotate per minute.
And S203, determining the target rotating speed of the compressor according to the difference and the first rotating speed.
The first preset value is a lower limit of the warning range, and for the description of the first preset value and the warning range, please refer to the embodiment of fig. 5, which will not be described in detail herein.
Specifically, the difference between the first voltage value and the first preset value is equal to U ═ Ux1-U1. Wherein U is a difference value, Ux1Is a first voltage value with a first preset value of U1。
In the present application, U is greater than or equal to a preset threshold value, indicating that the first voltage value is in an unsafe range (e.g., an alert range), where it is necessary to control the reduction of the rotation speed of the compressor.
In one possible design, the ratio of the product of the difference value U and the preset rotating speed of the compressor to the preset reverse voltage value is determined as the rotating speed to be reduced of the compressor; the preset reverse voltage value is a reverse voltage value generated when the compressor rotates according to a preset rotating speed;
and determining the difference value between the first rotating speed and the rotating speed to be reduced as a target rotating speed.
Specifically, the rotation speed to be reduced can be determined by the following formula 1:
Figure BDA0003049734530000071
wherein R isXRe is the preset rotating speed and Ke is the preset reverse voltage value for the rotating speed to be reduced.
Illustratively, Re may be equal to 1000, 2000, etc., and Ke may be equal to 60, 70, 80, etc.
Specifically, the target rotational speed may be determined by the following equation 2:
R＝R0-RXformula 2;
wherein R is the target rotation speed, R0Is the first rotation speed.
S204, controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, and enabling the voltage value of the bus to be smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
It should be noted that, when the compressor is controlled to rotate at the target rotation speed, the reverse voltage value generated by the compressor can be determined by the following formula 3:
Figure BDA0003049734530000081
wherein, UdThe value of the reverse voltage generated by the compressor.
Specifically, control information including the target rotation speed is transmitted to the IPM, so that the IPM controls the compressor to rotate at the target rotation speed according to the control information.
When the compressor rotates according to the target rotating speed, the reverse voltage value generated by the compressor can be reduced, so that the voltage of the bus is adjusted, the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor, and the electrolytic capacitor is prevented from being broken down.
The control method of the compressor provided by the embodiment of FIG. 2 comprises the following steps: acquiring a first voltage value of a bus included in a control circuit of a compressor; if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value, acquiring a first rotating speed of the compressor; determining a target rotating speed of the compressor according to the difference value and the first rotating speed; and controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit. In the method, the difference value between the first voltage value and the first preset value is greater than or equal to the preset threshold value, the first voltage value is considered to be larger, when the first voltage value is larger, the target rotating speed is determined according to the difference value and the first rotating speed, the compressor is further controlled to rotate according to the target rotating speed, the reverse voltage value generated by the compressor can be reduced, the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor, and the electrolytic capacitor is prevented from being broken down.
It should be noted that, because the working parameters of the PFC circuit are not changed by the field weakening control of the processor, the PFC circuit is not in the critical state of the off state and the working state, and the electrolytic capacitor can be prevented from being broken down.
On the basis of the above embodiment, the control method provided by the embodiment of the present application is further described below with reference to fig. 3, specifically, refer to the embodiment of fig. 3.
Fig. 3 is a second flowchart illustrating a control method of a compressor according to an embodiment of the present application. As shown in fig. 3, the method includes:
and S301, acquiring a second voltage value of the bus and a second rotating speed of the compressor.
And the second voltage value is obtained by carrying out voltage acquisition on the bus through the voltage acquisition unit.
And acquiring a second rotating speed of the compressor when the voltage value of the bus is equal to the second voltage value.
S302, whether the second voltage value is larger than a second preset value or not is judged.
If not, go to S303.
If yes, S304-S309 are executed.
And the second preset value is the upper limit value of the warning range. For the description of the second preset value and the warning range, please refer to the embodiment of fig. 5, which will not be described in detail herein.
Specifically, the second preset value is generally smaller than the withstand voltage value of the electrolytic capacitor. In this application, the voltage value is expressed in volts, abbreviated as V.
Illustratively, the withstand voltage value of the electrolytic capacitor is 450, and the second preset value can be 430, 420, etc. which are less than 450.
And S303, controlling the compressor to rotate at the second rotating speed.
And when the second rotating speed is acquired to obtain a second voltage value, the second rotating speed is determined according to the working parameters of the compressor acquired by IPM.
And S304, controlling the second rotating speed of the compressor to be reduced so that the voltage value of the bus is in an alarm range.
