CN205123255U - Multi-split power supply system and air conditioner - Google Patents
Multi-split power supply system and air conditioner Download PDFInfo
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- CN205123255U CN205123255U CN201520945031.4U CN201520945031U CN205123255U CN 205123255 U CN205123255 U CN 205123255U CN 201520945031 U CN201520945031 U CN 201520945031U CN 205123255 U CN205123255 U CN 205123255U
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Abstract
The utility model discloses a many online power supply system and air conditioner. Wherein, this system includes: the main machine is connected with a power grid, comprises a rectifying circuit and a main inverter circuit and is used for rectifying alternating current provided by the power grid into direct current through the rectifying circuit and inverting a first sub-direct current obtained by shunting into a first alternating current used by a load connected with the main machine through the main inverter circuit; and any slave machine comprises a slave inverter circuit, is electrically connected with the rectifying circuit of the master machine, is used for receiving the second sub direct current obtained by shunting the direct current and inverts the second sub direct current into a second alternating current for a load connected with the slave machine. The utility model provides an among the many online power supply system of prior art, the host computer makes the host computer and follow the independent supply circuit of machine all need deployment from the scheme that the electric energy was obtained from the electric wire netting simultaneously, leads to the complicated technical problem of many online power supply system circuit structure.
Description
Technical field
The utility model relates to electric control field, in particular to a kind of multi-connected machine electric power system and air conditioner.
Background technology
At present, multi-connected machine is common commercial type, Fig. 1 is the structural representation of the electric power system of a kind of multi-connected machine according to prior art, shown in composition graphs 1, in prior art, multi-connected machine electric power system is many is formed in parallel by 2 or multiple stage multi-connected machine, select wherein a multi-connected machine as main frame, remaining multi-connected machine is as from machine, main frame and every platform all access from machine the alternating current that electrical network obtains fixed voltage, then by after the direct current of AC conversion certain voltage, be the alternating current of voltage for the compressor of load multi-connected machine and frequency-adjustable again by above-mentioned DC conversion, and need main frame to be connected with between machine, namely main frame and every platform all adopt the conversion regime of AC-DC-exchange to be that compressor is powered from machine.
Fig. 2 is the principle schematic of the electric power system of a kind of multi-connected machine according to prior art, shown in composition graphs 2, prior art is adopted to be that multi-connected machine is when powering, due to main frame and the supply power mode all adopting AC-DC-exchange from machine, therefore main frame and all rectification and inverter circuit being integrated in a circuit board from machine, one piece of circuit board adopt two pieces of Intelligent Power Module carry out the conversion of electric current, wherein one piece is carried out rectification conversion to the alternating current obtained from electrical network, another block Intelligent Power Module is alternating current to the DC inverter exported from rectification circuit, such structure makes the area of circuit board larger, and wiring difficulty is large, and host circuit board is placed in the top from mounted circuit board, each investigation is from all needing during machine fault first to be taken off by host circuit board, the fault from mounted circuit board could be investigated, make as repairing inconvenience.
For in the multi-connected machine electric power system of prior art, main frame and make main frame from the scheme that machine simultaneously obtains electric energy from electrical network and all need to dispose independently power supply circuits from machine, cause the technical problem of multi-connected machine electric power system circuit structure complexity, not yet propose effective solution at present.
Utility model content
The utility model embodiment provides a kind of multi-connected machine electric power system and air conditioner, at least to solve in the multi-connected machine electric power system of prior art, main frame and make main frame from the scheme that machine simultaneously obtains electric energy from electrical network and all need to dispose independently power supply circuits from machine, causes the technical problem of multi-connected machine electric power system circuit structure complexity.
According to an aspect of the utility model embodiment, provide a kind of electric power system of multi-connected machine, comprise: a main frame, be connected with electrical network, comprise rectification circuit and main inverter circuit, AC rectification for being provided by electrical network by rectification circuit is direct current, and is the first alternating current for the load be connected with main frame by main inverter circuit by shunting the first sub-DC inverter of obtaining; At least one is from machine, is connected with the rectification circuit of main frame, comprises the inverter circuit from machine, and the DC inverter for being obtained by the rectification circuit from main frame is the alternating current for the load be connected with from machine.
According to the another aspect of the utility model embodiment, additionally provide a kind of air conditioner, this air conditioner comprises the electric power system of any one multi-connected machine above-mentioned.
