CN108317696B - Control method and device of air conditioner and computer readable storage medium - Google Patents
Control method and device of air conditioner and computer readable storage medium Download PDFInfo
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- CN108317696B CN108317696B CN201810143904.8A CN201810143904A CN108317696B CN 108317696 B CN108317696 B CN 108317696B CN 201810143904 A CN201810143904 A CN 201810143904A CN 108317696 B CN108317696 B CN 108317696B
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Abstract
The invention discloses a control method of an air conditioner, which comprises the following steps: receiving a starting instruction of an air conditioner outdoor fan and controlling the air conditioner outdoor fan to start; after an air conditioner outdoor fan is started, acquiring a frequency conversion rule of an input power supply of the air conditioner outdoor fan; determining a switching frequency regulation rule of the outdoor fan of the air conditioner according to a frequency conversion rule of an input power supply of the outdoor fan of the air conditioner; and controlling the outdoor fan of the air conditioner to operate in a variable frequency mode according to the switching frequency adjustment rule. The invention also discloses a control device of the air conditioner and a computer readable storage medium. The invention provides a control mode for the operation of an air conditioner, which effectively staggers electromagnetic interference and enables the air conditioner to pass an EMI test smoothly when an alternating current speed-adjustable fan is used.
Description
Technical Field
The present invention relates to the field of household appliance technologies, and in particular, to a method and an apparatus for controlling an air conditioner, and a computer-readable storage medium.
Background
Currently, the air conditioner can be controlled according to the user's needs, for example, according to the user sending a control instruction through a remote control device, the set temperature, the wind speed and/or the wind guiding angle of the air conditioner are controlled. The operation of the air conditioner can also be automatically controlled according to the acquired user and environmental parameters.
The outdoor fan of the air conditioner can adopt an alternating current fan or a direct current fan, and the direct current fan can realize the stepless speed regulation of the fan through frequency conversion speed regulation, can improve the energy efficiency of an air conditioning system and is generally used in an air conditioner with high energy efficiency; however, this method greatly increases the cost of the air conditioning system. The alternating current fan is low in cost, meanwhile, the step speed regulation can be realized by adding the middle tap, but the process of the fan motor is complex and the cost is increased by adding the middle tap. The low-cost stepless speed regulation of the alternating-current fan can be realized by simply regulating the duty ratio through the voltage regulation and the speed regulation of the alternating-current fan. However, in the process of using the ac variable speed fan, due to the high-speed switching of the power device, external electromagnetic interference may be generated, which makes it difficult to pass the EMI test.
In summary, in the current speed regulation process of the alternating current fan, external electromagnetic interference can be formed, and the EMI test is difficult to pass.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method and a control device of an air conditioner and a computer readable storage medium, and aims to solve the technical problem that an EMI test is difficult to pass due to external electromagnetic interference formed in the speed regulation process of an alternating current fan at present.
In order to achieve the above object, an aspect of the present invention provides a control method of an air conditioner, including the steps of:
receiving a starting instruction of an air conditioner outdoor fan and controlling the air conditioner outdoor fan to start;
after an air conditioner outdoor fan is started, acquiring a frequency conversion rule of an input power supply of the air conditioner outdoor fan;
determining a switching frequency regulation rule of the outdoor fan of the air conditioner according to a frequency conversion rule of an input power supply of the outdoor fan of the air conditioner;
and controlling the outdoor fan of the air conditioner to operate in a variable frequency mode according to the switching frequency adjustment rule.
Preferably, the switching frequency adjustment rule is a change rule of the switching frequency in a switching frequency adjustment period during an operation of the outdoor unit of the air conditioner.
Preferably, the step of determining the switching frequency adjustment rule of the outdoor air conditioner according to the frequency conversion rule of the input power of the outdoor air conditioner comprises:
determining the switching frequency adjustment period of the outdoor fan of the air conditioner according to the frequency conversion period of the input power supply of the outdoor fan of the air conditioner;
and determining the change rule of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjusting period according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner in the frequency conversion period.
