CN109378820A - A kind of control method that AC load power grid is adaptive and device - Google Patents
A kind of control method that AC load power grid is adaptive and device Download PDFInfo
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- 230000005611 electricity Effects 0.000 claims abstract description 37
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- 238000005259 measurement Methods 0.000 claims description 20
- 238000004378 air conditioning Methods 0.000 claims description 8
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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Abstract
The present invention designs a kind of control method that AC load power grid is adaptive and device, this method comprises: in the mains input side setting load power grid self-adaptive control module of load supplying route, the control module is after load powers on for the first time or powers off power on every time, automatic detection power grid phase voltage, and local power specification is identified according to the power grid phase voltage detected, and according to the result control switching circuit element selection after identification from taking electricity between fiery zero curve or take electricity between two firewires, keep constant AC load input voltage, with under different electrical power specification AC load it is general.Implement AC load power grid adaptive control method and device, it can be according to the power grid of country variant and area, supply voltage of the adjust automatically to load both ends, it solves because of sales region difference, on similar or even same design air conditioner, different loads is used, material is caused to be unable to common question, and structure is simple, has very high feasibility and economic benefit.
Description
Technical field
The invention belongs to AC load fields, specifically provide a kind of control method that AC load is adaptive and device and one
Kind has the air-conditioning of the AC load adaptive controller.
Background technique
At present in countries in the world electric network source specification, commonplace has 2 kinds: 3 phase 380V (containing 380-415V), 3 phases
220V (contains 208-230V), and fiery no-voltage specification there is 2 kinds of specifications of 220V or so and 120V or so, and thus AC load is defeated
Enter power specification and is also corresponding with different types, and electric elements (AC load) have an operating voltage range limitation, such one
Come, using the unit of 3 phase power supplys, the type for connecing the load of AC power source also can be different.Thus exist because of sales region not
Together, on similar or even same design AC load device, different loads is used, material is caused to be unable to common question.
In the prior art, have by keeping PFC (Power Factor Correction) circuit during the work time, defeated
Voltage dynamic regulation, realization can adapt to the function of wider input supply voltage with the variation of input voltage out, but should
Method needs to be arranged rectification module, flat wave module and inverter module, and circuit is more complicated, and the economic benefit is not high.
In the prior art, also by transformer is arranged in circuit, by automatically switch the different taps of transformer come
Realize different supply voltage output, but this method needs additional setting transformer, circuit is more complicated, economic benefit
It is not high.
Therefore, control method and device and one kind that this field needs a kind of AC load of new economical and efficient adaptive
Air-conditioning with the AC load adaptive controller solves the above problems.
Summary of the invention
In order to solve the above problem in the prior art, in order to solve circuit structure complexity, equipment in existing technology
The problem of higher cost, the present invention provides a kind of control methods that AC load power grid is adaptive, which is characterized in that is loading
The mains input side setting load power grid self-adaptive control module of power supply line, the control module power on or often for the first time in load
It is automatic to detect power grid phase voltage after secondary power-off powers on, and local power specification is known according to the power grid phase voltage detected
Not, and according to the result control switching circuit element selection after identification from taking electricity between fiery zero curve or take electricity between two firewires,
Keep constant AC load input voltage, under different electrical power specification AC load it is general.
In the optimal technical scheme of above-mentioned control method, it is characterised in that the input voltage kept constant is set as
220V。
In the optimal technical scheme of above-mentioned control method, wherein the switch line circuit component is to be provided with relay KMP1
With the plate relay of relay KMP2, control module by control panel relay select load power source input side be from fiery zero curve it
Between take electricity or take electricity between two firewires.
In the optimal technical scheme of above-mentioned control method, the result control route switching element choosing according to after identification
Select the method from electricity is taken between fiery zero curve or from electricity is taken between two firewires are as follows: as input power grid phase-voltage measurement≤220 × A%, A
When between 70-80, judgement input power specification is 3 phase 220V, then relay KMP1 is disconnected, relay KMP2 is attracted, at this time
One end of load is connected to by KMP2 with the first firewire, while the other end is connected to the fixation of the second firewire, and load both ends are 3 phases
The line voltage of 220V power supply, the line voltage are 220V；As input power grid phase-voltage measurement 220 × A% of >, A is between 70-80
When, judgement input power specification is 3 phase 380V, then relay KMP1 is attracted, relay KMP2 is disconnected, and the one end loaded at this time is logical
It crosses relay KMP1 to be connected to zero curve, while the other end is connected to the fixation of the first firewire, 3 phase 380V power supplys are accessed at load both ends
Phase voltage, the phase voltage are 220V.