In the utility model embodiment, adopt the mode of main inverter circuit and the rectification circuit from inverter circuit common bus access host, there is provided direct current for main inverter circuit with from inverter circuit by the rectification circuit of main frame simultaneously, reach and from machine, only there is object from inverter circuit in electric power system, thus to achieve electric power system according to the demand of the load compressor of multi-connected machine be the technique effect that load compressor is powered, and then solve in the multi-connected machine electric power system of prior art, main frame and make main frame from the scheme that machine simultaneously obtains electric energy from electrical network and all need to dispose independently power supply circuits from machine, cause the technical problem of multi-connected machine electric power system circuit structure complexity.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the electric power system of a kind of multi-connected machine according to prior art;
Fig. 2 is the principle schematic of the electric power system of a kind of multi-connected machine according to prior art;
Fig. 3 is the structural representation of the electric power system of a kind of optional multi-connected machine according to the utility model embodiment 1;
Fig. 4 is the electrical block diagram of the electric power system of a kind of optional multi-connected machine according to the utility model embodiment 1; And
Fig. 5 is the structural representation of the electric power system of a kind of optional multi-connected machine according to the utility model embodiment 2.
Embodiment
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in specification of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiment of the present utility model described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the utility model embodiment, provide a kind of multi-connected machine electric power system, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Fig. 3 is the structural representation of a kind of optional multi-connected machine electric power system according to the utility model embodiment 1, and as shown in Figure 3, this system comprises: main frame 30 and at least one is from machine 32.
A main frame 30, be connected with electrical network, comprise rectification circuit 301 and main inverter circuit 303, AC rectification for being provided by electrical network by rectification circuit is direct current, and is the first alternating current for the load be connected with main frame by main inverter circuit by shunting the first sub-DC inverter of obtaining.
Concrete, in above-mentioned main frame, the alternating current of electrical network exports can be fixed voltage be 380v, the rectification circuit in main frame can adopt intelligent power control module, and the inverter circuit in main frame also can be realized by Intelligent Power Module.As a kind of optional embodiment, rectification circuit in main frame is connected with electrical network, be direct current by the AC rectification of 380v after obtaining 380v alternating current from electrical network, then main inverter circuit obtains by shunting the first sub-direct current obtained in above-mentioned direct current, then is the load compressor that the adjustable alternating current of frequency and voltage controls multi-connected machine by DC inverter.
At least one is from machine 32, any one comprises from inverter circuit 321 from machine, any one is connected from inverter circuit with rectification circuit 301 electricity of main frame, the the second sub-direct current obtained for receiving shunting direct current, and be the second alternating current for the load be connected with from machine by the second sub-DC inverter.
Concrete, above-mentioned from the output being connected to finishing circuit from the main inverter circuit inverter circuit and main frame machine simultaneously, obtain the direct current exported from rectification circuit and shunt the second sub-direct current obtained.
In a kind of optional embodiment, main frame comprises rectification circuit and inverter circuit from machine to comprise a main frame and one for multiple on-line system, and can connect load at the inverter circuit of main frame, and the inverter circuit of main frame is the load supplying of above-mentioned main frame; Access from machine at the output of the rectification circuit of main frame, and connect multi-connected machine from the load compressor of machine and for power to the load compressor from machine from the inverter circuit latter end of machine.
Above-mentioned multi-connected machine electric power system uses rectification circuit and inverter circuit in main frame, and by the rectification circuit output end from the direct access host of machine, make not need from the direct power taking of electrical network from machine, the direct current of direct acquisition after the rectifier circuit rectifies in main frame, the technique effect that the load compressor that to achieve from the alternating current after machine only needs an inverter circuit and exportable inversion be multi-connected machine is powered, thus make that the integrated circuit circuit of multi-connected machine electric power system is comparatively simple, electric power system designs simplification; The simplification of electric power system circuit makes the emc issue in electric power system obtain alleviation; Electric power system is divided into rectification and inversion two parts by electric power system designs simplification, make when electric power system breaks down, the position of breaking down is found according to the function broken down, facilitate maintenance process, and then solve in the multi-connected machine electric power system of prior art, main frame and make main frame from the scheme that machine simultaneously obtains electric energy from electrical network and all need to dispose independently power supply circuits from machine, causes the technical problem of multi-connected machine electric power system circuit structure complexity.
Alternatively, in the electric power system that the application proposes, the power output of the rectification circuit of main frame at least comprises: the main inverter circuit of main frame and each summation from the power needed for inverter circuit from machine.
