CN110658380A - Power detection method and device, air conditioner and storage medium - Google Patents
Power detection method and device, air conditioner and storage medium Download PDFInfo
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- CN110658380A CN110658380A CN201910954259.2A CN201910954259A CN110658380A CN 110658380 A CN110658380 A CN 110658380A CN 201910954259 A CN201910954259 A CN 201910954259A CN 110658380 A CN110658380 A CN 110658380A
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- outdoor unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/60—Energy consumption
Abstract
The invention provides a power detection method, a device, an air conditioner and a storage medium, wherein the power detection method of an outdoor unit of the air conditioner comprises the following steps: configuring a first power of the outdoor fan according to the type of the outdoor fan; configuring a second power of a reversing component in the outdoor unit according to the working mode of the air conditioner; and configuring the power of the outdoor unit according to the first power, the second power and the third power of other power devices. By executing the scheme, the universality of the power detection of the outdoor unit can be improved by detecting the type of the fan and the running state of the air conditioner.
Description
Technical Field
The invention relates to the field of air conditioner control, in particular to a power detection method, a power device, an air conditioner and a computer readable storage medium.
Background
The air conditioner belongs to a product with high power consumption, the outdoor unit is an important component of the running power of the air conditioner, and how to reliably determine the power of the outdoor unit and feed the power back to a user becomes a technical problem to be solved urgently.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
Therefore, an object of the present invention is to provide a new power detection method for an outdoor unit.
Another object of the present invention is to provide a power detection device for an outdoor unit.
Another object of the present invention is to provide an air conditioner.
Another object of the present invention is to provide a computer-readable storage medium.
In order to achieve at least one of the above objects, according to a first aspect of the present invention, a method for detecting power of an outdoor unit of an air conditioner includes: configuring a first power of the outdoor fan according to the type of the outdoor fan; configuring a second power of a reversing component in the outdoor unit according to the working mode of the air conditioner; and configuring the power of the outdoor unit according to the first power, the second power and the third power of other power devices.
In the technical scheme, the detection process of the outdoor unit of the air conditioner is divided into three parts based on the operation condition of the air conditioner, the power of the outdoor unit is determined by respectively detecting the power of the outdoor fan, the power of the reversing assembly and the power of other outdoor unit devices, and the universality of the outdoor unit power detection can be improved by detecting the type of the fan and the operation state of the air conditioner.
In the above technical solution, configuring the first power of the outdoor fan according to the type of the outdoor fan specifically includes: if the outdoor fan is a direct current fan, configuring the power of the direct current fan according to a power factor correction circuit in the outdoor unit so as to record the power of the direct current fan as a first power; if the outdoor fan is an alternating current fan, the power of the alternating current fan is configured according to the environmental parameters and/or the input voltage of the alternating current fan and a prestored reference power meter so as to mark the power of the alternating current fan as first power.
In the technical scheme, by respectively determining the detection modes of the direct current fan and the alternating current fan,
in any of the above technical solutions, if the outdoor fan is a dc fan, configuring the power of the dc fan according to a power factor correction circuit in the outdoor unit, specifically including: if the outdoor fan is a direct current fan, the power of the power factor correction circuit is configured according to the voltage and the instantaneous current of the power factor correction circuit, and the power of the power factor correction circuit is determined as the power of the direct current fan.
In the technical scheme, if the outdoor fan is a dc fan, a circuit thereof is after a PFC (power factor correction) circuit, the dc fan is driven to operate by the power factor correction circuit, so that the power thereof is included in the PFC power, because the PFC circuit is equivalent to a switching power supply, the PFC power is obtained by multiplying a voltage instantaneous value and a current instantaneous value detected by the PFC circuit, and the PFC power is determined as the power of the dc fan.
In any of the above technical solutions, if the outdoor fan is an ac fan, configuring the power of the ac fan according to the environmental parameter and/or the input voltage of the ac fan and a pre-stored reference power meter, specifically including: weighting the environmental parameters of the alternating current fan and the input voltage to obtain weighted processing parameters; and determining a query result of the reference power meter according to the weighting processing parameters, and determining the power of the alternating current fan.
In the technical scheme, the environmental parameters comprise outdoor temperature, outdoor humidity and the pipe temperature of an outdoor heat exchanger arranged opposite to an outdoor fan; and configuring a weighting processing parameter according to the outdoor temperature and the corresponding first weighting coefficient, the outdoor humidity and the corresponding second weighting coefficient and the third weighting coefficient corresponding to the pipe temperature.
In the technical scheme, the reference power meter is generated based on the environment parameters and the input voltage, and the environment parameters are multiple, so that the multiple environment parameters can be weighted to obtain weighted processing parameters, the weighted processing parameters at least consider outdoor temperature and humidity and the influence of the pipe temperature of the outdoor heat exchanger on the outdoor fan, and the current power of the outdoor fan can be determined by combining the input voltage of the outdoor fan and the preset reference power meter.
