US20060144064A1 - Airconditioning generation system capable of solving unbalanced phase and method for the same - Google Patents

Airconditioning generation system capable of solving unbalanced phase and method for the same Download PDF

Info

Publication number
US20060144064A1
US20060144064A1 US11/292,085 US29208505A US2006144064A1 US 20060144064 A1 US20060144064 A1 US 20060144064A1 US 29208505 A US29208505 A US 29208505A US 2006144064 A1 US2006144064 A1 US 2006144064A1
Authority
US
United States
Prior art keywords
phase
power
indoor
airconditioning
outdoor units
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.)
Abandoned
Application number
US11/292,085
Other languages
English (en)
Inventor
Yeong Choe
Eun Cho
Jae Lee
Baik Chung
Yun Ryu
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, BAIK YOUNG, CHO, EUN JUN, CHOE, YEONG SEOP, LEE, JAE WON, RYU, YUN HO
Publication of US20060144064A1 publication Critical patent/US20060144064A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/60—Energy consumption

Definitions

  • the present invention relates to an airconditioning generation system capable of solving an unbalanced phase and a method for the same, and more particularly to an airconditioning generation system capable of solving an unbalanced phase and a method for the same, which can prevent the occurrence of an unbalanced phase of a power-supply signal applied to a plurality of outdoor units connected to a plurality of indoor units due to a difference in load.
  • FIG. 1 is a structural diagram illustrating a conventional airconditioning generation system.
  • the airconditioning generation system includes a plurality of indoor units 11 , 12 , 13 , 21 , 22 , 31 , 32 , and 33 installed in individual rooms to cool or heat air in the rooms; a plurality of outdoor units 10 , 20 , and 30 connected to individual indoor units; and a generator 40 for generating a three-phase power-supply signal, and providing the outdoor units 10 , 20 , and 30 with the three-phase power-supply signal.
  • the airconditioning generation system further includes a molded-case circuit breaker 50 for detecting current values of individual phases of the three-phase power-supply signal generated from the generator 40 , and preventing individual outdoor units 10 , 20 , and 30 from being powered on when an unbalanced phase occurs in the three-phase power-supply signal.
  • the outdoor units 10 , 20 , and 30 may be driven by the three-phase power-supply signal generated from the generator 40
  • the indoor units 11 , 12 , 13 , 21 , 22 , 31 , 32 , and 33 are driven by a single-phase power-supply signal, such that the indoor units 11 , 12 , 13 , 21 , 22 , 31 , 32 , and 33 are connected to a single-phase power-supply terminal from among individual power-supply terminals of the outdoor units 10 , 20 , and 30 , and then receive a necessary power-supply signal via the single-phase power-supply terminal.
  • the molded-case circuit breaker 50 connected to the generator 40 prevents the power-supply signal from being applied to individual outdoor units 10 , 20 , and 30 .
  • the airconditioning generation system acts as a three-phase four-line system, receives a three-phase power-supply signal composed of an R-phase power-supply signal, an S-phase power-supply signal, and a T-phase power-supply signal, and includes a neural(N)-line connected to the R/S/T-phase power-supply signals.
  • the R-phase power-supply signal, the S-phase power-supply signal, and the T-phase power-supply signal have a phase difference of 120°, and establish phase equilibrium therebetween.
  • the R/S/T-phase power-supply signals generally establish the above-mentioned phase equilibrium, such that a current signal is not applied to the N line.
  • loads connected to individual phase power-supply signals have different magnitudes, there is an unexpected difference in an amount of a current signal applied to individual phase power-supply signals, such that the above-mentioned phase equilibrium is broken, and the current signal flows in the N line.
  • the above-mentioned state is called an unbalanced phase state. If the current signal flows in the N line as described above, a potential of the N line is increased such that a controller for controlling the airconditioning generation system may malfunction.
  • the molded-case circuit breaker 50 detects the value of a current signal flowing in the N line using an internal sensor. If the molded-case circuit breaker 50 detects the value of the current signal, it determines the occurrence of an unbalanced phase, such that it blocks a power-supply signal from being transmitted from the generator 40 to individual outdoor units 10 , 20 , and 30 .
  • the molded-case circuit breaker 50 for use in the above-mentioned conventional airconditioning generation system generally aims to protect the generator 40 from danger, such that it immediately blocks a power-supply signal from being applied to all of the indoor and outdoor units if an unbalanced phase occurs by one of the outdoor units.
