CN106481537B - Control method, device and the household electrical appliance of compressor - Google Patents
Control method, device and the household electrical appliance of compressor Download PDFInfo
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- CN106481537B CN106481537B CN201611062769.1A CN201611062769A CN106481537B CN 106481537 B CN106481537 B CN 106481537B CN 201611062769 A CN201611062769 A CN 201611062769A CN 106481537 B CN106481537 B CN 106481537B
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- running frequency
- temperature threshold
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of control method of compressor, device and household electrical appliance, the described method comprises the following steps：The temperature of heating device in the input circuit of compressor is obtained, and obtains operating temperature threshold corresponding with heating device；The running frequency of compressor is adjusted according to the temperature of heating device and operating temperature threshold corresponding with heating device.Thus by the adjusting to compressor operating frequency, to achieve the purpose that reduce the temperature of heating device in input circuit and reduce input current.
Description
Technical field
The present invention relates to motor control technology field, in particular to a kind of control method of compressor, a kind of compressor
Control device and a kind of household electrical appliance with the device.
Background technique
In single phase alternating current power supply input system such as domestic air conditioning, the single phase alternating current power supply from power grid is usually first passed through
After uncontrollable full bridge rectifier, using PFC (Power Factor Correction, PFC) circuit output
DC power supply, and it is connected to big capacity electrolyte capacitor and load (such as compressor, blower, internal switch power supply etc.).
Wherein, pfc circuit can use typical Boost type pfc circuit, not only can achieve higher power factor,
And can boost and export steady dc voltage, to provide stable DC source to load.In this way, working as single-phase alternating current
When the alternating voltage of source input system is lower, due to the boosting of pfc circuit, DC bus-bar voltage still can achieve higher
Amplitude, so that compressor runs to upper frequency.It is defeated when alternating voltage amplitude is lower but when normal compared to alternating voltage
The amplitude entered to the input current of pfc circuit will increase, so that the device heating in input circuit is serious.Particularly with using friendship
For the air-conditioning system that flow fan radiates, the revolving speed of AC blower fan is reduced with the decline of alternating voltage amplitude, thus
So that the heat-sinking capability of air-conditioning system reduces, cause the device heating in input circuit even more serious.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of control method of compressor, defeated to reach reduction by the adjusting to compressor operating frequency
Enter the purpose of the temperature of heating device and reduction input current in circuit.
It is another object of the present invention to the control devices for proposing a kind of compressor.
Yet another object of the invention is that proposing a kind of household electrical appliance.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of control method of compressor, including following
Step：The temperature of heating device in the input circuit of compressor is obtained, and obtains work temperature corresponding with the heating device
Spend threshold value；And according to the temperature of the heating device and operating temperature threshold corresponding with the heating device to the pressure
The running frequency of contracting machine is adjusted.
The control method of compressor according to an embodiment of the present invention obtains compressor during the operation of the compressor in real time
Input circuit in heating device temperature, and corresponding with heating device operating temperature threshold is obtained, then according to fever
The running frequency of compressor is adjusted in the temperature of device and operating temperature threshold corresponding with heating device.To pass through
Adjusting to compressor operating frequency, to reach the mesh for reducing the temperature of heating device and reduction input current in input circuit
's.
In an embodiment of the present invention, when the input circuit uses passive power factor correction pfc circuit, the hair
Thermal device includes one of common mode inductance, rectifier bridge, PFC inductance, diode and electrolytic capacitor or a variety of；When the input electricity
When road uses Boost type pfc circuit, the heating device includes common mode inductance, rectifier bridge, PFC inductance, power switch tube, two
One of pole pipe and electrolytic capacitor are a variety of.
According to one embodiment of present invention, according to the temperature of the heating device and corresponding with the heating device
Operating temperature threshold, when being adjusted using running frequency of the stick control mode to the compressor, wherein when the input
When being greater than the operating temperature threshold there are the temperature of the heating device in circuit, the operation frequency of the compressor is gradually reduced
Rate, until the temperature of the heating device is respectively less than corresponding operating temperature threshold；It sends out described in the input circuit
When the temperature of thermal device is respectively less than corresponding operating temperature threshold, it is stepped up the running frequency of the compressor, until
The running frequency of the compressor reaches target operating frequency.
