CN101806490A - Frequency-conversion air conditioner with solar cell - Google Patents

Frequency-conversion air conditioner with solar cell Download PDF

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Publication number
CN101806490A
CN101806490A CN201019050034A CN201019050034A CN101806490A CN 101806490 A CN101806490 A CN 101806490A CN 201019050034 A CN201019050034 A CN 201019050034A CN 201019050034 A CN201019050034 A CN 201019050034A CN 101806490 A CN101806490 A CN 101806490A
Authority
CN
China
Prior art keywords
solar cell
air conditioner
frequency
power
solar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201019050034A
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Chinese (zh)
Inventor
李洪涛
谢志君
许蔡辉
白东培
彭良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Electric Appliances Co Ltd
Original Assignee
Guangdong Midea Electric Appliances Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Midea Electric Appliances Co Ltd filed Critical Guangdong Midea Electric Appliances Co Ltd
Priority to CN201019050034A priority Critical patent/CN101806490A/en
Priority to CN201010230977.4A priority patent/CN101917054B/en
Publication of CN101806490A publication Critical patent/CN101806490A/en
Priority to PCT/CN2010/078619 priority patent/WO2011095020A1/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • 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
    • F24F2005/0067—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 with photovoltaic panels
    • 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
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/50—Energy storage in industry with an added climate change mitigation effect
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air Conditioning Control Device (AREA)
  • Photovoltaic Devices (AREA)
  • Inverter Devices (AREA)

Abstract

The invention relates to a frequency-conversion air conditioner with a solar cell, comprising the solar cell, a frequency-conversion air conditioner, a solar power supply controller connected between the solar cell and the frequency-conversion air conditioner and a mains supply, wherein the frequency-conversion air conditioner comprises an AC/DC rectifier and a direct-current frequency-conversion air conditioner circuit, and the solar power supply controller comprises a DC/high-voltage DC inverter and a maximum power tracker; and the maximum power tracker monitors the output power of the solar cell and controls the DC/high-voltage DC inverter to convert low-voltage direct current outputted by the solar cell to high-voltage direct current for directly supplying power to the direct-current frequency-conversion air conditioner circuit. After passing through the AC/DC rectifier, the mains supply is connected with the solar power supply controller in parallel to supply power to the direct-current frequency-conversion air conditioner circuit. The invention accords with the development direction of national energy saving and environmental protection, has the characteristics of simple and reasonable structure, low manufacturing cost, energy saving, environmental protection, reduced influence on environment, flexible operation, high energy efficiency ratio and wide range of application.

