CN103743069B - A kind of new energy variable-frequency air conditioner and control method thereof - Google Patents

A kind of new energy variable-frequency air conditioner and control method thereof Download PDF

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CN103743069B
CN103743069B CN201410025882.7A CN201410025882A CN103743069B CN 103743069 B CN103743069 B CN 103743069B CN 201410025882 A CN201410025882 A CN 201410025882A CN 103743069 B CN103743069 B CN 103743069B
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umformer
igbt pipe
aerogenerator
photovoltaic cell
inductance
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CN103743069A (en
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韩军良
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GD Midea Air Conditioning Equipment Co Ltd
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Guangdong Midea Refrigeration Equipment Co Ltd
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Abstract

The invention belongs to air conditioner controlling technology field, it provides a kind of new energy variable-frequency air conditioner and control method thereof. the present invention by adopting aerogenerator in new energy variable-frequency air conditioner, rectification module, voltage Unload module, one DC/DC umformer, photovoltaic cell, 2nd DC/DC umformer, fuel cell, 3rd DC/DC umformer, two-way AC/DC umformer and ultracapacitor, achieve wind energy, sun power, fuel cell and city's electricity carry out coordinating fully to utilize to be powered by convertible frequency air-conditioner, and electric energy aerogenerator and/or photovoltaic cell exported when air-conditioning is not started shooting implements to generate electricity by way of merging two or more grid systems to reach the object making full use of wind energy and/or sun power to electrical network, substitute existing alminium electrolytic condenser by ultracapacitor simultaneously and to extend the work-ing life of convertible frequency air-conditioner and improve the serviceability of convertible frequency air-conditioner.

Description

A kind of new energy variable-frequency air conditioner and control method thereof
Technical field
The invention belongs to air conditioner controlling technology field, particularly relate to a kind of new energy variable-frequency air conditioner and control method thereof.
Background technology
Along with the conventional fossil energy in the whole world is day by day exhausted, generation of electricity by new energy technology because of have green, the advantage of environmental protection and power for air-conditioning more and more. At present, existing new energy variable-frequency air conditioner is solar airconditioning only, and solar airconditioning function singleness, when air-conditioning is shut down time, can not realize the function of generating electricity by way of merging two or more grid systems of Guang Fuyu city electricity, thus cause the problem that solar energy resources is not fully utilized; In addition, power decoupled electric capacity in existing convertible frequency air-conditioner generally adopts alminium electrolytic condenser, along with the increase of working hour, the electrolytic solution of alminium electrolytic condenser can by sealing material to exosmosis, diffusion and volatilization, thus cause electrical capacity to reduce gradually, work-ing life shortens and degradation, and then can seriously affect work-ing life and the serviceability of convertible frequency air-conditioner. Therefore, prior art exists and cannot realize new forms of energy utilizing fully, and causes the problem that work-ing life shortens and serviceability reduces of convertible frequency air-conditioner because adopting alminium electrolytic condenser.
Summary of the invention
It is an object of the invention to provide a kind of new energy variable-frequency air conditioner, it is intended to solve new forms of energy realization cannot be utilized fully existing for prior art, and cause the problem that work-ing life shortens with serviceability reduces of convertible frequency air-conditioner because adopting alminium electrolytic condenser.
The present invention realizes like this, a kind of new energy variable-frequency air conditioner, comprise indoor machine, controller, the first invertor, the 2nd invertor, compressor and blower fan, the described indoor machine work of described controller control, and described controller also controls described first invertor and described 2nd invertor drives described compressor and described blower fan respectively;
Described new energy variable-frequency air conditioner also comprises:
Aerogenerator, rectification module, voltage Unload module, a DC/DC umformer, photovoltaic cell, the 2nd DC/DC umformer, fuel cell, the 3rd DC/DC umformer, two-way AC/DC umformer and ultracapacitor;
The exchange output plus terminal of described aerogenerator exports, with exchanging, the input that negative terminal connects described rectification module respectively and is just holding and inputting negative terminal, the input that the output terminal of described rectification module and ground end connect a described DC/DC umformer respectively is just being held and is inputting negative terminal, the input terminus of described voltage Unload module and output terminal connect output terminal and the ground end of described rectification module respectively, the input that the output terminal of described photovoltaic cell and ground end connect described 2nd DC/DC umformer respectively is just being held and is inputting negative terminal, the input that the output terminal of described fuel cell and ground end connect described 3rd DC/DC umformer respectively is just being held and is inputting negative terminal, the electrical network coupling end access city electricity of described two-way AC/DC umformer, the bus of described two-way AC/DC umformer is just holding the positive pole and the negative pole that connect direct current bus with bus negative terminal respectively, the positive pole of described ultracapacitor and negative pole connect positive pole and the negative pole of described direct current bus respectively, the output plus terminal of a described DC/DC umformer, the output plus terminal of described 2nd DC/DC umformer and the output plus terminal of described 3rd DC/DC umformer are connected to the positive pole of described direct current bus altogether, the output negative terminal of a described DC/DC umformer, the output negative terminal of described 2nd DC/DC umformer and the output negative terminal of described 3rd DC/DC umformer are connected to the negative pole of described direct current bus altogether, the input of described first invertor is just holding the input with described 2nd invertor just holding the positive pole being connected to described direct current bus altogether, the input negative terminal of described first invertor and the input negative terminal of described 2nd invertor are connected to the negative pole of described direct current bus altogether, described voltage Unload module, a described DC/DC umformer, described 2nd DC/DC umformer, described 3rd DC/DC umformer and described two-way AC/DC umformer also connect described controller,
The alternating-current that described aerogenerator is exported by described rectification module exports direct current after carrying out rectification process;
A described DC/DC umformer exports described direct current bus to after the direct current that described rectification module exports is carried out DC voltage conversion;
Described controller judges the input voltage whether overvoltage of a described DC/DC umformer, it is, then described controller controls described voltage Unload module and is released by the output voltage of described rectification module process, no, then described controller controls described voltage Unload module and cuts out;
