CN113375379A - Starting control method and device of variable frequency compressor and refrigeration equipment - Google Patents
Starting control method and device of variable frequency compressor and refrigeration equipment Download PDFInfo
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- CN113375379A CN113375379A CN202110645547.7A CN202110645547A CN113375379A CN 113375379 A CN113375379 A CN 113375379A CN 202110645547 A CN202110645547 A CN 202110645547A CN 113375379 A CN113375379 A CN 113375379A
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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
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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Abstract
The invention discloses a starting control method and device of a variable frequency compressor and refrigeration equipment. The method comprises the following steps: controlling to start the variable frequency compressor based on the parameter value of the parameter set; the parameter set comprises three parameters of positioning current, open-loop current and positioning time, and each parameter value of the parameter set is less than or equal to the respective rated maximum value; if the starting of the variable frequency compressor fails, adjusting at least one of the values of the three parameters which is smaller than the rated maximum value of the variable frequency compressor to be the rated maximum value of the variable frequency compressor, and restarting the variable frequency compressor based on the adjusted parameter values of the parameter set until the starting is successful. The method controls the starting of the variable frequency compressor by selecting the set value corresponding to at least one of the positioning current, the open loop current and the positioning time, reduces the electric quantity consumption of the variable frequency compressor during the starting to a great extent, and improves the energy efficiency.
Description
Technical Field
The invention relates to the field of electrical equipment, in particular to a starting control method and device of a variable frequency compressor and refrigeration equipment.
Background
The temperature range of the working environment of the variable frequency refrigerator is from-5 ℃ to 43 ℃, the temperature range is wide, the load change is large, and the current of the variable frequency compressor is designed to be large during starting so as to ensure the successful starting of the compressor.
FIG. 1 is a current waveform of one phase of U, V, W three-phase current started by a frequency conversion compressor of a refrigerator in the prior art. The general compressor start-up procedure is shown in fig. 1: the method comprises three parts of rotor position determination (positioning stage in the figure), asynchronous dragging open-loop operation (open-loop stage in the figure) and switching from an open-loop state to closed-loop stable operation (closed-loop stage in the figure).
In the above starting process, the positioning current in the positioning stage and the starting current value in the open-loop stage are set according to the maximum current value, so as to ensure that the compressor can be successfully started under various load conditions.
Since the positioning current and the starting current are designed according to the heaviest load of the compressor, when the load is light, the starting does not need the large current, and the use of the large positioning current and the open-loop starting current in the light load state causes the waste of electric quantity.
Disclosure of Invention
The invention mainly aims to provide a starting control method of an inverter compressor, and aims to solve the technical problems of large starting current and low energy efficiency of the inverter compressor of the existing refrigerator.
In order to achieve the above object, the present invention provides a method for controlling starting of an inverter compressor, comprising:
controlling to start the variable frequency compressor based on the parameter value of the parameter set; the parameter set comprises three parameters of positioning current, open-loop current and positioning time, and each parameter value of the parameter set is less than or equal to the respective rated maximum value;
if the starting of the variable frequency compressor fails, adjusting at least one of the values of the three parameters which is smaller than the rated maximum value of the variable frequency compressor to be the rated maximum value of the variable frequency compressor, and restarting the variable frequency compressor based on the adjusted parameter values of the parameter set until the starting is successful.
Further, adjusting at least one of the values of the three parameters that is smaller than the rated maximum value thereof to be the rated maximum value thereof includes:
and adjusting the parameter with the value smaller than the rated maximum value as the rated maximum value according to the condition that only one parameter with the value smaller than the rated maximum value is selected from the three parameters.
Further, adjusting at least one of the values of the three parameters that is smaller than the rated maximum value thereof to be the rated maximum value thereof includes:
and adjusting at least one of the two parameters with the values smaller than the rated maximum value to be the rated maximum value according to the two parameters with the values smaller than the rated maximum value in the three parameters.
