CN109751710A - Compressor control device, system, outdoor unit, air-conditioning and compressor control method - Google Patents
Compressor control device, system, outdoor unit, air-conditioning and compressor control method Download PDFInfo
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Abstract
The invention belongs to compressor control technical fields, disclose a kind of compressor control device, including first switch device, are arranged in the communication line of compressor and three phase mains；Compressor reverse rotation control device is connected in parallel, three-phase source detecting device with first switch device, for detecting the output current signal of three phase mains；With, controller, for controlling being opened or closed for first switch device and the compressor reverse rotation control device.When three-phase source detecting device detects the output current signal of three phase mains to be reversely connected, controller disconnects first switch device, it is also turned on compressor reverse rotation control device, so that compressor is inverted again on the basis of reversion, final realize rotates forward, and inverted status is reversed, so that compressor is able to continue to operate normally, air conditioner is improved in the adaptability of different situations, increases user experience.The invention also discloses a kind of compressor assembly, outdoor unit, air-conditioning and compressor control methods.
Description
Technical field
The present invention relates to compressor control technical field, in particular to a kind of compressor control device, system, outdoor unit,
Air-conditioning and compressor control method.
Background technique
The compressor of air conditioner generally uses three phase mains to power, if three-phase power supply phase sequence is reversed, can make compressor
Electric current increased dramatically, and noise becomes larger, and long-play influences compression efficiency, or even does not compress, and lead to compressor damage.It is existing
Air conditioner can be in disorderly closedown state, be not normally functioning, control mode compares in the case where three-phase power supply phase sequence is reversed
Single, air conditioner adaptability is poor, affects user experience.
Summary of the invention
The embodiment of the invention provides a kind of compressor control device, system, outdoor unit, air-conditioning and compressor control sides
Method can be in disorderly closedown state, be not normally functioning to solve existing air conditioner in the case where three phase mains is reversed
Technical problem.In order to which some aspects of the embodiment to disclosure have a basic understanding, simple summary is shown below.It should
Summarized section is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments.
Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
According to a first aspect of the embodiments of the present invention, a kind of compressor control device is provided.
In some optional embodiments, compressor control device includes: first switch device, and the first switch device is set
It sets in the communication line of the compressor and three phase mains；Further include: compressor reverse rotation control device, with the first switch
Device is connected in parallel, and is inverted on the basis of current operation direction for controlling the compressor；Three phase mains detection dress
It sets, for detecting the output current signal of the three phase mains；With controller, for according to the three-phase source detecting device
Testing result control being opened or closed for the first switch device and the compressor reverse rotation control device.
Using the technical program, when three-phase source detecting device detects the output current signal of three phase mains for reversal connection
When, controller disconnects first switch device, compressor reverse rotation control device is also turned on, so that compressor is on the basis of reversion
It is inverted again, final realize rotates forward, and reverses inverted status so that compressor is able to continue to operate normally and improves air conditioner
In the adaptability of different situations, increase user experience.
In some optional embodiments, the first switch device is first contactor, the compressor reverse rotation control dress
It is set to second contactor, three output lines of the first contactor are connect according to the first sequence with the compressor, and described
In three output lines of two contactors, the order of connection and the first sequence phase of any two output lines and the compressor
Instead.
In some optional embodiments, the three-phase source detecting device includes zero passage signal detection circuit, for detecting
The zero cross signal of the output current signal of the three phase mains.
According to a second aspect of the embodiments of the present invention, a kind of compressor assembly, including compressor and aforementioned compression are provided
Machine control device.
According to a third aspect of the embodiments of the present invention, a kind of air-conditioner outdoor unit, including aforementioned compressor system are provided.
According to a fourth aspect of the embodiments of the present invention, a kind of air-conditioning, including aforementioned air-conditioner outdoor unit are provided.
Five aspect according to an embodiment of the present invention, provides a kind of compressor control method, comprising:
Detect the output current signal of three phase mains；When the output current signal for detecting the three phase mains is reversal connection
When, first switch device is disconnected, compressor reverse rotation control device is also turned on, so that basis of the compressor in current operation direction
On inverted.