The direct current that described photovoltaic cell is exported by described 2nd DC/DC umformer exports described direct current bus to after carrying out DC voltage conversion;
The direct current that described fuel cell is exported by described 3rd DC/DC umformer exports described direct current bus to after carrying out DC voltage conversion;
After air-conditioning is started shooting, according to the input voltage of a described DC/DC umformer, described controller judges whether described aerogenerator exports electric energy, simultaneously input voltage according to described 2nd DC/DC umformer judges whether described photovoltaic cell exports electric energy, if described aerogenerator and/or described photovoltaic cell export electric energy, then according to the power input of the power input of a described DC/DC umformer and described 2nd DC/DC umformer, described controller judges whether the gross output of described aerogenerator and described photovoltaic cell reaches the specified output power of air-conditioning, if, then described controller control air-conditioning system works in described aerogenerator and described photovoltaic cell works in coordination with the operating mode of power supply, if not, then described controller judges whether there is city's electricity access according to the input voltage of described two-way AC/DC umformer, Bing You city electricity access control air-conditioning system works in described aerogenerator and the operating mode of described photovoltaic cell and the collaborative power supply of city's electricity, the operating mode that power supply worked in coordination with by described aerogenerator and described photovoltaic cell and described fuel cell is being worked in without city's electricity access control air-conditioning system, if described aerogenerator and described photovoltaic cell all do not export electric energy, then described controller judges whether there is city's electricity access according to the input voltage of described two-way AC/DC umformer, if, then described controller control air-conditioning system works in the operating mode of mains-supplied, if not, then described controller control air-conditioning system works in described fuel cell-powered operating mode,
When air-conditioning is not started shooting, according to the input voltage of a described DC/DC umformer, described controller judges whether described aerogenerator exports electric energy, simultaneously input voltage according to described 2nd DC/DC umformer judges whether described photovoltaic cell exports electric energy, if described aerogenerator and/or described photovoltaic cell export electric energy, then described controller control air-conditioning system works in described aerogenerator and/or electrical network is carried out the operating mode of grid-connected electric energy conveying by described photovoltaic cell by described two-way AC/DC umformer, if described aerogenerator and described photovoltaic cell all do not export electric energy, then described conditioner continues to judge whether described aerogenerator and described photovoltaic cell export electric energy.
Present invention also offers a kind of control method of above-mentioned new energy variable-frequency air conditioner, described control method comprises the following steps:
A. controller judges whether air-conditioning starts shooting, and is, then perform step B, no, then perform step K;
B. according to the input voltage of the input voltage of a DC/DC umformer and the 2nd DC/DC umformer, described controller judges whether aerogenerator and/or photovoltaic cell export electric energy, is, then perform step C, no, then perform step H;
C. according to the power input of the power input of a described DC/DC umformer and described 2nd DC/DC umformer, described controller judges whether the gross output of described aerogenerator and described photovoltaic cell reaches the specified output power of air-conditioning, it is, then perform step D, no, then perform step e;
D. described controller control air-conditioning system works in described aerogenerator and described photovoltaic cell works in coordination with the operating mode of power supply;
E. described controller judges whether there is city's electricity access according to the input voltage of two-way AC/DC umformer, is then perform step F, no, then perform step G;
F. described controller control air-conditioning system works in described aerogenerator and the operating mode of described photovoltaic cell and the collaborative power supply of city's electricity;
G. described controller control air-conditioning system works in the operating mode that power supply worked in coordination with by described aerogenerator and described photovoltaic cell and described fuel cell;
H. described controller judges whether there is city's electricity access according to the input voltage of described two-way AC/DC umformer, is then perform step I, no, then perform step J;
I. described controller control air-conditioning system works in the operating mode of mains-supplied;
J. described controller control air-conditioning system works in described fuel cell-powered operating mode;
K. according to the input voltage of the input voltage of a described DC/DC umformer and described 2nd DC/DC umformer, described controller judges whether described aerogenerator and/or described photovoltaic cell export electric energy, it is, then perform step L, no, then return and continue to perform step K;
L. described controller control air-conditioning system works in described aerogenerator and/or electrical network is carried out the operating mode of grid-connected electric energy conveying by described photovoltaic cell by described two-way AC/DC umformer.
The present invention by adopting aerogenerator in new energy variable-frequency air conditioner, rectification module, voltage Unload module, one DC/DC umformer, photovoltaic cell, 2nd DC/DC umformer, fuel cell, 3rd DC/DC umformer, two-way AC/DC umformer and ultracapacitor, achieve wind energy, sun power, fuel cell and city's electricity carry out coordinating fully to utilize to be powered by convertible frequency air-conditioner, and electric energy aerogenerator and/or photovoltaic cell exported when air-conditioning is not started shooting implements to generate electricity by way of merging two or more grid systems to reach the object making full use of wind energy and/or sun power to electrical network, substitute existing alminium electrolytic condenser by ultracapacitor simultaneously and to extend the work-ing life of convertible frequency air-conditioner and improve the serviceability of convertible frequency air-conditioner.
Accompanying drawing explanation
Fig. 1 is the structure iron of the new energy variable-frequency air conditioner that the embodiment of the present invention provides;
Fig. 2 is the flowchart of the control method of the new energy variable-frequency air conditioner that the embodiment of the present invention provides;
Fig. 3 is the exemplary circuit structure iron of the voltage Unload module in the new energy variable-frequency air conditioner of embodiment of the present invention offer;
Fig. 4 is the exemplary circuit structure iron of the DC/DC umformer in the new energy variable-frequency air conditioner of embodiment of the present invention offer, the 2nd DC/DC umformer and the 3rd DC/DC umformer;
Fig. 5 is the exemplary circuit structure iron of the two-way AC/DC umformer in the new energy variable-frequency air conditioner of embodiment of the present invention offer;
Fig. 6 is the exemplary circuit structure iron of the two-way AC/DC umformer in the new energy variable-frequency air conditioner of another embodiment of the present invention offer.