Further, the two parameters with the values smaller than the rated maximum values are the positioning current and the open loop current respectively.
Further, the two parameters with the values smaller than the rated maximum values are the open-loop current and the positioning time respectively.
Further, the two parameters with the values smaller than the rated maximum values are the positioning current and the positioning time respectively.
Further, adjusting at least one of the values of the three parameters that is smaller than the rated maximum value thereof to be the rated maximum value thereof includes:
and adjusting at least one of the three parameters to be the rated maximum value according to the condition that the values of the three parameters are all smaller than the rated maximum value.
Further, said adjusting at least one of said three parameters to its rated maximum value comprises: all three parameters are adjusted to their rated maximum values.
A starting control device of an inverter compressor comprises:
the first module is used for controlling and starting the variable frequency compressor based on the parameter value of the parameter set; the parameter set comprises three parameters of positioning current, open-loop current and positioning time, and each parameter value of the parameter set is less than or equal to the respective rated maximum value;
and the second module is used for adjusting at least one of the values of the three parameters which is smaller than the rated maximum value of the variable frequency compressor to be the rated maximum value of the variable frequency compressor if the variable frequency compressor fails to be started, and restarting the variable frequency compressor based on the adjusted parameter values of the parameter set until the variable frequency compressor is started successfully.
The refrigerating equipment comprises the inverter compressor and the starting control device, wherein the starting control device is used for controlling the starting of the inverter compressor.
An electronic device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the starting control method of the variable frequency compressor.
A computer-readable storage medium having stored thereon a computer program which is executed by a processor to implement the start-up control method of the inverter compressor of any one of the above.
According to the starting control method of the variable frequency compressor, the variable frequency compressor is controlled to be started by selecting the set value corresponding to at least one of the positioning current, the open-loop current and the positioning time, the set value is adjusted to the corresponding maximum value if the starting fails, and the variable frequency compressor operates if the starting succeeds, so that the electric quantity consumption of the variable frequency compressor during the starting is reduced to a great extent, and the energy efficiency is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application, or may be learned by the practice of the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a current waveform diagram of one phase of U, V, W three-phase current for starting a frequency conversion compressor of a refrigerator in the prior art;
FIG. 2 is a flow chart illustrating a method for controlling the start-up of an inverter compressor according to an embodiment of the present application;
FIG. 3 is a flow chart illustrating one implementation of a preset adjustment sequence of the embodiment of FIG. 2;
FIG. 4 is a flow chart illustrating another implementation of the preset adjustment sequence of the embodiment shown in FIG. 2;
FIG. 5 is a flow chart illustrating another implementation of the preset adjustment sequence of the embodiment of FIG. 2;
FIG. 6 is a flow chart illustrating another implementation of the preset adjustment sequence of the embodiment of FIG. 2;
FIG. 7 illustrates a current waveform diagram for a two start compressor of one implementation of the embodiment shown in FIG. 2;
FIG. 8 is a block diagram illustrating a start-up control apparatus of an inverter compressor according to another embodiment of the present application;
fig. 9 shows a block diagram of a refrigeration device according to another embodiment of the present application.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The starting process of the variable frequency compressor comprises a positioning stage, an open loop stage and a closed loop stage.
As shown in fig. 2, an embodiment of the present application provides a start control method of an inverter compressor, including:
s10, controlling and starting the variable frequency compressor based on the parameter value of the parameter set; the parameter set comprises three parameters of positioning current, open-loop current and positioning time, and each parameter value of the parameter set is smaller than or equal to the respective rated maximum value.
For convenience of description, the rated maximum value may be simply referred to as a maximum value, and the parameter set may be referred to as a first set, i.e., the first set includes three parameters, namely, a positioning phase current, an open loop phase current, and a positioning phase time.
In some embodiments, the selectable values of each parameter respectively include a maximum value (i.e., a rated maximum value) and a preset value smaller than the maximum value, i.e., the selectable values of the three parameters, i.e., the positioning stage current, the open-loop stage current, and the positioning stage time, respectively include a preset value and a maximum value. Each parameter value of the first set may be a preset value or a maximum value.