The warning range is a voltage range which is larger than the first preset value and smaller than or equal to the second preset value.
Specifically, the second rotation speed of the compressor may be reduced by a preset step length. Illustratively, the preset steps may be 60 revolutions per minute, 180 revolutions per minute, 300 revolutions per minute, etc.
Next, the second rotation speed is reduced so that the voltage value of the bus is within the warning range, taking the preset step length as an example 180.
Alternatively, the voltage value of the bus within the warning range may be: the voltage value of the bus is firstly in the warning range, the voltage value of the bus is secondly in the warning range, … …, and the voltage value of the bus is firstly in any one of the warning ranges.
For example, when the voltage value of the bus is in the warning range, which is the first time the voltage value of the bus is in the warning range, and when the second rotation speed is 800, within 4 preset time periods (respectively: a first preset time period, a second preset time period, a third preset time period, and a fourth preset time period) after the current time, if the second rotation speed is controlled to be reduced by 180 (then equal to 720) within the first preset time period, the voltage value of the bus is within the warning range, the rotation speed (720) is controlled to be reduced by 180 (then equal to 540) within the second preset time period, the voltage value of the bus is within the warning range, the rotation speed (540) is controlled to be reduced by 180 (then equal to 360) within the third preset time period, the voltage value of the bus is within the warning range, the rotation speed (360) is controlled to be reduced by 180 (then equal to 180) within the fourth preset time period, the voltage value of the bus is within the safety range, and the voltage value of the bus is within the warning range, and if the voltage value of the bus is within the second preset time period, the rotation speed (720) is controlled to be reduced by 180 (then equal to be reduced by 180 within the second preset time period And then the voltage value of the bus is in the warning range.
Alternatively, the preset time period may be greater than or equal to 1 minute.
Illustratively, controlling the rotational speed (720) to decrease by 180 (and thereafter equal to 540) for a second predetermined period of time, such as a second predetermined period of time, when the predetermined period of time is 1.5 minutes includes: the speed 720 is controlled to decrease by 180 in 1 minute and the compressor is controlled to rotate at speed 540 for the remaining 0.5 minutes to obtain a stable second voltage value.
S305, determining the voltage of the bus within the warning range as a first voltage value.
S306, acquiring a first rotating speed of the compressor.
S307, whether the difference value of the first voltage value and the first preset value is larger than or equal to a preset threshold value is judged.
If not, go to S308.
If yes, S309-S310 are executed.
And S308, controlling the compressor to rotate at the first rotating speed.
Illustratively, when the voltage value of the bus is in the warning range, which is the first time the voltage value of the bus is in the warning range, the first rotating speed is 540 accordingly on the basis of S304. Further, the compressor is controlled to rotate at a first rotational speed 540.
Alternatively, S306 may be performed after S307 and before S308.
S309, determining the target rotating speed of the compressor according to the difference value and the first rotating speed.
Alternatively, S306 may be performed after S307 and before S309.
And S310, controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
Specifically, the execution process of S309 to S310 is similar to the execution process of S202 to S203, and the execution method of S309 to S310 is not described herein again.
The present application is different from the prior art. In the prior art, when the voltage value of the bus is high, overvoltage shutdown may be caused (that is, if the processor determines that the voltage value of the bus is too high according to the voltage value acquired by the voltage sampling unit, the operation of the compressor may be stopped by IPM control), so that the operation of the compressor may be interrupted. In the application, if the second voltage value is greater than the second preset value, the rotating speed of the compressor is controlled to be reduced, so that the voltage value of the bus is within the warning range, the problem of overvoltage shutdown can be avoided, and the compressor can work continuously.
The control method provided by the embodiment of fig. 3 includes: acquiring a second voltage value of the bus and a second rotating speed of the compressor; if the second voltage value is larger than a second preset value, controlling the second rotating speed of the compressor to be reduced so as to enable the voltage value of the bus to be within an alarm range; determining the voltage of a bus within the warning range as a first voltage value; acquiring a first rotating speed of the compressor when the voltage value of the bus is a first voltage value; if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value, determining a target rotating speed of the compressor according to the difference value and the first rotating speed; and controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit. In the method, if the second voltage value is greater than the second preset value, the second rotating speed is controlled to be reduced, so that the voltage value of the bus is within an alarm range, the problem of overvoltage shutdown can be avoided, and the compressor can continuously work; furthermore, a target rotating speed is determined according to the difference value and the first rotating speed, the compressor is controlled to rotate according to the target rotating speed, and the reverse voltage value generated by the compressor can be reduced, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor, and the electrolytic capacitor is prevented from being broken down.
