CN104949246A - Solar energy variable-frequency air conditioner system - Google Patents
Solar energy variable-frequency air conditioner system Download PDFInfo
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- CN104949246A CN104949246A CN201510367050.8A CN201510367050A CN104949246A CN 104949246 A CN104949246 A CN 104949246A CN 201510367050 A CN201510367050 A CN 201510367050A CN 104949246 A CN104949246 A CN 104949246A
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- solar battery
- battery array
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- conditioner set
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a solar energy variable-frequency air conditioner system. The solar energy variable-frequency air conditioner system comprises a solar cell array group, an air conditioner frequency converter and a first direct current bus, wherein the solar cell array group comprises multiple solar cell arrays and multiple MPPT controllers; each MPPT controller is connected with one or more solar cell arrays; the MPPT controllers are connected with the air conditioner frequency converter through the first direct current bus and used for increasing and stabilizing voltage of direct current generated by the solar cell arrays, tracking and controlling the MPPT output of each solar cell array and restraining the PID effect of the solar cell arrays; the air conditioner frequency converter comprises a rectification and inversion grid connection module, an inversion power module and a second direct current bus; the rectification and inversion grid connection module is connected with the inversion power module through the second direct current bus; the first direct current bus and the second direct current bus are connected in parallel; accordingly, the MPPT function of the multiple paths of solar cell arrays and the function of restraining the PID effect can be achieved.
Description
Technical field
The present invention relates to power electronics and household electrical appliance technical field, more particularly, relate to a kind of solar energy frequency-conversion air-conditioning system.
Background technology
At present, solar energy becomes the optimal alternative energy source of conventional energy resource with the spatter property of the generality of the unlimitedness of its reserves, existence, utilization and economy.The highest form of expression that photovoltaic generation utilizes as solar energy resources, has the advantage not available for other generation modes.Along with the development of photovoltaic power generation technology, its advantage constantly shows in every profession and trade application, and wherein, photovoltaic air-conditioning, as a kind of application form of solar energy power generating, has boundless development prospect.
Existing a kind of solar energy frequency-conversion air-conditioning system, with reference to figure 1, comprising: solar battery array, power supply unit, DC (Direct Current, direct current)/DC voltage changing module, air conditioning frequency converter and air-conditioner set.When the electric energy that solar battery array produces is enough for air-conditioner set work, the low-voltage DC that solar battery array produces accesses in air conditioning frequency converter after power supply unit distribution and the boosting of DC/DC voltage changing module, through the inverted power module process rear drive air-conditioner set work that air conditioning frequency converter is built-in; When the electric energy that solar battery array produces is not enough to for air-conditioner set work, air-conditioner set is by the mains-supplied after the grid-connected resume module of commutation inversion.