In some optional embodiments, the output current signal of the three phase mains is the Rule of judgment of reversal connection are as follows:
|T-t1×3|≥X1, and the duration is X2；
Wherein, T is the period (i.e. the period of three phase mains) of one of them electric current, unit are as follows: ms；t1It is described wherein one
Rising edge/failing edge of electric current in normal phase sequence between the rising edge/failing edge of (R phase, S phase, T-phase) adjacency electric current
Time interval, unit are as follows: ms；X1For the first duration, unit are as follows: ms；X2For the second duration, unit are as follows: s.
Optionally, the value range of first duration be (0, T].
Further, the compressor control method further include: when detecting three phase mains fault-signal, control compression
Machine is out of service.
Using the technical program, further, before whether detection three phase mains is reversely connected, detection three phase mains first is
It is no normal.
In some optional embodiments, the three phase mains fault-signal are as follows: in normal phase sequence adjacent two electric currents be 0 and
Continue third duration.
In some optional embodiments, the three phase mains fault-signal are as follows: the period of one of them electric current is greater than the 4th
Duration, and continue the 5th duration.
In some optional embodiments, the three phase mains fault-signal are as follows: adjacent two electric currents is upper in normal phase sequence
The time interval risen between edge/failing edge is greater than the 6th duration, and continues the 7th duration.
Technical solution provided in an embodiment of the present invention can include the following benefits:
When three-phase source detecting device detects the output current signal of three phase mains to be reversely connected, controller disconnects first
Switching device is also turned on compressor reverse rotation control device, so that compressor is inverted again on the basis of reversion, it is final real
It now rotates forward, reverses inverted status so that compressor is able to continue to operate normally and improve air conditioner in the adaptation energy of different situations
Power increases user experience.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the electrical block diagram of compressor control device shown according to an exemplary embodiment.
Fig. 2 is the electrical block diagram of compressor assembly shown according to an exemplary embodiment.
Fig. 3 is three-phase current signal waveform and the corresponding mistake of three phase mains shown according to an exemplary embodiment output
Zero-signal schematic diagram.
Fig. 4 be three phase mains shown according to an exemplary embodiment output electric current reversal connection when, signal waveform with it is corresponding
Zero cross signal schematic diagram.
Fig. 5 is the implementation process schematic diagram of compressor control method shown according to an exemplary embodiment.
Fig. 6 is the electrical block diagram of the compressor control device shown according to another exemplary embodiment.
Fig. 7 is the electrical block diagram of the compressor control device shown according to another exemplary embodiment.
Fig. 8 is the electrical block diagram of the compressor control device shown according to another exemplary embodiment.
In figure:
1- compressor；2- three phase mains；3- first switch device；4- compressor reverse rotation control device；The inspection of 5- three phase mains
Survey device；6- controller.
Specific embodiment
The following description and drawings fully show the specific embodiment of this paper, to enable those skilled in the art to reality
Trample them.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This
The range of the embodiment of text includes equivalent obtained by the entire scope of claims and all of claims
Object.
As shown in Figure 1, compressor control device of the present invention includes the communication line that compressor 1 and three phase mains 2 is arranged in
Upper first switch device 3 defaults first switch device in an ON state, compressor 1 and three phase mains when starting up the compressor
In an ON state, compressor is in operating status for 2 connection line.
The normal phase sequence of three phase mains is R phase, S phase, T-phase, and when wherein any two sequences are opposite, as phase sequence is reversely connected
Situation.For example, when R phase, S phase are reversely connected, phase sequence are as follows: S phase, R phase, T-phase, as shown in Figure 2；When S phase, T-phase reversal connection, phase sequence are as follows: R
Phase, T-phase, S phase, as shown in Figure 6；When R phase, T-phase reversal connection, phase sequence are as follows: T-phase, S phase, R phase.In the case where phase sequence reversal connection, pressure
Contracting machine 1 can invert operation.