On one hand, the setting of the reference power meter can be simplified, on the other hand, the influence of outdoor temperature, outdoor humidity and the tube temperature of the outdoor heat exchanger on the power of the outdoor fan is reduced, the weighting coefficient is reasonably set, and the accuracy of the power value of the outdoor fan determined based on the table look-up operation can be improved.
Further, in the technical scheme, the reference power table is generated based on the environment parameters and the input voltage, and since the environment parameters are multiple, the multiple environment parameters can be weighted to obtain weighted processing parameters, the weighted processing parameters at least consider outdoor temperature and humidity and the influence of the pipe temperature of the outdoor heat exchanger on the outdoor fan, and the current power of the outdoor fan can be determined by combining the input voltage of the outdoor fan and the preset reference power table.
Specifically, a voltage interval to which the effective input voltage belongs and a parameter interval to which the weighting processing parameter belongs are determined; in the preset power table, determining first fan power corresponding to a lower limit threshold of a parameter interval and a lower limit threshold of a voltage interval, second fan power corresponding to an upper limit threshold of the parameter interval and a lower limit threshold of the voltage interval, third fan power corresponding to a lower limit threshold of the parameter interval and an upper limit threshold of the voltage interval, and fourth fan power corresponding to an upper limit threshold of the parameter interval and an upper limit threshold of the voltage interval.
And carrying out piecewise linearization processing on the first fan power, the second fan power, the third fan power and the fourth fan power so as to determine a processing result as the power of the outdoor fan.
In any of the above technical solutions, configuring the second power of the reversing component in the outdoor unit according to the working mode of the air conditioner specifically includes: if the air conditioner is in a heating mode, determining that the reversing assembly is in an operating state, configuring the power of the reversing assembly according to the input voltage of the reversing assembly and a preset evaluation mode, and recording the power as a second power; if the air conditioner is in a cooling mode, the reversing component is determined to be in a power-off state, so that the power of the reversing component is configured to be 0.
In the technical scheme, the reversing assembly is used for operating the air conditioner in a cooling mode or a heating mode, controlling and adjusting the flow direction of a refrigerant in the air conditioner so as to realize heating or cooling to the indoor space, and in order to detect the power of the reversing assembly, the input voltage of the reversing assembly needs to be determined so as to determine the power of the reversing assembly based on the input voltage and a preset power detection mode.
Specifically, the power detection of the reversing component can be carried out in various ways, the identification information is set, the mapping relation between the identification information and the corresponding power detection way is established, after the identification information is obtained, the corresponding power detection way is determined, and the power of the reversing component is determined based on the input voltage of the reversing component and the corresponding power detection way.
In any of the above technical solutions, configuring the power of the commutation component according to the input voltage to the component and a preset evaluation mode specifically includes: the reversing assembly comprises an induction electromagnetic coil, the loss parameter of the induction electromagnetic coil is determined, and the loss calculation formula corresponding to the loss parameter is determined to be a preset power detection mode.
In the technical scheme, as a detection mode of the power of the reversing assembly, the power consumption of the reversing assembly is mainly located in the electromagnetic coil, and the power of the reversing assembly can be directly obtained by calculating the line loss of the induction coil.
In any of the above technical solutions, determining the power of the commutation component according to the input voltage and the power detection mode specifically includes: the loss parameters comprise resistance and inductance of the induction electromagnetic coil, and the power of the reversing assembly is determined according to the loss calculation formula, the input voltage, the resistance and the inductance.
Wherein the loss is calculated as
U is the input voltage, L is the inductance, R is the resistance, omega is the frequency parameter of input voltage.
The inductance and the resistance can be correspondingly determined according to the type of the commutation component, and can also be determined in an off-line mode.
In any of the above technical solutions, configuring the power of the commutation component according to the input voltage to the component and a preset evaluation mode specifically includes: and determining a preset query library of the reversing assembly, and determining a mode of querying corresponding information in the preset query library according to the input voltage as a preset power detection mode.
In the technical scheme, as another detection mode of the power of the reversing component, a power lookup table can be prestored in a memory of the air conditioner, the current power lookup table matched with the model information is determined by acquiring the model information of the reversing component, and the table lookup operation is executed by combining the current input voltage.
In any of the above technical solutions, determining the power of the commutation component according to a query result of the input voltage to the power lookup table specifically includes: determining an upper limit voltage threshold and a lower limit voltage threshold of a preset voltage interval to which the input voltage belongs in the power lookup table; determining an upper limit power threshold corresponding to the upper limit voltage threshold and a lower limit power threshold corresponding to the lower limit voltage threshold in the power lookup table; and performing a piecewise linearization operation on the upper voltage threshold, the lower voltage threshold, the upper power threshold and the lower power threshold to determine the power of the commutation component matched with the input voltage.