Embodiment
In order to make the object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
Fig. 1 shows the structure of the new energy variable-frequency air conditioner that the embodiment of the present invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, describes in detail as follows:
New energy variable-frequency air conditioner comprises indoor machine 101, controller 102, first invertor 103, the 2nd invertor 104, compressor 105 and blower fan 106, in controller 102 watch-keeping cubicle, machine 101 works, and controller 102 also controls the first invertor 103 and the 2nd invertor 104 drives compressor 105 and blower fan 106 respectively; Controller 102 is conventional air-conditioner controller.
New energy variable-frequency air conditioner also comprises aerogenerator 107, rectification module 108, voltage Unload module 109, a DC/DC umformer 110, photovoltaic cell 111, the 2nd DC/DC umformer 112, fuel cell 113, the 3rd DC/DC umformer 114, two-way AC/DC umformer 115 and ultracapacitor 116.
The exchange output plus terminal of aerogenerator 107 exports, with exchanging, the input that negative terminal connects rectification module 108 respectively and is just holding and inputting negative terminal, the input that the output terminal of rectification module 108 and ground end connect a DC/DC umformer 110 respectively is just being held and is inputting negative terminal, the input terminus of voltage Unload module 109 and output terminal connect output terminal and the ground end of rectification module 108 respectively, the input that the output terminal of photovoltaic cell 111 and ground end connect the 2nd DC/DC umformer 112 respectively is just being held and is inputting negative terminal, the input that the output terminal of fuel cell 113 and ground end connect the 3rd DC/DC umformer 114 respectively is just being held and is inputting negative terminal, the electrical network coupling end access city electricity of two-way AC/DC umformer 115, the bus of two-way AC/DC umformer 115 is just holding the positive pole VBUS+ and negative pole VBUS-that connect direct current bus L with bus negative terminal respectively, the positive pole of ultracapacitor 116 and negative pole connect the positive pole VBUS+ and negative pole VBUS-of direct current bus L respectively, the output plus terminal of the one DC/DC umformer 110, the output plus terminal of the 2nd DC/DC umformer 112 and the output plus terminal of the 3rd DC/DC umformer 114 are connected to the positive pole VBUS+ of direct current bus L altogether, the output negative terminal of the one DC/DC umformer 110, the output negative terminal of the 2nd DC/DC umformer 112 and the output negative terminal of the 3rd DC/DC umformer 114 are connected to the negative pole VBUS-of direct current bus L altogether, the input of the first invertor 103 is just holding the input with the 2nd invertor 104 just holding the positive pole VBUS+ being connected to direct current bus L altogether, the input negative terminal of the first invertor 103 and the input negative terminal of the 2nd invertor 104 are connected to the negative pole VBUS-of direct current bus L altogether, voltage Unload module 109, one DC/DC umformer 110,2nd DC/DC umformer 112,3rd DC/DC umformer 114 and two-way AC/DC umformer 115 also connection control device 102.
The alternating-current that aerogenerator 107 is exported by rectification module 108 exports direct current after carrying out rectification process.
The direct current that rectification module 108 is exported by the one DC/DC umformer 110 exports direct current bus L to after carrying out DC voltage conversion.
Controller 102 judges the input voltage whether overvoltage of a DC/DC umformer 110, is, then the output voltage of rectification module 108 is released process by controller 102 control voltage Unload module 109, and no, then controller 102 control voltage Unload module 109 is closed.
The direct current that photovoltaic cell 111 is exported by the 2nd DC/DC umformer 112 exports direct current bus L to after carrying out DC voltage conversion.
The direct current that fuel cell 113 is exported by the 3rd DC/DC umformer 114 exports direct current bus L to after carrying out DC voltage conversion.
After air-conditioning is started shooting, according to the input voltage of a DC/DC umformer 110, controller 102 judges whether aerogenerator 107 exports electric energy, simultaneously input voltage according to the 2nd DC/DC umformer 112 judges whether photovoltaic cell 111 exports electric energy, if aerogenerator 107 and/or photovoltaic cell 111 export electric energy, then according to the power input of the power input of a DC/DC umformer 110 and the 2nd DC/DC umformer 112, controller 102 judges aerogenerator 107 is with whether the gross output of photovoltaic cell 111 reaches the specified output power of air-conditioning, if, then controller 102 controls air-conditioning system and works in aerogenerator 107 operating mode with the collaborative power supply of photovoltaic cell 111, if not, then controller 102 judges whether there is city's electricity access according to the input voltage of two-way AC/DC umformer 115, Bing You city electricity access control air-conditioning system works in aerogenerator 107 and the operating mode of photovoltaic cell 111 and the collaborative power supply of city's electricity, aerogenerator 107 and the operating mode of photovoltaic cell 111 and the collaborative power supply of fuel cell 113 is being worked in without city's electricity access control air-conditioning system, if aerogenerator 107 and photovoltaic cell 111 all do not export electric energy, then controller 102 judges whether there is city's electricity access according to the input voltage of two-way AC/DC umformer 115, if, then controller 102 controls the operating mode that air-conditioning system works in mains-supplied, if not, then controller 102 controls the operating mode that air-conditioning system works in fuel cell 113 power supply.
When air-conditioning is not started shooting, according to the input voltage of a DC/DC umformer 110, controller 102 judges whether aerogenerator 107 exports electric energy, simultaneously input voltage according to the 2nd DC/DC umformer 112 judges whether photovoltaic cell 111 exports electric energy, if aerogenerator 107 and/or photovoltaic cell 111 export electric energy, then controller 102 controls air-conditioning system and works in aerogenerator 107 and/or electrical network is carried out the operating mode of grid-connected electric energy conveying by photovoltaic cell 111 by two-way AC/DC umformer 115, if aerogenerator 107 and photovoltaic cell 111 all do not export electric energy, then conditioner 102 continues to judge whether aerogenerator 107 and photovoltaic cell 111 export electric energy.
