CN201985604U - Hybrid power supply system for air conditioner - Google Patents
Hybrid power supply system for air conditioner Download PDFInfo
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- CN201985604U CN201985604U CN2010205392158U CN201020539215U CN201985604U CN 201985604 U CN201985604 U CN 201985604U CN 2010205392158 U CN2010205392158 U CN 2010205392158U CN 201020539215 U CN201020539215 U CN 201020539215U CN 201985604 U CN201985604 U CN 201985604U
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- solar cell
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- 238000005070 sampling Methods 0.000 description 25
- 238000004378 air conditioning Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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Abstract
The utility model discloses idle call hybrid power supply system includes AC alternating current power supply, rectifier bridge, Boost2 Boost circuit, solar cell array, Boost1 Boost circuit, electric capacity, dc-to-AC converter and compressor, wherein solar cell output is through the side of Boost1 Boost circuit access direct current bus, and the PWM1 signal of inserting first switch tube in this Boost1 Boost circuit is produced by solar cell output power control system; the output of an AC power supply is connected to the side of a DC bus through a rectifier bridge and a Boost2 booster circuit, the PWM2 of a second switching tube is connected to the Boost2 booster circuit, and signals are provided by a power factor correction control system. The utility model discloses but idle call hybrid power supply system furthest utilizes solar cell, stabilizes the commercial power and the hybrid power supply system of solar energy of power supply for domestic air conditioner.
Description
[technical field]
The utility model relates to field of air conditioning, refers in particular to a kind of solar airconditioning, the applied electric power system of convertible frequency air-conditioner.
[background technology]
Now is the new century of major premise with the environmental protection, how with solar energy, regenerative resources such as wind energy are used, be translated into electric energy or heat energy, be one of relatively more popular research of present field of air conditioning, wherein the research of solar airconditioning mainly is aspect the central air-conditioning and central heating of heavy construction, relate to the fewer of domestic air conditioning, general domestic air conditioning uses single mains-supplied system, perhaps part is used solar electric power supply system, fail to make full use of solar energy resources, therefore how to make the real family oriented of solar airconditioning, miniaturization, the stable domestic air conditioning that provides is powered, and price is suitable, is the problem that presses for solution in the present solar airconditioning industrialization.
Therefore, providing a kind of and can utilize solar cell to greatest extent, is necessary for the idle call electric power system of domestic air conditioning stable power-supplying is real.
[summary of the invention]
The purpose of this utility model is to provide a kind of can utilize solar cell to greatest extent, is the civil power and the solar energy mixed power supply system of domestic air conditioning stable power-supplying.Make full use of solar cell by the control busbar voltage, improve the efficiency of air-conditioning, make solar airconditioning family oriented, miniaturization.
For realizing the utility model purpose, provide following technical scheme:
A kind of idle call mixed power supply system of the utility model, the scheme of employing solar cell and civil power hybrid power supply.In order to utilize solar cell to greatest extent, the control mode of employing is: when the power of air conditioner during greater than the Maximum Power Output of solar cell, solar cell and civil power are simultaneously to the air conditioner power supply, and this moment, solar cell moved with maximum power; When air conditioner power during less than the solar cell Maximum Power Output, this moment, solar cell was powered to air conditioner.
The utility model idle call mixed power supply system, it comprises AC AC power, rectifier bridge, Boost2 booster circuit, solar battery array, Boost1 booster circuit, capacitor C, inverter and compressor, the AC AC power becomes direct current behind rectifier bridge, insert the dc bus side through the Boost2 booster circuit then, the PWM2 signal of second switch pipe is provided by the Power Factor Correction Control system in this Boost2 booster circuit; Solar cell output inserts the dc bus side through the Boost1 booster circuit, the PWM1 signal that inserts first switching tube in this Boost1 booster circuit is produced by solar cell power output control system, and last dc bus side exports cooler compressor to through inverter.
This solar cell power output control system comprises pi controller, maximum power controller, given generator, the given voltage v of solar cell bus bar side
Dc1 *, dc bus side feedback voltage v
DcExport given current i through pi controller PI
u *Solar cell output voltage v and solar energy output current i export given current i through the maximum power controller
p *Given generator is relatively exported given current i in the back according to air-conditioning power and solar cell maximum power
*Given current i
*Export the duty ratio duty1 of first switching tube with solar cell output current i through pi controller PI, duty ratio duty1 gives first switching tube through PWM generator output PWM1 signal.