But, this solar energy frequency-conversion air-conditioning system, solar battery array is directly connected with air conditioning frequency converter with DC/DC voltage changing module by power supply unit, MPPT ((the Maximum Power Point Tracking of multichannel solar battery array can not be realized, MPPT maximum power point tracking) function and suppress the function of PID (Potential Induced Degradation, potential induction attenuation) effect.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of solar energy frequency-conversion air-conditioning system, to solve the problem that existing solar energy frequency-conversion air-conditioning system can not realize the MPPT function of multichannel solar battery array and the function of suppression PID effect.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
A kind of solar energy frequency-conversion air-conditioning system, comprising: solar battery array group, air conditioning frequency converter and the first dc bus;
Described solar battery array group comprises multiple solar battery array and multiple MPPT controller, and MPPT controller described in each is all connected with solar battery array described in one or more; Described MPPT controller is connected with described air conditioning frequency converter by described first dc bus, exports for the MPPT promoted with stablize solar battery array described in galvanic voltage that described solar battery array produces, the every road of tracing control and suppresses the PID effect of described solar battery array;
Described air conditioning frequency converter comprises: the grid-connected module of commutation inversion, inverted power module and the second dc bus, the grid-connected module of described commutation inversion is connected with utility network, described inverted power module is connected with air-conditioner set, the grid-connected module of described commutation inversion is connected with described inverted power module by described second dc bus, and described first dc bus and described second dc bus are connected in parallel;
The grid-connected module of described commutation inversion is used for when the power that described solar battery array group provides is less than described air-conditioner set power demand, the AC conversion of described utility network is direct current and is delivered to described inverted power module, or when the power that described solar battery array group provides is greater than described air-conditioner set power demand, the unnecessary DC conversion that described solar battery array group provides is alternating current and is delivered to described utility network, or when described air-conditioner set is idle, the DC conversion that described solar battery array group provides is alternating current and is delivered to described utility network,
Described inverted power module is used for when the power that described solar battery array group provides is less than described air-conditioner set power demand, the DC conversion that the direct current provide described solar battery array group and the grid-connected module of described commutation inversion provide is alternating current, to drive described air-conditioner set work, or when the power that described solar battery array group provides is more than or equal to described air-conditioner set power demand, the DC conversion corresponding with described air-conditioner set power demand described solar battery array group provided is alternating current, to drive described air-conditioner set work.
Preferably, described MPPT controller comprises multiple unit module, the anti-PID unit that described unit module comprises boosting unit and is connected with described boosting unit;
Described boosting unit exports for the MPPT promoted with stablize solar battery array described in galvanic voltage and tracing control that described solar battery array produces, with the state making described solar battery array always work in maximum power output;
Described anti-PID unit for the formation of the DC voltage of preset range, and between the negative pole that described DC voltage is applied to described solar battery array and ground, to suppress the PID effect of described solar battery array.
Preferably, described unit module also comprises the electric arc isolated location, data acquisition unit and the input joining unit that is connected with described data acquisition unit that are connected with described boosting unit;
Described input joining unit is connected with described solar battery array, for receiving the direct current that described solar battery array produces; Described data acquisition unit is for gathering described galvanic voltage and current status signal; Described electric arc isolated location is connected with described first dc bus, disconnects for the connected sum controlling described MPPT controller and described first dc bus.
Preferably, described MPPT controller also comprises control unit and communication unit;
Described control unit is connected with anti-PID unit with described electric arc isolated location, boosting unit respectively, for controlling the break-make of described electric arc isolated location, control voltage and the power stage of described boosting unit, and control described PID unit and carry out PWM to form the DC voltage of preset range;
Described communication unit is connected with described control unit and anti-PID unit, for receiving the data of described control unit and the transmission of anti-PID unit, and described data is transferred to monitoring system.
Preferably, when the power of described control unit also for providing in described solar battery array group is greater than described air-conditioner set power demand, described in control section, solar battery array enters resting state, when the power that described solar battery array group provides is less than described air-conditioner set power demand, control section or whole described solar battery array enter duty.
Preferably, described solar energy frequency-conversion air-conditioning system also comprises line concentration unit;
Described line concentration unit is arranged between described MPPT controller and described first dc bus;
The direct current that described solar battery array produces, after described MPPT controller and described line concentration unit distribution, is delivered to described air conditioning frequency converter by described first dc bus.
Preferably, described solar energy frequency-conversion air-conditioning system also comprises on-load switch and energy-storage units, and described energy-storage units is in parallel with described first dc bus by described on-load switch;
Described energy-storage units is used for when the power that described solar battery array group provides is greater than described air-conditioner set power demand, store the unnecessary direct current that described solar battery array group provides, when the power that described solar battery array group provides is less than described air-conditioner set power demand, direct current is provided, to drive described air-conditioner set work to described air conditioning frequency converter.