For above-mentioned new energy variable-frequency air conditioner, its control method as shown in Figure 2, specifically comprises the following steps:
S1. controller 102 judges whether air-conditioning starts shooting, and is, then perform step S2, no, then perform step S11.
S2. according to the input voltage of the input voltage of a DC/DC umformer 110 and the 2nd DC/DC umformer 112, controller 102 judges whether aerogenerator 107 and/or photovoltaic cell 111 export electric energy, is, then perform step S3, no, then perform step S8.
S3. according to the power input of the power input of a DC/DC umformer 110 and the 2nd DC/DC umformer 112, controller 102 judges aerogenerator 107 is with whether the gross output of photovoltaic cell 111 reaches the specified output power of air-conditioning, it is, then perform step S4, no, then perform step S5.
S4. controller 102 controls air-conditioning system and works in aerogenerator 107 operating mode with the collaborative power supply of photovoltaic cell 111. Wherein, aerogenerator 107 and photovoltaic cell 111 are also carried out peak power point follow-up control by controller 102 respectively.
S5. controller 102 judges whether there is city's electricity access according to the input voltage of two-way AC/DC umformer 115, is then perform step S6, no, then perform step S7.
S6. controller 102 controls the operating mode that air-conditioning system works in the electric collaborative power supply of aerogenerator 107 and photovoltaic cell 111 and city. Wherein, preferentially air-conditioning system being powered by aerogenerator 107 and photovoltaic cell 111, the part of underproof is provided by city's electricity, and aerogenerator 107 and photovoltaic cell 111 are also carried out peak power point follow-up control by controller 102 respectively.
S7. controller 102 controls air-conditioning system and works in aerogenerator 107 and the operating mode of photovoltaic cell 111 and the collaborative power supply of fuel cell 113. Wherein, preferentially air-conditioning system being powered by aerogenerator 107 and photovoltaic cell 111, the part of underproof is provided by fuel cell 113, and aerogenerator 107 and photovoltaic cell 111 are also carried out peak power point follow-up control by controller 102 respectively.
S8. controller 102 judges whether there is city's electricity access according to the input voltage of two-way AC/DC umformer 115, is then perform step S9, no, then perform step S10.
S9. controller 102 controls the operating mode that air-conditioning system works in mains-supplied.
S10. controller 102 controls the operating mode that air-conditioning system works in fuel cell 113 and powers.
S11. according to the input voltage of the input voltage of a DC/DC umformer 110 and the 2nd DC/DC umformer 112, controller 102 judges whether aerogenerator 107 and/or photovoltaic cell 111 export electric energy, it is, then perform step S12, no, then return and continue to perform step S11.
S12. controller 102 controls air-conditioning system and works in aerogenerator 107 and/or electrical network is carried out the operating mode of grid-connected electric energy conveying by photovoltaic cell 111 by two-way AC/DC umformer 115. Wherein, aerogenerator 107 and/or photovoltaic cell 111 are also carried out peak power point follow-up control by controller 102.
From foregoing, the new energy variable-frequency air conditioner that the embodiment of the present invention provides can not started shooting at air-conditioning, and there is electric energy when exporting in aerogenerator 107 and/or photovoltaic cell 111, by aerogenerator 107 and/or photovoltaic cell 111, electric energy is transferred to two-way AC/DC umformer 115 by direct current bus L, export electrical network to by two-way AC/DC umformer 115 again, thus realize making full use of wind energy and/or sun power.
Further, rectification module 108 is conventional rectifier circuit, its for the output alternating-current of aerogenerator 107 is carried out rectification process after export direct current to a DC/DC umformer 110.
Further, as shown in Figure 3, voltage Unload module 109 comprises resistance R1, driving circuit 1091 and MOS field effect transistor VT1; The first end of resistance R1 is the input terminus of voltage Unload module 109,2nd end of resistance R1 connects the drain electrode of MOS field effect transistor VT1, the input terminus connection control device 102 of driving circuit 1091, the output terminal of driving circuit 1091 connects the grid of MOS field effect transistor VT1, and the source electrode of MOS field effect transistor VT1 is the output terminal of voltage Unload module 109. Wherein, driving circuit 1091 is conventional semi-conductor switch tube driving circuit, and it drives the break-make of MOS field effect transistor VT1 for the control signal sent according to controller 1091. When according to the input voltage of a DC/DC umformer 110, controller 102 judges that the output voltage of rectification module 108 is too high, controller 102 can control MOS field effect transistor VT1 by driving circuit 1091 and carry out make-break operation according to the duty cycle of switching corresponding with control signal, releases with the laminate section of crossing to the output voltage of rectification module 108.
Further, a DC/DC umformer 110, the 2nd DC/DC umformer 112 and the 3rd DC/DC umformer 114 are the DC/DC umformer that structure is identical, and as shown in Figure 4, this DC/DC umformer comprises:
One MOS field effect transistor M1, the 2nd MOS field effect transistor M2, transformer T1, the first diode D1, the 2nd diode D2 and the first inductance L 1;
The input that the public end of the armature winding of transformer T1 is DC/DC umformer is just held, and be connected with controller 102, the first end of transformer T1 and the 2nd end connect the drain electrode of a MOS field effect transistor M1 and the drain electrode of the 2nd MOS field effect transistor M2 respectively, the grid of the one MOS field effect transistor M1 and the grid connection control device 102 of the 2nd MOS field effect transistor M2, the source electrode of the one MOS field effect transistor M1 is the input negative terminal of DC/DC umformer with the common contact of the source electrode of the 2nd MOS field effect transistor M2 and is connected with controller 102, the first end of the secondary winding of transformer T1 and the 2nd end connect the anode of the first diode D1 and the anode of the 2nd diode D2 respectively, the negative electrode of the first diode D1 and the negative electrode of the 2nd diode D2 are connected to the first end of the first inductance L 1 altogether, the public end of the 2nd end of the first inductance L 1 and the secondary winding of transformer T1 is respectively the output plus terminal of DC/DC umformer and exports negative terminal, and be connected with controller 102.
