CN108196136A - A kind of three-phase electricity detection method and device and air-conditioner outdoor unit - Google Patents
A kind of three-phase electricity detection method and device and air-conditioner outdoor unit Download PDFInfo
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- CN108196136A CN108196136A CN201711337758.4A CN201711337758A CN108196136A CN 108196136 A CN108196136 A CN 108196136A CN 201711337758 A CN201711337758 A CN 201711337758A CN 108196136 A CN108196136 A CN 108196136A
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R29/16—Measuring asymmetry of polyphase networks
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Abstract
The embodiment of the present invention discloses a kind of three-phase electricity detection method and device and air-conditioner outdoor unit, is related to household electrical appliance manufacturing field, can improve the function of pile defection technology, improves the stability of system.Three-phase electricity detection method, applied in ac-dc converter circuit, wherein described ac-dc converter circuit includes wave filter, rectifier, and the input terminal connection ac bus of the wave filter, the output terminal of the wave filter connect the input terminal of rectifier, the output terminal connection dc bus of the rectifier；Three-phase alternating current inputs the wave filter by ac bus；Voltage on the filtered ac bus voltage and the dc bus of three-phase electric detection means Fault detection filter output terminal；When determining that the filtered ac bus voltage meets predetermined condition with the voltage on the dc bus, determine that phase shortage does not occur for the three-phase alternating current.
Description
Technical field
The embodiment of the present invention be related to household electrical appliance manufacturing field more particularly to a kind of three-phase electricity detection method and device and
Air-conditioner outdoor unit.
Background technology
Many outdoor unit air-conditioning products are powered using three phase mains, in case of scarce during product powers on use
The situation of phase has machine product very big danger.Such as after the L1 phases of three-phase alternating-current supply, L2 phases, L3 phase phase shortage L1 phases its
His two-phase L2 phases, L3, which meet, generates high current, be easy to cause the danger that wiring is burnt or even complete machine is burnt；If wiring line footpath is selected
The frequency-variable module for selecting relatively thick so subsequent rectification silicon bridge, compressor and fan electromotor is easily burnt, right even if not being burned out
The service life that these devices include electrolytic capacitor also has extreme influence.Three can be equipped in order to prevent air conditioner outside such phenomenon room
Phase measure loop carries out the inspection of phase shortage.The three-phase detection circuit of general air-conditioning can select to carry out taking electricity in filter output,
This way can not detect if phase shortage has occurred so in wave filter rear end, above-mentioned danger can equally occur, therefore existing
The pile defection technology that technology provides is incomplete.
Invention content
The embodiment of the present invention provides a kind of three-phase electricity detection method and device and air-conditioner outdoor unit, can improve phase shortage inspection
The function of survey technology improves the stability of system.
In a first aspect, provide a kind of three-phase electricity detection method, applied in ac-dc converter circuit, wherein the alternating current-direct current
Conversion circuit includes wave filter, rectifier, and the input terminal connection ac bus of the wave filter, the output terminal of the wave filter connect
Connect the input terminal of rectifier, the output terminal connection dc bus of the rectifier；Three-phase alternating current inputs institute by ac bus
State wave filter；The filtered ac bus voltage of three-phase electric detection means Fault detection filter output terminal and the direct current are female
Voltage on line；When determining that the voltage on the filtered ac bus voltage and the dc bus meets predetermined condition
When, determine that phase shortage does not occur for the three-phase alternating current.
Second aspect provides a kind of three-phase electric detection means, applied in ac-dc converter circuit, wherein the alternating current-direct current
Conversion circuit includes wave filter, rectifier, and the input terminal connection ac bus of the wave filter, the output terminal of the wave filter connect
Connect the input terminal of rectifier, the output terminal connection dc bus of the rectifier；Three-phase alternating-current supply is inputted by ac bus
The wave filter；Detection unit, it is female for the filtered ac bus voltage of Fault detection filter output terminal and the direct current
Voltage on line；Processing unit, for when determine the filtered ac bus voltage of detection unit detection with it is described straight
When voltage on stream busbar meets predetermined condition, determine that phase shortage does not occur for the three-phase alternating-current supply.