In the optimal technical scheme of above-mentioned control method, wherein A value is 70.
In the optimal technical scheme of above-mentioned control method, the AC load is household electrical appliance, is further preferably
Air conditioner.
On the other hand, the present invention also provides a kind of AC load power grid adaptive controllers, which is characterized in that including
Phase-voltage measurement module detects load power source input side power grid phase voltage between load power source input side fire zero curve；Identification
Module identifies power grid specification according to the power grid phase voltage detected and by certain logic；Control module, according to identification
The power grid specification identification signal that module is sent issues control signal；Circuit switching element, according to the control signal of institute's control module
Switch route, select from taking electricity between fiery zero curve or from taking the electric supply voltage as air-conditioning, proof load two between two firewires
Hold constant voltage input.
In the optimal technical scheme of above-mentioned adaptive controller, wherein the circuit switching element is onboard relay
Device comprising relay KMP1 and relay KMP2.
In the optimal technical scheme of above-mentioned adaptive controller, wherein the circuit switching element is onboard relay
Device, wherein the constant voltage is in 220V or so.
In the optimal technical scheme of above-mentioned adaptive controller, the logic are as follows: when input power grid phase-voltage measurement
When≤220 × A%, A are between 70-80, judgement input power specification is 3 phase 220V, then relay KMP1 disconnection, relay
KMP2 is attracted, and the one end loaded at this time is connected to by KMP2 with the first firewire, while the other end is connected to the fixation of the second firewire, is born
The line voltage that both ends are 3 phase 220V power supplys is carried, which is 220V；When input 220 × A% of power grid phase-voltage measurement >, A exist
When between 70-80, judgement input power specification is 3 phase 380V, then relay KMP1 is attracted, KMP2 is disconnected, one loaded at this time
End is connected to by relay KMP1 with zero curve, while the other end is connected to the fixation of the first firewire, 3 phase 380V electricity of load both ends access
The phase voltage in source, the phase voltage are 220V.
In the optimal technical scheme of above-mentioned adaptive controller, wherein A value is 70.
On the other hand, the present invention also provides a kind of air-conditioning, mains input side has described in one of claim 5-8
A kind of AC load power grid self-reacting device.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, by load supplying line
The mains input side setting load power grid self-adaptive control module on road, the control module are powered on for the first time in load or are powered off every time
It is automatic to detect power grid phase voltage after powering on, and local power specification is identified according to the power grid phase voltage detected, and root
Route choosing is controlled from taking electricity between fiery zero curve or take electricity between two firewires according to the result after identification.So that self-adaptive controlled molding
During the work time, output voltage can automatically switch block with the variation of input voltage, compared with prior art, this hair
The bright control method automatically switched by the inclusion of the onboard relay of relay KMP1 and relay KMP2 is simple and reliable,
And without changing circuit, that is, it is suitable for different country or area.
Further, by controlling route choosing from taking electricity between fiery zero curve or from two firewires according to the result after identification
Between take electricity method: when input power grid phase-voltage measurement≤220 × A%, when A is between 70-80, determine input power specification
For 3 phase 220V, then relay KMP1 is disconnected, relay KMP2 is attracted, and the one end loaded at this time is connected by KMP2 and the first firewire
It is logical, while the other end is connected to the fixation of the second firewire, load both ends are the line voltage of 3 phase 220V power supplys, which is 220V；
When input power grid phase-voltage measurement 220 × A% of >, when A is between 70-80, judgements input power specification be 3 phase 380V, then after
Electric appliance KMP1 is attracted, relay KMP2 is disconnected, and the one end loaded at this time is connected to by relay KMP1 with zero curve, while the other end
It is connected to the fixation of the first firewire, the phase voltage of 3 phase 380V power supplys is accessed at load both ends, which is 220V.Method is directly transported
With the 3 phase 220V power line voltages feature identical as 3 phase 380V power supply phase voltages, the 220V input voltage kept constant is not required to
Circuit is additionally developed, does not need the equipment such as traditional current transformer and transformer also to keep stable output voltage, Ji Keshi
The function of different input supply voltages is now adapted to, to be effectively reduced cost.