  • the power-supply signal is not applied to the indoor and outdoor units, a user must manually adjust individual loads of the indoor units 11 , 12 , 13 , 21 , 22 , 31 , 32 , and 33 , or the outdoor units 10 , 20 , and 30 to remove the unbalanced phase.
  • the user cannot use the above-mentioned airconditioning generation system at all locations of a building or factory equipped with the system until the unbalanced phase is removed, resulting in greater inconvenience of the user and reduction of product reliability.
  • the present invention has been made in view of the above problems, and it is an object of the invention to provide an airconditioning generation system capable of solving an unbalanced phase and a method for the same, which can prevent the occurrence of an unbalanced phase in a generation system capable of providing an airconditioner with a three-phase power-supply signal, such that they prevent the occurrence of a malfunction or damage of a manufactured product due to the unbalanced phase, and increase product reliability.
  • an airconditioning generation system capable of solving an unbalanced phase, comprising: a plurality of indoor units; and a plurality of outdoor units, wherein power values of individual-phase driving power-supply signals consumed by the indoor and outdoor units are summed, and a power-supply wiring structure of some parts of the indoor and outdoor units is automatically changed to another wiring structure when there is a difference in power consumption values of individual phases, resulting in three-phase equilibrium.
  • the distribution unit includes: a sensor for detecting a current signal flowing in a wiring structure which receives the power-supply signal from the generator and transmits the received power-supply signal to the indoor and outdoor units; and a distribution controller for calculating the sum of individual-phase power consumption of the indoor and outdoor units according to the output current value of the sensor, and changing the wiring structure to another wiring structure when there is a difference in the sum of the individual-phase power consumption.
  • the distribution unit includes: a communication unit for communicating with the outdoor units, and receiving power consumption data of the indoor and outdoor units from the outdoor units; and a distribution controller for calculating the sum of individual-phase power consumption of the indoor and outdoor units, and changing a wiring structure capable of transmitting a power-supply signal from the generator to the indoor and outdoor units when there is a difference in the sum of the individual-phase power consumption.
  • a method for solving an unbalanced phase in an airconditioning generation system comprising the steps of: a) calculating power consumption of indoor and outdoor units; b) calculating the sum of the calculated power consumption values to determine the presence or absence of the unbalanced phase; and c) changing a wiring structure of a power-supply signal supplied to the indoor or outdoor units when the presence of the unbalanced phase is determined.
  • the airconditioning generation system includes a distribution unit capable of detecting individual-phase power values consumed by the indoor units, and changing a wiring structure of a phase power-supply signal transmitted from the generator to the outdoor units. If the unbalanced phase occurs in the three-phase power-supply signal, the airconditioning generation system automatically solves the unbalanced phase, such that it prevents a product from being damaged, and increases product reliability.
  • the airconditioning generation system changes a wiring structure of individual-phase power-supply signals to establish three-phase equilibrium, improves power factor, such that it reduces power consumption of an overall system and costs thereof.
  • FIG. 1 is a structural diagram illustrating a conventional airconditioning generation system
  • FIG. 2 is a structural diagram illustrating an airconditioning generation system in accordance with a first preferred embodiment of the present invention
  • FIG. 3 is a flow chart illustrating a method for operating the airconditioning generation system shown in FIG. 2 in accordance with the first preferred embodiment of the present invention
  • FIG. 4 is a structural diagram illustrating an airconditioning generation system in accordance with a second preferred embodiment of the present invention.
  • FIG. 5 is a flow chart illustrating a method for operating the airconditioning generation system shown in FIG. 4 in accordance with the second preferred embodiment of the present invention.