Preferably, the mode of operation of described energy-storage units comprises energy storage pattern and discharge mode;
When the power of described control unit also for providing in described solar battery array group is greater than described air-conditioner set power demand, control described energy-storage units and be operated in energy storage pattern, to store the unnecessary direct current that described solar battery array group provides, when the power that described solar battery array group provides is less than described air-conditioner set power demand, control described energy-storage units and be operated in discharge mode, to provide direct current to described air conditioning frequency converter.
Preferably, the grid-connected module of described commutation inversion is the four quadrant convertor with rectification and inversion grid connection function.
Preferably, air conditioning frequency converter is two level converters or three-level converter.
Based on technique scheme, the solar energy frequency-conversion air-conditioning system that the embodiment of the present invention provides, solar battery array group comprises multiple solar battery array and multiple MPPT controller, this MPPT controller is connected with air conditioning frequency converter by the first dc bus, the direct current boosting that solar battery array is producing by this MPPT controller transfers on the basis of air conditioning frequency converter, the MPPT of tracing control every road solar battery array can also export and suppress the PID effect of solar battery array, because each MPPT controller is all directly connected with one or more solar battery array, therefore, the solar energy frequency-conversion air-conditioning system that the present embodiment provides can realize the MPPT function of multichannel solar battery array and suppress the function of PID effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of solar energy frequency-conversion air-conditioning system in prior art;
The structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 2 provides for the embodiment of the present invention one;
The structural representation of the MPPT controller that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 4 provides for the embodiment of the present invention two;
The structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 5 provides for the embodiment of the present invention three;
The structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 6 provides for the embodiment of the present invention four.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention one provides a kind of solar energy frequency-conversion air-conditioning system, with reference to figure 2, the structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 2 provides for the present embodiment, this solar energy frequency-conversion air-conditioning system can comprise: solar battery array group 10, air conditioning frequency converter 20 and the first dc bus 30, wherein, solar battery array group 10 comprises at least one solar battery array 100 and at least one MPPT controller 110, each MPPT controller 110 is all connected with one or more solar battery array 100, and multiple MPPT controller 110 is all connected with air conditioning frequency converter 20 by the first dc bus 30, the direct current that solar battery array 100 produces is after MPPT controller 110 promotes and be stable, air conditioning frequency converter 20 is delivered to by the first dc bus 30.
As shown in Figure 2, air conditioning frequency converter 20 can comprise: the grid-connected module 210 of commutation inversion, inverted power module 220 and the second dc bus 230, and the grid-connected module 210 of commutation inversion is connected with inverted power module 220 by the second dc bus 230; First dc bus 30 and the second dc bus 230 are connected in parallel.
The air conditioning frequency converter of the DC frequency converting air-conditioner shown in the embodiment of the present invention is arranged between utility network and the air-conditioner set of convertible frequency air-conditioner, concrete, the grid-connected module 210 of commutation inversion is external in utility network, utility network can be the utility network etc. between utility grid or enterprise, family, community, the air-conditioner set of the external solar energy convertible frequency air-conditioner of inverted power module 220, embodiment of the present invention indication air-conditioner set can be the parts that the compressor of air conditioner of solar energy convertible frequency air-conditioner etc. needs to carry out powering.Optionally, the air conditioning frequency converter that the embodiment of the present invention provides can be two level converters or three-level converter.