Further, as shown in Figure 5, two-way AC/DC umformer 115 comprises:
First relay K 1, first electric capacity C1, the 2nd inductance L 2, the 3rd inductance L 3, an IGBT pipe Q1, the 2nd IGBT pipe Q2, the 3rd IGBT pipe Q3 and the 4th IGBT pipe Q4;
The first end of the 2nd inductance L 2 and the first end of the 3rd inductance L 3 form the electrical network coupling end of two-way AC/DC umformer 115 jointly, first control contact 1 of the first relay K 1 and the 2nd control contact 2 connection control device 102, the switch contact 3 of the first relay K 1 and normally opened contact 4 connect the first end of the 2nd inductance L 2 and the first end of the first electric capacity C1 respectively, 2nd end of the first electric capacity C1 connects the first end of the 3rd inductance L 3, the bus that the common contact of the collector electrode of the one IGBT pipe Q1 and the collector electrode of the 3rd IGBT pipe Q3 is two-way AC/DC umformer 115 is just held, the emtting electrode of the one IGBT pipe Q1 and the collector electrode of the 2nd IGBT pipe Q2 are connected to the 2nd end of the 2nd inductance L 2 altogether, the common contact of the emtting electrode of the 2nd IGBT pipe Q2 and the emtting electrode of the 4th IGBT pipe Q4 is the bus negative terminal of two-way AC/DC umformer 115, the emtting electrode of the 3rd IGBT pipe Q3 and the collector electrode of the 4th IGBT pipe Q4 are connected to the 2nd end of the 3rd inductance L 3 altogether, the base stage of the one IGBT pipe Q1, the base stage of the 2nd IGBT pipe Q2, the base stage of the 3rd IGBT pipe Q3 and the equal connection control device 102 of base stage of the 4th IGBT pipe Q4.
For the two-way AC/DC umformer 115 shown in Fig. 5, in fact it is single phase bidirectional AC/DC umformer, and the positive half cycle of the single phase alternating current that electrical network provides and negative half cycle input to the 2nd inductance L 2 and the 3rd inductance L 3 respectively.
When controller 102 controls the operating mode that air-conditioning system works in mains-supplied, controller 102 controls the first relay K 1 and disconnects, now controller 102 controls two-way AC/DC umformer 115 and works in active power factor correction work state, 2nd inductance L 2, the body diode of the one IGBT pipe Q1 and the body diode of the 2nd IGBT pipe Q2 constitute first via BOOST type active power factor correcting circuit, 3rd inductance L 3, the body diode of the 3rd IGBT pipe Q3 and the body diode of the 4th IGBT pipe Q4 constitute the 2nd road BOOST type active power factor correcting circuit, above-mentioned two-way active power factor correcting circuit defines staggered formula active power factor correcting circuit, preferably, this staggered formula active power factor correcting circuit works in synchronous rectification mode.
And controller 102 control air-conditioning system work in the operating mode that electrical network is carried out grid-connected electric energy conveying by aerogenerator 107 and/or photovoltaic cell 111 by two-way AC/DC umformer 115 time, controller 102 controls the first relay K 1 and closes, then two-way AC/DC umformer 115 works in combining inverter working order, and by the 2nd inductance L 2, the LCL output filter circuit that first electric capacity C1 and the 3rd inductance L 3 are formed is to an IGBT pipe Q1, 2nd IGBT pipe Q2, 3rd IGBT pipe Q3 and the 4th IGBT pipe Q4 works in inverter mode and is produced to export electrical network to after single phase alternating current carries out filtering, thus realize making full use of to wind energy and/or sun power.
In addition, in an alternative embodiment of the invention, as shown in Figure 6, two-way AC/DC umformer 115 comprises:
2nd relay K 2, the 3rd relay K 3, the 4th relay K 4, the 2nd electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 4th inductance L 4, the 5th inductance L 5, the 6th inductance L 6, the 5th IGBT pipe Q5, the 6th IGBT pipe Q6, the 7th IGBT pipe Q7, the 8th IGBT pipe Q8, the 9th IGBT pipe Q9 and the tenth IGBT pipe Q10;
2nd end of the 2nd electric capacity C2, the common contact of the 2nd end of the 3rd electric capacity C3 and the 2nd end of the 4th electric capacity C4, the first end of the 4th inductance L 4, the first end of the 5th inductance L 5 and the first end of the 6th inductance L 6 form the electrical network coupling end of two-way AC/DC umformer 115 jointly, first control contact 1 of the 2nd relay K 2 and the 2nd control contact 2, first control contact 1 of the first control contact 1 of the 3rd relay K 3 and the 2nd control contact 2 and the 4th relay K 4 and the 2nd control contact 2 all connection control devices 102, the switch contact 3 of the 2nd relay K 2, the switch contact 3 of the 3rd relay K 3 and the switch contact 3 of the 4th relay K 4 connect the first end of the 4th inductance L 4 respectively, the first end of the 5th inductance L 5 and the first end of the 6th inductance L 6, the normally opened contact 4 of the 2nd relay K 2, the normally opened contact 4 of the 3rd relay K 3 and the normally opened contact 4 of the 4th relay K 4 connect the first end of the 2nd electric capacity C2 respectively, the first end of the 3rd electric capacity C3 and the first end of the 4th electric capacity C4, the emtting electrode of the 5th IGBT pipe Q5 and the collector electrode of the 6th IGBT pipe Q6 are connected to the 2nd end of the 4th inductance L 4 altogether, the emtting electrode of the 7th IGBT pipe Q7 and the collector electrode of the 8th IGBT pipe Q8 are connected to the 2nd end of the 5th inductance L 5 altogether, the emtting electrode of the 9th IGBT pipe Q9 and the collector electrode of the tenth IGBT pipe Q10 are connected to the 2nd end of the 6th inductance L 6 altogether, the bus that the common contact of the collector electrode of the collector electrode of the 5th IGBT pipe Q5 and the collector electrode of the 7th IGBT pipe Q7 and the 9th IGBT pipe Q9 is two-way AC/DC umformer 115 is just held, the common contact of the emtting electrode of the emtting electrode of the 6th IGBT pipe Q6 and the emtting electrode of the 8th IGBT pipe Q8 and the tenth IGBT pipe Q10 is the bus negative terminal of two-way AC/DC umformer 115, the base stage of the 5th IGBT pipe Q5, the base stage of the 6th IGBT pipe Q6, the base stage of the 7th IGBT pipe Q7, the base stage of the 8th IGBT pipe Q8, the base stage of the 9th IGBT pipe Q9 and the base stage of the tenth IGBT pipe Q10 are all connected with controller 102.