  • an airconditioning generation system capable of solving an unbalanced phase according to the present invention includes 3 outdoor units and 8 indoor units, but it is not limited to this example, and is applicable to other examples without limiting the number of outdoor or indoor units connected to a generator.
  • FIG. 2 is a structural diagram illustrating an airconditioning generation system in accordance with a first preferred embodiment of the present invention.
  • the airconditioning generation system in accordance with the first preferred embodiment of the present invention includes 8 indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 ; 3 outdoor units 110 , 120 , and 130 connected to the eight indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 ; a generator 70 for generating a drive power-supply signal of the indoor and outdoor units by driving an engine; and a distribution unit 80 for dividing a three-phase power-supply signal generated from the generator 70 into individual phase signals, and providing the outdoor or indoor units with the divided phase signals.
  • the airconditioning generation system may further include a molded-case circuit breaker 90 connected to the generator 70 and the distribution unit 80 . If an unbalanced phase occurs irrespective of operations of the distribution unit 80 , the molded-case circuit breaker 90 blocks individual outdoor units 110 , 120 , and 130 from receiving a power-supply signal.
  • the first outdoor unit 110 is connected to three indoor units 111 , 112 , and 113
  • the second outdoor unit 120 is connected to two indoor units 121 and 122
  • the third outdoor unit 130 is connected to three indoor units 131 and 132 , such that they adjust an amount of a refrigerant flowing in individual indoor units.
  • the three-phase power-supply signal generated from the generator 70 is divided into R-, S-, and T-phase signals via the distribution unit 80 , and is applied to individual outdoor units 110 , 120 , and 130 .
  • Individual outdoor units transmit the R/S/T-phase power-supply signals to individual indoor units.
  • the generator 70 may be implemented with a general three-phase voltage generator capable of providing the indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 and the outdoor units 110 , 120 , and 130 with a power-supply signal.
  • a cogeneration system may be used as the generator 70 .
  • the cogeneration system generates electricity using a cogeneration generator, and uses waste heat of the cogeneration generator.
  • the cogeneration system includes an engine, and a cogeneration generator for generating power using rotating force of the engine, and further includes a heat provider.
  • the heat provider receives either waste heat of a cooling water of the engine or other waste heat of discharge gas of the engine, and transmits the received heat to a target such as an airconditioner.
  • the power generated from the cogeneration generator is used to operate a variety of electric devices such as an electric lamp, and an airconditioner, etc.
  • the heat provider receives waste heat of the cooling water of the engine or other waste heat of discharge gas of the engine, such that it performs a hot-water supply operation using the received waste heat or provides the airconditioner with the received waste heat.
  • the distribution unit 80 includes a distribution controller 82 , which divides the three-phase power-supply signal received from the generator 70 into individual phase signals, transmits the divided phase signals to the outdoor units 110 , 120 , and 130 and the indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 , and controls a wiring board to which the three-phase power-supply signal or a single-phase power-supply signal is applied.
  • a distribution controller 82 which divides the three-phase power-supply signal received from the generator 70 into individual phase signals, transmits the divided phase signals to the outdoor units 110 , 120 , and 130 and the indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 , and controls a wiring board to which the three-phase power-supply signal or a single-phase power-supply signal is applied.
  • the distribution unit 80 further includes a sensor 81 for detecting the value of a current signal flowing in the wiring structure capable of providing the indoor and outdoor units with a power-supply signal, such that the distribution controller 82 controls the wiring structure according to the output value of the sensor 81 .
  • the distribution controller 82 receives the value of a current signal supplied to individual indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 and individual outdoor units 110 , 120 , and 130 from the sensor 81 , and calculates the value of a power signal consumed by the indoor and outdoor units in individual phase signals according to the received current value, and controls the wiring structure to establish phase equilibrium in individual phase signals according to the calculated power value.