Description

The transducer air conditioning of band solar cell
Technical field
The present invention relates to a kind of air-conditioner, particularly a kind of transducer air conditioning with solar cell.
Background technology
The existing solar air conditioner that drives by solar cell, see accompanying drawing 1, manage by 9 pairs of solar cells 1 of solar powered controller, to battery 10 and 11 power supplies of DC/ high pressure DC inverter, be converted into the alternating voltage the same through high pressure DC/50 or 60Hz high pressure AC converter 13 again with civil power.Simultaneously, whether the electric weight that solar powered controller 9 detects solar cell 1, battery 10 is enough, control electronic switch 14, under all not enough situation of the electric weight of solar cell 1 and battery 10, control electronic switch 14 switches to civil power 5 and gives convertible frequency air-conditioner 15 power supplies, otherwise, switch to high pressure DC/50 or 60Hz high pressure AC converter 13 and give convertible frequency air-conditioner 15 power supplies.
There is following shortcoming in the solar air conditioner of this mode:
1) because the life of storage battery is limited at present, will damage in common 1～2 year, need the frequent battery of changing, this is to very big expense of user Lai Shuoshi, and the management of charging, discharge of 16 pairs of batteries 10 of the accumulator cell charging and discharging manager of solar powered controller 9 inside also can cause energy loss.
What 2) present convertible frequency air-conditioner was used all is the low frequency of the same 50Hz with civil power or 60Hz, a kind of solar energy and electric main dual power supply air-conditioning system were disclosed on December 22nd, 2004 as Chinese patent literature CN 2665593Y, it comprises air-conditioning system body and power supply thereof, power supply comprises solar panel and controller thereof, the inversion boosting transformer that is connected with power line with controller, with controller, the inversion boosting transformer, the control panel that batteries connects with lead, with the change-over switch that the output of electric main power supply and inversion boosting transformer is connected with lead, the output of change-over switch is connected with the air-conditioning system body.This solar energy and electric main dual power supply air-conditioning system at first are that direct current is stored in the battery with conversion of solar energy, to directly circulate during use is changed to alternating current and offers air-conditioning system through after boosting again, and the direct current 24～48V of this battery is transformed into civil power and need have passed through: DC/ high pressure DC inverter 11, high pressure DC/50 or 60Hz high pressure AC converter 13 totally two processes transform.These two transfer processes all can loss about 5% energy, thereby reduced the service efficiency of solar energy.
3) inside of the convertible frequency air-conditioner on the market 15 comprises AC/DC rectifier 8, direct current varied-frequency air conditioner circuit 7.After the external AC power supply is come in, need to use through direct current varied-frequency air conditioner circuit 7 power supplies of giving transducer air conditioning behind the AC/DC rectifier 8 of air-conditioner inside again.The air-conditioner power supply circuits of this mode are because the existence of AC/DC rectifier 8 has increased the loss of power supply.
Summary of the invention
Purpose of the present invention aim to provide a kind of simple and reasonable, cost of manufacture is low, energy-conserving and environment-protective, minimizing are to the transducer air conditioning of ambient influnence, flexible operation, Energy Efficiency Ratio height, band solar cell applied widely, to overcome weak point of the prior art.
A kind of transducer air conditioning by this purpose design with solar cell, comprise solar cell, convertible frequency air-conditioner, be connected solar powered controller and civil power between solar cell and the convertible frequency air-conditioner, convertible frequency air-conditioner comprises AC/DC rectifier and direct current varied-frequency air conditioner circuit, it is characterized in that solar powered controller comprises DC/ high pressure DC inverter and maximal power tracing device; The power output of maximal power tracing device monitoring solar cell, control DC/ high pressure DC inverter changes into high voltage direct current with the low-voltage DC of solar cell output, and directly the direct current varied-frequency air conditioner circuit is given in power supply.
Supply power to the direct current varied-frequency air conditioner circuit in parallel with solar powered controller behind the described civil power process AC/DC rectifier.
Described low-voltage DC is 15V～36V.
The present invention is according to the circuit control characteristics of DC frequency converting air-conditioner, adopt the transfer process of DC-DC, the low-voltage DC maximal efficiency of solar cell being exported by maximal power tracing device control DC/ high pressure DC inverter changes into high voltage direct current, reduce " high pressure DC/50 or 60Hz high pressure AC converter, AC/DC rectifier, accumulator cell charging and discharging manager " three intermediate link losses in transfer process in the past, improved efficient.
For fear of cause the situation that can not drive air-conditioning to take place inadequately because of the solar cell power output, and increased electric main, export high voltage direct current behind the AC/DC rectifier rectification by convertible frequency air-conditioner inside, because what DC frequency converting air-conditioner was supplied with in solar cell output also is direct current, and direct current itself does not have the problem of phase place compatibility, so can simply the use of DC frequency converting air-conditioner control circuit be supplied with in the direct current and the parallel connection of the direct current behind the commercial power rectification of solar cell output, thereby simplify the parallel operation circuit of civil power and solar-electricity, and reduced electronic switch, reduced cost of manufacture.
The present invention is specially adapted to the office factory site of turning on the aircondition a daytime, can make full use of the energy that solar cell produces.
The present invention meets the developing direction of national energy-conserving and environment-protective, have simple and reasonable, cost of manufacture is low, energy-conserving and environment-protective, minimizing are to ambient influnence, flexible operation, Energy Efficiency Ratio height and advantage of wide range of application.
Description of drawings
Fig. 1 is the block diagram of the air-conditioner of existing solar cell driving.
Fig. 2 is the block diagram of one embodiment of the invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Referring to Fig. 1, the transducer air conditioning of this band solar cell, comprise solar cell 1, convertible frequency air-conditioner 6, be connected solar powered controller 2 and civil power 5 between solar cell 1 and the convertible frequency air-conditioner 6, convertible frequency air-conditioner 6 comprises AC/DC rectifier 8 and direct current varied-frequency air conditioner circuit 7, and solar powered controller 2 comprises DC/ high pressure DC inverter 3 and maximal power tracing device 4; The power output of maximal power tracing device monitoring solar cell 1, control DC/ high pressure DC inverter 3 changes into high voltage direct current with the low-voltage DC of solar cell 1 output, and directly the direct current varied-frequency air conditioner circuit is given in power supply.Low-voltage DC is 15V～36V.
Civil power 5 supplies power to direct current varied-frequency air conditioner circuit 7 in parallel through AC/DC rectifier 8 backs and solar powered controller 2.Solar powered controller 2 built-in maximal power tracing devices 4 detect the voltage and current of solar cell 1 output, pass through tailor-made algorithm, the power of control DC/ high pressure DC inverter 3 conversion outputs, the direct current varied-frequency air conditioner circuit of supplying with in the convertible frequency air-conditioner 67 uses.
Solar cell 1 in the present embodiment uses common solar cell, and a solar panel is exported 24～30V usually, and 0～240W can the use in parallel of polylith plate.
Convertible frequency air-conditioner 6 in the present embodiment has two road power supply input ports, and the delivery outlet of solar powered controller 2 is connected to the first via input port of convertible frequency air-conditioner 6, and electric main 5 is connected to the second tunnel input port of convertible frequency air-conditioner 6.The direct current varied-frequency air conditioner circuit 7, the second tunnel that the first via is directly connected in the convertible frequency air-conditioner is to be connected to direct current varied-frequency air conditioner circuit 7 after having connected an AC/DC rectifier 8.Provide under the sufficient situation of electric weight at solar cell 1 at ordinary times, direct current varied-frequency air conditioner circuit 7 in the convertible frequency air-conditioner 6 is by solar powered controller 2 power supplies, provide under the not enough situation of electric weight at solar cell 1, insufficient section is provided by civil power 5, uses with the direct current varied-frequency air conditioner circuit that satisfies in the convertible frequency air-conditioner 6.Make full use of the electric weight that solar energy produces to reach, reduce consumption civil power.