A plurality of different first sets may be formed based on the values of each of the three parameters being different combinations of preset values or maximum values.
The first set comprises at least a preset value of a parameter. Each first set is respectively corresponding to a plurality of second sets; the second set is composed of at least one preset value in the corresponding first set. The positioning stage current, the open-loop stage current and the positioning stage time can also be respectively referred to as the positioning current, the open-loop current and the positioning time for short.
The positioning stage current correspondingly has two selectable values, namely a positioning stage current preset value a and a positioning stage current maximum value A, and the positioning stage current preset value a is smaller than the positioning stage current maximum value A, for example, 40% A is smaller than or equal to a and smaller than or equal to 80% A.
The current in the open loop stage correspondingly has two selectable values, namely a preset current value B in the open loop stage and a maximum current value B in the open loop stage, and the preset current value B in the open loop stage is smaller than the maximum current value B in the open loop stage, for example, B is more than or equal to 40% and less than or equal to 80% B.
The positioning stage time correspondingly has two selectable values, namely a positioning stage time preset value C and a positioning stage time maximum value C, and the positioning stage time preset value C is smaller than the positioning stage time maximum value C, for example, C is not less than 40% and not more than 80% C.
The positioning stage current maximum value is also referred to as a maximum load positioning stage current value (i.e., the corresponding positioning stage current at maximum load). The open loop stage current maximum is also referred to as the maximum load open loop stage current value (i.e., the corresponding open loop stage current at maximum load). The maximum positioning phase time is also referred to as the maximum load positioning phase time (i.e., the corresponding positioning phase time at maximum load).
In certain embodiments, the preset value for each parameter is 40% to 80% of the corresponding maximum value, i.e., a ∈ [ 40% a, 80% a ], preferably a ═ 50% a; b ∈ [ 40% B, 80% B ], preferably B ═ 50% B; c ∈ [ 40% C, 80% C ], preferably C ═ 50% C.
A plurality of different first sets may be formed based on the values of each of the three parameters being different combinations of preset values or maximum values. Specifically, the three parameters of the positioning stage current, the open-loop stage current and the positioning stage time can form eight kinds of starting parameter combinations in total, which are respectively: { ABC }, { aBC }, { AbC }, { abC }, { ABc }, { aBc }, { Abc }, and { ABC }.
The remaining of the eight combinations of starting parameters, except for ABC, are 7 first sets of aBC, ABC, abC, ABc, aBc, ABC and ABC, respectively.
And S20, if the starting of the variable frequency compressor fails, adjusting at least one of the three parameters which is smaller than the rated maximum value of the variable frequency compressor to be the rated maximum value of the variable frequency compressor, and restarting the variable frequency compressor based on the parameter values of the adjusted parameter set until the starting is successful.
In some embodiments, if the start-up fails, all the preset values in each second set are adjusted to the corresponding maximum values according to a preset adjustment sequence, and the inverter compressor is restarted until the start-up succeeds.
In some embodiments, adjusting at least one of the three parameters that is less than its rated maximum value to its rated maximum value comprises:
and adjusting the parameter with the value smaller than the rated maximum value as the rated maximum value according to the condition that only one parameter with the value smaller than the rated maximum value is selected from the three parameters.
For example, the second set corresponding to the first set { aBC } is only one, which is { a }; if the starting fails, adjusting a in the { a } to A, and then restarting the inverter compressor based on the third set { ABC }. The third set is a set obtained by combining the unadjusted parameters in the first set and the adjusted second set.
For example, the second set corresponding to the first set { AbC } is only one, which is { b }; if the starting fails, B in the B is adjusted to be B, and then the variable frequency compressor is restarted based on the third set ABC.
For example, the second set corresponding to the first set { ABc } is only one, which is { c }; if the starting fails, C in the { C } is adjusted to C, and then the variable frequency compressor is restarted based on the third set { ABC }.