According to another embodiment of the invention, according to the temperature of the heating device and corresponding with the heating device
Operating temperature threshold, when being adjusted using running frequency of the Hysteresis control mode to the compressor, wherein when described defeated
Enter in circuit there are the temperature of the heating device be greater than the operating temperature threshold when, gradually reduce the operation of the compressor
Frequency, until the temperature of the heating device is respectively less than corresponding operating temperature threshold；Exist when in the input circuit
When the temperature of the heating device is less than the minimum value in temperature corresponding with heating device dead zone, it is stepped up the pressure
The running frequency of contracting machine, until the running frequency of the compressor reaches target operating frequency, wherein the temperature dead zone is most
Big value is the operating temperature threshold；Otherwise, keep the running frequency of the compressor constant.
According to still another embodiment of the invention, according to the temperature of the heating device and corresponding with the heating device
Operating temperature threshold, when being adjusted using running frequency of the proportional plus integral control mode to the compressor, wherein calculate
Difference between the operating temperature threshold of the heating device and the temperature of the heating device；Work to the heating device
Difference between temperature threshold and the temperature of the heating device carries out proportional integration and adjusts to obtain the first value；To described first
Value carries out amplitude limiting processing to obtain the target operating frequency correction value of the compressor；The target operating frequency correction value is folded
It is added to the target operating frequency of the compressor, to obtain the realistic objective running frequency of the compressor.
To achieve the above object, a kind of control device for compressor that another aspect of the present invention embodiment proposes, including：Temperature
Degree obtains module, the temperature of heating device in the input circuit for obtaining compressor；Control module, the control module and institute
Temperature acquisition module to be stated to be connected, the control module is used to obtain operating temperature threshold corresponding with the heating device, and
Operation according to the temperature of the heating device and operating temperature threshold corresponding with the heating device to the compressor
Frequency is adjusted.
The control device of compressor according to an embodiment of the present invention, during the operation of the compressor, temperature acquisition module are real
When obtain the temperature of heating device in the input circuit of compressor, control module obtains corresponding with heating device operating temperature
Threshold value, and according to the temperature of heating device and operating temperature threshold corresponding with heating device to the running frequency of compressor into
Row is adjusted.Thus by the adjusting to compressor operating frequency, to reach the temperature of heating device in reduction input circuit and subtract
The purpose of small input current.
According to one embodiment of present invention, when the input circuit uses passive power factor correction pfc circuit, institute
Stating heating device includes one of common mode inductance, rectifier bridge, PFC inductance, diode and electrolytic capacitor or a variety of；When described defeated
When entering circuit using Boost type pfc circuit, the heating device includes common mode inductance, rectifier bridge, PFC inductance, power switch
One of pipe, diode and electrolytic capacitor are a variety of.
According to one embodiment of present invention, the control module according to the temperature of the heating device and with the fever
The corresponding operating temperature threshold of device, when being adjusted using running frequency of the stick control mode to the compressor,
In, when being greater than the operating temperature threshold there are the temperature of the heating device in the input circuit, the control module
The running frequency of the compressor is gradually reduced, until the temperature of the heating device is respectively less than corresponding operating temperature threshold
Value；When the temperature of the heating device described in the input circuit is respectively less than corresponding operating temperature threshold, the control
Module is stepped up the running frequency of the compressor, until the running frequency of the compressor reaches target operating frequency.
According to another embodiment of the invention, the control module according to the temperature of the heating device and with the hair
The corresponding operating temperature threshold of thermal device, when being adjusted using running frequency of the Hysteresis control mode to the compressor,
Wherein, when being greater than the operating temperature threshold there are the temperature of the heating device in the input circuit, the control mould
Block gradually reduces the running frequency of the compressor, until the temperature of the heating device is respectively less than corresponding operating temperature
Threshold value；When there are the temperature of the heating device to be less than temperature corresponding with heating device dead zone in the input circuit
Minimum value when, the control module is stepped up the running frequency of the compressor, until the compressor running frequency
Reach target operating frequency, wherein the maximum value in the temperature dead zone is the operating temperature threshold；Otherwise, the control mould
Block keeps the running frequency of the compressor constant.
According to still another embodiment of the invention, the control module according to the temperature of the heating device and with the hair
The corresponding operating temperature threshold of thermal device is adjusted using running frequency of the proportional plus integral control mode to the compressor
When, the control module includes：Subtracter, for calculating the operating temperature threshold and the heating device of the heating device
Difference between temperature；Proportional and integral controller, for the operating temperature threshold and the heating device to the heating device
Temperature between difference carry out proportional integration adjust to obtain the first value；Clip processor carries out clipping to first value
It handles to obtain the target operating frequency correction value of the compressor；Adder is used for the target operating frequency correction value
Be added to the target operating frequency of the compressor, to obtain the realistic objective running frequency of the compressor.
In addition, the embodiment of the present invention also proposed a kind of household electrical appliance comprising the control device of above-mentioned compressor.