For the operating condition, as shown in Figure 1, compressor control device of the present invention further includes connects in parallel with first switch device 3
The compressor reverse rotation control device 4 connect is inverted on the basis of current operation direction for controlling the compressor；Also wrap
Three-phase source detecting device 5 is included, for detecting the output current signal of three phase mains 1；Further include controller 6, works as three phase mains
When detection device 5 detects the phase sequence of the output current signal of three phase mains 1 to be reversely connected, controller 6 disconnects first switch device
3, it is also turned on compressor reverse rotation control device 4, so that compressor 1 is inverted again on the basis of reversion, torsion reversion shape
State, final realize rotates forward, so that compressor is able to continue to operate normally.
Using the technical program, when three-phase source detecting device detects the output current signal of three phase mains for reversal connection
When, controller disconnects first switch device, compressor reverse rotation control device is also turned on, so that compressor is on the basis of reversion
It is inverted again, final realize rotates forward, and reverses inverted status so that compressor is able to continue to operate normally and improves air conditioner
In the adaptability of different situations, increase user experience.
Specifically, the implementation of first switch device can be first contactor；The reality of compressor reverse rotation control device
Existing mode can be second contactor.Three output lines of first contactor are connect according to the first sequence with compressor, and second connects
In three output lines of tentaculum, any two output lines are opposite with the first sequence with the order of connection of compressor.Such as Fig. 1
In, the phase sequence of the output electric current of three phase mains are as follows: S phase, R phase, T-phase, the U of three output lines and compressor of first contactor
Phase, V phase, the connection of W phase sequence, three output lines of second contactor are connected with the V phase, U phase, W phase sequence of compressor；It can also be with
As shown in fig. 6, three output lines of first contactor and the U phase, V phase, W phase sequence of compressor connect, the three of second contactor
Root output line and the U phase, W phase, V phase sequence of compressor connect；In another example in Fig. 5, the phase sequence of the output electric current of three phase mains are as follows:
R phase, T-phase, S phase, three output lines of first contactor are connected with the U phase, V phase, W phase sequence of compressor, second contactor
The U phase, W phase, V phase sequence of three output lines and compressor connect；It can also be as shown in fig. 7, three of first contactor export
The U phase, V phase, W phase sequence of line and compressor connect, and three output lines of second contactor and the W phase, V phase, U phase of compressor are suitable
Sequence connection.When the phase sequence of the output current signal of three phase mains 1 is reversal connection, compressor is made by the second contactor of reversal connection
It is inverted again on the basis of reversion, to realize that compressor rotates forward, so that compressor is in the case where three phase mains is reversely connected
It still is able to operate normally.
Specifically, the implementation of three-phase source detecting device 5 can be zero passage signal detection circuit, for detecting three-phase
The zero cross signal of the three-phase current signal of power supply output, and then judge on the basis of the zero cross signal output of three phase mains 1
Whether the phase sequence of electric current is correct, and judges whether three phase mains breaks down.
It is illustrated in figure 2 three-phase current signal waveform and corresponding zero cross signal schematic diagram.In fixed frequency air conditioner, compressor
Three phase mains is to determine frequency, corresponding three-phase current signal waveform be frequency is identical and constant, amplitude is identical and constant, phase according to
The sine wave of 120 ° of secondary mutual deviation.When current signal waveform is from negative half period to when positive half cycle transition, zero passage signal detection circuit is exported
Failing edge, when current signal waveform is positive half cycle, zero passage signal detection circuit output -1；When current signal waveform is from positive half cycle
To when negative half period transition, zero passage signal detection circuit exports rising edge, when current signal waveform is negative half period, zero cross signal inspection
Slowdown monitoring circuit output 1.
When the three-phase of three phase mains 1 output electric current meets the following conditions 1, it is believed that the output current signal of three phase mains 1
Phase sequence be reversal connection.
Condition 1:| T-t1×3|≥X1, and the duration is X2；
Wherein, T is the period (i.e. the period of three phase mains) of one of them electric current, unit are as follows: ms；t1It is described wherein one
Rising edge/failing edge of electric current in normal phase sequence between the rising edge/failing edge of (R phase, S phase, T-phase) adjacency electric current
Time interval, unit are as follows: ms；X1For the first duration, unit are as follows: ms；X2For the second duration, unit are as follows: s.