Preferably, the frequency conversion period is the same as the switching frequency adjustment period of the outdoor fan of the air conditioner; the change rule of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjusting period is opposite to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner in the frequency conversion period.
Preferably, the step of determining a variation law of the switching frequency of the outdoor air conditioner in the switching frequency adjustment period according to a frequency conversion law of the input power of the outdoor air conditioner in the frequency conversion period includes:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner in real time or at regular time;
determining a zero frequency value, a maximum frequency value and a minimum frequency value of the switching frequency according to the zero voltage value and the peak voltage value;
and determining the change rule of the switching frequency in the switching frequency adjustment period according to the zero frequency value, the maximum frequency value and the minimum frequency value of the switching frequency.
Preferably, the variation law of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjustment period may also be a sinusoidal variation law in the switching frequency adjustment period; or a cosine change law within the switching frequency adjustment period.
Preferably, the step of controlling the variable frequency operation of the outdoor fan of the air conditioner according to the switching frequency adjustment rule includes:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner;
determining a current voltage phase angle according to the zero-crossing point voltage value and the peak voltage value;
and calculating the current switching frequency according to the current voltage phase angle, and controlling the outdoor fan of the air conditioner to operate according to the current switching frequency.
In addition, to achieve the above object, another aspect of the present invention provides an apparatus, including: the air conditioner control program is stored on the memory and can run on the processor, and when being executed by the processor, the air conditioner control program realizes the control method of the air conditioner.
Optionally, the device is an air conditioner.
Further, to achieve the above object, another aspect of the present invention also provides a computer-readable storage medium having stored thereon an air conditioner control program, which when executed by a processor, implements the control method of an air conditioner as described above.
According to the invention, after the air conditioner is started and the outdoor fan is started, the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner is obtained, the switching frequency regulation rule of the outdoor fan of the air conditioner is further determined according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, and the switching frequency of the outdoor fan of the air conditioner is subjected to frequency conversion operation according to the switching frequency regulation rule so as to control the switching frequency of the outdoor fan of the air conditioner to be changed all the time.
Drawings
Fig. 1 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a flow chart illustrating a control method of an air conditioner according to a second embodiment of the present invention;
FIG. 4 is a flow chart illustrating a control method of an air conditioner according to a third embodiment of the present invention;
FIG. 5 is a flow chart illustrating a control method of an air conditioner according to a fourth embodiment of the present invention;
fig. 6 is a schematic control flow chart illustrating the control of the air conditioner according to an embodiment of the present invention.
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
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: receiving a starting instruction of the outdoor fan of the air conditioner, and controlling the starting of the outdoor fan of the air conditioner; after an air conditioner outdoor fan is started, acquiring a frequency conversion rule of an input power supply of the air conditioner outdoor fan; determining a switching frequency regulation rule of the outdoor fan of the air conditioner according to a frequency conversion rule of an input power supply of the outdoor fan of the air conditioner; and controlling the outdoor fan of the air conditioner to operate in a variable frequency mode according to the switching frequency adjustment rule.
Because the current outdoor fan of the air conditioner regulates the speed by regulating the voltage of the alternating current fan, the low-cost stepless speed regulation of the alternating current fan can be realized by simply regulating the duty ratio. However, in the process of using the ac variable speed fan, due to the high-speed switching of the power device, external electromagnetic interference may be generated, which makes it difficult to pass the EMI test.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The device of the embodiment of the invention can be an air conditioner, and can also be control equipment such as a PC, a smart phone, a tablet personal computer, a portable computer, a remote controller and the like connected with the air conditioner. When other equipment is arranged outside the air conditioner, the other equipment is started through the air conditioner outdoor fan, the bus voltage of the direct current bus is obtained in the running process of the compressor, the bus voltage is judged in advance to control the air conditioner to run, and then the air conditioner is controlled to stop running after the bus voltage exceeds a set first preset voltage value.