For the two-way AC/DC umformer 115 shown in Fig. 5, in fact it is the two-way AC/DC umformer of three-phase, and A phase electricity Ua, B phase electricity Ub and C phase electricity Uc of the three-phase mains that electrical network provides inputs to the 4th inductance L 4, the 5th inductance L 5 and the 6th inductance L 6 respectively.
When controller 102 controls the operating mode that air-conditioning system works in mains-supplied, controller 102 controls the 2nd relay K 2, the 3rd relay K 3 and the 4th relay K 4 and all disconnects, two-way AC/DC umformer 115 constitutes three-phase active power factor correcting circuit, and now controller 102 controls two-way AC/DC umformer 115 and works in three-phase active power factor correction work state. The body diode of the 4th inductance L 4, the 5th IGBT pipe Q5 and the body diode of the 6th IGBT pipe Q6 constitute A phase BOOST type active power factor correcting circuit, the body diode of the 5th inductance L 5, the 7th IGBT pipe Q7 and the body diode of the 8th IGBT pipe Q8 constitute B phase BOOST type active power factor correcting circuit, the body diode of the 6th inductance L 6, the 9th IGBT pipe Q9 and the body diode of the tenth IGBT pipe Q10 constitute C phase BOOST type active power factor correcting circuit, preferably, the active power factor correcting circuit of above-mentioned three-phase works in synchronous rectification mode.
And controller 102 control air-conditioning system work in the operating mode that electrical network is carried out grid-connected electric energy conveying by aerogenerator 107 and/or photovoltaic cell 111 by two-way AC/DC umformer 115 time, controller 102 controls the 2nd relay K 2, 3rd relay K 3 and the 4th relay K 4 are all closed, two-way AC/DC umformer 115 works in combining inverter working order, 4th inductance L 4 forms A phase LC output filter circuit with the 2nd electric capacity C2, 5th inductance L 5 forms B phase LC output filter circuit with the 3rd electric capacity C3, 6th inductance L 6 forms C phase LC output filter circuit with the 4th electric capacity C4, this three-phase LC output filter circuit is respectively to the 5th IGBT pipe Q5, 6th IGBT pipe Q6, 7th IGBT pipe Q7, 8th IGBT pipe Q8, it is electric that 9th IGBT pipe Q9 and the tenth IGBT pipe Q10 works in the A phase that inverter mode produces, B phase electricity and C phase electricity export electrical network to after carrying out filtering, thus realize making full use of to wind energy and/or sun power.
The embodiment of the present invention by adopting aerogenerator 107 in new energy variable-frequency air conditioner, rectification module 108, voltage Unload module 109, one DC/DC umformer 110, photovoltaic cell 111, 2nd DC/DC umformer 112, fuel cell 113, 3rd DC/DC umformer 114, two-way AC/DC umformer 115 and ultracapacitor 116, achieve wind energy, sun power, fuel cell and city's electricity carry out coordinating fully to utilize to be powered by convertible frequency air-conditioner, and electric energy aerogenerator 107 and/or photovoltaic cell 108 exported when air-conditioning is not started shooting implements to generate electricity by way of merging two or more grid systems to reach the object making full use of wind energy and/or sun power to electrical network, in addition, owing to ultracapacitor 116 has power density height, the discharge and recharge time is short, have extended cycle life and the advantage such as operating temperature range width, the work-ing life of convertible frequency air-conditioner can be extended so substituting existing alminium electrolytic condenser by ultracapacitor 116 and improve the serviceability of convertible frequency air-conditioner.
The foregoing is only the better embodiment of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. done within the spirit and principles in the present invention, all should be included within protection scope of the present invention.