Adjusting at least one of the values of the three parameters which is smaller than the rated maximum value thereof to be the rated maximum value thereof, comprising:
and adjusting at least one of the two parameters with the values smaller than the rated maximum value to be the rated maximum value according to the two parameters with the values smaller than the rated maximum value in the three parameters.
Specifically, two cases of the parameters smaller than the rated maximum value among the three parameters include:
the two parameters with values smaller than the rated maximum value are respectively positioning current and open-loop current;
two parameters with values smaller than the rated maximum value are respectively open-loop current and positioning time;
the two parameters with values smaller than the rated maximum value are the positioning current and the positioning time respectively.
For example, the second set corresponding to the first set { abC } is three, namely { a } { b } { ab }; as shown in fig. 3, the corresponding preset adjustment sequence is:
adjusting a in the { a } to A, and then restarting the inverter compressor based on the third set { AbC };
if the starting is successful, the preset values in other second sets are not adjusted;
if the starting fails, adjusting B in the { B } to be B, and then restarting the variable frequency compressor based on the third set { aBC };
if the starting is successful, the preset values in other second sets are not adjusted;
and if the starting fails, adjusting a and B in the { ab } to be A and B respectively, and restarting the variable frequency compressor based on the third set { ABC }.
For a plurality of second sets containing the same number of elements (i.e., preset values), the adjustment order may not be sequential. For example, for the second set { a } and the second set { b }, either { a } or { b } may be adjusted first. However, for a plurality of second sets containing different numbers of elements (i.e., preset values), the second set containing a small number of elements is adjusted first, and when restart fails after adjustment, the second set containing a large number of elements is adjusted, that is, the order of the number of elements contained is from small to large is used as the order of priority for adjustment.
The second set corresponding to the first set { aBc } is three, namely { a }, { c }, and { ac }; as shown in fig. 4, the corresponding preset adjustment sequence is:
adjusting a in the { a } to A, and then restarting the inverter compressor based on the third set { ABc };
if the starting is successful, the preset values in other second sets are not adjusted;
if the starting fails, C in the { C } is adjusted to be C, and then the variable frequency compressor is restarted on the basis of the third set { aBC };
if the starting is successful, the preset values in other second sets are not adjusted;
and if the starting fails, adjusting a and C in the { ac } to be A and C respectively, and restarting the variable frequency compressor based on the third set { ABC }.
The second set corresponding to the first set { Abc } is three, namely { b }, { c }, and { bc }; as shown in fig. 5, the corresponding preset adjustment sequence is:
adjusting B in the { B } to B, and then restarting the inverter compressor based on the third set { ABc };
if the starting is successful, the preset values in other second sets are not adjusted;
if the starting fails, C in the { C } is adjusted to be C, and then the variable frequency compressor is restarted on the basis of the third set { AbC };
if the starting is successful, the preset values in other second sets are not adjusted;
if the starting fails, B and C in { bc } are adjusted to be B and C respectively at the same time, and then the variable frequency compressor is restarted based on the third set { ABC }.
Adjusting at least one of the values of the three parameters which is smaller than the rated maximum value thereof to be the rated maximum value thereof, comprising:
and adjusting at least one of the three parameters to be the rated maximum value according to the condition that the values of the three parameters are all smaller than the rated maximum value.