The rectification circuit of the main frame in the electric power system of prior art is only powered for the main inverter circuit in main frame, and the power output of the main frame therefore in existing electric power system can meet inverter circuit; And the application propose electric power system in, rectification circuit is not only main inverter circuit and provides direct current, also needs to providing direct current from your power transformation road, therefore the power output of rectification circuit should meet main frame main inverter circuit and each from machine from inverter circuit.In one optionally example, when the electric power system of prior art being transform as the electric power system that the application proposes, due to the rectification circuit of main frame inside in the application and the main inverter circuit of main frame with from being connected from inverter circuit in machine, rectification circuit needs to be main inverter circuit and powering from inverter circuit simultaneously, therefore, need the summation power output of rectification circuit in main frame being adjusted to main inverter circuit and each power from inverter circuit in this electric power system, in order to reserve certain allowance, also the power output of the rectification circuit of main frame can be adjusted to the power summation being greater than all inverter circuits in electric power system.
As from the foregoing, the above embodiments of the present application are by be main frame main inverter circuit and each summation from the power needed for inverter circuit from machine of the minimum value of power output of the rectification circuit of main frame in definition electric power system, the main frame reaching this electric power system meets the technique effect of self and each power demands from machine, thus all inverter circuits achieved in electric power system provide galvanic technical purpose by the rectification circuit in main frame, solve in the electric power system due to prior art, the structure that slave all adopts rectification circuit to be connected with inverter circuit, the technical problem of the electric power system complex circuit caused.
Alternatively, in the electric power system that the application proposes, when electric power system comprise multiple from machine, eachly adopt the rectification circuit of bus access host shared from machine.
Concrete, in above-mentioned electric power system, bus can be export from the rectification circuit of main frame galvanic wire is provided.
In one optionally example, comprising two from the electric power system of machine, rectification circuit in main frame exports the direct current obtained after over commutation, according to galvanic positive and negative extraction two wires, using two wires as above-mentioned two incoming lines from the inverter circuit of machine access electric power system, in another kind optionally example, when being multiple from machine, by the galvanic wire that multiple input from machine and rectification circuit provide, be used for obtain rectification circuit export direct current.
As from the foregoing, in above-described embodiment that the application provides, being provided as electric power system again comprises multiple from the connected mode from machine and main frame machine, propose many from machine all by the scheme of the rectification circuit of common bus access host, make not need arranging rectification circuit from machine, thus make to simplify from the internal wiring of machine, the slave solving electric power system in prior art all needs access electrical network to obtain alternating current, all comprise rectification circuit in the slave caused, thus make the technical problem of electric power system complex circuit.
Optionally, in the above-mentioned electric power system of the application, rectification circuit comprises:
Current supply circuit, is connected with electrical network, for receiving the alternating current that electrical network provides.
First smart power circuits, is connected between current supply circuit and main inverter circuit, and the AC rectification for being provided by electrical network is direct current, and direct current is shunted the first sub-DC power transmission of obtaining to main inverter circuit.
As from the foregoing, the alternating current that the above-mentioned electric power system provided in the application adopts current supply circuit to receive electrical network to provide, the AC rectification adopting the first Intelligent Power Module to be provided by electrical network is direct current, and direct current is shunted the first sub-DC power transmission of obtaining to main inverter circuit, make the rectification circuit in main frame can carry out rectification to the alternating current obtained from electrical network, and the DC inverter making the main inverter circuit in main frame rectifier circuit rectifies can be obtained is the alternating current that the load be connected with main inverter circuit uses, thus reach the technical purpose that electric power system is load supplying.
Optionally, in the above-mentioned electric power system of the application, current supply circuit comprises:
Charging circuit, is connected with electrical network, for receiving alternating current.
Concrete, after the alternating current that above-mentioned charging circuit reception electrical network provides, alternating current is flowed to by charging circuit and after the first smart circuit, charges to accumulate road.
Accumulator, via the first smart power circuits access charging circuit, for receiving and storing the direct current obtained via the first smart power circuits rectification, generates charging current.
Concrete, accumulator, after the direct current obtaining rectification circuit output, stores above-mentioned direct current, it should be noted that accumulator outwards discharges when the direct current stored makes accumulator reach certain voltage herein again, generates charging current.
As from the foregoing, the above embodiments of the present application are connected with electrical network by charging circuit, receive alternating current, by accumulator, via the first smart power circuits access charging circuit, receive and store the direct current obtained via the first smart power circuits rectification, generate charging current, the direct current that rectification circuit is provided is not only inverter circuit and carries out inversion, is also that accumulator is powered by charging circuit, reaches the technique effect that charging circuit produces charging current.
Optionally, in the above-mentioned electric power system of the application, charging circuit comprises:
Power switch, is connected between electrical network and the first smart power circuits.
Concrete, above-mentioned power switch can be connected with each phase line of three-phase alternating current, and accepts the control of same controller, disconnects simultaneously or closes.