  • FIG. 3 is a flow chart illustrating a method for solving an unbalanced phase of the airconditioning generation system in accordance with the first preferred embodiment of the present invention. The method for solving the unbalanced phase of the airconditioning generation system will hereinafter be described with reference to FIG. 3 .
  • an engine of the generator 70 is driven to generate a power-supply signal at step S 1 .
  • the power-supply signal is transmitted to the distribution unit 80 connected to the generator 70 , and is supplied to the outdoor units.
  • the power-supply signal is divided into individual phase signals, such that it is supplied to the indoor units as a single-phase power-supply signal.
  • the distribution unit 80 detects the value of a current signal of the power-supply signal transmitted to individual indoor and outdoor units using the sensor 81 , calculates the value of consumed power on the basis of the detected current value, and sums the calculated power value in individual phases at step S 2 .
  • each of the indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 connected to the outdoor units 110 , 120 , and 130 consumes predetermined power of 5HP
  • each outdoor unit consumes predetermined power of 10HP
  • power consumed by the first outdoor unit 110 and the indoor units 111 , 112 , and 113 connected to the first outdoor unit 110 is an R-phase signal having a predetermined power value of 25HP
  • power consumed by the second outdoor unit 120 and the indoor units 121 , 122 , and 123 connected to the second outdoor unit 120 is an S-phase signal having a predetermined power value of 20HP
  • power consumed by the third outdoor unit 130 and the indoor units 131 , 132 , and 133 connected to the third outdoor unit 130 is a T-phase signal having a predetermined power value of 25HP.
  • the distribution unit 80 detects the value of a current signal of a wiring board receiving the R/S/T-phase power-supply signals, such that it can determine how much R/S/T-phase power-supply signals are supplied to individual indoor and outdoor units in the same manner as in the above-mentioned power consumption calculation method.
  • the distribution controller determines the occurrence of the unbalanced phase, and calculates an amount of power to be consumed by individual phase power-supply signals to establish phase equilibrium at steps S 3 ⁇ S 5 .
  • a wiring structure of some parts of the indoor or outdoor units is changed according to the amount of the calculated power to establish the phase equilibrium at step S 6 .
  • the R-phase signal consumes the power of 25HP
  • the S-phase signal consumes the power of 20HP
  • the T-phase signal consumes the power of 25HP according to the calculated power consumption of individual phases
  • the power consumed by the S-phase signal is relatively less than those of the R-phase and T-phase signals, resulting in the occurrence of an unbalanced phase.
  • Each of the R/S/T-phase signals must consume power of 70HP/3 to establish the phase equilibrium, such that a wiring structure is controlled to provide the first and third outdoor units with the S-phase power-supply signal suitable for the power of 70HP/3.
  • the distribution unit 80 repeatedly checks load of individual phases after the phase equilibrium is maintained, and changes the wiring structure to establish the phase equilibrium.
  • An airconditioning generation system does not mount the sensor to the distribution unit, and calculates the value of power consumption of individual phases by allowing the distribution unit to communicate with the outdoor units, differently from the above-mentioned airconditioning generation system according to the first preferred embodiment in which the sensor is mounted to the distribution unit.
  • FIG. 4 is a structural diagram illustrating the airconditioning generation system in accordance with a second preferred embodiment of the present invention.
  • a plurality of indoor units 111 , 112 , 113 , 121 , 122 , 131 , 132 , and 133 are connected to outdoor units 10 , 20 , and 30 , and communicate with the outdoor units 10 , 20 , and 30 , such that information associated with power consumption or load are communicated between the indoor units and the outdoor units.
  • the indoor units are connected to the outdoor units via a cable, and communicate with the outdoor units according to an RS-485 communication scheme or a power-line communication scheme, such that a variety of wired/wireless communication schemes can be established between the indoor units and the outdoor units to implement an object of the present invention.
  • the distribution unit 80 ′ divides a three-phase power-supply signal generated from the generator 70 into individual phase signals, and transmits the divided phase signals to the indoor and outdoor units.