The third aspect provides a kind of three-phase electric detection means, including：Interface, processor, memory, bus；The storage
Device is for storing computer executed instructions, and the processor is connect with the memory by the bus, when the three-phase electricity
When detection device is run, the processor performs the computer executed instructions of the memory storage, so that the three-phase electric-examination
It surveys device and performs above-mentioned method.
Fourth aspect provides a kind of computer storage media, including instructing, when run on a computer so that institute
It states computer and performs above-mentioned method.
5th aspect, provides a kind of air-conditioner outdoor unit, including ac-dc converter circuit, compressor variable frequency device and fan electricity
Machine frequency converter, the ac-dc converter circuit are used for compressor variable frequency device and fan electromotor inverter supply, further include
The three-phase electric detection means stated, the three-phase electric detection means connect the driving circuit of the compressor variable frequency device and the wind
Fan the driving circuit of motor inverter；
When three-phase electric detection means determines that phase shortage does not occur for the three-phase alternating-current supply, to the compressor variable frequency device
Driving circuit exports first control signal, so that the driving circuit of the compressor variable frequency device is according to the first control signal
The compressor variable frequency device is driven to the compressor outputting drive voltage；It is defeated to the driving circuit of the fan electromotor frequency converter
Go out second control signal, so that the driving circuit of the fan electromotor frequency converter is according to driving the second control signal
Fan electromotor frequency converter is to the fan electromotor outputting drive voltage.
In said program, the three-phase electricity detection method provided is applied in ac-dc converter circuit, ac-dc converter circuit
Including wave filter, rectifier, the input of the input terminal connection ac bus of wave filter, the output terminal connection rectifier of wave filter
End, the output terminal connection dc bus of rectifier；Three-phase alternating-current supply passes through ac bus input filter；Three-phase electro-detection fills
Put the voltage on the filtered ac bus voltage and dc bus of Fault detection filter output terminal；It is filtered when determining
When ac bus voltage meets predetermined condition with the voltage on dc bus, determine that phase shortage does not occur in a steady stream for three-phase alternating current；This
The dc bus that sample is connected in combination with the filtered ac bus voltage of filter output and the output terminal of rectifier
On voltage carry out the pile defection of three-phase alternating-current supply, compared with the prior art in only with reference to filter output take electric progress
Pile defection can improve the function of pile defection technology, improve the stability of system.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the present invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the connection relationship diagram of a kind of three-phase electric detection means that the embodiment of the present invention provides；
Fig. 2 is the structure diagram of a kind of three-phase electric detection means that the embodiment of the present invention provides；
Fig. 3 is the structure diagram of a kind of air-conditioner outdoor unit that the embodiment of the present invention provides；
Fig. 4 is the structure diagram of a kind of three-phase electric detection means that another embodiment of the present invention provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
With reference to shown in Fig. 1, embodiments herein is applied in ac-dc converter circuit, wherein ac-dc converter circuit packet
Include wave filter 11, rectifier 12, the output terminal connection of the input terminal connection ac bus L1, L2, L3, wave filter 12 of wave filter 11
The input terminal of rectifier 12, output terminal connection dc bus P, N of rectifier 12；Three-phase alternating-current supply is inputted by ac bus
Wave filter；Wherein, the ac bus of usual three-phase alternating-current supply includes：L1 phases ac bus, L2 phases ac bus, L3 phases exchange
Busbar and zero curve.
The filtered ac bus voltage and direct current of S101,13 Fault detection filter output terminal of three-phase electric detection means
Voltage on busbar.
The voltage that its median filter 11 provides above-mentioned each ac bus is filtered, and by filtered control source
To rectifier 12, illustratively, the connection of the output terminal of wave filter 12 and the input terminal of rectifier 12 by transmission line L1 ',
L2 ', L3 ' and zero curve ' it realizes, wave filter 11 is to output after the voltage filter on L1 phase ac bus to transmission line L1 ', filter
Wave device 11 is to output after the voltage filter on L2 phase ac bus to transmission line L2 ', wave filter 11 on L3 phase ac bus
Voltage filter after output to transmission line L3 '.The filtered exchange of three-phase electric detection means Fault detection filter output terminal is female
Line voltage be detect transmission line L1 ', L2 ', L3 ' respectively with zero curve ' between voltage, three-phase electric detection means detection direct current
Voltage on busbar, voltage of the detection i.e. between dc bus P and N.