For example, the second set corresponding to the first set { abc } has seven, which are { a }, { b }, { c }, { ab }, { ac }, { bc } and { abc }, respectively, wherein each of the three second sets { a }, { b }, and { c } includes only one preset value, each of the three second sets { ab }, { ac }, and { bc } includes two preset values, and each of the three second sets { abc } includes three preset values. Then, according to the sequence from small to large of the number of the preset values included in each second set, the second sets including one preset value are respectively adjusted, then the second sets including two preset values are adjusted, and finally the second sets including three preset values are adjusted. Specifically, as shown in fig. 6, the corresponding preset adjustment sequence is:
adjusting a in the { a } to be A, and then restarting the inverter compressor for the first time based on the third set { Abc };
if the first restart is successful, the preset values in other second sets are not adjusted;
if the first restart fails, adjusting B in the { B } to be B, and then restarting the inverter compressor for the second time based on the third set { aBc };
if the second restart is successful, the preset values in other second sets are not adjusted;
if the second restart fails, C in the { C } is adjusted to be C, and then the frequency conversion compressor is restarted for the third time based on the third set { abC };
if the third restart is successful, the preset values in other second sets are not adjusted;
if the third restart fails, respectively adjusting a and B in the { ab } to be A and B at the same time, and then restarting the inverter compressor for the fourth time based on the third set { ABc };
if the fourth restart is successful, the preset values in other second sets are not adjusted;
if the fourth restart fails, respectively adjusting a and C in the { ac } into A and C at the same time, and then restarting the inverter compressor for the fifth time based on the third set { AbC };
if the fifth restart is successful, the preset values in other second sets are not adjusted;
if the fifth restart fails, B and C in { bc } are respectively adjusted to be B and C at the same time, and then the variable frequency compressor is restarted for the sixth time based on the third set { aBC };
if the sixth restart is successful, the preset values in other second sets are not adjusted;
if the sixth restart fails, a, b and C in the { ABC } are simultaneously adjusted to A, B and C, respectively, and then a seventh restart of the inverter compressor is performed based on the third set { ABC }.
Preferably, adjusting at least one of the three parameters to its rated maximum comprises: all three parameters are adjusted to their rated maximum values.
Each first set corresponds to a plurality of second sets; the second set is a set composed of at least one preset value in the first set. The preset adjustment sequence may be an order in which the number of elements (i.e., preset values) included in each second set is arranged from small to large.
The number of elements (i.e. preset values) comprised in the second set may be one, two or three. If the plurality of second sets corresponding to one first set include a second set including one element, a second set including two elements, and a second set including three elements, the preset adjustment sequence includes sequentially adjusting preset values in the second sets including one element, sequentially adjusting preset values in the second sets including two elements, and sequentially adjusting preset values in the second sets including three elements.
If the plurality of second sets corresponding to one first set include a second set including one element and a second set including two elements, the preset adjustment sequence is to sequentially adjust preset values in the second sets including one element first, and then sequentially adjust preset values in the second sets including two elements.
If the plurality of second sets corresponding to one first set are all second sets comprising one element, the preset adjusting sequence is to sequentially adjust the preset values in the second sets.
As shown in fig. 7, when the inverter compressor is started, a preset positioning stage current value (50% of the positioning stage current corresponding to the maximum load) and a preset open-loop stage current value (50% of the open-loop stage current corresponding to the maximum load) are firstly used as the positioning stage current and the open-loop stage current, and a maximum positioning stage time value (50% of the positioning stage time corresponding to the maximum load) is used as the positioning stage time to start the inverter compressor. If the starting is successful, the operation is normal; if the starting fails, the compressor is immediately restarted by the positioning stage current, the open loop stage current value and the positioning stage time corresponding to the maximum load.
The starting control method of the inverter compressor of the embodiment can be applied to refrigeration equipment such as a refrigerator. In practical application, the current load condition of the refrigerator can be judged by detecting the ambient temperature, the temperature of the internal chamber of the refrigerator and the like, different positioning and open-loop starting currents, positioning stage time and the like are automatically selected according to the load of the refrigerator, appropriate preset values of all parameters are dynamically selected, a starting mode is dynamically adjusted, and the power consumption during starting can be reduced to a greater extent.
In the starting process of the variable frequency compressor of the refrigerator, under the condition of light load, the starting current and the positioning stage time are reduced, the electric quantity consumption of the compressor during starting can be reduced, and the energy efficiency is improved.