  • the distribution unit 80 ′ includes a communication unit 83 communicating with the outdoor units 110 , 120 , and 130 , and a distribution controller 82 ′ for determining the presence or absence of an unbalanced phase on the basis of transmission/reception data of the communication unit 83 , and changing a wiring structure according to the determined result associated with the unbalanced phase.
  • the airconditioning system composed of the indoor and outdoor units includes a plurality of outdoor units
  • at least one outdoor unit is determined to be a master
  • the remaining outdoor units are determined to be slaves, such that the slave outdoor units can be centrally controlled according to operation commands of the master outdoor unit.
  • the first outdoor unit 110 is determined to be the master outdoor unit
  • the second and third outdoor units 120 and 130 are determined to be the slave outdoor units.
  • the indoor unit 111 is connected to the outdoor unit 110 according to an RS-485 communication scheme, communicates with the outdoor unit 110 , and is controlled by the outdoor unit 110 .
  • Other indoor units are connected to the indoor unit 111 and the outdoor unit 110 according to the RS-485 communication scheme, and are controlled by the master outdoor unit 110 .
  • FIG. 5 is a flow chart illustrating a method for solving an unbalanced phase of the airconditioning generation system shown in FIG. 4 in accordance with the second preferred embodiment of the present invention.
  • an engine of a generator is driven to generate a power-supply signal.
  • the power-supply signal is transmitted to a distribution unit connected to the generator, and is supplied to the outdoor units. Also, the power-supply signal is divided into individual phase signals, such that it is supplied to indoor units as a single-phase power-supply signal at step S 11 .
  • Individual indoor units or slave outdoor units communicate with a master outdoor unit, and transmits their power consumption data to the master outdoor unit at step S 12 .
  • the distribution unit communicates with the master outdoor unit, such that it receives power consumption data of individual indoor and outdoor units.
  • the distribution unit reads the power consumption data, and recognizes the value of power of a three-phase or single-phase power-supply signal consumed by individual indoor and outdoor units at step S 13 .
  • the power values recognized in individual phases are summed, and the magnitudes of the power values are compared with each other, such that the presence or absence of an unbalanced phase can be determined according to the comparison result at step S 14 .
  • the distribution unit changes a wiring structure of the outdoor units or some parts of the outdoor units according to the calculated power value in the same manner as in the first preferred embodiment of the present invention, such that phase equilibrium can be established at steps S 15 ⁇ S 16 .
  • the distribution unit repeatedly checks load of individual phases after the phase equilibrium is maintained, and changes a wiring structure to establish the phase equilibrium.
  • a wiring structure for providing the outdoor units with a power-supply signal is changed to another wiring structure in which power of 70HP/3 is consumed by individual phase signals.
  • the S-phase power-supply signal designed to provide the second outdoor unit with a power-supply signal is also applied to the first and third outdoor units, such that power consumption of the S-phase power-supply signal is increased and at the same time other power consumption of the R/T-phase power-supply signals is reduced, resulting in phase equilibrium in three phases.
  • an airconditioning generation system and method capable of solving an unbalanced phase includes: one or more indoor units; one or more outdoor units for providing the indoor units with a single-phase power-supply signal; a generator for providing the outdoor units with a power-supply signal; and a distribution unit for checking individual-phase power values consumed by the indoor units, changing a phase of the power-supply signal transmitted from the generator to the outdoor units according to the checked power values, and establishing phase equilibrium in three phases. Therefore, if the unbalanced phase of a three-phase power-supply signal occurs when the power-supply signal is supplied to an airconditioner, the present invention solves the unbalanced phase, such that it prevents a product from being damaged and increases product reliability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Air Conditioning Control Device (AREA)
US11/292,085 2004-12-03 2005-12-02 Airconditioning generation system capable of solving unbalanced phase and method for the same Abandoned US20060144064A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2004-101255 2004-12-03
KR1020040101255A KR100707419B1 (ko) 2004-12-03 2004-12-03 상불평형 해소가 가능한 공기조화기 발전시스템 및 그상불평형 해소방법