This Power Factor Correction Control system comprises that voltage regulator, discrete integrator, equivalence detect resistance, the given voltage v of this power factor correction bus bar side
Dc2 *With feedback voltage v
DcThrough voltage regulator output modulation voltage u
m, modulation voltage u
mProduce u through discrete integration
2, feedback current i
DcDetect resistance R with equivalence
sThe u that product produces
1, u
1With u
2Compare the duty ratio duty2 of output second switch pipe, duty ratio duty2 exports the PWM2 signal to the second switch pipe through the PWM generator.
This Boost1 booster circuit and Boost2 booster circuit comprise inductance L 1, L2 and diode D1, the D2 of series connection respectively, insert the first switching tube PWM1 and second switch pipe PWM2 respectively at inductance and diode, described first switching tube and second switch pipe adopt IGBT or MOSFET.
The utility model also provides a kind of idle call hybrid power supply method that adopts described mixed power supply system.Because the busbar voltage of civil power after rectification and Active Power Factor Correction far above the solar cell output voltage, therefore needs to adopt the Boost circuit that the solar cell output voltage is raised.System controls DC bus-bar voltage by two Boost circuit and realizes, wherein Boost1 controls the solar cell output voltage, Boost2 control civil power is through the output voltage (can be referring to utility model patent " monocycle power factor emendation method ", application number is 200810219009.6) of rectifier bridge.When air conditioner power during,, realize powering simultaneously of solar cell with civil power by maximum power control real-time regulated Boost1 output voltage greater than the solar cell Maximum Power Output; When air conditioner power during less than the solar cell Maximum Power Output, control Boost1 output voltage is greater than the Boost2 output voltage, because the unilateral conduction of diode D2 makes solar cell power to air conditioner separately.
Use the idle call hybrid power supply method of aforementioned idle call mixed power supply system to comprise the steps:
(1) relatively air conditioner power and solar cell Maximum Power Output when air conditioner power during greater than the solar cell Maximum Power Output, enter step (2), when air conditioner power during less than the solar cell Maximum Power Output, enter step (3);
(2) by the maximum power controller real-time regulated Boost1 booster circuit of solar cell, make its output voltage consistent with the output voltage of Boost2 booster circuit, realization solar cell and civil power are powered to air conditioner simultaneously;
(3) regulate the Boost1 booster circuit by the maximum power controller of solar cell, make the output voltage of its output voltage greater than the Boost2 booster circuit, the realization solar cell is powered to air conditioner separately.
It controls Boost1 booster circuit and Boost2 booster circuit by the following method:
The given voltage v of solar cell bus bar side
Dc1 *, dc bus side feedback voltage v
DcExport given current i through pi controller PI
u *, solar cell output voltage v and solar energy output current i export given current i through the maximum power controller
p *, given generator is relatively exported given current i in the back according to air-conditioning power and solar cell maximum power
*, given current i
*Export the duty ratio duty1 of first switching tube with solar cell output current i through pi controller PI, duty ratio duty1 gives first switching tube through PWM generator output PWM1 signal;
The given voltage v of this power factor correction bus bar side
Dc2 *With feedback voltage v
DcThrough voltage regulator output modulation voltage u
m, modulation voltage u
mProduce u through discrete integration
2, feedback current i
DcDetect resistance R with equivalence
sThe u that product produces
1, u
1With u
2Compare the duty ratio duty2 of output second switch pipe, duty ratio duty2 exports the PWM2 signal to the second switch pipe through the PWM generator.
Solar cell maximum power control method is as follows described in this hybrid power supply method:
Calculate p (k) according to formula, p (k-1) compares then:
1) if p (k)＞p (k-1), if simultaneously v (k)＞v (k-1), then sign (k)=-1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculate given current i
p *(k), preserve p (k) and v (k) at last;
2) if p (k)＞p (k-1), if simultaneously v (k)≤v (k-1), then sign (k)=1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculate given current i
p *(k), preserve p (k) and v (k) at last;
3) if p (k)＜p (k-1), if simultaneously v (k)＞v (k-1), then sign (k)=1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculate given current i
p *(k), preserve p (k) and v (k) at last;
4) if p (k)＜p (k-1), if simultaneously v (k)≤v (k-1), then sign (k)=-1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculating calculates given current i
p *(k), preserve p (k) and v (k) at last;
5) if p (k)=p (k-1) then preserves p (k) and v (k);
Wherein p (k) is the power of k sampling period solar cell, v (k) is the voltage of k sampling period solar cell, i (k) is the electric current of k sampling period solar cell, p (k-1) is the power of k-1 sampling period solar cell, v (k-1) is the voltage of k-1 sampling period solar cell, sign (k) is the symbol (being expressed as 1 or-1) in k sampling period, i
p *(k) the given electric current of k sampling period of expression maximum power controller output, Δ i
*Expression maximum power controller is exported the totalizing step of given electric current.