The above description is only an overview of the technical scheme of the present invention, in order to make technological means of the invention clearer
Understand, reach the degree that those skilled in the art can be implemented in accordance with the contents of the specification, and in order to allow the present invention
Above and other objects, features and advantages can be more clearly understood, illustrated below with a specific embodiment of the invention
Explanation.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Below with reference to attached drawing, the invention will be further described:
Fig. 1 is the circuit diagram of the adaptive control method of AC load power grid of the present invention；
Fig. 2 is the flow chart of the adaptive control method of AC load power grid of the invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining technical principle of the invention, it is not intended that limit the scope of the invention.
Dynamic regulation is carried out to input voltage by pfc circuit in the prior art based on what is pointed out in background technique, is realized
The function of wider input supply voltage is adapted to, but this method needs to be arranged rectification module, flat wave module and inverter module,
Circuit is more complicated, and the economic benefit is not high；And pass through automatic switchover by the way that transformer is arranged in circuit in the prior art
The different taps of transformer realize different supply voltage outputs, but to equally exist circuit more complicated for this method, needs
The problem of additional setting other equipment, the economic benefit is not high.
Based on the above issues, the present invention provides a kind of control method that AC load power grid is adaptive, in load supplying
The mains input side setting load power grid self-adaptive control module of route, the control module power on for the first time in load or break every time
It is automatic to detect power grid phase voltage after electricity powers on, and local power specification is identified according to the power grid phase voltage detected, and
It selects to make to exchange from taking electricity between fiery zero curve or taking electricity between two firewires according to the result control switching circuit element after identification
Load input voltage keeps constant (preferably 220V), under different electrical power specification AC load it is general.And switch route
Element is the plate relay for being provided with relay KMP1 and relay KMP2, and control module passes through the selection load of control panel relay
Mains input side is from taking electricity between fiery zero curve or take electricity between two firewires.
Adaptively, the present invention also provides a kind of load power grid adaptive controller comprising phase-voltage measurement module,
Between the fiery zero curve of load power source input side, detection load input domain power grid phase voltage；Identification module, according to what is detected
Power grid phase voltage simultaneously identifies power grid specification by certain logic；Control module is advised according to the power grid that identification module is sent
Lattice identification signal issues control signal；Circuit switching element, according to the control signal of institute's control module switch route, selection from
Electricity is taken between fiery zero curve or as the supply voltage of load, the constant voltage in proof load both ends is defeated from electricity is taken between two firewires
Enter.Wherein preferred circuit switching element is onboard relay comprising relay KMP1 and relay KMP2.It is preferred that load both ends
Constant voltage is in 220V or so.
Its specific embodiment is described using preferred applicable object air conditioner as AC load case below.
It is the circuit diagram of the adaptive control method of AC load power grid of the invention referring to Fig. 1, Fig. 1.As shown in Figure 1,
The circuit diagram of the adaptive control method of AC load power grid includes load input power, phase-voltage measurement module, identification module
(not shown), control module (not shown), circuit switching element, AC load.
Wherein, phase-voltage measurement module, identification module, control module, line are sequentially connected in load input power input side
Road switching element, AC load.Wherein, load input power is that 3 phase 380V (containing 380-415V), 3 phase 220V (contain 208-
230V) alternating current input power supplying, phase-voltage measurement module are connected between alternating current input power supplying input side fire zero curve, AC load
The connection of the firewire of one end and alternating current input power supplying, the other end are sequentially connected the switch of load control signal control, circuit switching member
Part, AC load can be switched to the zero curve of alternating current input power supplying, Huo Zhetong by the relay KMP1 in circuit switching element
The relay KMP2 crossed in circuit switching element is switched to another firewire of alternating current input power supplying.
Phase-voltage measurement module is configurable for the voltage value of detection alternating current input power supplying phase voltage, and will test
Voltage value feeds back to identification module.
Identification module is configurable for identifying power grid specification according to the voltage value of phase-voltage measurement module feedback, and will know
Other result feeds back to control module.