Charging resistor, is parallel to the two ends of power switch, for when power switch disconnects, makes alternating current transfer to the first smart power circuits via charging resistor.
Concrete, the resistance of above-mentioned charging resistor is as the criterion can prevent short circuit, and two charging resistors can be selected to be parallel to any two switching circuit two ends.
In a kind of optional embodiment, above-mentioned power switch is in the state of disconnection, the alternating current direct that electrical network provides was connected resistance and was flowed to the first smart power circuits, now due to resistant series in circuit, electric current in circuit is reduced, avoids by the first smart circuit directly for accumulator charges the phenomenon of the line short that may cause; When above-mentioned power switch is in closed state, by charging resistor short circuit, the power consumption of circuit can be reduced.
Reactor, is connected between power switch and the first smart power circuits, for receiving and storing the alternating current that electrical network provides.
Concrete, above-mentioned reactor is the reactor be connected with electrical network, this reactor can be three-phase reactor, each phase line of the three-phase alternating current that electrical network provides accesses a reactor in three-phase reactor respectively, three-phase reactor can be iron core dry-type, in order to reduce the pause mark of reactor, high-quality cold-reduced silicon sheet can be adopted as the making material of iron core, and tin-plated copper tubes cross-talk can be adopted to reactor leading-out terminal, and preservative treatment is adopted to reactor exposed part.
As from the foregoing; the electric power system that the above embodiments of the present application provide is connected with electrical network by power switch; and charging resistor and above-mentioned power switch are connected in parallel in circuit; again reactor is connected with power switch; the phenomenon of line short making charging circuit again for causing because electric current is excessive when accumulator charges, reaches protective circuit and reduces the technique effect of circuit power consumption.
Optionally, in the above-mentioned electric power system of the application, power switch is the relay controlled by controller.
Concrete, above-mentioned relay is automatically controlled device, and when controlling the controlled quentity controlled variable generation Spline smoothing of above-mentioned relay in electric power system, relay generation adhesive action, makes power switch close.
As from the foregoing, it can be relay that the upper embodiment that the application proposes proposes power switch, make in electric power system circuit, power switch, the alternating current that electrical network is provided is without saying overcharge resistance, directly pass through the line flows after relay closes to reactor, reach the technical purpose reducing electric power system power consumption, achieve the effect of electric power system circuit by default controlled quentity controlled variable control circuit simultaneously.
Optionally, shown in composition graphs 4, in the above-mentioned electric power system of the application, accumulator comprises:
Charge and discharge capacitance, is connected to and between the first smart power circuits and main inverter circuit, for receiving and storing the direct current that the first smart power circuits exports, and exports charging current.
In a kind of optional embodiment, after charge and discharge capacitance and above-mentioned switch power parallel, be connected between rectification circuit and inverter circuit, after multi-connected machine electric power system access electrical network, the rectification circuit of main frame carries out uncontrollable rectification, and export the direct current of certain voltage, the direct current of this certain voltage can be 530v, charge and discharge capacitance, after charge capacity reaches above-mentioned certain voltage, exports charging current.
In another kind of optional embodiment, the electric power system that the application proposes is out of service after operation a period of time, when startup optimization again, after alternating current is exported by electrical network, need through the first smart power circuits rectification, main inverter circuit and could obtain from inverter circuit the direct current that rectification obtains and carry out inversion, for the load compressor of corresponding multi-connected machine is powered, said process needs to expend the regular hour, within this period of time, charge and discharge capacitance can by the electricity release that is full of before out of service with main inverter circuit with from inverter circuit, principal and subordinate's inverter circuit can be run in the short time after automatic power system, power at compressor for lying prostrate accordingly, shorten the running time of system.
As from the foregoing, charge and discharge capacitance is connected between the first smart power circuits and main inverter circuit by above-described embodiment that the application proposes, receive and store first smart power circuits export direct current, and export charging current, reach the technique effect of the control device output charging current to electric power system, and reach the technical purpose of the delay time shortened when electric power system starts again, solve the technical problem that when electric power system starts again, delay time is long
Optionally, in the above-mentioned electric power system of the application, rectification circuit also comprises:
Control circuit, is electrically connected with current supply circuit and the first smart power circuits respectively, generates control signal for the charging current provided according to current supply circuit, and control signal closes for controlling power switch.
Concrete, above-mentioned control circuit can comprise one or more controller, controls the controllable devices in electric power system.
In a kind of optional embodiment, after the charging current that control circuit acquisition charge and discharge capacitance provides, start the controlling functions of control circuit, control the power switch Bick in charging circuit, and control the first smart power circuits, under the control of control circuit, rectification is carried out to alternating current.