The size of the power that the grid-connected module 210 of the commutation inversion that the present embodiment provides and inverted power module 220 can provide according to solar battery array group 10 and air-conditioner set power demand, realize rectification function or inversion grid connection function, detailed process is as follows:
When the power that solar battery array group 10 provides is less than air-conditioner set power demand, the direct current that solar battery array group 10 produces transfers to inverted power module 220 through the first dc bus 30 and the second dc bus 230, the grid-connected module of commutation inversion 210 obtains alternating current from external utility network simultaneously, be after direct current by the AC conversion of acquisition, flow to inverted power module 220, the direct current that solar battery array group 10 provides by inverted power module 220 and the DC conversion that the grid-connected module 210 of commutation inversion provides are alternating current, driving air-conditioner set works,
When the power that solar battery array group 10 provides equals air-conditioner set power demand, the DC power transmission that solar battery array group 10 produces is to inverted power module 220, the DC conversion corresponding with air-conditioner set power demand that solar battery array 100 provides by inverted power module 220 is alternating current, driving air-conditioner set works, now, the grid-connected module 210 of commutation inversion does not work;
When the power that solar battery array group 10 provides equals air-conditioner set power demand, the galvanic part that solar battery array group 10 provides will be supplied to inverted power module 220, another part will flow to utility network by the grid-connected module 210 of commutation inversion, then, the DC conversion corresponding with air-conditioner set power demand that solar battery array group 10 provides by inverted power module 220 is alternating current, driving air-conditioner set works, another part DC conversion that solar battery array group 10 provides by the grid-connected module 210 of commutation inversion is after alternating current, flow to utility network, wherein another part of providing of solar battery array group 10 and unnecessary direct current are solar battery array group 10 direct current remaining when meeting air-conditioner set power demand,
When air-conditioner set is idle, when namely air-conditioner set does not work, all DC conversion that solar battery array group 10 provides by the grid-connected module of commutation inversion 210 are alternating current, flow to utility network.
In the embodiment of the present invention, the power that solar battery array group 10 provides obtains by the DC voltage and electric current detecting the first dc bus 30; Then determined by the current operating mode of convertible frequency air-conditioner for the power needed for air-conditioner set, the concrete detection mode of the power that the embodiment of the present invention provides for solar battery array group 10 and the power needed for air-conditioner set is not limited.
Preferably, the grid-connected module 210 of commutation inversion that provides of the embodiment of the present invention is for having the four quadrant convertor of rectification and inversion grid connection function; Inverted power module 220 can be DC (Direct Current, direct current)/AC (Alternating Current exchanges) inverter.
It should be noted that, switching between the rectification of the grid-connected module 210 of commutation inversion and inversion grid connection can be carried out according to energy management algorithm and rectify control algorithm, the energy flow that energy management algorithm controls utility network and solar battery array group 10 to, rectify control algorithm controls the grid-connected module 210 of commutation inversion and is in rectification state or inversion grid connection state.
The grid-connected module 210 of the commutation inversion that the present embodiment provides can comprise: commutation inversion parallel network circuit and the control circuit that can realize AC/DC rectification and DC/AC inversion grid connection; When commutation inversion parallel network circuit is operated in AC/DC rectification state, be direct current by the AC conversion of utility network, flow to inverted power module 220; When commutation inversion parallel network circuit is operated in DC/AC inversion grid connection state, DC conversion solar battery array group 10 provided is alternating current, flows to utility network;
Control circuit is connected with commutation inversion parallel network circuit, when power for providing in solar battery array group 10 is less than air-conditioner set power demand, control commutation inversion parallel network circuit and be in AC/DC rectification duty, when the power that solar battery array group 10 provides is greater than air-conditioner set power demand, control commutation inversion parallel network circuit and be in DC/AC inversion grid connection duty, the unnecessary DC conversion provided to make solar battery array group 10 is for after alternating current, flow to utility network, when air-conditioner set is idle, control commutation inversion parallel network circuit and be in DC/AC inversion grid connection duty, the DC conversion provided to make solar battery array group 10 is for after alternating current, flow to utility network.Concrete, control circuit can control according to energy management algorithm and rectify control algorithm realization commutation inversion parallel network circuit in the switching between AC/DC rectification and DC/AC inversion grid connection duty.
The structure of the MPPT controller 110 in the present embodiment as shown in Figure 3, comprise multiple unit module, control unit 1101 and communication unit 1102, optionally, this unit module comprises input joining unit 1103, data acquisition unit 1104, boosting unit 1105, electric arc isolated location 1106, anti-PID unit 1107 and anti-PID power supply 1108.