The power of the refrigerator inverter compressor is low when the refrigerator inverter compressor runs under light load, the power consumption of the compressor during starting is reduced by reducing positioning and open-loop starting current and positioning stage time, and the energy efficiency is improved.
According to the starting control method of the variable frequency compressor, the variable frequency compressor is controlled to be started by selecting the set value corresponding to at least one of the positioning stage current, the open loop stage current and the positioning stage time, the set value is adjusted to the corresponding maximum value if the starting fails, and the variable frequency compressor runs if the starting succeeds, so that the electric quantity consumption of the variable frequency compressor during starting is reduced to a great extent, the energy efficiency is improved, and the electric quantity waste caused by using the larger positioning stage current and the open loop starting current in a light load state is avoided.
As shown in fig. 8, another embodiment of the present application provides a start control apparatus of an inverter compressor, including:
the first module is used for controlling and starting the variable frequency compressor based on the parameter value of the parameter set; the parameter set comprises three parameters of positioning current, open-loop current and positioning time, and each parameter value of the parameter set is less than or equal to the respective rated maximum value;
and the second module is used for adjusting at least one of the values of the three parameters which is smaller than the rated maximum value of the variable frequency compressor to be the rated maximum value of the variable frequency compressor if the variable frequency compressor fails to be started, and restarting the variable frequency compressor based on the adjusted parameter values of the parameter set until the variable frequency compressor is started successfully.
For convenience of description, the rated maximum value may be simply referred to as a maximum value, and the parameter set may be referred to as a first set, i.e., the first set includes three parameters, namely, a positioning phase current, an open loop phase current, and a positioning phase time.
In some embodiments, the selectable values of each parameter respectively include a maximum value (i.e., a rated maximum value) and a preset value smaller than the maximum value, i.e., the selectable values of the three parameters, i.e., the positioning stage current, the open-loop stage current, and the positioning stage time, respectively include a preset value and a maximum value. Each parameter value of the first set may be a preset value or a maximum value.
A plurality of different first sets may be formed based on the values of each of the three parameters being different combinations of preset values or maximum values.
The first set comprises at least a preset value of a parameter. Each first set is respectively corresponding to a plurality of second sets; the second set is composed of at least one preset value in the corresponding first set. The positioning stage current, the open-loop stage current and the positioning stage time can also be respectively referred to as the positioning current, the open-loop current and the positioning time for short.
The preset adjustment sequence may be an order in which the number of elements (i.e., preset values) included in each second set is arranged from small to large.
The start control device of the inverter compressor of the embodiment is used for realizing the start control method of any one of the above embodiments.
Each first set corresponds to a plurality of second sets; the second set is a set composed of at least one preset value in the first set. The preset adjustment sequence may be an order in which the number of elements (i.e., preset values) included in each second set is arranged from small to large.
The number of elements (i.e. preset values) comprised in the second set may be one, two or three.
If the plurality of second sets corresponding to one first set include a second set including one element, a second set including two elements, and a second set including three elements, the preset adjustment sequence includes sequentially adjusting preset values in the second sets including one element, sequentially adjusting preset values in the second sets including two elements, and sequentially adjusting preset values in the second sets including three elements.
If the plurality of second sets corresponding to one first set include a second set including one element and a second set including two elements, the preset adjustment sequence is to sequentially adjust preset values in the second sets including one element first, and then sequentially adjust preset values in the second sets including two elements.
If the plurality of second sets corresponding to one first set are all second sets comprising one element, the preset adjusting sequence is to sequentially adjust the preset values in the second sets.
The value selectable value of the current in the positioning stage includes a preset value and a maximum value, the preset value of the current in the positioning stage is smaller than the maximum value of the current in the positioning stage, the specific proportion of the preset value of the current in the positioning stage and the maximum value of the current in the positioning stage can be set according to actual needs, and the preset value of the current in the positioning stage is preferably 50% of the maximum value of the current in the positioning stage.