Control module is configurable for the power grid specification fed back according to identification module and sends control signal to circuit switching
Element, by control route switching element switch route, select load the other end be by relay KMP1 with exchange input
The zero curve of power supply connects, or is connected by the firewire of relay KMP2 and alternating current input power supplying, constant with proof load both ends
Voltage input.
Technical solution of the present invention is elaborated below with reference to specific embodiment.
Referring to fig. 2, Fig. 2 is the flow chart of the adaptive control method of AC load power grid of the invention.As shown in Fig. 2,
Control method includes:
Step 1, complete machine powering is powered on comprising loading to power on or power off every time for the first time.
Step 2, input power phase-voltage measurement, i.e., by phase-voltage measurement module detect alternating current input power supplying firewire with
Voltage between zero curve.
Step 3, whether judge input power phase voltage≤220 × A%, and send control signal, i.e., basis detects
Power grid phase voltage identifies local power specification, and sends control signal according to the result after identification, controls route choosing
From taking electricity between fiery zero curve or take electricity between two firewires.
Route choosing is controlled from electricity is taken between fiery zero curve according to the result after identification or the method from electricity is taken between two firewires
Are as follows: as input power grid phase-voltage measurement≤220 × A%, when A is between 70-80, judgement input power specification is 3 phase 220V, then
Relay KMP1 is disconnected, relay KMP2 is attracted, and the one end loaded at this time is connected to by KMP2 with the first firewire, while the other end
It is connected to the fixation of the second firewire, load both ends are the line voltage of 3 phase 220V power supplys, which is 220V；When input power grid phase
Voltage detecting 220 × A% of >, when A is between 70-80, judgement input power specification be 3 phase 380V, then relay KMP1 be attracted,
Relay KMP2 is disconnected, and the one end loaded at this time is connected to by relay KMP1 with zero curve, while the other end and the first firewire are solid
The phase voltage of 3 phase 380V power supplys is accessed at fixed connection, load both ends, which is 220V.
Because fluctuation existing for network voltage itself, the value of A can guarantee preferably to identify power grid between 70-80
Specification, more preferably in scheme, the value of A is 70.
Step 4, circuit switching, when input power phase voltage is not≤220 × A%, relay KMP1 is attracted, relay
KMP2 is disconnected；When input power phase voltage is≤220 × A%, relay KMP2 is attracted, and relay KMP1 is disconnected.
Step 5, complete machine enters standby mode, that is, completes the adaptive access to alternating current input power supplying, preparation state.
On the other hand, the present invention also provides a kind of load power grid adaptive controllers comprising phase-voltage measurement
Module is located between load input domain power supply fire zero curve, detection load input domain power grid phase voltage；Identification module, according to detection
To power grid phase voltage and power grid specification is identified by certain logic；Control module, the electricity sent according to identification module
Network planning lattice identification signal issues control signal；Circuit switching element switches route, choosing according to the control signal of institute's control module
It selects from taking electricity between fiery zero curve or from taking supply voltage of the electricity as air-conditioning, the constant voltage in proof load both ends between two firewires
Input.AC load power grid adaptive controller compared with the prior art, control device provided by the invention do not need to increase
Oil (gas) filling device develops circuit again, and 3 phase 380V, the 3 phase 220V alternating current input power supplyings for adapting to extensive utilization can be realized, thus
It is effectively reduced cost.
In addition, on the other hand, the present invention also provides a kind of air-conditioning, which includes that above-mentioned load power grid is adaptive
Control device is answered, compared to the air conditioner before improvement, air-conditioning provided by the invention can automatically select phase voltage or line voltage is defeated
Enter, make AC load input voltage always in 220V or so, realize under different electrical power specification, AC load it is general, improve logical
With property, the differentiation of material is reduced, facilitates the material of producer to select, produce control.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
To sum up, AC load power grid self-adaptation control method provided by the present invention, control device, have the AC load
The load of adaptive controller, especially air conditioner pass through the mains input side setting load power grid in load supplying route
Self-adaptive control module, the specification of automatic identification power grid, according to recognition result from taking electricity between fiery zero curve or between two firewires
Take electricity, make AC load input voltage keep 220V it is constant, under different electrical power specification AC load it is general.The program without
Circuit need to be changed, increase equipment without additional, have the effect of simple and reliable, economical and efficient.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (12)
1. a kind of control method that AC load power grid is adaptive, which is characterized in that in the mains input side of load supplying route
Setting load power grid self-adaptive control module, the control module are automatic to examine after load powers on for the first time or powers off power on every time
Power grid phase voltage is surveyed, and local power specification is identified according to the power grid phase voltage detected, and according to the knot after identification
Fruit control switching circuit element selection protects AC load input voltage from taking electricity between fiery zero curve or taking electricity between two firewires
Hold it is constant, under different electrical power specification AC load it is general.