The contrast prior art the utlity model has following advantage:
The utility model mixed power supply system can utilize solar cell to greatest extent, is the civil power and the solar energy mixed power supply system of domestic air conditioning stable power-supplying.Make full use of solar cell by the control busbar voltage, improve the efficiency of air-conditioning, make solar airconditioning family oriented, miniaturization.Use the air conditioner of this scheme, can make full use of the solar energy of environmental protection,, bring material benefit to the consumer for the energy-saving and emission-reduction of China contribute.
[description of drawings]
Fig. 1 is the utility model idle call mixed power supply system circuit diagram;
Fig. 2 is the utility model solar cell power output control system block diagram;
Fig. 3 is the utility model Power Factor Correction Control system block diagram;
Fig. 4 is the utility model solar cell maximum power controller flow chart.
[embodiment]
See also Fig. 1 idle call mixed power supply system circuit, existing air-condition circuits comprises AC AC power, rectifier bridge, Boost2 booster circuit, capacitor C, inverter and compressor.Because solar energy output voltage v is far below bus bar side voltage v
Dc, need the Boost1 booster circuit to boost.Realize the hybrid power supply of solar energy and civil power by controlling first switching tube and second switch pipe.
See also Fig. 2 solar cell power output control system block diagram, being input as of solar cell power output control system: the given voltage v of solar cell bus bar side
Dc1 *, dc bus side feedback voltage v
Dc, solar cell output voltage v, solar energy output current i; System's output PWM1 signal is given first switching tube of Boost1 booster circuit.Its flow process is: the given voltage v of solar cell bus bar side
Dc1 *With feedback voltage v
DcExport given current i through pi controller PI
u *Solar cell output voltage v and solar energy output current i export given current i through the maximum power controller
p *Given generator is relatively exported given current i in the back according to air-conditioning power and solar cell maximum power
*Given current i
*Export the duty ratio duty1 of first switching tube with solar cell output current i through pi controller PI, duty ratio duty1 gives first switching tube through PWM generator output PWM1 signal.
See also Fig. 3 Power Factor Correction Control system block diagram, the Power Factor Correction Control system is input as: the given voltage v of power factor correction bus bar side
Dc2 *, dc bus side feedback voltage v
Dc, dc bus side feedback current i
DcSystem's output PWM2 signal is given the second switch pipe of Boost2 booster circuit.Its flow process is: the given voltage v of power factor correction bus bar side
Dc2 *With feedback voltage v
DcThrough voltage regulator output modulation voltage u
m, modulation voltage u
mProduce u through discrete integration
2, feedback current i
DcDetect resistance R with equivalence
sThe u that product produces
1, u
1With u
2Compare the duty ratio duty2 of output second switch pipe, duty ratio duty2 exports the PWM2 signal to the second switch pipe through the PWM generator.
See also Fig. 4 solar cell maximum power controller flow chart, wherein p (k) is the power of k sampling period solar cell, v (k) is the voltage of k sampling period solar cell, i (k) is the electric current of k sampling period solar cell, p (k-1) is the power of k-1 sampling period solar cell, v (k-1) is the voltage of k-1 sampling period solar cell, and sign (k) is the symbol (being expressed as 1 or-1) in k sampling period, i
p *(k) the given electric current of k sampling period of expression maximum power controller output, Δ i
*Expression maximum power controller is exported the totalizing step of given electric current.
Its flow process is: at first calculate the power p (k) of k sampling period solar cell according to formula, compare with k-1 sampling period solar cell power p (k-1) then:
1) if p (k)＞p (k-1), promptly power is rising, if v (k)＞v (k-1) simultaneously, promptly voltage is rising, then sign (k)=-1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculate the given electric current of k sampling period maximum power controller output; Preserve the voltage and the power of k sampling period solar cell at last.
2) if p (k)＞p (k-1), promptly power is rising, if v (k)≤v (k-1) simultaneously, promptly voltage is descending, then sign (k)=1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculate the given electric current of k sampling period maximum power controller output; Preserve the voltage and the power of k sampling period solar cell at last.
3) if p (k)＜p (k-1), promptly power is descending, if v (k)＞v (k-1) simultaneously, promptly voltage is rising, then sign (k)=1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculate the given electric current of k sampling period maximum power controller output; Preserve the voltage and the power of k sampling period solar cell at last.
4) if p (k)＜p (k-1), promptly power is descending, if v (k)≤v (k-1) simultaneously, promptly voltage is descending, then sign (k)=-1; Follow i by formula
p *(k)=i
p *(k)+sign (k) * Δ i
*Calculate the given electric current of k sampling period maximum power controller output; Preserve the voltage and the power of k sampling period solar cell at last.