The household electrical appliance of the embodiment of the present invention can be by transporting compressor by the control device of above-mentioned compressor
The adjusting of line frequency, to achieve the purpose that reduce the temperature of heating device in input circuit and reduce input current.
Detailed description of the invention
Fig. 1 is the flow chart of the control method of compressor according to an embodiment of the present invention；
Fig. 2 is the input circuit topological diagram according to an embodiment of the invention using passive PFC circuit；
Fig. 3 is the input circuit topological diagram according to an embodiment of the invention using Boost type pfc circuit；
Fig. 4 is the structural schematic diagram of control module according to an embodiment of the invention；And
Fig. 5 is the control device block diagram of compressor according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The control method of the compressor proposed according to embodiments of the present invention, the control of compressor described with reference to the accompanying drawings
Device and household electrical appliance with the device.
Fig. 1 is the flow chart of the control method of compressor according to an embodiment of the present invention.As shown in Figure 1, the compressor
Control method may include following steps：
S1 obtains the temperature of heating device in the input circuit of compressor, and obtains work corresponding with heating device
Temperature threshold.
In an embodiment of the present invention, when input circuit use passive PFC circuit when, heating device include common mode inductance,
One of rectifier bridge, PFC inductance, diode and electrolytic capacitor are a variety of；When input circuit uses Boost type pfc circuit,
Heating device includes one of common mode inductance, rectifier bridge, PFC inductance, power switch tube, diode and electrolytic capacitor or more
Kind.
Specifically, Fig. 2 is the input circuit topological diagram according to an embodiment of the invention using passive PFC circuit.
Fig. 3 is the input circuit topological diagram according to an embodiment of the invention using Boost type pfc circuit.In Fig. 2, input electricity
Road can be made of common mode inductance, rectifier bridge, passive PFC circuit and electrolytic capacitor, wherein common mode inductance, rectifier bridge, PFC inductance,
Diode and electrolytic capacitor are the main heating device of input circuit.In Fig. 3, input circuit can by common mode inductance, rectifier bridge,
Boost type pfc circuit and electrolytic capacitor are constituted, wherein common mode inductance, rectifier bridge, PFC inductance, power switch tube, diode and
Electrolytic capacitor is the main heating device of input circuit.It, can be by being arranged in each fever during compressor operation
The temperature of temperature sensor real-time collector part on device.
S2, according to the temperature of heating device and operating temperature threshold corresponding with heating device to the operation frequency of compressor
Rate is adjusted.
Specifically, since the practical temperature that can bear of each heating device is different, it can be according to fever
The specifications of device set the operating temperature threshold of heating device, then, according to the temperature of the heating device detected and with
The corresponding operating temperature threshold of heating device is to determine whether need that the running frequency of compressor is adjusted, for example, can
To reduce the running frequency of compressor when the temperature of heating device reaches corresponding operating temperature threshold, to realize reduction
Input current, the purpose for reducing heating device fever in input circuit, when guaranteeing that alternating voltage is lower, input circuit is not in
Overheat protector and overcurrent protection effectively improve the safety and reliability of system.
Specifically, according to one embodiment of present invention, according to the temperature of heating device and corresponding with heating device
Operating temperature threshold, when being adjusted using running frequency of the stick control mode to compressor, wherein when being deposited in input circuit
When the temperature of heating device is greater than operating temperature threshold, the running frequency of compressor is gradually reduced, until the temperature of heating device
Degree is respectively less than corresponding operating temperature threshold；When the temperature of heating device in input circuit is respectively less than corresponding work
When temperature threshold, it is stepped up the running frequency of compressor, until the running frequency of compressor reaches target operating frequency.
Specifically, during compressor operation, passing through temperature sensor real-time detection common mode electricity by taking Fig. 2 as an example
Sense, rectifier bridge, PFC inductance, diode and electrolytic capacitor temperature, and judge whether the temperature of each heating device is greater than respectively
Corresponding operating temperature threshold then gradually decreases compression if there is the temperature of heating device is greater than corresponding operating temperature threshold
The running frequency of machine, until the temperature of all heating devices is respectively less than corresponding operating temperature threshold；Conversely, when heating device
When temperature is respectively less than corresponding operating temperature threshold, then the running frequency of compressor is gradually increased, until the operation frequency of compressor
Rate reaches target operating frequency.To be sent out to reach to reduce in input circuit by the real-time adjusting to compressor operating frequency
Thermal device fever and the purpose for reducing input current.