On the basis of the above embodiment, the following describes in detail the control method provided by the present application with reference to the embodiment of fig. 4, specifically, please refer to the embodiment of fig. 4.
Fig. 4 is a third flowchart illustrating a control method of a compressor according to an embodiment of the present application. As shown in fig. 4, the method includes:
s401, acquiring a second voltage value of the bus and a second rotating speed of the compressor.
S402, if the second voltage value is larger than a second preset value, controlling the second rotating speed to be reduced so that the voltage value of the bus is within an alarm range.
Specifically, the execution process of S401 to S402 is similar to the execution process of S301 to S304, and the execution method of S401 to S402 is not described herein again.
And S403, acquiring the standby working state of the compressor.
Specifically, working parameters of the compressor are obtained, wherein the working parameters comprise temperature and/or shutdown identification and the like; and determining the to-be-operated state of the compressor according to the operating parameters.
Alternatively, the temperature may be obtained after the temperature sensor in the IPM module performs a temperature collection point on the compressor, and the shutdown flag may be sent by the received control device (e.g., a remote controller, a control panel, etc.).
For example, if the temperature is lower than the preset temperature, the to-be-operated state is determined to be defrosting. For example, the preset temperature may be-20 degrees celsius, -30 degrees celsius, or the like. The specific value of the preset temperature is not limited herein.
For example, when the shutdown identifier is the preset identifier, it is determined that the to-be-operated state is shutdown. For example, the preset flag may be 0, 1, 00, etc. The specific identification form of the shutdown identification is not limited herein.
S404, judging whether the state to be worked is one of a plurality of preset states.
If not, go to S405.
If yes, S406-S409 are executed.
Illustratively, the plurality of preset states includes: defrost, shut down, etc.
S405, controlling the compressor to rotate at a third rotating speed; the third rotation speed is the rotation speed of the compressor after the second rotation speed is controlled to be reduced so that the voltage value of the bus is within the guard range.
Specifically, after S402 and before S405, the operating parameter of the compressor acquired by the IPM may be obtained, and the third rotation speed of the compressor may be determined according to the operating parameter of the compressor.
And S406, acquiring a first voltage value of the bus in the process that the compressor rotates at the third rotating speed.
S407, if the difference value between the first voltage value and the first preset value is greater than or equal to a preset threshold value, acquiring a first rotating speed of the compressor.
And S408, determining the target rotating speed of the compressor according to the difference value and the first rotating speed.
And S409, controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
Specifically, the execution process of S406 to S409 is the same as the execution process of S201 to S204, and the execution method of S406 to S409 is not described herein again.
And S410, if the adjusted voltage value of the bus is less than or equal to a second preset value, controlling the compressor to execute the operation corresponding to the waiting working state.
Specifically, the voltage value of the adjusted bus is acquired through the voltage acquisition unit, and whether the voltage value of the adjusted bus is smaller than or equal to a second preset value is judged; if so, the compressor executes the operation corresponding to the standby working state.
In the control method provided in the embodiment of fig. 4, if the second voltage value is greater than the second preset value, the second rotation speed is controlled to be reduced, so that the voltage value of the bus is within the warning range, thereby avoiding the problem of overvoltage shutdown, and enabling the compressor to continuously operate. When the to-be-operated state of the compressor is one of a plurality of preset states, acquiring a first voltage value of a bus, and if the difference value between the first voltage value and the first preset value is greater than or equal to a preset threshold value, determining the target rotating speed of the compressor according to the difference value; controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit; if the adjusted voltage value of the bus is smaller than or equal to the second preset value (namely the voltage value of the bus is in the safety range), the compressor is controlled to execute the operation corresponding to the waiting working state, and the electrolytic capacitor can be prevented from being broken down in the operation process corresponding to the waiting working state executed by the compressor.
Fig. 5 is a schematic diagram of voltage ranges provided by an embodiment of the present application. As shown in fig. 5, includes: an alert range and a safety range.
The lower limit value of the warning range is a first preset value, and the upper limit value of the warning range is a second preset value. The warning range is a voltage range which is larger than the first preset value and smaller than or equal to the second preset value.