The value selectable value of the current in the open-loop stage includes a preset value and a maximum value, the preset value of the current in the open-loop stage is smaller than the maximum value of the current in the open-loop stage, the specific proportion of the preset value of the current in the open-loop stage and the maximum value of the current in the open-loop stage can be set according to actual needs, and the preset value of the current in the open-loop stage is preferably 50% of the maximum value of the current in the open-loop stage in the embodiment.
The selectable value of the positioning stage time includes a preset value and a maximum value, the preset value of the positioning stage time is smaller than the maximum value of the positioning stage time, the specific proportion of the preset value of the positioning stage time and the maximum value of the positioning stage time can be set according to actual needs, and the preset value of the positioning stage time is preferably 50% of the maximum value of the positioning stage time.
The starting control device of the inverter compressor of the embodiment can be applied to refrigeration equipment such as a refrigerator. In practical application, the current load condition of the refrigerator can be judged by detecting the ambient temperature, the temperature of the internal chamber of the refrigerator and the like, different positioning and open-loop starting currents, positioning stage time and the like are automatically selected according to the load of the refrigerator, appropriate preset values of all parameters are dynamically selected, a starting mode is dynamically adjusted, and the power consumption during starting can be reduced to a greater extent.
The starting control device of the variable frequency compressor of the embodiment controls the starting of the variable frequency compressor by selecting a set value corresponding to at least one of the positioning stage current, the open loop stage current and the positioning stage time, adjusts the set value to a corresponding maximum value if the starting fails, and operates the variable frequency compressor if the starting succeeds, so that the electric quantity consumption of the variable frequency compressor during the starting is reduced to a great extent, the energy efficiency is improved, and the electric quantity waste caused by using a larger positioning stage current and an open loop starting current in a light load state is avoided.
As shown in fig. 9, another embodiment of the present application provides a refrigeration apparatus, which includes an inverter compressor and the start control device, wherein the start control device is used for controlling the start of the inverter compressor.
The step that the starting control device of the refrigeration equipment controls the starting of the variable frequency compressor of the refrigeration equipment comprises the following steps:
controlling starting of an inverter compressor of the refrigeration equipment based on the parameters of the first set;
if the starting fails, all the preset values in the second sets are adjusted to the corresponding maximum values according to the preset adjustment sequence, and the variable frequency compressor of the refrigeration equipment is restarted until the starting is successful.
The starting process of the variable frequency compressor of the refrigeration equipment comprises a positioning stage, an open-loop stage and a closed-loop stage; the first set comprises three parameters of positioning stage current, open loop stage current and positioning stage time; the selectable values of each parameter respectively comprise a maximum value and a preset value smaller than the maximum value, namely the selectable values of the three parameters, namely the current in the positioning stage, the current in the open-loop stage and the time in the positioning stage respectively correspondingly comprise a preset value and a maximum value.
The first set comprises at least a preset value of a parameter. Each first set is respectively corresponding to a plurality of second sets; the second set is composed of at least one preset value in the corresponding first set. The positioning stage current, the open-loop stage current and the positioning stage time can also be respectively referred to as the positioning current, the open-loop current and the positioning time for short.
The preset adjustment sequence may be an order in which the number of elements (i.e., preset values) included in each second set is arranged from small to large.
The number of elements (i.e. preset values) comprised in the second set may be one, two or three.
If the plurality of second sets corresponding to one first set include a second set including one element, a second set including two elements, and a second set including three elements, the preset adjustment sequence includes sequentially adjusting preset values in the second sets including one element, sequentially adjusting preset values in the second sets including two elements, and sequentially adjusting preset values in the second sets including three elements.
If the plurality of second sets corresponding to one first set include a second set including one element and a second set including two elements, the preset adjustment sequence is to sequentially adjust preset values in the second sets including one element first, and then sequentially adjust preset values in the second sets including two elements.
If the plurality of second sets corresponding to one first set are all second sets comprising one element, the preset adjusting sequence is to sequentially adjust the preset values in the second sets.
The refrigeration equipment of the embodiment can be equipment such as a refrigerator and an air conditioner.