S102, when determining that the voltage on filtered ac bus voltage and dc bus meets predetermined condition, determine
Phase shortage does not occur for three-phase alternating-current supply.
Specifically, when determining VPN∈[(1-α)Vj*31/2*21/2, (1+ α) Vj*31/2*21/2] when, determine the three-phase alternating current
Phase shortage does not occur for power supply；Wherein, 0≤α ＜ 1, the VPNFor the voltage on the dc bus, Vj=VL1=VL2=VL3, VL1For
Filtered L1 phases exchange busbar voltage, VL2Busbar voltage, V are exchanged for filtered L2 phasesL3Mother is exchanged for filtered L3 phases
Line voltage.When three-phase alternating-current supply not phase shortage and dc bus PN terminal voltages should be V during three-phase electric equilibriumj*31/2*21/2.It lifts
Example explanation：Assuming that three-phase alternating-current supply is 380V power supplys, then each phase voltage is 220V after filtering.Not dc bus during phase shortage
PN terminal voltages be 537V, it is contemplated that voltage fluctuation after so filtering each phase voltage be 220 ± 10%, then dc bus PN ends
Voltage is 483V-590V.Illustrate that three-phase alternating-current supply has when dc bus PN terminal voltages are less than the minimum value of this numberical range
Possible phase shortage.
In said program, the three-phase electricity detection method provided is applied in ac-dc converter circuit, ac-dc converter circuit
Including wave filter, rectifier, the input of the input terminal connection ac bus of wave filter, the output terminal connection rectifier of wave filter
End, the output terminal connection dc bus of rectifier；Three-phase alternating-current supply passes through ac bus input filter；Three-phase electro-detection fills
Put the voltage on the filtered ac bus voltage and dc bus of Fault detection filter output terminal；It is filtered when determining
When ac bus voltage meets predetermined condition with the voltage on dc bus, determine that phase shortage does not occur in a steady stream for three-phase alternating current；This
The dc bus that sample is connected in combination with the filtered ac bus voltage of filter output and the output terminal of rectifier
On voltage carry out the pile defection of three-phase alternating-current supply, compared with the prior art in only with reference to filter output take electric progress
Pile defection can improve the function of pile defection technology, improve the stability of system.
In addition, however, it is determined that phase shortage occurs for three-phase alternating-current supply, then obtains filtered ac bus electric current, and according to filtering
Ac bus electric current afterwards determines that the ac bus of phase shortage occurs.Specifically, to transmission line L1 ', L2 ', L3 ' phase current into
Row detection.When three-phase alternating-current supply not phase shortage and transmission line L1 ' during three-phase electric equilibrium, L2 ', the phase current on L3 ' according to rear
The load distribution at end, for example, as shown in figure 3, the electric current that flows through of transmission line L1 ', L2 ', L3 ' takes electricity for compressor variable frequency device,
It transmission line L3 ' while takes and supplies electricity to fan electromotor frequency converter, therefore the phase current on transmission line L1 ', L2 ' is equal, transmission line
Phase current on the L3 ' of road is slightly larger than the phase current on transmission line L1 ', L2 '.When the L1 phase phase shortages of ac bus, then pass
Phase current on defeated circuit L2 ', L3 ' can increased dramatically the design value much larger than complete machine phase current, then three-phase alternating-current supply phase shortage,
Wherein that minimum phase of electric current can determine whether as phase shortage.In addition when three-phase imbalance occurs, according to transmission line L1 ', L2 ',
Phase current values on L3 ' can calculate and judge three-phase imbalance rate, be protected according to the design needs.
With reference to shown in Fig. 2, a kind of three-phase electric detection means is provided, the method for implementing above-mentioned includes：
Detection unit 21, it is female for the filtered ac bus voltage of Fault detection filter output terminal and the direct current
Voltage on line；
Processing unit 22, for when determine filtered ac bus voltage that the detection unit 21 detects with it is described straight
When voltage on stream busbar meets predetermined condition, determine that phase shortage does not occur for the three-phase alternating-current supply.
Optionally, ac bus includes：L1 phases ac bus, L2 phases ac bus, L3 phase ac bus；Processing unit
22, specifically for as determining VPN∈[(1-α)Vj*31/2*21/2, (1+ α) Vj*31/2*21/2] when, determine the three-phase alternating-current supply
Phase shortage does not occur；Wherein, 0≤α ＜ 1, the VPNFor the voltage on the dc bus, Vj=VL1=VL2=VL3, VL1For filtering
L1 phases afterwards exchange busbar voltage, VL2Busbar voltage, V are exchanged for filtered L2 phasesL3For filtered L3 phases ac bus electricity
Pressure.