As shown in fig. 1, the apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the device may also include a camera, RF (Radio Frequency) circuitry, sensors, audio circuitry, WiFi modules, detectors (magnetic ring + hall sensor), and the like. Such as image sensors, infrared sensors, and other sensors. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), detect the magnitude and direction of gravity when the device is stationary, and can be used for applications of recognizing the posture of the device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping) and the like; of course, the device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and a temperature sensor, which are not described herein again.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting of the apparatus, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and an air conditioner control application program.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call the air conditioner control application stored in the memory 1005 and perform the following operations:
receiving a starting instruction of an air conditioner outdoor fan and controlling the air conditioner outdoor fan to start;
after an air conditioner outdoor fan is started, acquiring a frequency conversion rule of an input power supply of the air conditioner outdoor fan;
determining a switching frequency regulation rule of the outdoor fan of the air conditioner according to a frequency conversion rule of an input power supply of the outdoor fan of the air conditioner;
and controlling the outdoor fan of the air conditioner to operate in a variable frequency mode according to the switching frequency adjustment rule.
Further, the processor 1001 may be configured to call an air conditioner control application stored in the memory 1005, and perform the following operations:
determining the switching frequency adjustment period of the outdoor fan of the air conditioner according to the frequency conversion period of the input power supply of the outdoor fan of the air conditioner;
and determining the change rule of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjusting period according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner in the frequency conversion period.
Further, the processor 1001 may be configured to call an air conditioner control application stored in the memory 1005, and perform the following operations:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner in real time or at regular time;
determining a zero frequency value, a maximum frequency value and a minimum frequency value of the switching frequency according to the zero voltage value and the peak voltage value;
and determining the change rule of the switching frequency in the switching frequency adjustment period according to the zero frequency value, the maximum frequency value and the minimum frequency value of the switching frequency.
Further, the processor 1001 may be configured to call an air conditioner control application stored in the memory 1005, and perform the following operations:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner;
determining a current voltage phase angle according to the zero-crossing point voltage value and the peak voltage value;
and calculating the current switching frequency according to the current voltage phase angle, and controlling the outdoor fan of the air conditioner to operate according to the current switching frequency.
Referring to fig. 2, a first embodiment of the present invention provides a control method of an air conditioner, including:
step S10, receiving a starting instruction of the outdoor fan of the air conditioner, and controlling the outdoor fan of the air conditioner to start;
in this embodiment, the device is an air conditioner, the air conditioner operates according to an instruction of a user, or automatically starts to operate according to a parameter set in advance, and the operating parameter can be adjusted according to an environmental condition or an instruction required by the user during the operation. Of course, the air conditioner can also automatically control the operation of the air conditioner by setting a detection device to detect environmental parameters and user conditions, and automatically setting the operating temperature, the air guide angle and/or the air speed of the air conditioner.
After the air conditioner is started or in the running process of the air conditioner, receiving a starting instruction of the outdoor fan of the air conditioner and controlling the outdoor fan of the air conditioner to start.
The outdoor fan is not necessarily continuously opened in the operation process of the air conditioner, and the fan of the outdoor unit can be automatically or passively opened according to actual requirements and the operation stage of the air conditioner.
Step S20, after the outdoor fan of the air conditioner is started, acquiring the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner;
in the embodiment, the fan used by the outdoor fan of the air conditioner is an alternating current fan, and the input power supply connected to the alternating current fan is alternating current, so that the input power supply of the outdoor fan of the air conditioner is input in a variable frequency mode within a preset or fixed period in the operation process of the outdoor fan of the air conditioner. In this embodiment, after the air conditioner outdoor fan is started, the frequency conversion rule of the input power supply of the air conditioner outdoor fan can be directly determined according to the specification of each air conditioner outdoor fan; or, the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner can be preset by demand, and the preset frequency conversion rule of the input power supply of the outdoor fan of the air conditioner can be directly obtained after the outdoor fan of the air conditioner is started; or, a current or voltage detection device is arranged on the air conditioner outdoor fan, and the frequency conversion period of the input power supply of the air conditioner outdoor fan is determined according to the detected current or voltage change rule of the input power supply by detecting the current or voltage of the input power supply of the air conditioner outdoor fan in real time or at regular time.