In the technical scheme, in order to improve the accuracy of the power of the commutation component determined by the table look-up operation, the data obtained by the table look-up operation is subjected to piecewise linearization processing, that is, a nonlinear numerical value is taken as piecewise linearization processing to be equivalent to a linear system.
Specifically, the upper limit voltage threshold and the lower limit voltage threshold of a voltage interval of the input voltage are determined, the upper limit voltage threshold corresponds to an upper limit power threshold, the lower limit voltage threshold corresponds to a lower limit power threshold, piecewise linearization operation is performed on the upper limit voltage threshold, the lower limit voltage threshold, the upper limit power threshold and the lower limit power threshold to obtain a linear processing curve, the required power of the commutation component is obtained based on the linear processing curve, and the accuracy of the obtained power detection is ensured by combining empirical data in a prestored power table and a piecewise linearization processing mode.
In any of the above technical solutions, configuring the power of the outdoor unit according to the first power, the second power, and the third power of the other power devices specifically includes: detecting whether the current power grid frequency is a reference frequency; and if the power grid frequency is not the reference frequency, generating a conversion parameter according to the relation between the power grid frequency and the reference frequency so as to convert the configured power of the outdoor unit into the target power of the outdoor unit.
In the technical scheme, in order to improve the universality of the power detection method in the application, whether the current power grid frequency is matched with the reference frequency corresponding to the reference power can be further detected, if the current power grid frequency is not matched with the reference frequency, the conversion parameter is determined according to the relation between the current power grid frequency and the reference poverty, the conversion operation is executed based on the conversion parameter, the power of the outdoor fan matched with the current power grid frequency is obtained, and the accuracy of outdoor power detection under different power grid frequencies is further ensured.
In any of the above technical solutions, according to a relationship between a grid frequency and a reference frequency, performing a conversion operation on a reference power to obtain a converted power correspondingly, specifically including: determining the relation between the first fan rotating speed under the reference frequency and the second fan rotating speed under the power grid frequency according to the relation between the power grid frequency and the reference frequency; and determining a conversion coefficient between the reference power and the conversion power according to the relation between the first fan rotating speed and the second fan rotating speed, so as to configure the conversion power according to the first conversion coefficient.
In any of the above technical solutions, determining a relationship between the reference power and the converted power according to a relationship between a first fan rotation speed and a second fan rotation speed specifically includes: determining a first synchronous rotating speed of the outdoor fan corresponding to the reference frequency and a second synchronous rotating speed of the outdoor fan corresponding to the power grid frequency; determining a first motor rotation speed difference according to the first synchronous rotation speed and the first fan rotation speed; determining a second motor rotation speed difference according to the second synchronous rotation speed and the second fan rotation speed; and determining a conversion coefficient according to the relation among the first motor rotation speed difference, the second motor rotation speed difference, the grid frequency and the reference frequency.
In any of the above technical solutions, the method further includes: the third power comprises the configuration of rectifier bridge stack power, the configuration of common mode inductance power, the configuration of fuse power and line loss configuration in the outdoor unit.
In the technical scheme, not only are losses of a PFC circuit and a subsequent circuit (including power of power devices such as a compressor and an outdoor direct current fan) considered, but also power consumption before the PFC circuit is considered, such as power of a rectifier bridge stack, an EMC circuit, a four-way valve (heating), a protective tube and an alternating current fan (if any), and therefore power detection precision is improved.
In any of the above technical solutions, the method further includes: and performing a filtering operation on the configured power of the outdoor unit to generate a target power of the outdoor unit.
According to a second aspect of the present invention, there is provided a power detecting apparatus for an outdoor unit of an air conditioner, comprising: a memory and a processor; a memory for storing program code; a processor configured to perform the steps of the method for detecting power of an outdoor unit of an air conditioner according to any one of the first aspect of the present invention.
According to a third aspect of the present invention, there is provided an air conditioner comprising the power detection device for an outdoor unit of an air conditioner as set forth in any one of the fourth aspects.
According to an aspect of the fourth aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the power detection method according to any one of the aspects of the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view illustrating an electric control structure of an outdoor unit according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a power detection method of an outdoor unit for an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a power detection method of an outdoor unit for an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic block diagram illustrating a power detecting apparatus of an outdoor unit for an air conditioner according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The air conditioner may be an integrated air conditioner or a split air conditioner, the air conditioner includes an indoor unit and an outdoor unit, an indoor fan is disposed in the indoor unit, the indoor fan is specifically an ac fan or a built-in dc fan, and a detection method of power of the ac fan and/or the built-in dc fan is described below with reference to specific embodiments.