Processing unit 22 is additionally operable to if it is determined that three-phase alternating-current supply generation phase shortage, then obtained by the detection unit
Filtered ac bus electric current is taken, and the ac bus of generation phase shortage is determined according to filtered ac bus electric current.
Wherein, all related contents for each step that above method embodiment is related to can quote corresponding function module
Function description, effect details are not described herein.
With reference to shown in Fig. 3, embodiments herein provides a kind of air-conditioner outdoor unit, including ac-dc converter circuit 31, pressure
Contracting machine frequency converter 32 and fan electromotor frequency converter 33, ac-dc converter circuit 31 are used for compressor variable frequency device 32 and fan
Motor inverter 33 is powered, and is further included：Three-phase electric detection means 34, the drive of 34 connect compressor frequency converter of three-phase electric detection means
The driving circuit 36 of dynamic circuit 35 and fan electromotor frequency converter；
When three-phase electric detection means 34 determines that phase shortage does not occur for three-phase alternating-current supply (L1, L2, L3), to compressor variable frequency
The driving circuit 35 of device exports first control signal, so that the driving circuit 35 of compressor variable frequency device is according to first control signal
Compressor variable frequency device 32 is driven to 37 outputting drive voltage of compressor；Second is exported to the driving circuit 36 of fan motor inverter
Signal is controlled, so that the driving circuit 36 of fan electromotor frequency converter is according to second control signal driving fan motor inverter 33
To 38 outputting drive voltage of fan electromotor.
When three-phase electric detection means 34 determines that phase shortage occurs for three-phase alternating-current supply (L1, L2, L3), it is additionally operable to compressor
The driving circuit 35 of frequency converter exports third control signal, so that the driving circuit 35 of compressor variable frequency device is controlled according to third
Signal stops compressor variable frequency device 32 to 37 outputting drive voltage of compressor；It is exported to the driving circuit 36 of fan motor inverter
4th control signal, so that the driving circuit 36 of fan electromotor frequency converter stops fan electromotor frequency conversion according to the 4th control signal
Device 33 is to 38 outputting drive voltage of fan electromotor.
Illustratively, three-phase electric detection means 34 can be air-conditioner outdoor unit main control module, can be CPU, MCU or
The logic controls integrated circuit such as person FPGA, is integrated in main control module by the function of three-phase electric detection means 34 in this way, can simplify
System structure.In addition air-conditioner outdoor unit also provides the low-voltage power supply of each control module, in addition, on dc bus P also
Electromagnetic switch K and current-limiting resistance R1 are in series with, smooth resistance C1 and C2, wherein C1 are also in series between dc bus P and N
It is parallel on balance resistance R2, C2 and is parallel with balance resistance R3.In transmission line L1 ', L2 ', L3 ' one or more on also set
It is equipped with safety device, such as fuse S.
In addition, in the case of using integrated unit, three-phase electric detection means includes：Storage unit, processing unit with
And interface unit.Processing unit to the action of three-phase electric detection means for carrying out control management, for example, processing unit is for branch
Hold three-phase electric detection means implementation procedure S102.Storage unit, for storing the program code of information transmitting apparatus and data.It connects
Mouthful unit for connect with other external equipments with other equipment progress information exchange to realize the function of detection unit, such as with
Filtered ac bus voltage to obtain the filter output that sensor detects and described straight is connect with sensor
Flow the voltage on busbar.
Wherein, using processing unit as processor, storage unit is memory, and interface unit is for interface.Wherein, three-phase
Electric detection means is with reference to shown in Fig. 4, including interface 401, processor 402, memory 403 and bus 404, interface 401, processing
Device 402 is connected by bus 404 with memory 403.
Processor 402 can be a general central processor (Central Processing Unit, CPU), microprocessor
Device, application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC) or one or more
A integrated circuit for application scheme program to be controlled to perform.