Step S30, determining the regulation rule of the switching frequency of the outdoor fan of the air conditioner according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner;
the switching frequency adjustment rule is a switching frequency variation rule in a switching frequency adjustment period during the operation of the outdoor unit of the air conditioner, that is, the switching frequency varies continuously in the adjustment period during the operation of the outdoor unit of the air conditioner. The frequency conversion interval of the switching frequency of the outdoor fan of the air conditioner is preset according to the model number or the requirement of the outdoor fan of the air conditioner, namely, the maximum frequency value and the minimum frequency value of the switching frequency of the outdoor fan of the air conditioner are preset, and the switching frequency of the outdoor fan of the air conditioner is adjusted to be the adjustment of the switching frequency between the maximum frequency value and the minimum frequency value.
In this embodiment, the adjustment rule of the switching frequency of the outdoor fan of the air conditioner may be determined as an adjustment rule that is the same as the frequency conversion rule of the input power of the outdoor fan of the air conditioner, that is, when the switching frequency is adjusted according to the adjustment rule of the switching frequency, the change rule of the switching frequency is the same as the frequency conversion rule of the input power of the outdoor fan of the air conditioner, and it can be understood that the input power of the outdoor fan of the air conditioner is synchronized with the switching frequency.
Alternatively, the adjustment rule of the switching frequency of the outdoor fan of the air conditioner may also be determined as an adjustment rule opposite to the frequency conversion rule of the input power of the outdoor fan of the air conditioner, that is, when the switching frequency is adjusted according to the adjustment rule of the switching frequency, the change rule is opposite to the frequency conversion rule of the input power of the outdoor fan of the air conditioner.
Or, the switching frequency adjustment rule of the outdoor fan of the air conditioner may also be determined as an adjustment rule that is staggered with the frequency conversion rule of the input power of the outdoor fan of the air conditioner, that is, when the switching frequency is adjusted according to the switching frequency adjustment rule, the change rule of the switching frequency is staggered with the frequency conversion rule of the input power of the outdoor fan of the air conditioner, but the change period and the change curve are the same.
And step S40, controlling the frequency conversion operation of the outdoor fan of the air conditioner according to the switching frequency adjustment rule.
And after the switching frequency adjustment rule is determined, controlling the switching frequency of the outdoor fan of the air conditioner to continuously adjust the switching frequency according to the switching frequency adjustment rule, so that the switching frequency of the outdoor fan of the air conditioner is subjected to variable-frequency operation in the operation process. It will be appreciated that the switching frequency is repeatedly varied during the adjustment period of the switching frequency adjustment rule.
In the embodiment, after the air conditioner is started and the outdoor fan is started, the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner is acquired, the switching frequency adjustment rule of the outdoor fan of the air conditioner is determined according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, the switching frequency of the outdoor fan of the air conditioner is subjected to frequency conversion operation according to the switching frequency adjustment rule, so that the switching frequency of the outdoor fan of the air conditioner is controlled to be changed all the time, therefore, the electromagnetic interference is effectively staggered, and when the air conditioner uses the alternating current speed-adjustable fan, the EMI test can.
Referring to fig. 3, a second embodiment of the present invention provides a method for controlling an air conditioner, based on the embodiment shown in fig. 2, wherein the step of determining a switching frequency adjustment rule of the outdoor air conditioner according to a frequency conversion rule of an input power of the outdoor air conditioner includes:
step S310, determining the adjustment period of the switching frequency of the outdoor fan of the air conditioner according to the frequency conversion period of the input power supply of the outdoor fan of the air conditioner;
step S320, determining a variation law of the switching frequency of the outdoor air conditioner in the switching frequency adjustment period according to a frequency conversion law of the input power of the outdoor air conditioner in the frequency conversion period. The step S310 and the step S320 do not limit the sequence, and the sequence may be changed.