According to another embodiment of the invention, according to the temperature of heating device and work temperature corresponding with heating device
Threshold value is spent, when being adjusted using running frequency of the Hysteresis control mode to compressor, wherein generate heat when existing in input circuit
When the temperature of device is greater than operating temperature threshold, the running frequency of compressor is gradually reduced, until the temperature of heating device is small
In corresponding operating temperature threshold；When there are the temperature of heating device less than corresponding with heating device in input circuit
When the minimum value in temperature dead zone, it is stepped up the running frequency of compressor, until the running frequency of compressor reaches object run
Frequency, wherein the maximum value in temperature dead zone is operating temperature threshold；Otherwise, keep the running frequency of compressor constant.
Specifically, when the running frequency to compressor is adjusted, it can be dead to each heating device set temperature
Area, wherein the maximum value in temperature dead zone is the operating temperature threshold of heating device.By taking Fig. 2 as an example, in the process of compressor operation
In, by the temperature of temperature sensor real-time detection common mode inductance, rectifier bridge, PFC inductance, diode and electrolytic capacitor, and point
Do not judge whether the temperature of each heating device is greater than corresponding operating temperature threshold.If there is the temperature of heating device is greater than phase
The maximum value in the temperature dead zone answered, i.e. operating temperature threshold then gradually decrease the running frequency of compressor, until all heaters
The temperature of part is respectively less than operating temperature threshold；If there is the temperature of heating device is less than the minimum value in temperature dead zone, then gradually rise
The running frequency of high compressor, until the running frequency of compressor reaches target operating frequency；Otherwise, the current of compressor is kept
Running frequency is constant.To reduce heating device in input circuit to reach by the real-time adjusting to compressor operating frequency
Fever and the purpose for reducing input current, meanwhile, existed by the running frequency that set temperature dead zone can effectively reduce compressor
Frequent switching between raising and reducing.
According to still another embodiment of the invention, according to the temperature of heating device and work temperature corresponding with heating device
Threshold value is spent, when being adjusted using running frequency of the proportional plus integral control mode to compressor, wherein calculate the heating device
Operating temperature threshold and the heating device temperature between difference；To the operating temperature threshold and heater of heating device
Difference between the temperature of part carries out proportional integration and adjusts to obtain the first value；Amplitude limiting processing is carried out to be compressed to the first value
The target operating frequency correction value of machine；Target operating frequency correction value is added to the target operating frequency of compressor, to obtain
The realistic objective running frequency of compressor.
It should be noted that the upper limit value of the amplitude limit link is zero, and lower limit value is when carrying out amplitude limiting processing to the first value
Negative target operating frequency.That is, when the temperature of heating device is less than or equal to operating temperature threshold, target operating frequency
Correction amount is zero, i.e., the target operating frequency of compressor is not adjusted；When the temperature of heating device is greater than operating temperature threshold
When value, target operating frequency correction amount is greater than zero, and the target operating frequency of compressor is adjusted at this time.
Specifically, during compressor operation, passing through temperature sensor real-time detection common mode electricity by taking Fig. 2 as an example
Sense, rectifier bridge, PFC inductance, diode and electrolytic capacitor temperature, then, according to the temperature and phase of the heating device detected
The operating temperature threshold answered is adjusted the running frequency of compressor by proportional integration regulative mode shown in Fig. 4.
For example, during compressor operation, if the temperature of heating device is respectively less than corresponding operating temperature
Threshold value is then zero according to the target operating frequency correction amount that each heating device obtains, does not transport at this time to the target of compressor
Line frequency is modified；If there is the temperature of a heating device is greater than corresponding operating temperature threshold, then pass through proportional integration
A negative target operating frequency correction value is obtained after link and amplitude limiting processing link, then by the target operating frequency correction value
Be added to the target operating frequency of compressor, to obtain the realistic objective running frequency of compressor；If there is at least two fevers
The temperature of device is greater than corresponding operating temperature threshold, then after passing through proportional integration link and amplitude limiting processing, can obtain at least
The realistic objective running frequency of two compressors can choose maximum realistic objective running frequency as final reality at this time
Target operating frequency, also can choose the smallest realistic objective running frequency as final realistic objective running frequency, can also
To select average value as final realistic objective running frequency.To come by the real-time adjusting to compressor operating frequency
Achieve the purpose that reduce heating device fever in input circuit and reduces input current, meanwhile, using proportional integration mode to pressure
The running frequency of contracting machine is adjusted, so that adjusting more quick and precisely.