Memory 403 can be read-only memory (Read-Only Memory, ROM) or can store static information and instruction
Other kinds of static storage device, random access memory (Random Access Memory, RAM) or letter can be stored
Breath and the other kinds of dynamic memory or Electrically Erasable Programmable Read-Only Memory (Electrically of instruction
Erasable Programmable Read-only Memory, EEPROM), CD-ROM (Compact Disc Read-
Only Memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, optical disc, digital universal
Optical disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store with referring to
Enable or data structure form desired program code simultaneously can by any other medium of computer access, but not limited to this.
Memory can be individually present, and be connected by bus with processor.Memory can also be integrated with processor.
Wherein, memory 403 is for storing the application code of execution application scheme, and is controlled by processor 402
System performs.Interface 401 is used to receive the content of external equipment input, such as connect what is detected to obtain sensor with sensor
Voltage on the filtered ac bus voltage of filter output and the dc bus, processor 402 are used to perform
The application code stored in memory 403, so as to fulfill the method described in the embodiment of the present application.
In addition, also providing a kind of calculate stores media (or medium), including carrying out in above-described embodiment when executed
The instruction of the operation of method.
In addition, a kind of computer program product is also provided, including above-mentioned calculating storage media (or medium).
It should be understood that in various embodiments of the present invention, the size of the serial number of above-mentioned each process is not meant to perform suitable
The priority of sequence, the execution sequence of each process should be determined with its function and internal logic, without the implementation of the reply embodiment of the present invention
Process forms any restriction.
Those of ordinary skill in the art may realize that each exemplary lists described with reference to the embodiments described herein
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is performed with hardware or software mode, specific application and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit can refer to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, it can be with
It realizes by another way.For example, apparatus embodiments described above are only schematical, for example, the unit
It divides, only a kind of division of logic function can have other dividing mode, such as multiple units or component in actual implementation
It may be combined or can be integrated into another system or some features can be ignored or does not perform.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, equipment or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is independent product sale or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is substantially in other words
The part contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be
People's computer, server or network equipment etc.) perform all or part of the steps of the method according to each embodiment of the present invention.
And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (English full name:Read-only memory, English letter
Claim：ROM), random access memory (English full name：Random access memory, English abbreviation：RAM), magnetic disc or light
The various media that can store program code such as disk.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of three-phase electricity detection method, applied in ac-dc converter circuit, wherein the ac-dc converter circuit includes filter
Wave device, rectifier, the input of the input terminal connection ac bus of the wave filter, the output terminal connection rectifier of the wave filter
End, the output terminal connection dc bus of the rectifier；Three-phase alternating-current supply inputs the wave filter by ac bus；It is special
Sign is,
On the filtered ac bus voltage and the dc bus of three-phase electric detection means Fault detection filter output terminal
Voltage；
When determining that the filtered ac bus voltage meets predetermined condition with the voltage on the dc bus, institute is determined
It states three-phase alternating-current supply and phase shortage does not occur.
2. according to the method described in claim 1, it is characterized in that, the ac bus includes：L1 phases ac bus, L2 intersect
Flow busbar, L3 phase ac bus；
It is described when determining that the voltage on the filtered ac bus voltage and the dc bus meets predetermined condition, really
Phase shortage does not occur for the fixed three-phase alternating-current supply, including：
When determining VPN∈[(1-α)Vj*31/2*21/2, (1+ α) Vj*31/2*21/2] when, determine that the three-phase alternating-current supply does not lack
Phase；Wherein, 0≤α ＜ 1, the VPNFor the voltage on the dc bus, Vj=VL1=VL2=VL3, VL1For filtered L1 phases
Ac bus voltage, VL2Busbar voltage, V are exchanged for filtered L2 phasesL3Busbar voltage is exchanged for filtered L3 phases.
3. method according to claim 1 or 2, which is characterized in that
If it is determined that phase shortage occurs for the three-phase alternating-current supply, then filtered ac bus electric current is obtained, and according to filtered
Ac bus electric current determines that the ac bus of phase shortage occurs.
4. a kind of three-phase electric detection means, applied in ac-dc converter circuit, wherein the ac-dc converter circuit includes filter
Wave device, rectifier, the input of the input terminal connection ac bus of the wave filter, the output terminal connection rectifier of the wave filter
End, the output terminal connection dc bus of the rectifier；Three-phase alternating-current supply inputs the wave filter by ac bus；It is special
Sign is, including：
Detection unit, on the filtered ac bus voltage of Fault detection filter output terminal and the dc bus
Voltage；
Processing unit, for when the filtered ac bus voltage and the dc bus that determine the detection unit detection
Voltage when meeting predetermined condition, determine that phase shortage does not occur for the three-phase alternating-current supply.