The outdoor fan of the air conditioner is an alternating current fan, the input power supply of the outdoor fan is a variable frequency power supply, and after the variable frequency rule of the input power supply of the outdoor fan of the air conditioner is determined, the variable frequency period and the variable frequency rule in the variable frequency period can be determined according to the variable frequency rule of the input power supply of the outdoor fan of the air conditioner.
When the switching frequency regulation rule of the outdoor fan of the air conditioner is the same as the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, the frequency conversion period is the same as the switching frequency regulation period of the outdoor fan of the air conditioner, namely the frequency conversion period of the input power supply of the outdoor fan of the air conditioner is the regulation period of the switching frequency of the outdoor fan of the air conditioner; in the embodiment, the switching frequency adjustment period and the frequency conversion period of the input power supply adopt a synchronous jitter frequency technology, so that interference is staggered, and electromagnetic interference is effectively reduced.
When the switching frequency regulation rule of the outdoor fan of the air conditioner is opposite to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, the frequency conversion period is the same as the switching frequency regulation period of the outdoor fan of the air conditioner, namely the frequency conversion period of the input power supply of the outdoor fan of the air conditioner, and the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner in the frequency conversion period is opposite to the change rule of the input power supply of the outdoor fan of the air conditioner in the switching frequency regulation period.
In this embodiment, preferably, the change rule of the switching frequency of the outdoor air conditioner in the switching frequency adjustment period is opposite to the frequency conversion rule of the input power of the outdoor air conditioner in the frequency conversion period, that is, when the input voltage of the power supply is the maximum, the minimum switching frequency is corresponded, and when the input voltage of the power supply is the minimum, the maximum switching frequency is corresponded, so as to further reduce the electromagnetic interference.
It can be understood that, when the switching frequency regulation rule of the outdoor air conditioner fan is staggered with the frequency conversion rule of the input power of the outdoor air conditioner fan, the frequency conversion period is the same as the switching frequency regulation period of the outdoor air conditioner fan, that is, the frequency conversion period of the input power of the outdoor air conditioner fan is staggered with the change rule of the input power of the outdoor air conditioner fan in the switching frequency regulation period.
In other embodiments, the switching frequency adjustment period is the same as the frequency conversion period of the input power of the outdoor fan of the air conditioner, and the variation law of the switching frequency may be different from the frequency conversion law of the input power of the outdoor fan of the air conditioner, for example, the variation law of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjustment period may also be a sinusoidal variation law in the switching frequency adjustment period; or the cosine change rule in the switching frequency adjustment period, the synchronous jitter frequency technology is adopted by the input power supply and the switching frequency of the outdoor fan of the air conditioner, so that the staggered interference is realized, the electromagnetic interference is reduced, and the change rule of the switching frequency in the switching frequency adjustment period is set.
In this embodiment, the switching frequency adjustment period and the variation law in the switching frequency adjustment period are determined according to the frequency conversion period and the frequency conversion law of the input power source of the outdoor fan of the air conditioner, so that the switching frequency conversion operation is easily adjusted, and the electromagnetic interference is reduced.
Referring to fig. 4, a third embodiment of the present invention provides a method for controlling an air conditioner, based on the embodiment shown in fig. 3, where the step of determining a variation law of a switching frequency of an outdoor fan of the air conditioner in the switching frequency adjustment period according to a frequency conversion law of an input power of the outdoor fan of the air conditioner in the frequency conversion period includes:
step S321, acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner in real time or at regular time;
the air conditioner outdoor fan is an alternating current fan, and an input power supply of the air conditioner outdoor fan continuously changes among a highest value, a lowest value and a zero value in the running process of the air conditioner. And detecting a zero crossing point voltage value and a peak voltage value of the input power supply of the outdoor fan of the air conditioner in real time or at regular time, wherein the peak voltage values are a highest peak voltage value and a lowest peak voltage value. In this embodiment, a voltage detection device is disposed in an outdoor air conditioner, and is controlled to detect a voltage value of an input power supply in real time or at regular time, and when the voltage value is detected to be a zero-crossing voltage value and a peak voltage value, the zero-crossing voltage value and the peak voltage value are obtained.