Claims (6)

1. a new energy variable-frequency air conditioner, comprise aerogenerator, indoor machine, controller, the first invertor, the 2nd invertor, compressor and blower fan, the described indoor machine work of described controller control, and described controller also controls described first invertor and described 2nd invertor drives described compressor and described blower fan respectively; It is characterized in that:
Described new energy variable-frequency air conditioner also comprises:
Rectification module, voltage Unload module, a DC/DC umformer, photovoltaic cell, the 2nd DC/DC umformer, fuel cell, the 3rd DC/DC umformer, two-way AC/DC umformer and ultracapacitor;
The exchange output plus terminal of described aerogenerator exports, with exchanging, the input that negative terminal connects described rectification module respectively and is just holding and inputting negative terminal, the input that the output terminal of described rectification module and ground end connect a described DC/DC umformer respectively is just being held and is inputting negative terminal, the input terminus of described voltage Unload module and output terminal connect output terminal and the ground end of described rectification module respectively, the input that the output terminal of described photovoltaic cell and ground end connect described 2nd DC/DC umformer respectively is just being held and is inputting negative terminal, the input that the output terminal of described fuel cell and ground end connect described 3rd DC/DC umformer respectively is just being held and is inputting negative terminal, the electrical network coupling end access city electricity of described two-way AC/DC umformer, the bus of described two-way AC/DC umformer is just holding the positive pole and the negative pole that connect direct current bus with bus negative terminal respectively, the positive pole of described ultracapacitor and negative pole connect positive pole and the negative pole of described direct current bus respectively, the output plus terminal of a described DC/DC umformer, the output plus terminal of described 2nd DC/DC umformer and the output plus terminal of described 3rd DC/DC umformer are connected to the positive pole of described direct current bus altogether, the output negative terminal of a described DC/DC umformer, the output negative terminal of described 2nd DC/DC umformer and the output negative terminal of described 3rd DC/DC umformer are connected to the negative pole of described direct current bus altogether, the input of described first invertor is just holding the input with described 2nd invertor just holding the positive pole being connected to described direct current bus altogether, the input negative terminal of described first invertor and the input negative terminal of described 2nd invertor are connected to the negative pole of described direct current bus altogether, described voltage Unload module, a described DC/DC umformer, described 2nd DC/DC umformer, described 3rd DC/DC umformer and described two-way AC/DC umformer also connect described controller,
The alternating-current that described aerogenerator is exported by described rectification module exports direct current after carrying out rectification process;
A described DC/DC umformer exports described direct current bus to after the direct current that described rectification module exports is carried out DC voltage conversion;
Described controller judges the input voltage whether overvoltage of a described DC/DC umformer, it is, then described controller controls described voltage Unload module and is released by the output voltage of described rectification module process, no, then described controller controls described voltage Unload module and cuts out;
The direct current that described photovoltaic cell is exported by described 2nd DC/DC umformer exports described direct current bus to after carrying out DC voltage conversion;
The direct current that described fuel cell is exported by described 3rd DC/DC umformer exports described direct current bus to after carrying out DC voltage conversion;
After air-conditioning is started shooting, according to the input voltage of a described DC/DC umformer, described controller judges whether described aerogenerator exports electric energy, simultaneously input voltage according to described 2nd DC/DC umformer judges whether described photovoltaic cell exports electric energy, if described aerogenerator and/or described photovoltaic cell export electric energy, then according to the power input of the power input of a described DC/DC umformer and described 2nd DC/DC umformer, described controller judges whether the gross output of described aerogenerator and described photovoltaic cell reaches the specified output power of air-conditioning, if, then described controller control air-conditioning system works in described aerogenerator and described photovoltaic cell works in coordination with the operating mode of power supply, if not, then described controller judges whether there is city's electricity access according to the input voltage of described two-way AC/DC umformer, Bing You city electricity access control air-conditioning system works in described aerogenerator and the operating mode of described photovoltaic cell and the collaborative power supply of city's electricity, the operating mode that power supply worked in coordination with by described aerogenerator and described photovoltaic cell and described fuel cell is being worked in without city's electricity access control air-conditioning system, if described aerogenerator and described photovoltaic cell all do not export electric energy, then described controller judges whether there is city's electricity access according to the input voltage of described two-way AC/DC umformer, if, then described controller control air-conditioning system works in the operating mode of mains-supplied, if not, then described controller control air-conditioning system works in described fuel cell-powered operating mode,
When air-conditioning is not started shooting, according to the input voltage of a described DC/DC umformer, described controller judges whether described aerogenerator exports electric energy, simultaneously input voltage according to described 2nd DC/DC umformer judges whether described photovoltaic cell exports electric energy, if described aerogenerator and/or described photovoltaic cell export electric energy, then described controller control air-conditioning system works in described aerogenerator and/or electrical network is carried out the operating mode of grid-connected electric energy conveying by described photovoltaic cell by described two-way AC/DC umformer, if described aerogenerator and described photovoltaic cell all do not export electric energy, then described conditioner continues to judge whether described aerogenerator and described photovoltaic cell export electric energy.
2. new energy variable-frequency air conditioner as claimed in claim 1, it is characterised in that, described voltage Unload module comprises resistance R1, driving circuit and MOS field effect transistor; The first end of described resistance R1 is the input terminus of described voltage Unload module, 2nd end of described resistance R1 connects the drain electrode of described MOS field effect transistor, the input terminus of described driving circuit connects described controller, the output terminal of described driving circuit connects the grid of described MOS field effect transistor, and the source electrode of described MOS field effect transistor is the output terminal of described voltage Unload module.
3. new energy variable-frequency air conditioner as claimed in claim 1, it is characterised in that, a described DC/DC umformer, described 2nd DC/DC umformer and described 3rd DC/DC umformer are the DC/DC umformer that structure is identical, and described DC/DC umformer comprises:
One MOS field effect transistor, the 2nd MOS field effect transistor, transformer, the first diode D1, the 2nd diode D2 and the first inductance L 1;
The input that the public end of the armature winding of described transformer is described DC/DC umformer is just held, and be connected with described controller, the first end of described transformer and the 2nd end connect the drain electrode of a described MOS field effect transistor and the drain electrode of described 2nd MOS field effect transistor respectively, the grid of a described MOS field effect transistor and the grid of described 2nd MOS field effect transistor connect described controller, the common contact of the source electrode of a described MOS field effect transistor and the source electrode of described 2nd MOS field effect transistor is the input negative terminal of described DC/DC umformer, and be connected with described controller, the first end of the secondary winding of described transformer and the 2nd end connect the anode of described first diode D1 and the anode of described 2nd diode D2 respectively, the negative electrode of described first diode D1 and the negative electrode of described 2nd diode D2 are connected to the first end of described first inductance L 1 altogether, the public end of the 2nd end of described first inductance L 1 and the secondary winding of described transformer is respectively the output plus terminal of described DC/DC umformer and exports negative terminal, and be connected with described controller.