As shown in Fig. 2, when the phase sequence of the output electric current of three phase mains is correct (phase sequence is R phase, S phase, T-phase), T-t1×3
=0；As shown in figure 3, when the phase sequence of the output electric current of three phase mains is S phase, R phase, T-phase, T-t1× 3=-T, other are several
Reversal connection situation also complies with the expression formula.Therefore, as | T-t1×3|≥X1, wherein the first duration value range be (0, T] when, say
There is reversal connection in the phase sequence of the output electric current of bright three phase mains.
Wherein, the second duration X2It is determined according to the average quality of current domestic user's power supply, general 5s or so is
Properly, some regional power supplies are of poor quality, can appropriate rise time.
Further, before whether detection three phase mains is reversely connected, whether detection three phase mains first is normal.
Specifically, when the three-phase of three phase mains 1 output electric current meets any one of the following conditions 2 to condition 4, it is believed that
The current signal is three phase mains fault-signal, and characterization three phase mains breaks down.
Condition 2: adjacent two electric currents are 0 and continue third duration in normal phase sequence；Such as: S phase, T-phase waveform be 0 and
Continue third duration, illustrates no S phase, T-phase output, it is believed that three phase mains breaks down.
Condition 3: it is greater than the 4th duration when the period of one of them electric current, and continues the 5th duration；Such as in Fig. 2, when three
When phase supply frequency is 50HZ, the period of each phase is 20ms；If wherein the period of a phase such as S phase is greater than the 4th duration, and
When continuing five durations, then it is assumed that the waveform that three phase mains provides is unstable or abnormal, three phase mains failure occurs.
Wherein, third duration, the 4th duration, the 5th duration are determined according to practical power annoyance level and circuit, second grade, can
It is obtained by experiment.
Condition 4: when the time interval between rising edge/failing edge of two electric currents adjacent in normal phase sequence is greater than the 6th
It is long, and continue the 7th duration.Under normal circumstances, the time in normal phase sequence between rising edge/failing edge of adjacent two electric currents
Interval should be the one third in period, the time interval between rising edge/failing edge of two electric currents adjacent in normal phase sequence
Greater than the 6th duration, and when continuing seven durations, illustrate that the sequencing lead time of three-phase current is too big, then it is assumed that three-phase electricity
The waveform that source provides is unstable or abnormal, three phase mains failure occurs.
Wherein, the 6th duration, the 7th duration can be obtained by experiment.
According to a second aspect of the embodiments of the present invention, a kind of compressor assembly, including compressor and aforementioned compression are provided
Machine control device.
According to a third aspect of the embodiments of the present invention, a kind of air-conditioner outdoor unit, including aforementioned compressor system are provided.
According to a fourth aspect of the embodiments of the present invention, a kind of air-conditioning, including aforementioned air-conditioner outdoor unit are provided.
According to a fifth aspect of the embodiments of the present invention, a kind of compressor control method is provided.It is illustrated in figure 4 the present invention
The implementation process schematic diagram of compressor control method.
Step S1: power-on of air conditioner operation；
Step S2: the 8th duration of operation after power supply reaches stable state, detects the output current signal of three phase mains；
Step S3: whether the output current signal for judging three phase mains is three phase mains fault-signal, if so, executing step
Rapid S4；If it is not, thening follow the steps S5；
Step S4: stopping compressor, carries out the maintenance of compressor three phase mains；
Step S5: the phase sequence of the output current signal of three phase mains is detected；
Step S6: whether the phase sequence for judging the output current signal of three phase mains is reversal connection, if so, thening follow the steps S7；
If it is not, then compressor operates normally；
Step S7: first switch device is disconnected, compressor reverse rotation control device is also turned on, so that compressor continues to rotate forward
Operation.
Specifically, the 8th when a length of power supply electrifying after the stabilization time, generally 2s-10s determines depending on power quality.