5) if p (k)=p (k-1), promptly power is constant, then preserves the voltage and the power of k sampling period solar cell.
In concrete application example, suppose that the given controller PI of power factor correction bus bar side of Boost2 booster circuit produces voltage duty cycle duty1, obtain the control signal PWM1 of first switching tube among the Boost1 again through the PWM generator.The voltage v at capacitor C two ends this moment
DcBe about 350 volts, Boost1 and Boost2 booster circuit are worked simultaneously, and promptly civil power and solar cell are powered simultaneously.
When this moment air-conditioning power less than 200 watt-hours, the given voltage v of Boost1 booster circuit bus bar side
Dc1 *Be 360 volts, PI is output as i through pi controller
u *The output voltage v and the output current i of solar cell are output as i through the maximum power controller
p *It is given that given generator is chosen pi controller PI output current, i.e. i
*=i
u *, given current i
*Produce voltage duty cycle duty1 with solar cell output current i through pi controller PI, obtain the control signal PWM1 of first switching tube among the Boost1 again through the PWM generator.The voltage v at capacitor C two ends this moment
DcBe about 360 volts, because the given voltage v of power factor correction bus bar side of Boost2 booster circuit
Dc2 *Be 350 volts, be lower than 360 volts of dc bus side feedback voltages,, have only the work of Boost1 booster circuit, promptly have only solar cell to power separately because the single-phase conductivity of diode D2 makes the Boost2 booster circuit quit work.
The air-conditioning power that the utility model is mentioned has comprised the power of solar cell.
The above only is preferred embodiment of the present utility model, and protection range of the present utility model is not limited thereto, and anyly all belongs within the utility model protection range based on the equivalent transformation on the technical solutions of the utility model.
Claims (5)
1. idle call mixed power supply system, it comprises AC AC power, rectifier bridge, Boost2 booster circuit, electric capacity, inverter and compressor, it is characterized in that, it further comprises solar battery array, Boost1 booster circuit, and solar cell output inserts the dc bus side through the Boost1 booster circuit; The AC AC power becomes direct current behind rectifier bridge, insert the dc bus side through the Boost2 booster circuit then; This dc bus side exports cooler compressor to through inverter.
2. idle call mixed power supply system as claimed in claim 1 is characterized in that, comprises the PWM1 control signal of first switching tube in this Boost1 booster circuit, and the PWM1 control signal of this first switching tube is produced by solar cell power output control system; This Boost2 booster circuit comprises the PWM2 control signal of second switch pipe, and the PWM2 control signal of this second switch pipe is produced by the Power Factor Correction Control system.
3. idle call mixed power supply system as claimed in claim 2 is characterized in that, this solar cell power output control system comprises pi controller, maximum power controller, the given generator that is connected.
4. idle call mixed power supply system as claimed in claim 2 is characterized in that, this Power Factor Correction Control system comprises that the voltage regulator, discrete integrator, the equivalence that are connected detect resistance.
5. idle call mixed power supply system as claimed in claim 1, it is characterized in that, this Boost1 booster circuit and Boost2 booster circuit comprise the inductance and the diode of series connection respectively, insert first switching tube and second switch pipe respectively at inductance and diode, described first switching tube and second switch pipe adopt IGBT or MOSFET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205392158U CN201985604U (en) | 2010-09-19 | 2010-09-19 | Hybrid power supply system for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205392158U CN201985604U (en) | 2010-09-19 | 2010-09-19 | Hybrid power supply system for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201985604U true CN201985604U (en) | 2011-09-21 |
Family
ID=44613055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205392158U Expired - Lifetime CN201985604U (en) | 2010-09-19 | 2010-09-19 | Hybrid power supply system for air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403776A (en) * | 2010-09-19 | 2012-04-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Hybrid power supply system and hybrid power supply method for air conditioner |
| CN114337418A (en) * | 2021-12-30 | 2022-04-12 | 海信（山东）空调有限公司 | PFC circuit control method, air conditioner and computer storage medium |
-
2010
- 2010-09-19 CN CN2010205392158U patent/CN201985604U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403776A (en) * | 2010-09-19 | 2012-04-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Hybrid power supply system and hybrid power supply method for air conditioner |
| CN102403776B (en) * | 2010-09-19 | 2013-12-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Hybrid power supply system and hybrid power supply method for air conditioner |
| CN114337418A (en) * | 2021-12-30 | 2022-04-12 | 海信（山东）空调有限公司 | PFC circuit control method, air conditioner and computer storage medium |
| CN114337418B (en) * | 2021-12-30 | 2023-10-27 | 海信空调有限公司 | PFC circuit control method, air conditioner and computer storage medium |
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Granted publication date: 20110921 |
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| CX01 | Expiry of patent term |