It should be noted that for the air-conditioning system to be radiated using AC blower fan, although AC blower fan turns
Speed is reduced with the decline of alternating voltage amplitude, so that the heat-sinking capability of air-conditioning system reduces, still, through the above way can
It is enough so that in input circuit the calorific value of heating device reduce, thus even if the revolving speed of AC blower fan declines, will not cause defeated
It is even more serious to enter heating device fever in circuit.
In conclusion the control method of compressor according to an embodiment of the present invention obtains in real time during the operation of the compressor
The temperature of heating device in the input circuit of compressor is taken, and obtains operating temperature threshold corresponding with heating device, then
The running frequency of compressor is adjusted according to the temperature of heating device and operating temperature threshold corresponding with heating device.
To reduce the temperature of heating device and reduction input electricity in input circuit to reach by the adjusting to compressor operating frequency
The purpose of stream.
Fig. 5 is the control device block diagram of compressor according to an embodiment of the invention.As shown in figure 5, the pressure
The control device of contracting machine may include temperature acquisition module 10 and control module 20.
Wherein, temperature acquisition module 10 is used to obtain the temperature of heating device in the input circuit of compressor, control module
20 are connected with temperature acquisition module 10, and control module 20 is for obtaining operating temperature threshold corresponding with heating device, and root
The running frequency of compressor is adjusted according to the temperature and operating temperature threshold corresponding with heating device of heating device.
In an embodiment of the present invention, when input circuit use passive PFC circuit when, heating device include common mode inductance,
One of rectifier bridge, PFC inductance, diode and electrolytic capacitor are a variety of；When input circuit uses Boost type pfc circuit,
Heating device includes one of common mode inductance, rectifier bridge, PFC inductance, power switch tube, diode and electrolytic capacitor or more
Kind.
Specifically, Fig. 2 is the input circuit topological diagram according to an embodiment of the invention using passive PFC circuit.
Fig. 3 is the input circuit topological diagram according to an embodiment of the invention using Boost type pfc circuit.In Fig. 2, input electricity
Road can be made of common mode inductance, rectifier bridge, passive PFC circuit and electrolytic capacitor, wherein common mode inductance, rectifier bridge, PFC inductance,
Diode and electrolytic capacitor are the main heating device of input circuit.In Fig. 3, input circuit can by common mode inductance, rectifier bridge,
Boost type pfc circuit and electrolytic capacitor are constituted, wherein common mode inductance, rectifier bridge, PFC inductance, power switch tube, diode and
Electrolytic capacitor is the main heating device of input circuit.During compressor M operation, temperature acquisition module 10 can pass through
The temperature of temperature sensor real-time collector part on each heating device is set.
Since the practical temperature that can bear of each heating device is different, it can be according to the rule of heating device
Lattice book sets the operating temperature threshold of heating device, and is stored in advance into control module 20, then, control module 20 basis
The temperature of the heating device detected and operating temperature threshold corresponding with heating device are to determine whether need to compressor M
Running frequency be adjusted, for example, can when the temperature of heating device reaches corresponding operating temperature threshold, reduce compression
The running frequency of machine M guarantees exchange to realize the purpose for reducing input current, reducing heating device fever in input circuit
When voltage is lower, input circuit is not in overheat protector and overcurrent protection, effectively improves the safety and reliability of system.
Specifically, according to one embodiment of present invention, control module 20 is according to the temperature and and heater of heating device
The corresponding operating temperature threshold of part, when being adjusted using running frequency of the stick control mode to compressor M, wherein when
When being greater than operating temperature threshold there are the temperature of heating device in input circuit, control module 20 gradually reduces the fortune of compressor M
Line frequency, until the temperature of heating device is respectively less than corresponding operating temperature threshold；When heating device in input circuit
When temperature is respectively less than corresponding operating temperature threshold, control module 20 is stepped up the running frequency of compressor M, until pressure
The running frequency of contracting machine M reaches target operating frequency.
Specifically, during compressor M operation, temperature acquisition module 10 passes through temperature sensor by taking Fig. 2 as an example
The temperature of real-time detection common mode inductance, rectifier bridge, PFC inductance, diode and electrolytic capacitor, control module 20 judge each respectively
Whether the temperature of heating device is greater than corresponding operating temperature threshold, if there is the temperature of heating device is greater than corresponding work temperature
Threshold value is spent, control module 20 then gradually decreases the running frequency of compressor M, until the temperature of all heating devices is respectively less than corresponding
Operating temperature threshold；Conversely, when the temperature of heating device is respectively less than corresponding operating temperature threshold, control module 20 then by
The running frequency of compressor M is gradually improved, until the running frequency of compressor M reaches target operating frequency.To by compression
The real-time adjusting of machine running frequency, to achieve the purpose that reduce heating device fever in input circuit and reduce input current.