As from the foregoing, what the application proposed above mentioned embodiment provides the control circuit be electrically connected with current supply circuit and the first smart power circuits, make electric power system can according to the controlling run of control circuit, because the control signal of control circuit can generate according to the control program of default setting, therefore control circuit to achieve in electric power system according to the technique effect that control signal is run, and reaches and control electric power system the technical purpose that the load compressor that is multi-connected machine provides suitable alternating current.
Optionally, shown in composition graphs 4, in the above-mentioned electric power system of the application, control circuit comprises:
Controller, is connected with power switch, for generating control signal when obtaining electric.
Concrete, above-mentioned controller can be programmable logic controller (PLC), above-mentioned controller piezoelectric voltage can be 24V, being above-mentioned controller provides 24v direct current that controller can be made to run, program according to controller internal preset controls the part of devices in electric power system circuit, in one optionally example, controller can also be connected with the first smart power circuits, controls the rectification of the first smart power circuits to alternating current.
Switching Power Supply, is parallel to charge and discharge capacitance two ends, and access controller, for obtaining the charging current of charge and discharge capacitance release, and power to controller.
Concrete, it is that controller is powered that Switching Power Supply can export 24v direct current.
In a kind of optional embodiment, when electric power system gets involved electrical network first, above-mentioned power switch is in off-state, the 380v alternating current that electrical network provides is by after charging resistor and reactor, through the rectified action of the first smart power circuits, become the direct current of 530v, for being connected to the charge and discharge capacitance charging at the first Intelligent Power Module two ends, when charge and discharge capacitance discharges, the Switching Power Supply being connected to charge and discharge capacitance two ends obtains electric, Switching Power Supply is after the direct current obtaining charge and discharge capacitance output, export the direct current of 24v, this 24v direct current is used for powering for above-mentioned controller.
As from the foregoing, above-described embodiment that the application provides adopts controller to generate control signal and controls electric power system operation, and adopt the power supply signal of Switching Power Supply formation controller to be that controller is powered, make electric power system can provide applicable alternating current for the load compressor of multi-connected machine, and reach the low-voltage light current that the high-voltage direct-current electricity exported by rectification circuit is converted into controller demand, the technique effect of electric power system is controlled again by controller, solve when electric power system carries out controlled rectification according to the control signal of controller, power supply due to controller is low-voltage light current, and the direct current that electric power system provides for needing of causing of high voltage forceful electric power for controller provides the technical problem of low-voltage light current power supply again.
Optionally, shown in composition graphs 4, in the above-mentioned electric power system of the application, the first smart power circuits comprises:
N number of IGBT module, 2i-1 IGBT module is connected with 2i IGBT module and is formed N/2 bridge circuit, N/2 bridge circuit parallel connection forms the first smart power circuits, wherein, exported by the upper brachium pontis of N/2 bridge circuit and lower brachium pontis via the alternating current after the first smart power circuits rectification.
As a kind of optional embodiment, when the alternating current that electrical network provides is three-phase alternating current, above-mentioned first smart power circuits comprises 6 IGBT circuit, wherein, six IGBT circuit formation in parallel 3 bridge circuits between two, three bridge circuit series connection formation first smart power circuits, the triple line of three-phase alternating current accesses between two IGBT circuit of different bridge circuits respectively, provides power supply three-phase alternating current to carry out rectification to electrical network.
As from the foregoing, above-described embodiment that the application provides adopts N number of IGBT circuit to form the first smart power circuits, the first smart power circuits is made to carry out rectification to alternating current, provide operable direct current for main inverter circuit with from your power transformation road, thus furthermore achieved that the technical purpose that the load compressor for multi-connected machine is powered.
Optionally, in the above-mentioned electric power system of the application, main inverter circuit comprises:
Second smart power circuits, is connected with rectification circuit, for by the first sub-DC inverter being the first alternating current for the load be connected with main frame.
As from the foregoing, above-described embodiment that the application provides adopts the second smart power circuits to form main inverter circuit, the DC inverter that achieving provides rectification circuit is the technique effect of the alternating current that load compressor uses, reach the technical purpose that the load compressor for multi-connected machine is powered, the alternating current that solving electrical network provides can not meet the technical problem of compressor to the demand of the frequency and voltage of alternating current.
Optionally, shown in composition graphs 4, in the above-mentioned electric power system of the application, the second smart power circuits comprises:
N number of IGBT module, 2i-1 IGBT module is connected with 2i IGBT module and is formed N/2 bridge circuit, N/2 bridge circuit parallel connection forms the second smart power circuits, the upper brachium pontis of N/2 bridge circuit and lower brachium pontis are connected to the upper brachium pontis of the first smart power circuits and lower brachium pontis, and receive the first sub-direct current of the first smart power circuits output.