The upper limit value of the safety range is a first preset value. The first preset value is smaller than the second preset value. The safety range is less than or equal to the first preset value
In one possible design, the method may further include: and (5) alarm range. The lower limit value of the alarm range is equal to the second preset value. The alarm range is a range larger than the second preset value. The withstand voltage value of the electrolytic capacitor is a value in the alarm range.
Optionally, in practical application, if the processor detects that the voltage value of the bus is greater than the second preset value and less than the withstand voltage value of the electrolytic capacitor after executing the control method provided by the present application, the processor may control to produce a first acousto-optic alarm message to prompt a user to execute a shutdown operation.
Optionally, in practical applications, if the processor detects that the voltage value of the bus is greater than or equal to the withstand voltage value of the electrolytic capacitor after executing the control method provided by the present application, the processor may control to produce second audible alarm information to provide that the user control circuit fails.
Optionally, the control circuit further comprises an alarm circuit, and when the voltage value of the bus is detected to be greater than the second preset value and smaller than the withstand voltage value of the electrolytic capacitor, the alarm circuit is provided with a first signal, so that the alarm circuit generates first acousto-optic alarm information; when the voltage value of the bus is detected to be larger than or equal to the withstand voltage value of the electrolytic capacitor, a second signal is provided for the alarm circuit, so that the alarm circuit generates second acousto-optic alarm information.
Fig. 6 is a schematic structural diagram of a control device of a compressor according to an embodiment of the present application. As shown in fig. 6, the control device 10 includes: the device comprises a first acquisition module 11, a second acquisition module 12, a determination module 13 and a control module 14; wherein the content of the first and second substances,
a first obtaining module 11, configured to obtain a first voltage value of a bus included in a control circuit of the compressor;
a second obtaining module 12, configured to obtain a first rotation speed of the compressor if a difference between the first voltage value and a first preset value is greater than or equal to a preset threshold;
a determining module 13, configured to determine a target rotation speed of the compressor according to the difference and the first rotation speed of the compressor;
and the control module 14 is used for controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
The control method provided by the embodiment of the present application can implement the technical solutions shown in the above method embodiments, and the implementation principles and beneficial effects are similar, which are not described herein again.
In one possible design, the determining module 13 is specifically configured to:
determining the ratio of the product of the difference value and the preset rotating speed of the compressor to the preset reverse voltage value as the rotating speed to be reduced of the compressor; the preset reverse voltage value is a reverse voltage value generated when the compressor rotates according to a preset rotating speed.
And determining the difference value between the first rotating speed and the rotating speed to be reduced as a target rotating speed.
In another possible design, the first obtaining module 11 is specifically configured to:
acquiring a second voltage value of the bus and a second rotating speed of the compressor;
if the second voltage value is larger than a second preset value, controlling the second rotating speed to be reduced, so that the voltage value of the bus is within an alarm range; the warning range is a voltage range which is larger than a first preset value and smaller than or equal to a second preset value;
and determining the voltage of the bus in the warning range as a first voltage value.
In another possible design, the first obtaining module 11 is specifically configured to:
acquiring a to-be-operated state of a compressor;
and if the to-be-operated state is one of a plurality of preset states, acquiring a first voltage value of the bus.
In another possible design, after controlling the compressor to rotate at the target speed, the control module 14 is further configured to:
and if the adjusted voltage value of the bus is less than or equal to the second preset value, controlling the compressor to execute the operation corresponding to the working state.
In another possible design, before the state of readiness of the compressor is obtained,
the first obtaining module 11 is further configured to obtain a second voltage value of the bus
A second acquisition module 12, also for a second rotation speed of the compressor;
the control module 14 is further configured to control the second rotation speed to decrease if the second voltage value is greater than a second preset value, so that the voltage value of the bus is within the warning range; the warning range is a voltage range which is larger than the first preset value and smaller than or equal to the second preset value.
The control method provided by the embodiment of the present application can implement the technical solutions shown in the above method embodiments, and the implementation principles and beneficial effects are similar, which are not described herein again.
Fig. 7 is a schematic hardware structure diagram of a household appliance according to an embodiment of the present application. As shown in fig. 7, the home appliance 20 includes: a memory 21 and a processor 22.
The memory 21 and the processor 22 are illustratively interconnected by a bus 23.
The memory 21 is used to store computer-executable instructions.
The processor 22 is configured to execute the computer-executable instructions stored in the memory 21, so that the processor 22 executes the control method of the compressor shown in any one of the above-mentioned method embodiments.
For the specific implementation process of the processor 22, reference may be made to the above method embodiments, which implement similar principles and technical effects, and this embodiment is not described herein again.