Claims (3)

1. transducer air conditioning with solar cell, comprise solar cell (1), convertible frequency air-conditioner (6), be connected solar powered controller (2) and civil power (5) between solar cell and the convertible frequency air-conditioner, convertible frequency air-conditioner comprises AC/DC rectifier (8) and direct current varied-frequency air conditioner circuit (7), it is characterized in that solar powered controller comprises DC/ high pressure DC inverter (3) and maximal power tracing device (4); The power output of maximal power tracing device monitoring solar cell, control DC/ high pressure DC inverter changes into high voltage direct current with the low-voltage DC of solar cell output, and directly the direct current varied-frequency air conditioner circuit is given in power supply.
2. the transducer air conditioning of band solar cell according to claim 1 is characterized in that described civil power (5) supplies power to direct current varied-frequency air conditioner circuit (7) in parallel through AC/DC rectifier (8) back and solar powered controller (2).
3. the transducer air conditioning of band solar cell according to claim 1 is characterized in that described low-voltage DC is 15V～36V.
CN201019050034A 2010-02-03 2010-02-03 Frequency-conversion air conditioner with solar cell Pending CN101806490A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201019050034A CN101806490A (en) 2010-02-03 2010-02-03 Frequency-conversion air conditioner with solar cell
CN201010230977.4A CN101917054B (en) 2010-02-03 2010-06-30 With the direct current varied-frequency air conditioner of solar cell
PCT/CN2010/078619 WO2011095020A1 (en) 2010-02-03 2010-11-11 Direct current variable-frequency air conditioner with solar cell

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CN102003769A (en) * 2010-11-05 2011-04-06 广东美的电器股份有限公司 Method for controlling solar air-conditioning system
WO2011095020A1 (en) * 2010-02-03 2011-08-11 广东美的电器股份有限公司 Direct current variable-frequency air conditioner with solar cell
CN102455030A (en) * 2010-10-25 2012-05-16 阳光动力有限公司 Vehicle-mounted solar air conditioning system and automobile comprising same
CN102611094A (en) * 2011-01-24 2012-07-25 罗基研究公司 Photovoltaic power source for electromechanical 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
CN103647537A (en) * 2013-09-10 2014-03-19 许继电气股份有限公司 Energy taking and transmitting device and high-voltage electronic direct-current circuit breaker
CN103838339A (en) * 2012-11-21 2014-06-04 华硕电脑股份有限公司 Power integration module and electronic device
CN104135027A (en) * 2014-07-11 2014-11-05 珠海格力电器股份有限公司 Photovoltaic variable frequency air conditioner and power supply control method thereof
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CN105490555A (en) * 2016-01-14 2016-04-13 合肥天鹅制冷科技有限公司 Power supply converter device
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CN102455030B (en) * 2010-10-25 2015-11-25 阳光动力有限公司 Vehicle-mounted solar air conditioning system and automobile comprising same
CN102455030A (en) * 2010-10-25 2012-05-16 阳光动力有限公司 Vehicle-mounted solar air conditioning system and automobile comprising same
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CN103838339B (en) * 2012-11-21 2016-08-17 华硕电脑股份有限公司 Power integration module and electronic installation
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
CN103023127B (en) * 2012-12-28 2014-12-31 劲达技术(河源)有限公司 Solar air conditioner and power supply method thereof
CN103647537A (en) * 2013-09-10 2014-03-19 许继电气股份有限公司 Energy taking and transmitting device and high-voltage electronic direct-current circuit breaker
CN104135027A (en) * 2014-07-11 2014-11-05 珠海格力电器股份有限公司 Photovoltaic variable frequency air conditioner and power supply control method thereof
CN104135027B (en) * 2014-07-11 2016-09-14 珠海格力电器股份有限公司 Photovoltaic variable frequency air conditioner and power supply control method thereof
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CN106300622A (en) * 2016-10-27 2017-01-04 广东美的制冷设备有限公司 Solar air conditioner system and device
CN111219820A (en) * 2020-01-19 2020-06-02 山东华宇工学院 Household air conditioner hybrid energy control device and air conditioner
CN111486507A (en) * 2020-04-28 2020-08-04 宁波奥克斯电气股份有限公司 Air conditioning system and operation control method thereof

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