As shown in fig. 1, the air conditioner supplies power by an AC power source AC, and an AC input sequentially passes through a rectifier module, a power factor correction module and an inverter to supply power to an outdoor fan, wherein the power factor correction module includes a reactor and a switching device, and the switching device receives a PWM switching signal.
In addition, a driving motor and a reversing component are connected between the zero line and the live line of the alternating current power supply.
Wherein, the reversing component is any one of a four-way valve, a five-way valve or a six-way valve.
Furthermore, the on-off of the circuit between the outdoor unit and the indoor unit is controlled by controlling the on-off of the relay.
The first embodiment is as follows:
as shown in fig. 2, a power detection method according to an embodiment of the present invention includes:
step 202, configuring a first power of the outdoor fan according to the type of the outdoor fan.
Wherein, step 202 specifically includes: if the outdoor fan is a direct current fan, configuring the power of the direct current fan according to a power factor correction circuit in the outdoor unit so as to record the power of the direct current fan as a first power; if the outdoor fan is an alternating current fan, the power of the alternating current fan is configured according to the environmental parameters and/or the input voltage of the alternating current fan and a prestored reference power meter so as to mark the power of the alternating current fan as first power.
In the embodiment, by respectively determining the detection modes of the direct current fan and the alternating current fan,
in any of the above embodiments, if the outdoor fan is a dc fan, configuring the power of the dc fan according to a power factor correction circuit in the outdoor unit, specifically including: if the outdoor fan is a direct current fan, the power of the power factor correction circuit is configured according to the voltage and the instantaneous current of the power factor correction circuit, and the power of the power factor correction circuit is determined as the power of the direct current fan.
In this embodiment, if the outdoor fan is a dc fan, the circuit is after a PFC (power factor correction) circuit, and the dc fan is driven by the power factor correction circuit to operate, so that the power thereof is included in the PFC power, because the PFC circuit is equivalent to a switching power supply, the PFC power is obtained by multiplying the instantaneous voltage value and the instantaneous current value detected by the PFC circuit, and the PFC power is determined as the power of the dc fan.
In any of the above embodiments, if the outdoor fan is an ac fan, configuring the power of the ac fan according to the environmental parameter and/or the input voltage of the ac fan and a pre-stored reference power table, specifically including: weighting the environmental parameters of the alternating current fan and the input voltage to obtain weighted processing parameters; and determining a query result of the reference power meter according to the weighting processing parameters, and determining the power of the alternating current fan.
In this embodiment, the environmental parameter includes an outdoor temperature, an outdoor humidity, and a pipe temperature of the outdoor heat exchanger disposed opposite the outdoor fan; and configuring a weighting processing parameter according to the outdoor temperature and the corresponding first weighting coefficient, the outdoor humidity and the corresponding second weighting coefficient and the third weighting coefficient corresponding to the pipe temperature.
In this embodiment, the reference power table is generated based on the environment parameters and the input voltage, and since the environment parameters are multiple, weighting processing may be performed on the multiple environment parameters to obtain weighting processing parameters, where the weighting processing parameters at least consider outdoor temperature and humidity and the influence of the pipe temperature of the outdoor heat exchanger on the outdoor fan, and the current power of the outdoor fan may be determined by combining the input voltage of the outdoor fan and a preset reference power table.
On one hand, the setting of the reference power meter can be simplified, on the other hand, the influence of outdoor temperature, outdoor humidity and the tube temperature of the outdoor heat exchanger on the power of the outdoor fan is reduced, the weighting coefficient is reasonably set, and the accuracy of the power value of the outdoor fan determined based on the table look-up operation can be improved.
Further, in this embodiment, the reference power table is generated based on the environment parameters and the input voltage, and since there are a plurality of environment parameters, weighting processing may be performed on the plurality of environment parameters to obtain a weighting processing parameter, where the weighting processing parameter at least considers the outdoor temperature and humidity and the influence of the outdoor heat exchanger tube temperature on the outdoor fan, and the current power of the outdoor fan may be determined by combining the input voltage of the outdoor fan and the preset reference power table.
Specifically, a voltage interval to which the effective input voltage belongs and a parameter interval to which the weighting processing parameter belongs are determined; in the preset power table, determining first fan power corresponding to a lower limit threshold of a parameter interval and a lower limit threshold of a voltage interval, second fan power corresponding to an upper limit threshold of the parameter interval and a lower limit threshold of the voltage interval, third fan power corresponding to a lower limit threshold of the parameter interval and an upper limit threshold of the voltage interval, and fourth fan power corresponding to an upper limit threshold of the parameter interval and an upper limit threshold of the voltage interval.
And carrying out piecewise linearization processing on the first fan power, the second fan power, the third fan power and the fourth fan power so as to determine a processing result as the power of the outdoor fan.