As a kind of optional embodiment, when the alternating current that electrical network provides is three-phase alternating current, above-mentioned second smart power circuits comprises 6 IGBT circuit, wherein, six IGBT circuit formation in parallel 3 bridge circuits between two, three bridge circuit series connection formation second smart power circuits, and the upper and lower bridge arm of 3 of the second smart power circuits bridge circuits is connected with the upper and lower bridge arm of the first smart power circuits, receives the direct current that the first smart power circuits provides.
As from the foregoing, above-described embodiment that the application provides adopts N number of IGBT module to form the second smart power circuits, by reaching use second Intelligent Power Module to the control of IGBT module direct current carried out to the technique effect of inversion, and then achieve the technical purpose that the load compressor for multi-connected machine powers.
Optionally, in the above-mentioned electric power system of the application, comprise from inverter circuit:
3rd smart power circuits, is connected to the output of rectification circuit, for by the second sub-DC inverter being the second alternating current for the load be connected with from machine.
As from the foregoing, above-described embodiment that the application provides adopts the 3rd smart power circuits to form from inverter circuit, make from the first smart power circuits main frame, to obtain direct current from inverter circuit, again inversion is carried out to the direct current obtained, thus for power with the load compressor be connected from machine, further solve main frame and make main frame from the scheme that machine obtains electric energy from electrical network simultaneously and all need to dispose independently power supply circuits from machine, causing the technical problem of multi-connected machine electric power system circuit structure complexity.
Optionally, in the above-mentioned electric power system of the application, the 3rd smart power circuits comprises:
N number of IGBT module, 2i-1 IGBT module is connected with 2i IGBT module and is formed N/2 bridge circuit, N/2 bridge circuit parallel connection forms the 3rd smart power circuits, the upper brachium pontis of N/2 bridge circuit and lower brachium pontis are connected to the upper brachium pontis of the first smart power circuits and lower brachium pontis, and receive the second sub-direct current of the first smart power circuits output.
As a kind of optional embodiment, when the alternating current that electrical network provides is three-phase alternating current, above-mentioned 3rd smart power circuits comprises 6 IGBT circuit, wherein, six IGBT circuit formation in parallel 3 bridge circuits between two, three bridge circuit series connection formation the 3rd smart power circuits, and the upper and lower bridge arm of 3 bridge circuits of the 3rd smart power circuits is connected with the upper and lower bridge arm of the first smart power circuits, receives the direct current that the first smart power circuits provides.
As from the foregoing, above-described embodiment that the application proposes gives the composition structure of the 3rd smart power circuits, make to adopt N number of IGBT module can form the 3rd smart power circuits, thus to reach the DC inverter provided by the first smart power circuits be the alternating current that the load compressor be connected with from machine uses.
Optionally, in the above-mentioned electric power system of the application, electric power system also comprises:
Heat abstractor, is installed on main frame and/or the circuit board dorsal part from machine, for the heat distributing main frame and/or operationally produce from machine.
Concrete, above-mentioned heat abstractor can be the sheet alloy with good heat translation function, and in one optionally example, above-mentioned heat abstractor can adopt aluminium sheet to complete the heat radiation of electric power system.
As from the foregoing, above-described embodiment that the application provides heat abstractor is installed on main frame and/from the circuit board dorsal part of machine, make the designs simplification of electric power system, solve in prior art because heat abstractor is placed in the baroque technical problem of electric power system that inside causes.
Embodiment 2
The utility model additionally provides a kind of air conditioner, and this air conditioner comprises any one multi-connected machine electric power system in above-described embodiment 1.
In one optionally example, above-mentioned air-conditioning can be the air conditioning multi-couple machine with two multi-connected machines, select wherein multi-connected machine as the main frame of multiple on-line system, for this host supplying power is also the main frame of above-mentioned multi-connected machine electric power system, another multi-connected machine be then this multiple on-line system from machine, for this power supply from machine be also above-mentioned multi-connected machine electric power system from machine.
The main frame of above-mentioned multi-connected machine electric power system can comprise rectification circuit and inverter circuit two parts, only includes inverter circuit part from machine.At main frame with from the inverter circuit of machine, Intelligent Power Module can be used to realize galvanic inversion, Intelligent Power Module can carry out corresponding selection according to 120% of the maximum power of the load compressor be connected with from machine, the Intelligent Power Module of the inverter circuit in main frame also can carry out corresponding selection according to 120% of the maximum operate power of the load compressor be connected with main frame, due to main frame and the output being all connected to the rectification circuit of main frame from the inverter circuit of machine, then confirm that main frame is with after the power grade required for machine, the power of the rectification circuit in main frame should at least be greater than main frame and the power summation of inverter circuit from machine, therefore corresponding Intelligent Power Module is selected according to the inverter circuit in main frame with from the summation of the power of the inverter circuit machine.