In the refrigeration equipment of the embodiment, the start control device controls the start of the variable frequency compressor by selecting a set value corresponding to at least one of the positioning stage current, the open loop stage current and the positioning stage time, if the start fails, the set value is adjusted to a corresponding maximum value, and if the start succeeds, the variable frequency compressor operates, so that the electric quantity consumption of the variable frequency compressor during the start is reduced to a great extent, the energy efficiency is improved, and the electric quantity waste caused by using a larger positioning stage current and an open loop start current in a light load state is avoided.
Another embodiment of the present application provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the start control method of the inverter compressor in any of the above embodiments.
Another embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, the program being executed by a processor to implement the start-up control method of the inverter compressor of any of the above embodiments.
The above-mentioned embodiments only express the embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (12)
1. A starting control method of an inverter compressor is characterized by comprising the following steps:
controlling to start the variable frequency compressor based on the parameter value of the parameter set; the parameter set comprises three parameters of positioning current, open-loop current and positioning time, and each parameter value of the parameter set is less than or equal to the respective rated maximum value;
if the starting of the variable frequency compressor fails, adjusting at least one of the values of the three parameters which is smaller than the rated maximum value of the variable frequency compressor to be the rated maximum value of the variable frequency compressor, and restarting the variable frequency compressor based on the adjusted parameter values of the parameter set until the starting is successful.
2. The start-up control method of claim 1, wherein said adjusting at least one of the values of said three parameters that is less than its rated maximum value to its rated maximum value comprises:
and adjusting the parameter with the value smaller than the rated maximum value as the rated maximum value according to the condition that only one parameter with the value smaller than the rated maximum value is selected from the three parameters.
3. The start-up control method of claim 1, wherein said adjusting at least one of the values of said three parameters that is less than its rated maximum value to its rated maximum value comprises:
and adjusting at least one of the two parameters with the values smaller than the rated maximum value to be the rated maximum value according to the two parameters with the values smaller than the rated maximum value in the three parameters.
4. A start-up control method as claimed in claim 3, characterized in that the two parameters whose values are less than their rated maximum values are the positioning current and the open loop current, respectively.
5. A start-up control method according to claim 3, characterized in that the two parameters whose values are less than their rated maximum values are the open-loop current and the positioning time, respectively.
6. A start-up control method according to claim 3, characterized in that the two parameters whose values are smaller than their rated maximum values are the positioning current and the positioning time, respectively.
7. The start-up control method of claim 1, wherein said adjusting at least one of the values of said three parameters that is less than its rated maximum value to its rated maximum value comprises:
and adjusting at least one of the three parameters to be the rated maximum value according to the condition that the values of the three parameters are all smaller than the rated maximum value.
8. The startup control method of claim 7, wherein said adjusting at least one of said three parameters to its rated maximum comprises: all three parameters are adjusted to their rated maximum values.
9. A starting control device of an inverter compressor is characterized by comprising:
the first module is used for controlling and starting the variable frequency compressor based on the parameter value of the parameter set; the parameter set comprises three parameters of positioning current, open-loop current and positioning time, and each parameter value of the parameter set is less than or equal to the respective rated maximum value;
and the second module is used for adjusting at least one of the values of the three parameters which is smaller than the rated maximum value of the variable frequency compressor to be the rated maximum value of the variable frequency compressor if the variable frequency compressor fails to be started, and restarting the variable frequency compressor based on the adjusted parameter values of the parameter set until the variable frequency compressor is started successfully.
10. A refrigeration apparatus comprising an inverter compressor and the start-up control apparatus of claim 9, said start-up control apparatus being configured to control a start-up of said inverter compressor.
11. An electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the start control method of the inverter compressor according to any one of claims 1 to 8.
12. A computer-readable storage medium, on which a computer program is stored, characterized in that the program is executed by a processor to implement the start-up control method of the inverter compressor according to any one of claims 1 to 8.
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