And 204, configuring a second power of the reversing component in the outdoor unit according to the working mode of the air conditioner.
Wherein, step 204 specifically includes: if the air conditioner is in a heating mode, determining that the reversing assembly is in an operating state, configuring the power of the reversing assembly according to the input voltage of the reversing assembly and a preset evaluation mode, and recording the power as a second power; if the air conditioner is in a cooling mode, the reversing component is determined to be in a power-off state, so that the power of the reversing component is configured to be 0.
In this embodiment, the reversing component is used for the air conditioner to operate in a cooling mode or a heating mode, and controls and adjusts the flow direction of a refrigerant in the air conditioner to realize heating or cooling to the indoor space, and in order to detect the power of the reversing component, the input voltage of the reversing component needs to be determined, so as to determine the power of the reversing component based on the input voltage and a preset power detection mode.
Specifically, the power detection of the reversing component can be carried out in various ways, the identification information is set, the mapping relation between the identification information and the corresponding power detection way is established, after the identification information is obtained, the corresponding power detection way is determined, and the power of the reversing component is determined based on the input voltage of the reversing component and the corresponding power detection way.
In any of the above embodiments, configuring the power of the commutation component according to the input voltage to the component and a preset evaluation mode specifically includes: the reversing assembly comprises an induction electromagnetic coil, the loss parameter of the induction electromagnetic coil is determined, and the loss calculation formula corresponding to the loss parameter is determined to be a preset power detection mode.
In this embodiment, as a way of detecting the power of the commutation component, since the power consumption of the commutation component is mainly due to the electromagnetic coil, the power of the commutation component can be directly obtained by calculating the line loss of the induction coil.
In any of the above embodiments, determining the power of the commutation component according to the input voltage and the power detection mode specifically includes: the loss parameters comprise resistance and inductance of the induction electromagnetic coil, and the power of the reversing assembly is determined according to the loss calculation formula, the input voltage, the resistance and the inductance.
Wherein, the loss calculation formula is:
u is the input voltage, L is the inductance, R is the resistance, omega is the frequency parameter of input voltage.
The inductance and the resistance can be correspondingly determined according to the type of the commutation component, and can also be determined in an off-line mode.
In any of the above embodiments, configuring the power of the commutation component according to the input voltage to the component and a preset evaluation mode specifically includes: and determining a preset query library of the reversing assembly, and determining a mode of querying corresponding information in the preset query library according to the input voltage as a preset power detection mode.
In this embodiment, as another detection method of the power of the commutation component, a power lookup table may be prestored in a memory of the air conditioner, the current power lookup table matched with the model information is determined by obtaining the model information of the commutation component, and a table lookup operation is performed in combination with the current input voltage.
In any of the above embodiments, determining the power of the commutation component according to a result of looking up the power look-up table by the input voltage specifically includes: determining an upper limit voltage threshold and a lower limit voltage threshold of a preset voltage interval to which the input voltage belongs in the power lookup table; determining an upper limit power threshold corresponding to the upper limit voltage threshold and a lower limit power threshold corresponding to the lower limit voltage threshold in the power lookup table; and performing a piecewise linearization operation on the upper voltage threshold, the lower voltage threshold, the upper power threshold and the lower power threshold to determine the power of the commutation component matched with the input voltage.
In this embodiment, in order to improve the accuracy of the power of the commutation component determined by the table lookup operation, the data obtained by the table lookup operation is subjected to a piecewise linearization process, that is, a nonlinear numerical value is treated as the piecewise linearization process to be equivalent to a linear system.
Specifically, the upper limit voltage threshold and the lower limit voltage threshold of a voltage interval of the input voltage are determined, the upper limit voltage threshold corresponds to an upper limit power threshold, the lower limit voltage threshold corresponds to a lower limit power threshold, piecewise linearization operation is performed on the upper limit voltage threshold, the lower limit voltage threshold, the upper limit power threshold and the lower limit power threshold to obtain a linear processing curve, the required power of the commutation component is obtained based on the linear processing curve, and the accuracy of the obtained power detection is ensured by combining empirical data in a prestored power table and a piecewise linearization processing mode.
Step 206, configuring the power of the outdoor unit according to the first power, the second power and the third power of other power devices.
In the embodiment, the detection process of the outdoor unit of the air conditioner is divided into three parts based on the operation condition of the air conditioner, the power of the outdoor unit is determined by respectively detecting the power of the outdoor fan, the power of the reversing assembly and the power of other outdoor unit devices, and the universality of the outdoor unit power detection can be improved by detecting the type of the fan and the operation state of the air conditioner.
Step 206, among others, further includes: detecting whether the current power grid frequency is a reference frequency; and if the power grid frequency is not the reference frequency, generating a conversion parameter according to the relation between the power grid frequency and the reference frequency so as to convert the configured power of the outdoor unit into the target power of the outdoor unit.