Publications (1)

Publication Number Publication Date
US20060144064A1 true US20060144064A1 (en) 2006-07-06

Family

ID=35985369

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/292,085 Abandoned US20060144064A1 (en) 2004-12-03 2005-12-02 Airconditioning generation system capable of solving unbalanced phase and method for the same

Country Status (5)

Country Link
US (1) US20060144064A1 (de)
EP (1) EP1666807B1 (de)
KR (1) KR100707419B1 (de)
CN (1) CN1808828A (de)
DE (1) DE602005017458D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080142607A1 (en) * 2006-12-19 2008-06-19 Sanyo Electric Co., Ltd. Air conditioning system and method of controlling the same
US11428430B2 (en) * 2018-04-13 2022-08-30 Gree Electric Appliances, Inc. Of Zhuhai Air conditioning system having multiple outdoor units and multiple indoor units, method and device for operating air conditioning system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101030562B1 (ko) 2010-06-20 2011-04-21 주식회사 한일계전 배전반 상불평형제거 병렬운전 자동제어 콘트롤러
CN110601224B (zh) * 2019-09-03 2023-05-23 华南理工大学 基于家庭温控负荷的低压台区电压三相不平衡调节方法

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155880A (en) * 1960-01-27 1964-11-03 Louis E Salina Phase failure protection for polyphase motors
US4078393A (en) * 1976-01-09 1978-03-14 Borg-Warner Corporation Control system for controlling the operation of a three-phase load
US4248054A (en) * 1979-02-14 1981-02-03 Westinghouse Electric Corp. Refrigeration system with load balancing control for at least three centrifugal compressors
US4363065A (en) * 1979-02-08 1982-12-07 Uohiko Hasegawa Interphase unbalance detector for AC load circuit
US4380909A (en) * 1981-07-17 1983-04-26 Chevron Research Company Method and apparatus for co-generation of electrical power and absorption-type heat pump air conditioning
US4433276A (en) * 1980-10-23 1984-02-21 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Three phase power factor controller
US4453122A (en) * 1981-10-19 1984-06-05 Johnson Ewing A Electrical balancing control for three-phase loads
US4557114A (en) * 1983-06-15 1985-12-10 Hitachi, Ltd. Control circuit for air conditioner
US4802053A (en) * 1987-03-11 1989-01-31 Square D Company Control circuitry including phase failure relay
US4866295A (en) * 1987-04-16 1989-09-12 Case Group P.L.C. Power supply control systems
US5062278A (en) * 1990-02-23 1991-11-05 Kabushiki Kaisha Toshiba Air-conditioning apparatus including an indoor unit and an outdoor unit having its compressor driven by a three-phase AC power supply
US5467604A (en) * 1994-02-18 1995-11-21 Sanyo Electric Co., Ltd. Multiroom air conditioner and driving method therefor
US5652505A (en) * 1995-12-18 1997-07-29 Neilsen-Kuljian, Inc. Power consumption measurement device for a multiphase alternating current system
US6614217B2 (en) * 2000-08-10 2003-09-02 Sanyo Electronic Co., Ltd. Power supply negative phase detecting circuit
US6643690B2 (en) * 1998-12-29 2003-11-04 Citrix Systems, Inc. Apparatus and method for determining a program neighborhood for a client node in a client-server network
US20050005619A1 (en) * 2003-04-15 2005-01-13 Yasuyuki Kojima Air conditioning system
US7126305B2 (en) * 2004-06-21 2006-10-24 Fujitsu Ten Limited Apparatus for correcting current value of three-phase electric motor and correcting method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566294A (en) * 1978-11-14 1980-05-19 Fuji Electric Co Ltd Load-balance operation circuit
JPS58136931A (ja) * 1982-02-05 1983-08-15 Hitachi Ltd 空気調和機の制御方法
JP3189398B2 (ja) * 1992-07-14 2001-07-16 株式会社明電舎 不平衡補償付灯動共用発電装置
JPH06347085A (ja) * 1993-06-07 1994-12-20 Sanyo Electric Co Ltd 空気調和機の電源接続構造
JP3265803B2 (ja) * 1994-03-18 2002-03-18 株式会社日立製作所 多室空気調和機及びその制御方法
JPH099487A (ja) * 1995-06-23 1997-01-10 Sanyo Electric Co Ltd 空気調和装置の制御装置
KR0181399B1 (ko) * 1996-11-12 1999-05-15 삼성전자주식회사 전압형 pwm 컨버터의 불평형 전원 전압 제어 장치 및 방법
US5995347A (en) * 1997-05-09 1999-11-30 Texas Instruments Incorporated Method and apparatus for multi-function electronic motor protection
KR20000012189A (ko) * 1999-06-10 2000-03-06 이기표, 박기주 지능형모터제어방법
KR100388655B1 (ko) * 2001-03-05 2003-06-25 삼성전자주식회사 공기조화기의 제어 시스템 및 그 제어방법
KR200279274Y1 (ko) * 2002-03-18 2002-06-24 박세환 전류 감시기능 표시장치