According to another embodiment of the invention, control module 20 is according to the temperature of heating device and opposite with heating device
The operating temperature threshold answered, when being adjusted using running frequency of the Hysteresis control mode to compressor M, wherein when input electricity
When being greater than operating temperature threshold there are the temperature of heating device in road, control module 20 gradually reduces the running frequency of compressor M,
Until the temperature of heating device is respectively less than corresponding operating temperature threshold；When the temperature in input circuit there are heating device
Less than temperature corresponding with heating device dead zone minimum value when, control module 20 is stepped up the running frequency of compressor M,
Until the running frequency of compressor M reaches target operating frequency, wherein the maximum value in temperature dead zone is operating temperature threshold；It is no
Then, control module 20 keeps the running frequency of compressor M constant.
Specifically, when the running frequency to compressor M is adjusted, it can be dead to each heating device set temperature
Area, wherein the maximum value in temperature dead zone is the operating temperature threshold of heating device.By taking Fig. 2 as an example, in the mistake of compressor M operation
Cheng Zhong, temperature acquisition module 10 pass through temperature sensor real-time detection common mode inductance, rectifier bridge, PFC inductance, diode and electrolysis
The temperature of capacitor, control module 20 judge whether the temperature of each heating device is greater than corresponding operating temperature threshold respectively.Such as
The maximum value that fruit has the temperature of heating device to be greater than corresponding temperature dead zone, i.e. operating temperature threshold, control module 20 is then gradually
The running frequency of compressor M is reduced, until the temperature of all heating devices is respectively less than operating temperature threshold；If there is heating device
Temperature be less than the minimum value in temperature dead zone, control module 20 is then stepped up the running frequency of compressor M, until compressor M
Running frequency reach target operating frequency；Otherwise, control module 20 keeps the current operation frequency of compressor M constant.To
By the real-time adjusting to compressor operating frequency, heating device fever and reduction input current in input circuit are reduced to reach
Purpose, meanwhile, frequency of the running frequency of compressor between raising and reducing can be effectively reduced by set temperature dead zone
Numerous switching.
According to still another embodiment of the invention, as shown in figure 4, control module 20 according to the temperature of heating device and with hair
The corresponding operating temperature threshold of thermal device, when being adjusted using running frequency of the proportional plus integral control mode to compressor M,
Control module 20 includes：Subtracter 21, proportional and integral controller 22, clip processor 23 and adder 24.Wherein, subtracter 21
For calculating the difference between the operating temperature threshold of heating device and the temperature of heating device；Proportional and integral controller 22 is used for
Operating temperature threshold to heating device and the difference between the temperature of heating device carry out proportional integration and adjust to obtain first
Value；Clip processor 23 carries out amplitude limiting processing to the first value to obtain the target operating frequency correction value of compressor M；Adder 24
For target operating frequency correction value to be added to the target operating frequency of compressor M, to obtain the realistic objective fortune of compressor M
Line frequency.
It should be noted that the upper limit value of limiter 23 is zero, the target operating frequency that lower limit value is negative.That is,
When the temperature of heating device is less than or equal to operating temperature threshold, the target operating frequency correction amount that limiter 23 exports is zero,
The target operating frequency of compressor M is not adjusted；When the temperature of heating device is greater than operating temperature threshold, limiter
The target operating frequency correction amount of 23 outputs is greater than zero, and the target operating frequency of compressor M is adjusted at this time.
Specifically, during compressor M operation, temperature acquisition module 20 passes through temperature sensor by taking Fig. 2 as an example
The temperature of real-time detection common mode inductance, rectifier bridge, PFC inductance, diode and electrolytic capacitor, then, control module 20 is according to inspection
The temperature of the heating device measured and corresponding operating temperature threshold, by proportional integration regulative mode shown in Fig. 4 to compression
The running frequency of machine is adjusted.
For example, during compressor operation, if the temperature of heating device is respectively less than corresponding operating temperature
Threshold value is then zero according to the target operating frequency correction amount that each heating device obtains, does not transport at this time to the target of compressor M
Line frequency is modified；If there is the temperature of a heating device is greater than corresponding operating temperature threshold, then pass through proportional integration
A negative target operating frequency correction value is obtained after adjuster 22 and clip processor 23, then repairs the target operating frequency
On the occasion of the target operating frequency for the compressor M that is added to, to obtain the realistic objective running frequency of compressor M；If there is at least two
The temperature of a heating device is greater than corresponding operating temperature threshold, then passes through proportional and integral controller 22 and clip processor 23
Afterwards, the realistic objective running frequency that can obtain at least two compressors can choose maximum realistic objective operation frequency at this time
Rate also can choose the smallest realistic objective running frequency as final practical mesh as final realistic objective running frequency
Running frequency is marked, also can choose average value as final realistic objective running frequency.To by running frequency to compressor
The real-time adjusting of rate, come achieve the purpose that reduce input circuit in heating device fever and reduce input current, meanwhile, using than
The running frequency of compressor is adjusted in example integral way, so that adjusting more quick and precisely.
It should be noted that for the air-conditioning system to be radiated using AC blower fan, although AC blower fan turns
Speed is reduced with the decline of alternating voltage amplitude, so that the heat-sinking capability of air-conditioning system reduces, still, through the above way can
It is enough so that in input circuit the calorific value of heating device reduce, thus even if the revolving speed of AC blower fan declines, will not cause defeated
It is even more serious to enter heating device fever in circuit.
The control device of compressor according to an embodiment of the present invention, during the operation of the compressor, temperature acquisition module are real
When obtain the temperature of heating device in the input circuit of compressor, control module obtains corresponding with heating device operating temperature
Threshold value, and according to the temperature of heating device and operating temperature threshold corresponding with heating device to the running frequency of compressor into
Row is adjusted.Thus by the adjusting to compressor operating frequency, to reach the temperature of heating device in reduction input circuit and subtract
The purpose of small input current.
In addition, the embodiment of the present invention also proposed a kind of household electrical appliance comprising the control device of above-mentioned compressor.
Wherein, household electrical appliance can be air conditioner, refrigerator etc..
The household electrical appliance of the embodiment of the present invention can be by transporting compressor by the control device of above-mentioned compressor
The adjusting of line frequency, to achieve the purpose that reduce the temperature of heating device in input circuit and reduce input current.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of control method of compressor, which is characterized in that include the following steps：
The temperature of heating device in the input circuit of compressor is obtained, and obtains operating temperature corresponding with the heating device
Threshold value；And
According to the temperature of the heating device and operating temperature threshold corresponding with the heating device to the compressor
Running frequency is adjusted, wherein according to the temperature of the heating device and operating temperature corresponding with the heating device
Threshold value, when being adjusted using running frequency of the stick control mode to the compressor, wherein
When being greater than the operating temperature threshold there are the temperature of the heating device in the input circuit, gradually reduce described
The running frequency of compressor, until the temperature of the heating device is respectively less than corresponding operating temperature threshold；
When the temperature of the heating device described in the input circuit is respectively less than corresponding operating temperature threshold, it is stepped up
The running frequency of the compressor, until the running frequency of the compressor reaches target operating frequency.
2. the control method of compressor as described in claim 1, which is characterized in that
When the input circuit uses passive power factor correction pfc circuit, the heating device includes common mode inductance, rectification
One of bridge, PFC inductance, diode and electrolytic capacitor are a variety of；
When the input circuit uses Boost type pfc circuit, the heating device includes common mode inductance, rectifier bridge, PFC electricity
One of sense, power switch tube, diode and electrolytic capacitor are a variety of.
3. the control method of compressor as claimed in claim 1 or 2, which is characterized in that according to the temperature of the heating device
With operating temperature threshold corresponding with the heating device, using Hysteresis control mode to the running frequency of the compressor into
When row is adjusted, wherein
When being greater than the operating temperature threshold there are the temperature of the heating device in the input circuit, gradually reduce described
The running frequency of compressor, until the temperature of the heating device is respectively less than corresponding operating temperature threshold；
When there are the temperature of the heating device to be less than temperature corresponding with heating device dead zone in the input circuit
Minimum value when, the running frequency of the compressor is stepped up, until the running frequency of the compressor reaches object run
Frequency, wherein the maximum value in the temperature dead zone is the operating temperature threshold；
Otherwise, keep the running frequency of the compressor constant.
4. the control method of compressor as claimed in claim 1 or 2, which is characterized in that according to the temperature of the heating device
With operating temperature threshold corresponding with the heating device, using proportional plus integral control mode to the operation of compressor frequency
When rate is adjusted, wherein
Calculate the difference between the operating temperature threshold of the heating device and the temperature of the heating device；
Operating temperature threshold to the heating device and the difference between the temperature of the heating device carry out proportional integration tune
Section is to obtain the first value；
Amplitude limiting processing is carried out to obtain the target operating frequency correction value of the compressor to first value；
The target operating frequency correction value is added to the target operating frequency of the compressor, to obtain the compressor
Realistic objective running frequency.