Wherein, input joining unit 1103 is connected with solar battery array 100, data acquisition unit 1104 is connected with input joining unit 1103, and boosting unit 1105 is connected with data acquisition unit 1104, and electric arc isolated location 1106 is connected with boosting unit 1105 respectively with anti-PID unit 1107.The direct current that input joining unit 1103 produces for receiving solar battery array 100, and carry out short circuit or overcurrent protection etc. by the fuse of self; Data acquisition unit 1104 is for gathering the galvanic voltage and current status signal received; Boosting unit 1105 exports for the MPPT promoting galvanic voltage and the tracing control solar battery array 100 produced with stable solar battery array 100, with the state making solar battery array 100 always work in maximum power output; Electric arc isolated location 1106 is for controlling the break-make of MPPT controller 110 and the first dc bus 30; Anti-PID unit 1107 for the formation of the DC voltage of preset range, and between the negative pole that described DC voltage is applied to solar battery array 100 and ground, to suppress the PID effect of solar battery array 100; Anti-PID power supply 1108 is connected with anti-PID unit 1107, for providing power supply for it.
Control unit 1101 is connected with anti-PID unit 1107 with electric arc isolated location 1106, boosting unit 1105 respectively, for controlling the break-make of electric arc isolated location 1106, control voltage and the power stage of boosting unit 1105, and Control PID unit 1107 carries out PWM (Pulse Width Modulation, pulse width modulation) modulation, to form the DC voltage of preset range; Communication unit 1102 is connected with control unit 1101 and anti-PID unit 1107, for the data that reception control unit 1101 and anti-PID unit 1107 send, and sends data to monitoring system, so that monitor staff positions abort situation.
Particularly, after input joining unit 1103 receives the direct current of solar battery array 100 generation, by this DC power transmission to data acquisition unit 1104, the status signals such as the galvanic voltage and current that data acquisition unit 1104 collection receives, and by the status signal transmission that collects to control unit 1101, control unit 1101 carries out MPPT control according to d. c. voltage signal and DC current signal, maximum power output state is always worked in make solar battery array 100, in addition, control unit 1101 also can detect DC side according to d. c. voltage signal and DC current signal and whether possess arc characteristic, then control unit 1101 reports monitoring system by communication unit 1102, and send open command to electric arc isolated location 1106, air conditioning frequency converter 20 would not be caused like this to shut down because of protection, also be convenient to monitor staff position abort situation.
In the embodiment of the present invention, MPPT controller may be by IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), MOSFT (Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide layer-semiconductor-field-effect transistor), IGCT (Intergrated Gate Commutated Thyristors, integrated gate commutated thyristor), IGCT constant power semiconductor devices realizes direct current transformation and multichannel MPPT following function, but is not limited only to above-mentioned semiconductor device.
In the present embodiment, when the power of control unit 1101 also for providing in solar battery array group 10 is greater than air-conditioner set power demand, control section solar battery array 100 enters resting state, when the power provided in solar battery array group 10 is less than air-conditioner set power demand, control section solar battery array 100 enters duty.
The solar energy frequency-conversion air-conditioning system that the present embodiment provides, the MPPT controller that solar battery array group comprises at least one solar battery array and is directly connected with each solar battery array, this MPPT controller is connected with air conditioning frequency converter by the first dc bus, the direct current boosting that solar battery array is producing by this MPPT controller transfers on the basis of air conditioning frequency converter, can also the MPPT output of tracing control solar battery array and the PID effect of suppression solar battery array.
The structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 4 provides for the embodiment of the present invention two, shown in composition graphs 2 and Fig. 4, the frequency-conversion air-conditioning system of solar energy shown in Fig. 4 is compared with system shown in Figure 2, and the solar energy frequency-conversion air-conditioning system shown in Fig. 4 also comprises: line concentration unit 40;
Line concentration unit 40 is arranged between MPPT controller 110 and air conditioning frequency converter 20;
The direct current that solar battery array 100 produces, after MPPT controller 110 and line concentration unit 40 distribution, is delivered to air conditioning frequency converter 20 by the first dc bus 30.
The structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 5 provides for the embodiment of the present invention three, shown in composition graphs 2 and Fig. 5, system shown in Figure 5 is compared with system shown in Figure 2, and system shown in Figure 5 also comprises: on-load switch 50 and energy-storage units 60;
Energy-storage units 60 is in parallel with the first dc bus 30 by on-load switch 50;
When energy-storage units 60 is greater than air-conditioner set power demand for the power provided in solar battery array group 10, store the unnecessary direct current that solar battery array group 10 provides, when the power that solar battery array group 10 provides is less than air-conditioner set power demand, direct current is provided, to drive air-conditioner set work to air conditioning frequency converter 20.
Particularly, the mode of operation of energy-storage units 60 comprises energy storage pattern and discharge mode;
Wherein, when the power of control unit 1101 also for providing in solar battery array group 10 is greater than air-conditioner set power demand, control energy-storage units 60 and be operated in energy storage pattern, to store the unnecessary direct current that solar battery array group 10 provides, when the power that solar battery array group 10 provides is less than air-conditioner set power demand, control energy-storage units 60 and be operated in discharge mode, to provide direct current to air conditioning frequency converter 20.
The structural representation of the solar energy frequency-conversion air-conditioning system that Fig. 6 provides for the embodiment of the present invention four, shown in composition graphs 4 and Fig. 6, system shown in Figure 6 is compared with system shown in Figure 4, described in Fig. 6, system also comprises: on-load switch 50 and energy-storage units 60, wherein, structure and the operation principle of the structure of on-load switch 50 and energy-storage units 60 and operation principle and above-mentioned on-load switch and energy-storage units are identical, do not repeat them here.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a solar energy frequency-conversion air-conditioning system, is characterized in that, comprising: solar battery array group, air conditioning frequency converter and the first dc bus;
Described solar battery array group comprises multiple solar battery array and multiple MPPT controller, and MPPT controller described in each is all connected with solar battery array described in one or more; Described MPPT controller is connected with described air conditioning frequency converter by described first dc bus, exports for the MPPT promoted with stablize solar battery array described in galvanic voltage that described solar battery array produces, the every road of tracing control and suppresses the PID effect of described solar battery array;
Described air conditioning frequency converter comprises: the grid-connected module of commutation inversion, inverted power module and the second dc bus, the grid-connected module of described commutation inversion is connected with utility network, described inverted power module is connected with air-conditioner set, the grid-connected module of described commutation inversion is connected with described inverted power module by described second dc bus, and described first dc bus and described second dc bus are connected in parallel;
The grid-connected module of described commutation inversion is used for when the power that described solar battery array group provides is less than described air-conditioner set power demand, the AC conversion of described utility network is direct current and is delivered to described inverted power module, or when the power that described solar battery array group provides is greater than described air-conditioner set power demand, the unnecessary DC conversion that described solar battery array group provides is alternating current and is delivered to described utility network, or when described air-conditioner set is idle, the DC conversion that described solar battery array group provides is alternating current and is delivered to described utility network,
Described inverted power module is used for when the power that described solar battery array group provides is less than described air-conditioner set power demand, the DC conversion that the direct current provide described solar battery array group and the grid-connected module of described commutation inversion provide is alternating current, to drive described air-conditioner set work, or when the power that described solar battery array group provides is more than or equal to described air-conditioner set power demand, the DC conversion corresponding with described air-conditioner set power demand described solar battery array group provided is alternating current, to drive described air-conditioner set work.