4. new energy variable-frequency air conditioner as claimed in claim 1, it is characterised in that, described two-way AC/DC umformer comprises:
First rly., the first electric capacity C1, the 2nd inductance L 2, the 3rd inductance L 3, an IGBT pipe, the 2nd IGBT pipe, the 3rd IGBT pipe and the 4th IGBT manage;
The first end of described 2nd inductance L 2 and the first end of described 3rd inductance L 3 form the electrical network coupling end of described two-way AC/DC umformer jointly, first control contact and the 2nd control contact of described first rly. connect described controller, the switch contact of described first rly. and normally opened contact connect the first end of described 2nd inductance L 2 and the first end of described first electric capacity C1 respectively, 2nd end of described first electric capacity C1 connects the first end of described 3rd inductance L 3, the bus that the common contact of the collector electrode of a described IGBT pipe and the collector electrode of described 3rd IGBT pipe is described two-way AC/DC umformer is just held, the emtting electrode of a described IGBT pipe and the collector electrode of described 2nd IGBT pipe are connected to the 2nd end of described 2nd inductance L 2 altogether, the common contact of the emtting electrode of described 2nd IGBT pipe and the emtting electrode of described 4th IGBT pipe is the bus negative terminal of described two-way AC/DC umformer, the emtting electrode of described 3rd IGBT pipe and the collector electrode of described 4th IGBT pipe are connected to the 2nd end of described 3rd inductance L 3 altogether, the base stage of a described IGBT pipe, the base stage of described 2nd IGBT pipe, the base stage of described 3rd IGBT pipe and the base stage of described 4th IGBT pipe all connect described controller.
5. new energy variable-frequency air conditioner as claimed in claim 1, it is characterised in that, described two-way AC/DC umformer comprises:
2nd rly., the 3rd rly., the 4th rly., the 2nd electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 4th inductance L 4, the 5th inductance L 5, the 6th inductance L 6, the 5th IGBT pipe, the 6th IGBT pipe, the 7th IGBT pipe, the 8th IGBT pipe, the 9th IGBT pipe and the tenth IGBT manage;
2nd end of described 2nd electric capacity C2, the common contact of the 2nd end of described 3rd electric capacity C3 and the 2nd end of described 4th electric capacity C4, the first end of described 4th inductance L 4, the first end of described 5th inductance L 5 and the first end of described 6th inductance L 6 form the electrical network coupling end of described two-way AC/DC umformer jointly, first control contact of described 2nd rly. and the 2nd control contact, first control contact of described 3rd rly. is all connected described controller with the first control contact of the 2nd control contact and described 4th rly. with the 2nd control contact, the switch contact of described 2nd rly., the switch contact of described 3rd rly. and the switch contact of described 4th rly. connect the first end of described 4th inductance L 4 respectively, the first end of described 5th inductance L 5 and the first end of described 6th inductance L 6, the normally opened contact of described 2nd relay K 2, the normally opened contact of described 3rd rly. and the normally opened contact of described 4th rly. connect the first end of described 2nd electric capacity C2 respectively, the first end of described 3rd electric capacity C3 and the first end of described 4th electric capacity C4, the emtting electrode of described 5th IGBT pipe and the collector electrode of described 6th IGBT pipe are connected to the 2nd end of described 4th inductance L 4 altogether, the emtting electrode of described 7th IGBT pipe and the collector electrode of described 8th IGBT pipe are connected to the 2nd end of described 5th inductance L 5 altogether, the emtting electrode of described 9th IGBT pipe and the collector electrode of described tenth IGBT pipe are connected to the 2nd end of described 6th inductance L 6 altogether, the bus that the common contact of the collector electrode of the collector electrode of described 5th IGBT pipe and the collector electrode of described 7th IGBT pipe and described 9th IGBT pipe is described two-way AC/DC umformer is just held, the common contact of the emtting electrode of the emtting electrode of described 6th IGBT pipe and the emtting electrode of described 8th IGBT pipe and described tenth IGBT pipe is the bus negative terminal of described two-way AC/DC umformer, the base stage of described 5th IGBT pipe, the base stage of described 6th IGBT pipe, the base stage of described 7th IGBT pipe, the base stage of described 8th IGBT pipe, the base stage of described 9th IGBT pipe and the base stage of described tenth IGBT pipe are all connected with described controller.
6. the control method of a new energy variable-frequency air conditioner as claimed in claim 1, it is characterised in that, described control method comprises the following steps:
A. controller judges whether air-conditioning starts shooting, and is, then perform step B, no, then perform step K;
B. according to the input voltage of the input voltage of a DC/DC umformer and the 2nd DC/DC umformer, described controller judges whether aerogenerator and/or photovoltaic cell export electric energy, is, then perform step C, no, then perform step H;
C. according to the power input of the power input of a described DC/DC umformer and described 2nd DC/DC umformer, described controller judges whether the gross output of described aerogenerator and described photovoltaic cell reaches the specified output power of air-conditioning, it is, then perform step D, no, then perform step e;
D. described controller control air-conditioning system works in described aerogenerator and described photovoltaic cell works in coordination with the operating mode of power supply;
E. described controller judges whether there is city's electricity access according to the input voltage of two-way AC/DC umformer, is then perform step F, no, then perform step G;
F. described controller control air-conditioning system works in described aerogenerator and the operating mode of described photovoltaic cell and the collaborative power supply of city's electricity;
G. described controller control air-conditioning system works in the operating mode that power supply worked in coordination with by described aerogenerator and described photovoltaic cell and described fuel cell;
H. described controller judges whether there is city's electricity access according to the input voltage of described two-way AC/DC umformer, is then perform step I, no, then perform step J;
I. described controller control air-conditioning system works in the operating mode of mains-supplied;
J. described controller control air-conditioning system works in described fuel cell-powered operating mode;
K. according to the input voltage of the input voltage of a described DC/DC umformer and described 2nd DC/DC umformer, described controller judges whether described aerogenerator and/or described photovoltaic cell export electric energy, it is, then perform step L, no, then return and continue to perform step K;
L. described controller control air-conditioning system works in described aerogenerator and/or electrical network is carried out the operating mode of grid-connected electric energy conveying by described photovoltaic cell by described two-way AC/DC umformer.
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