5. a kind of control device of compressor, which is characterized in that including：
Temperature acquisition module, the temperature of heating device in the input circuit for obtaining compressor；
Control module, the control module are connected with the temperature acquisition module, and the control module is for obtaining and the hair
The corresponding operating temperature threshold of thermal device, and according to the temperature of the heating device and work corresponding with the heating device
Make temperature threshold the running frequency of the compressor is adjusted, wherein the control module is according to the heating device
Temperature and operating temperature threshold corresponding with the heating device, using stick control mode to the operation frequency of the compressor
When rate is adjusted, wherein
When being greater than the operating temperature threshold there are the temperature of the heating device in the input circuit, the control module
The running frequency of the compressor is gradually reduced, until the temperature of the heating device is respectively less than corresponding operating temperature threshold
Value；
When the temperature of the heating device described in the input circuit is respectively less than corresponding operating temperature threshold, the control
Module is stepped up the running frequency of the compressor, until the running frequency of the compressor reaches target operating frequency.
6. the control device of compressor as claimed in claim 5, which is characterized in that
When the input circuit uses passive power factor correction pfc circuit, the heating device includes common mode inductance, rectification
One of bridge, PFC inductance, diode and electrolytic capacitor are a variety of；
When the input circuit uses Boost type pfc circuit, the heating device includes common mode inductance, rectifier bridge, PFC electricity
One of sense, power switch tube, diode and electrolytic capacitor are a variety of.
7. such as the control device of compressor described in claim 5 or 6, which is characterized in that the control module is according to the hair
The temperature of thermal device and operating temperature threshold corresponding with the heating device, using Hysteresis control mode to the compressor
Running frequency when being adjusted, wherein
When being greater than the operating temperature threshold there are the temperature of the heating device in the input circuit, the control module
The running frequency of the compressor is gradually reduced, until the temperature of the heating device is respectively less than corresponding operating temperature threshold
Value；
When there are the temperature of the heating device to be less than temperature corresponding with heating device dead zone in the input circuit
Minimum value when, the control module is stepped up the running frequency of the compressor, until the compressor running frequency
Reach target operating frequency, wherein the maximum value in the temperature dead zone is the operating temperature threshold；
Otherwise, the control module keeps the running frequency of the compressor constant.
8. such as the control device of compressor described in claim 5 or 6, which is characterized in that the control module is according to the hair
The temperature of thermal device and operating temperature threshold corresponding with the heating device, using proportional plus integral control mode to the pressure
When the running frequency of contracting machine is adjusted, the control module includes：
Subtracter, for calculating the difference between the operating temperature threshold of the heating device and the temperature of the heating device；
Proportional and integral controller, between the temperature for operating temperature threshold and the heating device to the heating device
Difference carries out proportional integration and adjusts to obtain the first value；
Clip processor carries out amplitude limiting processing to first value to obtain the target operating frequency correction value of the compressor；
Adder, for the target operating frequency correction value to be added to the target operating frequency of the compressor, to obtain
The realistic objective running frequency of the compressor.
9. a kind of household electrical appliance, which is characterized in that the control dress including the compressor as described in any one of claim 5-8
It sets.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062769.1A CN106481537B (en) | 2016-11-25 | 2016-11-25 | Control method, device and the household electrical appliance of compressor |
| PCT/CN2017/076206 WO2018094912A1 (en) | 2016-11-25 | 2017-03-09 | Control method for compressor, apparatus and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062769.1A CN106481537B (en) | 2016-11-25 | 2016-11-25 | Control method, device and the household electrical appliance of compressor |
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| Publication Number | Publication Date |
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| CN106481537A CN106481537A (en) | 2017-03-08 |
| CN106481537B true CN106481537B (en) | 2018-11-27 |
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| CN (1) | CN106481537B (en) |
| WO (1) | WO2018094912A1 (en) |
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| KR102165500B1 (en) * | 2018-12-11 | 2020-10-14 | 엘지전자 주식회사 | Outdoor unit for air conditioner for driving conpressor |
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| CN106481537B (en) * | 2016-11-25 | 2018-11-27 | 广东美的制冷设备有限公司 | Control method, device and the household electrical appliance of compressor |
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| CN114608160B (en) * | 2022-02-18 | 2023-12-15 | 青岛海尔空调器有限总公司 | Method and device for controlling direct-current air conditioner and air conditioner |
| CN116025554B (en) * | 2023-03-30 | 2023-07-21 | 深圳艾为电气技术有限公司 | Method and device for controlling electric compressor based on common-mode inductance |
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| CN106481537A (en) | 2017-03-08 |
| WO2018094912A1 (en) | 2018-05-31 |
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