Step S322, determining a zero frequency value, a maximum frequency value and a minimum frequency value of the switching frequency according to the zero voltage value and the peak voltage value;
step S323, determining a change rule of the switching frequency within the switching frequency adjustment period according to the zero frequency value, the maximum frequency value, and the minimum frequency value of the switching frequency.
In this embodiment, the zero frequency value, the maximum frequency value, and the minimum frequency value of the switching frequency are determined according to the zero voltage value and the peak voltage value of the input power of the outdoor fan of the air conditioner.
When the switching frequency regulation rule of the outdoor fan of the air conditioner is the same as the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, acquiring a zero voltage value and a peak voltage value of the input power supply of the outdoor fan of the air conditioner, wherein the highest peak voltage of the input power supply of the outdoor fan of the air conditioner corresponds to the maximum frequency value of the switching frequency, the lowest peak voltage of the input power supply of the outdoor fan of the air conditioner corresponds to the minimum frequency value of the switching frequency, and the zero voltage value of the input power supply of the outdoor fan of the air conditioner corresponds to the zero frequency value of the switching frequency. Specifically, when the voltage of the input power supply of the outdoor air conditioner runs to the highest peak voltage, the switching frequency is converted to the maximum frequency value, when the voltage of the input power supply of the outdoor air conditioner runs to the minimum peak voltage, the switching frequency is converted to the minimum frequency value, and when the voltage of the input power supply of the outdoor air conditioner runs to the zero voltage value, the switching frequency is converted to the zero frequency value.
Or when the switching frequency adjustment rule of the outdoor fan of the air conditioner is opposite to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, after acquiring a zero voltage value and a peak voltage value of the input power supply of the outdoor fan of the air conditioner, the highest peak voltage value corresponds to the minimum frequency value of the switching frequency, the lowest peak voltage value corresponds to the maximum frequency value of the switching frequency, and the zero voltage value corresponds to the zero frequency value of the switching frequency. Specifically, when the voltage of the input power supply of the outdoor air conditioner runs to the highest peak voltage, the switching frequency is converted to the minimum frequency value, when the voltage of the input power supply of the outdoor air conditioner runs to the lowest peak voltage, the switching frequency is converted to the maximum frequency value, and when the voltage of the input power supply of the outdoor air conditioner runs to the zero voltage value, the switching frequency is converted to the zero frequency value.
Or when the switching frequency regulation rule of the outdoor fan of the air conditioner is staggered with the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, after acquiring a zero voltage value and a peak voltage value of the input power supply of the outdoor fan of the air conditioner, the peak voltage value corresponds to a zero frequency value of the switching frequency, and the zero voltage value corresponds to a maximum frequency value or a minimum frequency value of the switching frequency. Specifically, when the voltage of the input power supply of the outdoor air conditioner runs to a peak voltage value, the switching frequency is converted to a zero frequency value, and when the voltage of the input power supply of the outdoor air conditioner runs to the zero voltage value, the switching frequency is converted to a maximum frequency value or a minimum frequency value.
After the maximum frequency value, the zero frequency value and the position of the minimum frequency value of the switching frequency are determined, the switching frequency change rule of the switching frequency in the switching frequency adjustment period is determined according to the relationship among the maximum frequency value, the zero frequency value and the minimum frequency value.
In this embodiment, the variation rule of the switching frequency is determined according to the voltage frequency conversion rule of the input power of the outdoor fan of the air conditioner, and the electromagnetic interference is further staggered on the basis of reducing the electromagnetic interference due to the synchronous frequency jittering of the power supply, so that the EMI of the air conditioner can pass the test more easily.
Referring to fig. 5, a fourth embodiment of the present invention further provides a method for controlling an air conditioner, based on all the above embodiments, the step of controlling the variable frequency operation of the outdoor fan of the air conditioner according to the switching frequency adjustment rule includes:
step S410, obtaining a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner;
step S420, determining a current voltage phase angle according to the zero-crossing point voltage value and the peak voltage value;
and step S430, calculating the current switching frequency according to the current voltage phase angle, and controlling the outdoor fan of the air conditioner to operate according to the current switching frequency.