In this embodiment, in order to improve the universality of the power detection method in the present application, it may be further detected whether the current grid frequency matches a reference frequency corresponding to the reference power, and if not, the conversion parameter is determined according to a relationship between the current grid frequency and the reference poverty, so as to perform a conversion operation based on the conversion parameter, obtain the power of the outdoor fan matching the current grid frequency, and further ensure the accuracy of the outdoor unit power detection at different grid frequencies.
In any of the above embodiments, according to a relationship between the grid frequency and the reference frequency, performing a conversion operation on the reference power to obtain a converted power correspondingly includes: determining the relation between the first fan rotating speed under the reference frequency and the second fan rotating speed under the power grid frequency according to the relation between the power grid frequency and the reference frequency; and determining a conversion coefficient between the reference power and the conversion power according to the relation between the first fan rotating speed and the second fan rotating speed, so as to configure the conversion power according to the first conversion coefficient.
In any of the above embodiments, determining the relationship between the reference power and the converted power according to the relationship between the first fan rotation speed and the second fan rotation speed specifically includes: determining a first synchronous rotating speed of the outdoor fan corresponding to the reference frequency and a second synchronous rotating speed of the outdoor fan corresponding to the power grid frequency; determining a first motor rotation speed difference according to the first synchronous rotation speed and the first fan rotation speed; determining a second motor rotation speed difference according to the second synchronous rotation speed and the second fan rotation speed; and determining a conversion coefficient according to the relation among the first motor rotation speed difference, the second motor rotation speed difference, the grid frequency and the reference frequency.
In any of the above embodiments, further comprising: the third power comprises the configuration of rectifier bridge stack power, the configuration of common mode inductance power, the configuration of fuse power and line loss configuration in the outdoor unit.
In the embodiment, not only the losses of the PFC and the subsequent circuits (including the power of power devices such as a compressor and an outdoor direct current fan) are considered, but also the power consumption before the PFC circuit is considered, such as the power of a rectifier bridge stack, an EMC circuit, a four-way valve (heating), a protective tube and an alternating current fan (if any), and therefore the power detection precision is improved.
In any of the above embodiments, further comprising: and performing a filtering operation on the configured power of the outdoor unit to generate a target power of the outdoor unit.
Example two:
next, a power detection scheme suitable for an outdoor unit of an air conditioner will be described with reference to the second embodiment.
As illustrated in fig. 3, a power detection method according to another embodiment of the present invention includes:
step 302, determining the type of the outdoor fan;
the difference of the outdoor unit of the current air conditioner lies in that the matched fan types are a direct current fan and an alternating current fan, and the circuits of the direct current fan and the alternating current fan are different. The circuit of the direct current fan is after rectification, so the direct current fan can be calculated through PFC power, and the circuit of the alternating current fan is before rectification, so the direct current fan cannot be calculated through PFC power, and needs to be calculated additionally.
Step 304, detecting whether the air conditioner operates in a heating mode or not by using a direct current fan as the outdoor fan, entering step 306 if the detection result is yes, and entering step 308 if the detection result is no;
step 306, rectifying bridge stack power, common mode inductance power, protective tube power, PFC power, four-way valve power and line loss;
308, rectifying bridge stack power, common mode inductor power, protective tube power, PFC power and line loss;
step 310, the outdoor fan is an alternating current fan, the power grid frequency is detected, whether the air conditioner operates in a heating mode is detected, if the detection result is yes, the step 312 is executed, and if the detection result is no, the step 314 is executed;
step 312, bridge rectifier stack power + common mode inductor power + fuse power + first ac fan power (50 Hz)/second ac fan power (60Hz) + four-way valve power + line loss;
step 314, bridge rectifier stack power + common mode inductor power + fuse power + an ac fan power (50 Hz)/a second ac fan power (60Hz) + line loss.
In addition, because different power supply frequencies, the actual operating power of alternating current fan is different, consequently through detecting the electric wire netting frequency, guarantees the commonality of power detection scheme in this application.
The outdoor alternating current fan is assumed to be a single-phase asynchronous motor, and the rotating speed formula of the asynchronous motor is shown as formula (1):
wherein f is the grid frequency of the fan, s is the slip ratio, npThe number of pole pairs of the motor.
From the above formula, the rotation speed of the single-phase asynchronous motor is influenced by the input electrical frequency f, and further influences the change of power.
In addition, the power change of the fan is proportional to the third power of the rotating speed ratio, namely, the formula (2)
And filtering the obtained total power of the outdoor unit to output a stable power value.
Example three:
as shown in fig. 4, the power detection apparatus 40 according to the embodiment of the present invention includes: a memory 402 and a processor 404.