In another kind of optional embodiment, shown in composition graphs 5, still for the above-mentioned air conditioning multi-couple machine system with two multi-connected machines, when needs increase by one or N platform from machine for above-mentioned multi-connected machine, can select and the above-mentioned Intelligent Power Module the same from machine, the inverter circuit be made up of Intelligent Power Module is accessed the rectification circuit of above-mentioned main frame, simultaneously because the complexity of the rectification circuit of main frame increases, therefore the intelligent power of rectification circuit will be reselected according to new load, an inverter circuit in when the Intelligent Power Module of rectification module is met and two demands from the inverter circuit of two machine.
In another optional embodiment, still for the above-mentioned air conditioning multi-couple machine system with two multi-connected machines, when this air conditioning multi-couple machine system adopts the supply power mode of prior art, i.e. main frame and all there is rectification circuit and inverter circuit from machine, main frame and all access electrical network power taking from the rectification circuit of machine, and main frame is connected with from machine, for controlling the inverter circuit from machine, select a multi-connected machine as main frame, another multi-connected machine is then from machine, because the load compressor of multi-connected machine does not change, then main frame and the inverter circuit from machine do not need variation, only need to take out from the rectification circuit machine, and by the output from the rectification circuit in the inverter circuit access host in machine, it should be noted that, because the inverter circuit from machine has directly accessed the rectification circuit of main frame, therefore the load of main frame rectification circuit increases, need according to being replaced by the Intelligent Power Module matched with new power, after changing the Intelligent Power Module of the rectification circuit in main frame, the rectification circuit of main frame is the inverter circuit in main frame and the direct current from the inverter circuit output 650v machine, main frame and the direct current exported from the inverter circuit acquisition rectification circuit machine, according to the demand power of the load compressor be connected with inverter circuit, inversion is carried out to the direct current obtained.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (17)
1. an electric power system for multi-connected machine, is characterized in that, comprising:
A main frame, be connected with electrical network, comprise rectification circuit and main inverter circuit, AC rectification for being provided by described electrical network by described rectification circuit is direct current, and is the first alternating current for the load be connected with described main frame by described main inverter circuit by shunting the first sub-DC inverter of obtaining;
At least one is from machine, any one comprises from inverter circuit from machine, be electrically connected from inverter circuit with the described rectification circuit of described main frame described in any one, for receiving the described direct current of shunting and the second sub-direct current of obtaining, and be for the second alternating current with the described load be connected from machine by described second sub-DC inverter.
2. electric power system according to claim 1, is characterized in that, the power output of the described rectification circuit of described main frame at least comprises: the described main inverter circuit of described main frame and each described from described in machine from the summation of the power needed for inverter circuit.
3. electric power system according to claim 1, is characterized in that, when described electric power system comprise multiple from machine, eachly adopt the bus shared to access the described rectification circuit of described main frame from machine.
4. according to the electric power system in claim 1-3 described in any one, it is characterized in that, described rectification circuit comprises:
Current supply circuit, is connected with described electrical network, for receiving the alternating current that described electrical network provides;
First smart power circuits, be connected between described current supply circuit and described main inverter circuit, AC rectification for being provided by described electrical network is described direct current, and described direct current is shunted the described first sub-DC power transmission that obtains to described main inverter circuit.
5. electric power system according to claim 4, is characterized in that, described current supply circuit comprises:
Charging circuit, is connected with described electrical network, for receiving described alternating current;
Accumulator, accesses described charging circuit via described first smart power circuits, for receiving and storing the direct current obtained via described first smart power circuits rectification, generates charging current.
6. electric power system according to claim 5, is characterized in that, described charging circuit comprises:
Power switch, is connected between described electrical network and described first smart power circuits;
Charging resistor, is parallel to the two ends of described power switch, for when described power switch disconnects, makes described alternating current transfer to described first smart power circuits via described charging resistor;
Reactor, is connected between described power switch and described first smart power circuits, for receiving and storing the alternating current that described electrical network provides.
7. electric power system according to claim 6, is characterized in that, described power switch is the relay controlled by controller.
8. electric power system according to claim 5, is characterized in that, described accumulator comprises:
Charge and discharge capacitance, is connected to and between described first smart power circuits and described main inverter circuit, for receiving and storing the described direct current that described first smart power circuits exports, and exports described charging current.