2. the adaptive control method of AC load power grid described in claim 1, it is characterised in that the input kept constant
Voltage is set as 220V.
3. the adaptive control method of AC load power grid according to claim 2, wherein the switch line circuit component is
It is provided with the plate relay of relay KMP1 and relay KMP2, control module selects load power source defeated by control panel relay
Entering side is from taking electricity between fiery zero curve or take electricity between two firewires.
4. the adaptive control method of AC load power grid according to claim 3, the result control according to after identification
Method of the circuit switching element selection processed from electricity is taken between fiery zero curve or from electricity is taken between two firewires are as follows: when input power grid phase voltage
≤ 220 × A% is detected, when A is between 70-80, judgement input power specification is 3 phase 220V, then relay KMP1 disconnection, relay
Device KMP2 is attracted, and the one end loaded at this time is connected to by KMP2 with the first firewire, while the other end is connected to the fixation of the second firewire,
The line voltage that both ends are 3 phase 220V power supplys is loaded, which is 220V；As input power grid phase-voltage measurement > 220 × A%, A
When between 70-80, judgement input power specification is 3 phase 380V, then relay KMP1 is attracted, relay KMP2 is disconnected, at this time
One end of load is connected to by relay KMP1 with zero curve, while the other end is connected to the fixation of the first firewire, load both ends access 3
The phase voltage of phase 380V power supply, the phase voltage are 220V.
5. the adaptive control method of AC load power grid according to claim 4, wherein A value is 70.
6. the adaptive control method of AC load power grid according to claim 5, the AC load is household electrical appliance,
Further preferred is air conditioner.
7. a kind of load power grid adaptive controller, which is characterized in that including phase-voltage measurement module, it is defeated to be located at load power source
Enter between the fiery zero curve of side, detection load input domain power grid phase voltage；Identification module, according to the power grid phase voltage detected and by
Certain logic identifies power grid specification；Control module, the power grid specification identification signal sent according to identification module issue
Control signal；Circuit switching element, according to the control signal of institute's control module switch route, selection from taken between fiery zero curve electricity or
It is electric as the supply voltage loaded, the constant voltage input in proof load both ends from being taken between two firewires.
8. a kind of load power grid self-reacting device according to claim 6, wherein the circuit switching element be it is onboard after
Electric appliance comprising relay KMP1 and relay KMP2.
9. a kind of load power grid self-reacting device according to claim 8, wherein the constant voltage in both ends that loads exists
220V or so.
10. a kind of load power grid self-reacting device according to claim 9, the logic are as follows: when input power grid phase voltage
≤ 220 × A% is detected, when A is between 70-80, judgement input power specification is 3 phase 220V, then relay KMP1 disconnection, relay
Device KMP2 is attracted, and the one end loaded at this time is connected to by KMP2 with the first firewire, while the other end is connected to the fixation of the second firewire,
The line voltage that both ends are 3 phase 220V power supplys is loaded, which is 220V；As input power grid phase-voltage measurement > 220 × A%, A
When between 70-80, judgement input power specification is 3 phase 380V, then relay KMP1 is attracted, KMP2 is disconnected, and is loaded at this time
One end is connected to by relay KMP1 with zero curve, while the other end is connected to the fixation of the first firewire, and 3 phase 380V are accessed at load both ends
The phase voltage of power supply, the phase voltage are 220V.
11. a kind of load power grid self-reacting device according to claim 10, wherein A value is 70.
12. a kind of air-conditioning, there are mains input side a kind of described in any item load power grids of claim 7-11 adaptively to fill
It sets.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110224405A (en) * | 2019-07-12 | 2019-09-10 | 威创集团股份有限公司 | The switching device and method of more power grids |
| CN113790507A (en) * | 2021-09-23 | 2021-12-14 | 海信（广东）空调有限公司 | Control method of air conditioner self-adaptive power grid and air conditioner |
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