Herein, term " first ", " second " etc. are used only for distinguishing an element and another element, without
It is required that implying that there are any actual relationship or sequences between these elements.Actually the first element can also be referred to as
Second element, vice versa.Moreover, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include, so that the structure, device or the equipment that include a series of elements not only include those elements, but also including not having
The other element being expressly recited, or further include for this structure, device or the intrinsic element of equipment.It is each herein
Embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, each
Same and similar part may refer to each other between embodiment.
For those skilled in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The invention is not limited to the structures for being described above and being shown in the accompanying drawings, and can not depart from its model
It encloses and carry out various modifications and change.The scope of the present invention is limited only by the attached claims.
Claims (12)
1. a kind of compressor control device, including first switch device, the first switch device setting the compressor with
In the communication line of three phase mains；It is characterized by also including:
Compressor reverse rotation control device is connected in parallel with the first switch device, is working as forward for controlling the compressor
It is inverted on the basis of dynamic direction；
Three-phase source detecting device, for detecting the output current signal of the three phase mains；With,
Controller controls the first switch device and described for the testing result according to the three-phase source detecting device
Compressor reverse rotation control device is opened or closed.
2. compressor control device as described in claim 1, which is characterized in that the first switch device is the first contact
Device, the compressor reverse rotation control device are second contactor, and three output lines of the first contactor are according to the first sequence
It is connect with the compressor, in three output lines of the second contactor, any two output lines and the compressor
The order of connection with first sequence it is opposite.
3. compressor control device as claimed in claim 1 or 2, which is characterized in that the three-phase source detecting device includes
Zero passage signal detection circuit, the zero cross signal of the output current signal for detecting the three phase mains.
4. a kind of compressor assembly, including compressor, which is characterized in that further include pressure as described in any one of claims 1 to 3
Contracting machine control device.
5. a kind of air-conditioner outdoor unit, which is characterized in that including compressor assembly as claimed in claim 4.
6. a kind of air-conditioning, which is characterized in that including air-conditioner outdoor unit as claimed in claim 5.
7. a kind of compressor control method characterized by comprising
Detect the output current signal of three phase mains；
When detecting the output current signal of the three phase mains to be reversely connected, first switch device is disconnected, compression is also turned on
Machine reversal control device, so that compressor is inverted on the basis of current operation direction.
8. compressor control method according to claim 7, which is characterized in that the output current signal of the three phase mains
For the Rule of judgment of reversal connection are as follows:
|T-t1×3|≥X1, and the duration is X2；
Wherein, T is the period of one of them electric current, unit are as follows: ms；t1For the one of them electric current rising edge/failing edge with
Time interval in normal phase sequence between rising edge/failing edge of adjacency electric current, unit are as follows: ms；X1For the first duration, unit
Are as follows: ms；X2For the second duration, unit are as follows: s.
9. compressor control method as claimed in claim 7 or 8, which is characterized in that further include: when detecting three phase mains therefore
When hindering signal, control compressor is out of service.
10. compressor control method as claimed in claim 9, which is characterized in that the three phase mains fault-signal are as follows: normal
Adjacent two electric currents are 0 in phase sequence, and continue third duration.
11. compressor control method as claimed in claim 9, which is characterized in that the three phase mains fault-signal are as follows: wherein
The period of one electric current is greater than the 4th duration, and continues the 5th duration.
12. compressor control method as claimed in claim 9, which is characterized in that the three phase mains fault-signal are as follows: normal
Time interval in phase sequence between rising edge/failing edge of adjacent two electric currents is greater than the 6th duration, and continues the 7th duration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910027878.7A CN109751710A (en) | 2019-01-11 | 2019-01-11 | Compressor control device, system, outdoor unit, air-conditioning and compressor control method |
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| CN201910027878.7A CN109751710A (en) | 2019-01-11 | 2019-01-11 | Compressor control device, system, outdoor unit, air-conditioning and compressor control method |
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Cited By (1)
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| CN111426890A (en) * | 2020-04-22 | 2020-07-17 | 海信（山东）空调有限公司 | Phase sequence detection circuit, outdoor unit, air conditioner and control method |
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Application publication date: 20190514 |