2. solar energy frequency-conversion air-conditioning system according to claim 1, is characterized in that, described MPPT controller comprises multiple unit module, the anti-PID unit that described unit module comprises boosting unit and is connected with described boosting unit;
Described boosting unit exports for the MPPT promoted with stablize solar battery array described in galvanic voltage and tracing control that described solar battery array produces, with the state making described solar battery array always work in maximum power output;
Described anti-PID unit for the formation of the DC voltage of preset range, and between the negative pole that described DC voltage is applied to described solar battery array and ground, to suppress the PID effect of described solar battery array.
3. solar energy frequency-conversion air-conditioning system according to claim 2, is characterized in that, described unit module also comprises the electric arc isolated location, data acquisition unit and the input joining unit that is connected with described data acquisition unit that are connected with described boosting unit;
Described input joining unit is connected with described solar battery array, for receiving the direct current that described solar battery array produces; Described data acquisition unit is for gathering described galvanic voltage and current status signal; Described electric arc isolated location is connected with described first dc bus, disconnects for the connected sum controlling described MPPT controller and described first dc bus.
4. solar energy frequency-conversion air-conditioning system according to claim 3, is characterized in that, described MPPT controller also comprises control unit and communication unit;
Described control unit is connected with anti-PID unit with described electric arc isolated location, boosting unit respectively, for controlling the break-make of described electric arc isolated location, control voltage and the power stage of described boosting unit, and control described PID unit and carry out PWM to form the DC voltage of preset range;
Described communication unit is connected with described control unit and anti-PID unit, for receiving the data of described control unit and the transmission of anti-PID unit, and described data is transferred to monitoring system.
5. solar energy frequency-conversion air-conditioning system according to claim 4, it is characterized in that, when the power of described control unit also for providing in described solar battery array group is greater than described air-conditioner set power demand, described in control section, solar battery array enters resting state, when the power that described solar battery array group provides is less than described air-conditioner set power demand, control section or whole described solar battery array enter duty.
6. solar energy frequency-conversion air-conditioning system according to claim 1, is characterized in that, described solar energy frequency-conversion air-conditioning system also comprises line concentration unit;
Described line concentration unit is arranged between described MPPT controller and described first dc bus;
The direct current that described solar battery array produces, after described MPPT controller and described line concentration unit distribution, is delivered to described air conditioning frequency converter by described first dc bus.
7. the solar energy frequency-conversion air-conditioning system according to any one of claim 1 ~ 6, is characterized in that, described solar energy frequency-conversion air-conditioning system also comprises on-load switch and energy-storage units, and described energy-storage units is in parallel with described first dc bus by described on-load switch;
Described energy-storage units is used for when the power that described solar battery array group provides is greater than described air-conditioner set power demand, store the unnecessary direct current that described solar battery array group provides, when the power that described solar battery array group provides is less than described air-conditioner set power demand, direct current is provided, to drive described air-conditioner set work to described air conditioning frequency converter.
8. solar energy frequency-conversion air-conditioning system according to claim 7, is characterized in that, the mode of operation of described energy-storage units comprises energy storage pattern and discharge mode;
When the power of described control unit also for providing in described solar battery array group is greater than described air-conditioner set power demand, control described energy-storage units and be operated in energy storage pattern, to store the unnecessary direct current that described solar battery array group provides, when the power that described solar battery array group provides is less than described air-conditioner set power demand, control described energy-storage units and be operated in discharge mode, to provide direct current to described air conditioning frequency converter.
9. solar energy frequency-conversion air-conditioning system according to claim 1, is characterized in that, the grid-connected module of described commutation inversion is the four quadrant convertor with rectification and inversion grid connection function.