A memory 402 for storing program code; the processor 404 is configured to call a program code to perform the power detection method of the outdoor unit of the air conditioner according to any of the embodiments.
Example four:
the air conditioner according to the embodiment of the present invention includes the power detection device 60 described in the above embodiment.
In this embodiment, the air conditioner includes any one of the operation control devices, so that all the beneficial technical effects of the operation control device are achieved, and are not described herein again.
Example five:
in one embodiment of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of an air conditioner as set forth in any one of the above.
In this embodiment, the computer program is executed by the processor to implement the steps of the control method of the air conditioner as described in any one of the above embodiments, so that all the beneficial technical effects of the control method of the air conditioner are achieved, and are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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 processor 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 processor 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 should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A method for detecting power of an outdoor unit of an air conditioner, comprising:
configuring a first power of an outdoor fan according to the type of the outdoor fan;
configuring a second power of a reversing component in the outdoor unit according to the working mode of the air conditioner;
and configuring the power of the outdoor unit according to the first power, the second power and the third power of other power devices.
2. The method as claimed in claim 1, wherein the configuring the first power of the outdoor unit according to the type of the outdoor unit includes:
if the outdoor fan is a direct current fan, configuring the power of the direct current fan according to a power factor correction circuit in the outdoor unit so as to record the power of the direct current fan as the first power;
if the outdoor fan is an alternating current fan, configuring the power of the alternating current fan according to the environmental parameters and/or the input voltage of the alternating current fan and a prestored reference power meter so as to record the power of the alternating current fan as the first power.
3. The method as claimed in claim 2, wherein if the outdoor fan is a dc fan, configuring the power of the dc fan according to a power factor correction circuit in the outdoor unit, comprises:
and if the outdoor fan is a direct current fan, configuring the power of the power factor correction circuit according to the voltage and instantaneous current of the power factor correction circuit, and determining the power of the power factor correction circuit as the power of the direct current fan.
4. The method of claim 2, wherein if the outdoor unit is an ac fan, configuring the power of the ac fan according to the environmental parameters and/or the input voltage of the ac fan and a pre-stored reference power table, specifically comprises:
weighting the environmental parameters of the alternating current fan to obtain weighted processing parameters;
and determining a query result of the reference power table according to the weighting processing parameter and the input voltage of the alternating-current fan, and determining the power of the alternating-current fan.
5. The method as claimed in claim 1, wherein the configuring the second power of the outdoor unit of the air conditioner according to the operation mode of the air conditioner comprises:
if the air conditioner is in a heating mode, determining that the reversing assembly is in an operating state, configuring the power of the reversing assembly according to the input voltage of the reversing assembly and a preset evaluation mode, and recording the power as the second power;
and if the air conditioner is in a cooling mode, determining that the reversing assembly is in a power-off state so as to configure the power of the reversing assembly to be 0.
6. The method as claimed in claim 5, wherein the configuring the power of the reversing element according to the input voltage of the reversing element and a predetermined evaluation mode comprises:
the reversing assembly comprises an induction electromagnetic coil, loss parameters of the induction electromagnetic coil are determined, and the loss calculation formula corresponding to the loss parameters and the loss parameters is determined as the preset power detection mode.
7. The method as claimed in claim 5, wherein the configuring the power of the reversing element according to the input voltage of the reversing element and a predetermined evaluation mode comprises:
and determining a preset query library of the reversing assembly, and determining the mode of querying corresponding information in the preset query library according to the input voltage as the preset power detection mode.
8. The method as claimed in any one of claims 1 to 7, wherein the configuring the power of the outdoor unit according to the first power configuration mode, the second power configuration mode and a third power of other power devices comprises:
detecting whether the current power grid frequency is a reference frequency;
if the power grid frequency is not the reference frequency, generating a conversion parameter according to the relation between the power grid frequency and the reference frequency so as to convert the configured power of the outdoor unit into the target power of the outdoor unit.
9. The method for detecting power of an outdoor unit of an air conditioner according to any one of claims 1 to 7, further comprising:
the third power comprises the configuration of rectifier bridge stack power, the configuration of common mode inductance power, the configuration of fuse power and line loss configuration in the outdoor unit.
10. The method for detecting power of an outdoor unit of an air conditioner according to any one of claims 1 to 7, further comprising:
and performing a filtering operation on the configured power of the outdoor unit to generate a target power of the outdoor unit.
11. A power detecting device of an outdoor unit of an air conditioner, comprising: a memory and a processor;
the memory for storing program code;
the processor for calling the program code to perform the power detection method of the outdoor unit of an air conditioner according to any one of claims 1 to 10.
12. An air conditioner, comprising:
the power sensing apparatus of an outdoor unit of an air conditioner according to claim 11.