5. device according to claim 4, which is characterized in that the ac bus includes：L1 phases ac bus, L2 intersect
Flow busbar, L3 phase ac bus；
The processing unit, specifically for as determining VPN∈[(1-α)Vj*31/2*21/2, (1+ α) Vj*31/2*21/2] when, determine institute
It states three-phase alternating-current supply and phase shortage does not occur；Wherein, 0≤α ＜ 1, the VPNFor the voltage on the dc bus, Vj=VL1=
VL2=VL3, VL1Busbar voltage, V are exchanged for filtered L1 phasesL2Busbar voltage, V are exchanged for filtered L2 phasesL3After filtering
L3 phases exchange busbar voltage.
6. device according to claim 4 or 5, which is characterized in that
Processing unit is additionally operable to if it is determined that three-phase alternating-current supply generation phase shortage, then pass through the detection unit and obtain filtering
Ac bus electric current afterwards, and according to filtered ac bus electric current determine occur phase shortage ac bus.
7. a kind of three-phase electric detection means, which is characterized in that including：Interface, processor, memory, bus；The memory is used
In storage computer executed instructions, the processor is connect with the memory by the bus, when the three-phase electro-detection
When device is run, the processor performs the computer executed instructions of the memory storage, so that the three-phase electro-detection fills
It puts and performs method as described in any one of claims 1-3.
8. a kind of computer storage media, which is characterized in that including instructing, when run on a computer so that the meter
Calculation machine performs method as described in any one of claims 1-3.
9. a kind of air-conditioner outdoor unit, which is characterized in that become including ac-dc converter circuit, compressor variable frequency device and fan electromotor
Frequency device, the ac-dc converter circuit are used for compressor variable frequency device and fan electromotor inverter supply, further include：Such as right
It is required that 4-7 any one of them three-phase electric detection means, the three-phase electric detection means connects the drive of the compressor variable frequency device
The driving circuit of dynamic circuit and the fan electromotor frequency converter；
When three-phase electric detection means determines that phase shortage does not occur for the three-phase alternating-current supply, the driving to the compressor variable frequency device
Circuit output first control signal, so that the driving circuit of the compressor variable frequency device drives according to the first control signal
The compressor variable frequency device is to the compressor outputting drive voltage；
Second control signal is exported to the driving circuit of the fan electromotor frequency converter, so that the fan electromotor frequency converter
Driving circuit drives the fan electromotor frequency converter to the fan electromotor outputting drive voltage according to the second control signal.
10. air-conditioner outdoor unit according to claim 9, which is characterized in that
When three-phase electric detection means determines that phase shortage occurs for the three-phase alternating-current supply, it is additionally operable to the compressor variable frequency device
Driving circuit output third control signal, so that the driving circuit of the compressor variable frequency device controls signal according to the third
Stop the compressor variable frequency device to the compressor outputting drive voltage；
Driving circuit output the 4th to the fan electromotor frequency converter controls signal, so that the fan electromotor frequency converter
Driving circuit stops the fan electromotor frequency converter to the fan electromotor outputting drive voltage according to the described 4th control signal.
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| CN201711337758.4A CN108196136B (en) | 2017-12-14 | 2017-12-14 | Three-phase electricity detection method and device and air conditioner outdoor unit |
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|---|---|---|---|
| CN201711337758.4A CN108196136B (en) | 2017-12-14 | 2017-12-14 | Three-phase electricity detection method and device and air conditioner outdoor unit |
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| CN108196136B CN108196136B (en) | 2020-02-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194245A (en) * | 2018-11-16 | 2019-01-11 | 广州科伺智能科技有限公司 | A kind of servo-driver and its detection method with input phase failure detection function |
| CN112290510A (en) * | 2020-11-06 | 2021-01-29 | 广东电网有限责任公司佛山供电局 | Motor phase loss detection protection system |
| CN113391139A (en) * | 2021-07-30 | 2021-09-14 | 佛山市顺德区美的电子科技有限公司 | Open-phase detection method and device for three-phase power input line and air conditioner outdoor unit |
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