10. solar energy frequency-conversion air-conditioning system according to claim 1, is characterized in that, air conditioning frequency converter is two level converters or three-level converter.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552878A (en) * | 2015-12-24 | 2016-05-04 | 珠海格力电器股份有限公司 | DC micro-grid structure |
| CN106482300A (en) * | 2016-10-31 | 2017-03-08 | 广东美的制冷设备有限公司 | Solar air conditioner control method, device and solar air conditioner |
| CN106941261A (en) * | 2017-04-10 | 2017-07-11 | 上海质卫环保科技有限公司 | Intelligent junction box with anti-PID functions |
| CN107388661A (en) * | 2017-07-27 | 2017-11-24 | 广东美的制冷设备有限公司 | Solar air-conditioner system and its Poewr control method and device |
| 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 |
| CN114256879A (en) * | 2022-01-27 | 2022-03-29 | 青岛海信日立空调系统有限公司 | Photovoltaic air conditioner, control method thereof and photovoltaic air conditioning system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011101533A (en) * | 2009-11-06 | 2011-05-19 | Panasonic Electric Works Co Ltd | Power distribution system |
| CN102705944A (en) * | 2012-06-28 | 2012-10-03 | 南车株洲电力机车研究所有限公司 | Solar frequency-conversion air-conditioning system |
| CN103023127A (en) * | 2012-12-28 | 2013-04-03 | 劲达技术(河源)有限公司 | Solar air conditioner and power supply method thereof |
| JP2013246548A (en) * | 2012-05-24 | 2013-12-09 | Career System Inc | Photovoltaic power generation system |
| CN104377732A (en) * | 2014-11-21 | 2015-02-25 | 南车株洲电力机车研究所有限公司 | DC bus distributed MPPT photovoltaic power generation system |
| CN104393833A (en) * | 2014-11-21 | 2015-03-04 | 南车株洲电力机车研究所有限公司 | Photovoltaic intelligent power |
| CN104734178A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Solar air conditioning system and control method thereof |
-
2015
- 2015-06-29 CN CN201510367050.8A patent/CN104949246A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011101533A (en) * | 2009-11-06 | 2011-05-19 | Panasonic Electric Works Co Ltd | Power distribution system |
| JP2013246548A (en) * | 2012-05-24 | 2013-12-09 | Career System Inc | Photovoltaic power generation system |
| CN102705944A (en) * | 2012-06-28 | 2012-10-03 | 南车株洲电力机车研究所有限公司 | Solar frequency-conversion air-conditioning system |
| CN103023127A (en) * | 2012-12-28 | 2013-04-03 | 劲达技术(河源)有限公司 | Solar air conditioner and power supply method thereof |
| CN104734178A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Solar air conditioning system and control method thereof |
| CN104377732A (en) * | 2014-11-21 | 2015-02-25 | 南车株洲电力机车研究所有限公司 | DC bus distributed MPPT photovoltaic power generation system |
| CN104393833A (en) * | 2014-11-21 | 2015-03-04 | 南车株洲电力机车研究所有限公司 | Photovoltaic intelligent power |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552878A (en) * | 2015-12-24 | 2016-05-04 | 珠海格力电器股份有限公司 | DC micro-grid structure |
| CN105552878B (en) * | 2015-12-24 | 2018-04-20 | 珠海格力电器股份有限公司 | DC micro-grid structure |
| 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 |
| CN106482300A (en) * | 2016-10-31 | 2017-03-08 | 广东美的制冷设备有限公司 | Solar air conditioner control method, device and solar air conditioner |
| CN106941261A (en) * | 2017-04-10 | 2017-07-11 | 上海质卫环保科技有限公司 | Intelligent junction box with anti-PID functions |
| CN107388661A (en) * | 2017-07-27 | 2017-11-24 | 广东美的制冷设备有限公司 | Solar air-conditioner system and its Poewr control method and device |
| CN114256879A (en) * | 2022-01-27 | 2022-03-29 | 青岛海信日立空调系统有限公司 | Photovoltaic air conditioner, control method thereof and photovoltaic air conditioning system |
| WO2023142261A1 (en) * | 2022-01-27 | 2023-08-03 | 青岛海信日立空调系统有限公司 | Photovoltaic air conditioner and control method therefor and photovoltaic air conditioner system |
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