9. electric power system according to claim 8, is characterized in that, described rectification circuit also comprises:
Control circuit, is electrically connected with described current supply circuit and described first smart power circuits respectively, generates control signal for the described charging current provided according to described current supply circuit, and described control signal closes for controlling power switch.
10. electric power system according to claim 9, is characterized in that, described control circuit comprises:
Controller, is connected with described power switch, for generating described control signal when obtaining electric;
Switching Power Supply, is parallel to described charge and discharge capacitance two ends, and accesses described controller, for obtaining the described charging current of described charge and discharge capacitance release, and powers to described controller.
11. electric power systems according to claim 4, is characterized in that, described first smart power circuits comprises:
N number of IGBT module, 2i-1 IGBT module is connected with 2i IGBT module and is formed N/2 bridge circuit, described N/2 bridge circuit parallel connection forms described first smart power circuits, wherein, exported by the upper brachium pontis of a described N/2 bridge circuit and lower brachium pontis via the described alternating current after described first smart power circuits rectification.
12. electric power systems according to claim 1, is characterized in that, described main inverter circuit comprises:
Second smart power circuits, is connected with described rectification circuit, for by described first sub-DC inverter being the first alternating current for the load be connected with described main frame.
13. electric power systems according to claim 12, is characterized in that, described second smart power circuits comprises:
N number of IGBT module, 2i-1 IGBT module is connected with 2i IGBT module and is formed N/2 bridge circuit, described N/2 bridge circuit parallel connection forms described second smart power circuits, the upper brachium pontis of a described N/2 bridge circuit and lower brachium pontis are connected to the upper brachium pontis of the first smart power circuits and lower brachium pontis, and receive the described first sub-direct current of described first smart power circuits output.
14. electric power systems according to claim 1, is characterized in that, describedly comprise from inverter circuit:
3rd smart power circuits, is connected to the output of described rectification circuit, for being for the second alternating current with the described load be connected from machine by described second sub-DC inverter.
15. electric power systems according to claim 14, is characterized in that, described 3rd smart power circuits comprises:
N number of IGBT module, 2i-1 IGBT module is connected with 2i IGBT module and is formed N/2 bridge circuit, described N/2 bridge circuit parallel connection forms described 3rd smart power circuits, the upper brachium pontis of a described N/2 bridge circuit and lower brachium pontis are connected to the upper brachium pontis of the first smart power circuits and lower brachium pontis, and receive the described second sub-direct current of described first smart power circuits output.
16. electric power systems according to claim 1, is characterized in that, described electric power system also comprises:
Heat abstractor, is installed on described main frame and/or the described circuit board dorsal part from machine, for distributing described main frame and/or the described heat operationally produced from machine.
17. 1 kinds of air conditioners, is characterized in that, comprise the electric power system of the multi-connected machine in claim 1 to 16 described in any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520945031.4U CN205123255U (en) | 2015-11-23 | 2015-11-23 | Multi-split power supply system and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520945031.4U CN205123255U (en) | 2015-11-23 | 2015-11-23 | Multi-split power supply system and air conditioner |
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| CN205123255U true CN205123255U (en) | 2016-03-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356460A (en) * | 2015-11-23 | 2016-02-24 | 珠海格力电器股份有限公司 | Multi-split air conditioner and power supply system and method thereof |
| CN107645203A (en) * | 2016-07-21 | 2018-01-30 | 阿里巴巴集团控股有限公司 | Energy storage frequency convertor system |
| CN108571802A (en) * | 2018-05-21 | 2018-09-25 | 珠海格力电器股份有限公司 | Multi-split air conditioner and heat dissipation method thereof |
| WO2023130702A1 (en) * | 2022-01-05 | 2023-07-13 | 佛山市顺德区美的电子科技有限公司 | Air-conditioning system, control method, operation control apparatus, and storage medium |
-
2015
- 2015-11-23 CN CN201520945031.4U patent/CN205123255U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356460A (en) * | 2015-11-23 | 2016-02-24 | 珠海格力电器股份有限公司 | Multi-split air conditioner and power supply system and method thereof |
| CN107645203A (en) * | 2016-07-21 | 2018-01-30 | 阿里巴巴集团控股有限公司 | Energy storage frequency convertor system |
| CN108571802A (en) * | 2018-05-21 | 2018-09-25 | 珠海格力电器股份有限公司 | Multi-split air conditioner and heat dissipation method thereof |
| WO2023130702A1 (en) * | 2022-01-05 | 2023-07-13 | 佛山市顺德区美的电子科技有限公司 | Air-conditioning system, control method, operation control apparatus, and storage medium |
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