The switching frequency adjustment rule of the outdoor fan of the air conditioner is determined according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner, and specifically, the switching frequency adjustment rule can be determined to be the same as, opposite to or staggered with the frequency conversion rule of the input power supply. After the relation between the switching frequency adjustment rule and the frequency conversion rule of the input power supply is determined, in a specific operation process, the voltage phase angle of a current operation node can be determined by acquiring the zero-crossing point voltage value and the peak voltage value of the input power supply of the outdoor fan of the air conditioner and the positions and the sizes of the zero-crossing point voltage and the peak voltage, and then the current switching frequency of the extreme of the current voltage phase angle is sensed so as to control the switching frequency of the air conditioner to be converted to the current switching frequency.
In the embodiment, in the operation process of the outdoor fan of the air conditioner, the current switching frequency is calculated by obtaining the zero-crossing point voltage value and the peak voltage value of the input power supply of the outdoor fan of the air conditioner and then calculating the current voltage phase angle, so as to control the outdoor fan of the air conditioner to operate according to the current switching frequency.
It can be understood that, the method of controlling the frequency conversion operation of the outdoor fan of the air conditioner according to the switching frequency adjustment rule may further specifically obtain the switching frequency adjustment rule according to the third embodiment, and form the change curve of the switching frequency in advance, and in the process of controlling the frequency conversion operation of the switching frequency, the outdoor fan of the air conditioner may directly operate according to the change curve of the switching frequency, and the control method ensures that the frequency conversion rule of the switching frequency is relatively stable.
To better describe the embodiment of the present invention, referring to fig. 6, the process of air conditioner control includes:
the air conditioner runs, receives a fan starting command and starts a fan;
the method comprises the steps of inputting voltage zero crossing points and wave crest detection, specifically inputting voltage zero crossing points and wave crest detection commands manually, and executing voltage zero crossing point and wave crest detection commands immediately after starting a fan in advance;
estimating a voltage phase angle, specifically calculating a voltage change rule according to a voltage zero-crossing point value, the operation time or the operation position when the zero-crossing point value is detected, a wave peak value and the operation time or the operation position when the wave peak value is detected, and further estimating the voltage phase angle of the current position according to the change rule;
and calculating the output switching frequency according to the voltage phase angle, specifically calculating the running frequency of the switching frequency at the current position according to the voltage phase angle and the relation between the switching frequency and the input voltage of the power supply, namely, the switching frequency is converted to the switching frequency value at the current position so as to control the switching frequency to be converted to the switching frequency value.
The present invention also provides an apparatus, comprising: the air conditioner control program is stored on the memory and can run on the processor, and when being executed by the processor, the air conditioner control program realizes the control method of the air conditioner. The device can be an air conditioner, and can also be other equipment for controlling the air conditioner.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where an air conditioner control program is stored on the computer-readable storage medium, and when executed by the processor, the air conditioner control program implements the following operations:
receiving a starting instruction of an air conditioner outdoor fan and controlling the air conditioner outdoor fan to start;
after an air conditioner outdoor fan is started, acquiring a frequency conversion rule of an input power supply of the air conditioner outdoor fan;
determining a switching frequency regulation rule of the outdoor fan of the air conditioner according to a frequency conversion rule of an input power supply of the outdoor fan of the air conditioner;
and controlling the outdoor fan of the air conditioner to operate in a variable frequency mode according to the switching frequency adjustment rule.
Further, the air conditioner control program, when executed by the processor, implements the following operations:
determining the switching frequency adjustment period of the outdoor fan of the air conditioner according to the frequency conversion period of the input power supply of the outdoor fan of the air conditioner;
and determining the change rule of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjusting period according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner in the frequency conversion period.