13. A computer-readable storage medium having an operation control program stored thereon, wherein the operation control program, when executed by a processor, implements the power detection method of an outdoor unit for an air conditioner according to any one of claims 1 to 10.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432310A (en) * | 2020-10-23 | 2021-03-02 | 珠海格力电器股份有限公司 | Power factor calibration system, method, processor, compressor, air conditioner and medium |
| CN113551365A (en) * | 2021-07-30 | 2021-10-26 | 佛山市顺德区美的电子科技有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007199379A (en) * | 2006-01-26 | 2007-08-09 | Kyocera Mita Corp | Image forming apparatus |
| CN101277087A (en) * | 2008-05-13 | 2008-10-01 | 上海聚新电子科技有限公司 | Brushless DC motor controller for fan in air conditioner end equipment and control method |
| CN201489935U (en) * | 2009-07-30 | 2010-05-26 | 浙江盾安禾田金属有限公司 | Electromagnetic coil and electromagnetic four-way reversing valve |
| CN105276758A (en) * | 2014-07-25 | 2016-01-27 | 海信（山东）空调有限公司 | Method and device for estimating power consumption of variable-frequency air conditioner |
| CN105571044A (en) * | 2014-10-09 | 2016-05-11 | 青岛海尔空调电子有限公司 | Control method for variable frequency air conditioner |
| CN106871354A (en) * | 2017-02-22 | 2017-06-20 | 海信（广东）空调有限公司 | The Poewr control method and system of a kind of convertible frequency air-conditioner |
| CN107560219A (en) * | 2017-09-21 | 2018-01-09 | 海信（山东）空调有限公司 | Heating and air conditioner and its control method |
| CN108072153A (en) * | 2017-12-06 | 2018-05-25 | 广东美的制冷设备有限公司 | Control method, radiation air-conditioner and the storage medium of radiation air-conditioner |
| CN108444052A (en) * | 2018-02-28 | 2018-08-24 | 平安科技（深圳）有限公司 | A kind of control method and air-conditioning of air-conditioning |
| CN109374963A (en) * | 2018-09-30 | 2019-02-22 | 四川长虹空调有限公司 | A kind of air-conditioning voltameter calculation method |
| CN209385721U (en) * | 2019-01-16 | 2019-09-13 | 珠海格力电器股份有限公司 | Pilot valve, reversal valve and air conditioner |
-
2019
- 2019-10-09 CN CN201910954259.2A patent/CN110658380B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007199379A (en) * | 2006-01-26 | 2007-08-09 | Kyocera Mita Corp | Image forming apparatus |
| CN101277087A (en) * | 2008-05-13 | 2008-10-01 | 上海聚新电子科技有限公司 | Brushless DC motor controller for fan in air conditioner end equipment and control method |
| CN201489935U (en) * | 2009-07-30 | 2010-05-26 | 浙江盾安禾田金属有限公司 | Electromagnetic coil and electromagnetic four-way reversing valve |
| CN105276758A (en) * | 2014-07-25 | 2016-01-27 | 海信（山东）空调有限公司 | Method and device for estimating power consumption of variable-frequency air conditioner |
| CN105571044A (en) * | 2014-10-09 | 2016-05-11 | 青岛海尔空调电子有限公司 | Control method for variable frequency air conditioner |
| CN106871354A (en) * | 2017-02-22 | 2017-06-20 | 海信（广东）空调有限公司 | The Poewr control method and system of a kind of convertible frequency air-conditioner |
| CN107560219A (en) * | 2017-09-21 | 2018-01-09 | 海信（山东）空调有限公司 | Heating and air conditioner and its control method |
| CN108072153A (en) * | 2017-12-06 | 2018-05-25 | 广东美的制冷设备有限公司 | Control method, radiation air-conditioner and the storage medium of radiation air-conditioner |
| CN108444052A (en) * | 2018-02-28 | 2018-08-24 | 平安科技（深圳）有限公司 | A kind of control method and air-conditioning of air-conditioning |
| CN109374963A (en) * | 2018-09-30 | 2019-02-22 | 四川长虹空调有限公司 | A kind of air-conditioning voltameter calculation method |
| CN209385721U (en) * | 2019-01-16 | 2019-09-13 | 珠海格力电器股份有限公司 | Pilot valve, reversal valve and air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432310A (en) * | 2020-10-23 | 2021-03-02 | 珠海格力电器股份有限公司 | Power factor calibration system, method, processor, compressor, air conditioner and medium |
| CN113551365A (en) * | 2021-07-30 | 2021-10-26 | 佛山市顺德区美的电子科技有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
| CN113551365B (en) * | 2021-07-30 | 2022-09-27 | 佛山市顺德区美的电子科技有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
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|---|---|
| CN110658380B (en) | 2021-09-28 |
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