In the embodiment shown in fig. 7, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an MCU, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.
The memory may comprise high speed RAM memory and may also include non-volatile storage NVM, such as disk storage.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The application also provides a computer readable storage medium, wherein a computer executing instruction is stored in the computer readable storage medium, and when the processor executes the computer executing instruction, the control method of the compressor is realized.
The present application also provides a computer program product comprising a computer program which, when executed by a processor, implements a method of controlling a compressor as above.
All or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The aforementioned program may be stored in a readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape (magnetic tape), floppy disk (optical disk), and any combination thereof.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
In the present application, the terms "include" and variations thereof may refer to non-limiting inclusions; the term "or" and variations thereof may mean "and/or". The terms "first," "second," and the like in this application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. In the present application, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "three types" generally indicates that the former and latter associated objects are in a relationship of one or.

Claims (10)

1. A control method of a compressor, characterized by comprising:
acquiring a first voltage value of a bus included in a control circuit of a compressor;
if the difference value between the first voltage value and the first preset value is larger than or equal to a preset threshold value, acquiring a first rotating speed of the compressor;
determining a target rotating speed of the compressor according to the difference value and the first rotating speed;
and controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
2. The method of claim 1, wherein said determining a target speed of said compressor based on said difference and said first speed comprises:
determining the ratio of the product of the difference value and the preset rotating speed of the compressor to a preset reverse voltage value as the rotating speed to be reduced of the compressor; the preset reverse voltage value is a reverse voltage value generated when the compressor rotates according to the preset rotating speed;
and determining the difference value between the first rotating speed and the rotating speed to be reduced as the target rotating speed.
3. The method according to claim 1 or 2, wherein said obtaining a first voltage value of a bus comprised in a control circuit of a compressor comprises:
acquiring a second voltage value of the bus and a second rotating speed of the compressor;
if the second voltage value is larger than a second preset value, controlling the second rotating speed to be reduced, so that the voltage value of the bus is within an alarm range; the warning range is a voltage range which is larger than the first preset value and smaller than or equal to the second preset value;
and determining the voltage value of the bus in the warning range as the first voltage value.
4. The method according to claim 1 or 2, wherein said obtaining a first voltage value of a bus comprised in a control circuit of a compressor comprises:
acquiring a to-be-operated state of the compressor;
and if the to-be-operated state is one of a plurality of preset states, acquiring a first voltage value of the bus.
5. The method as claimed in claim 4, wherein after controlling the compressor to rotate at the target rotation speed, the method further comprises:
and if the adjusted voltage value of the bus is smaller than or equal to a second preset value, controlling the compressor to execute the operation corresponding to the to-be-operated state.
6. The method according to claim 4 or 5, characterized in that, before said obtaining the state of readiness of the compressor, it further comprises:
acquiring a second voltage value of the bus and a second rotating speed of the compressor;
if the second voltage value is larger than a second preset value, controlling the second rotating speed to be reduced, so that the voltage value of the bus is within an alarm range; the warning range is a voltage range which is larger than the first preset value and smaller than or equal to the second preset value.
7. A control apparatus of a compressor, characterized by comprising: the device comprises a first acquisition module, a second acquisition module, a determination module and a control module; wherein the content of the first and second substances,
the first acquisition module is used for acquiring a first voltage value of a bus included in a control circuit of the compressor;
the second obtaining module is configured to obtain a first rotating speed of the compressor if a difference between the first voltage value and a first preset value is greater than or equal to a preset threshold;
the determining module is used for determining the target rotating speed of the compressor according to the difference value and the first rotating speed;
and the control module is used for controlling the compressor to rotate according to the target rotating speed so as to adjust the voltage of the bus, so that the voltage value of the bus is smaller than the withstand voltage value of the electrolytic capacitor included in the control circuit.
8. A household appliance, characterized in that it comprises: a processor and a memory;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored in the memory, so that the processor performs the control method of the compressor according to any one of claims 1 to 6.
9. A computer-readable storage medium having stored therein computer-executable instructions which, when executed by a processor, implement a method of controlling a compressor according to any one of claims 1 to 6.
10. A computer program product, characterized in that it comprises a computer program which, when being executed by a processor, implements a method for controlling a compressor according to any one of claims 1 to 6.
CN202110484414.6A 2021-04-30 2021-04-30 Compressor control method, compressor control device, compressor control apparatus, storage medium, and program product Pending CN113251641A (en)

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