Further, the air conditioner control program, when executed by the processor, implements the following operations:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner in real time or at regular time;
determining a zero frequency value, a maximum frequency value and a minimum frequency value of the switching frequency according to the zero voltage value and the peak voltage value;
and determining the change rule of the switching frequency in the switching frequency adjustment period according to the zero frequency value, the maximum frequency value and the minimum frequency value of the switching frequency.
Further, the air conditioner control program, when executed by the processor, implements the following operations:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner;
determining a current voltage phase angle according to the zero-crossing point voltage value and the peak voltage value;
and calculating the current switching frequency according to the current voltage phase angle, and controlling the outdoor fan of the air conditioner to operate according to the current switching frequency.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a readable storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above, and includes several instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A control method of an air conditioner is characterized by comprising the following steps:
receiving a starting instruction of an air conditioner outdoor fan and controlling the air conditioner outdoor fan to start;
after an air conditioner outdoor fan is started, acquiring a frequency conversion rule of an input power supply of the air conditioner outdoor fan;
determining the switching frequency adjustment period of the outdoor fan of the air conditioner according to the frequency conversion period of the input power supply of the outdoor fan of the air conditioner;
determining the change rule of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjustment period according to the frequency conversion rule of the input power supply of the outdoor fan of the air conditioner in the frequency conversion period; wherein, the change rule of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjustment period is the switching frequency adjustment rule of the outdoor fan of the air conditioner, the frequency conversion period of the input power supply is the same as the switching frequency adjustment period of the outdoor fan of the air conditioner, and the change rule of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjustment period is the same as the frequency conversion rule of the input power supply, or opposite to the frequency conversion rule of the input power supply, or is staggered with the frequency conversion rule of the input power supply;
and controlling the outdoor fan of the air conditioner to operate in a variable frequency mode according to the switching frequency adjustment rule.
2. The method as claimed in claim 1, wherein the step of determining a variation law of the switching frequency of the outdoor air conditioner during the switching frequency adjustment period according to the frequency conversion law of the input power of the outdoor air conditioner during the frequency conversion period comprises:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner in real time or at regular time;
determining a zero frequency value, a maximum frequency value and a minimum frequency value of the switching frequency according to the zero voltage value and the peak voltage value;
and determining the change rule of the switching frequency in the switching frequency adjustment period according to the zero frequency value, the maximum frequency value and the minimum frequency value of the switching frequency.
3. The method as claimed in claim 1, wherein the variation law of the switching frequency of the outdoor fan of the air conditioner in the switching frequency adjustment period is a sinusoidal variation law in the switching frequency adjustment period; or a cosine change law within the switching frequency adjustment period.
4. The method as claimed in any one of claims 1 to 3, wherein the step of controlling the variable frequency operation of the outdoor fan of the air conditioner according to the switching frequency adjustment rule comprises:
acquiring a zero crossing point voltage value and a peak voltage value of an input power supply of the outdoor fan of the air conditioner;
determining a current voltage phase angle according to the zero-crossing point voltage value and the peak voltage value;
and calculating the current switching frequency according to the current voltage phase angle, and controlling the outdoor fan of the air conditioner to operate according to the current switching frequency.
5. A control apparatus of an air conditioner, comprising: a memory and a processor and an air conditioner control program stored on the memory and executable on the processor, the air conditioner control program implementing a control method of an air conditioner according to any one of claims 1 to 4 when executed by the processor.
6. A computer-readable storage medium, characterized in that an air conditioner control program is stored thereon, which, when executed by a processor, implements the control method of an air conditioner according to any one of claims 1 to 4.
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| CN109802557B (en) * | 2019-01-04 | 2021-01-29 | 加码技术有限公司 | Soft start and power regulation method and device for variable frequency power supply |
| CN110260525B (en) * | 2019-06-10 | 2021-09-17 | 广东海悟科技有限公司 | Control method and device of fan and computer readable storage medium |
| CN111092547A (en) * | 2019-12-13 | 2020-05-01 | 珠海格力电器股份有限公司 | PFC (Power factor correction) jitter frequency control method, system and electric appliance |
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