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155880A (en) * 1960-01-27 1964-11-03 Louis E Salina Phase failure protection for polyphase motors
US4078393A (en) * 1976-01-09 1978-03-14 Borg-Warner Corporation Control system for controlling the operation of a three-phase load
US4363065A (en) * 1979-02-08 1982-12-07 Uohiko Hasegawa Interphase unbalance detector for AC load circuit
US4248054A (en) * 1979-02-14 1981-02-03 Westinghouse Electric Corp. Refrigeration system with load balancing control for at least three centrifugal compressors
US4433276A (en) * 1980-10-23 1984-02-21 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Three phase power factor controller
US4380909A (en) * 1981-07-17 1983-04-26 Chevron Research Company Method and apparatus for co-generation of electrical power and absorption-type heat pump air conditioning
US4453122A (en) * 1981-10-19 1984-06-05 Johnson Ewing A Electrical balancing control for three-phase loads
US4557114A (en) * 1983-06-15 1985-12-10 Hitachi, Ltd. Control circuit for air conditioner
US4802053A (en) * 1987-03-11 1989-01-31 Square D Company Control circuitry including phase failure relay
US4866295A (en) * 1987-04-16 1989-09-12 Case Group P.L.C. Power supply control systems
US5062278A (en) * 1990-02-23 1991-11-05 Kabushiki Kaisha Toshiba Air-conditioning apparatus including an indoor unit and an outdoor unit having its compressor driven by a three-phase AC power supply
US5467604A (en) * 1994-02-18 1995-11-21 Sanyo Electric Co., Ltd. Multiroom air conditioner and driving method therefor
US5652505A (en) * 1995-12-18 1997-07-29 Neilsen-Kuljian, Inc. Power consumption measurement device for a multiphase alternating current system
US6643690B2 (en) * 1998-12-29 2003-11-04 Citrix Systems, Inc. Apparatus and method for determining a program neighborhood for a client node in a client-server network
US6614217B2 (en) * 2000-08-10 2003-09-02 Sanyo Electronic Co., Ltd. Power supply negative phase detecting circuit
US20050005619A1 (en) * 2003-04-15 2005-01-13 Yasuyuki Kojima Air conditioning system
US7126305B2 (en) * 2004-06-21 2006-10-24 Fujitsu Ten Limited Apparatus for correcting current value of three-phase electric motor and correcting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080142607A1 (en) * 2006-12-19 2008-06-19 Sanyo Electric Co., Ltd. Air conditioning system and method of controlling the same
US11428430B2 (en) * 2018-04-13 2022-08-30 Gree Electric Appliances, Inc. Of Zhuhai Air conditioning system having multiple outdoor units and multiple indoor units, method and device for operating air conditioning system

Also Published As

Publication number Publication date
CN1808828A (zh) 2006-07-26
DE602005017458D1 (de) 2009-12-17
EP1666807A1 (de) 2006-06-07
KR20060062422A (ko) 2006-06-12
EP1666807B1 (de) 2009-11-04
KR100707419B1 (ko) 2007-04-13

Similar Documents

Publication Publication Date Title
JP4656152B2 (ja) 電池システム
JP4656150B2 (ja) 電池システムおよびリチウム電池セル制御用集積回路
US7739882B2 (en) Variable speed control
WO2014050985A1 (ja) 家電機器遠隔監視システム
KR20130030405A (ko) 공기 조화기
JP2002098720A (ja) 電力供給系における電力モニターシステム
US20220021234A1 (en) Smart switching panel for secondary power supply
JPH09294334A (ja) 系統連系発電機
CN110207342A (zh) 室内机、空调机组的控制电路、控制方法和可读存储介质
JP6452331B2 (ja) 発電システムの制御方法、発電システム、及び発電装置
EP1666807B1 (de) Klimaerzeugungsanlage zum Ausgleichen einer nicht balancierten Phase und Verfahren dafür
KR102024091B1 (ko) 공기조화기
JPH09294335A (ja) 系統連系発電機
JP6771170B2 (ja) 蓄電システム、蓄電装置、および蓄電装置の運転方法
US11083112B2 (en) Three-phase electronic control unit for enclosure air conditioners
KR20180040878A (ko) 공기조화기의 전원 역상 검출 장치 및 방법
JP3148321B2 (ja) 空気調和機
JPS63290342A (ja) 空気調和機の集中制御装置
JPH08313029A (ja) 空気調和機の遠隔制御装置
KR20090062942A (ko) 전력량계 통신 에러시 멀티에어컨 시스템 보호 방법 및장치
KR20050105645A (ko) 역결상 감지회로 및 그 동작방법
KR20190012520A (ko) 공기조화기
JP2013142518A (ja) 空気調和機のインターフェース装置、及び空気調和システム
JPH062916A (ja) 空気調和機の総合電流制御システム
JPH0237244A (ja) 空気調和機の集中制御装置およびその集中制御方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHOE, YEONG SEOP;CHO, EUN JUN;LEE, JAE WON;AND OTHERS;REEL/FRAME:017672/0504;SIGNING DATES FROM 20060116 TO 20060117

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION