KR20110003089A - Motor controller of air conditioner using distributed power - Google Patents

Motor controller of air conditioner using distributed power Download PDF

Info

Publication number
KR20110003089A
KR20110003089A KR1020090060692A KR20090060692A KR20110003089A KR 20110003089 A KR20110003089 A KR 20110003089A KR 1020090060692 A KR1020090060692 A KR 1020090060692A KR 20090060692 A KR20090060692 A KR 20090060692A KR 20110003089 A KR20110003089 A KR 20110003089A
Authority
KR
South Korea
Prior art keywords
power
commercial
air conditioner
converter
motor
Prior art date
Application number
KR1020090060692A
Other languages
Korean (ko)
Inventor
김성일
Original Assignee
엘지전자 주식회사
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020090060692A priority Critical patent/KR20110003089A/en
Publication of KR20110003089A publication Critical patent/KR20110003089A/en

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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inverter Devices (AREA)
  • Air Conditioning Control Device (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: A control device of motor of the air-conditioner using the distributed power which controls the harmonic current by driving the motor for compressor is provided to convert the drive alternative power having the arbitrary voltage and frequency for the commercial AC source. CONSTITUTION: A dc/ac converter(170) converts the DC power supply inputted from outside into the AC power source. The compressor motor being run by changing into the drive alternate power having the matrix converter(120) is the arbitrary voltage of the frequency for the commercial AC source or the AC power source.

Description

Motor controller of air conditioner using distributed power source {Motor controller of air conditioner using distributed power}

The present invention relates to a motor control apparatus of an air conditioner using a distributed power supply, converts a DC power input from the outside to supply AC power to the system, or air conditioning using a distributed power supply capable of driving a compressor motor It relates to an electric motor control device of the machine.

An air conditioner is a device that is disposed in a room, a living room, an office, or a business store to adjust a temperature, humidity, cleanliness, and airflow of an air to maintain a comfortable indoor environment.

Air conditioners are generally divided into one-piece and separate types. The integrated type and the separate type are functionally the same, but the integrated type integrates the functions of cooling and heat dissipation to install a hole in the wall of the house or hang the device on the window. On the side, an outdoor unit that performs heat dissipation and compression functions was installed, and two separate devices were connected by refrigerant pipes.

In the air conditioner, an electric motor is used for a compressor or the like, and an electric motor control apparatus for an air conditioner for driving the same is used.

In general, the motor control apparatus of an air conditioner converts a commercial AC power into a DC power through a converter, and converts the AC power of a predetermined frequency into an AC power using a DC power converted through an inverter to drive a compressor motor.

Recently, the motor control apparatus of an air conditioner converts a commercial AC power directly into an AC power to drive a motor for a compressor, or, in the event of a commercial AC power abnormality, receives an external DC power to drive the motor for a compressor. Is under study.

An object of the present invention is to provide an electric motor control apparatus for an air conditioner using a distributed power supply capable of supplying AC power to a system by converting DC power input from the outside or driving a motor for a compressor.

The electric motor control apparatus of the air conditioner using the distributed power supply of the present invention is a bidirectional dc to convert the DC power input from the outside into an AC power supply to the system, or to convert the AC power supplied from the system to the DC power supply A matrix converter for driving a motor for a compressor by converting a power source of an ac / ac converter, a commercial AC power source or the AC power into a drive AC power source having an arbitrary voltage or frequency, and the commercial AC power source is input to the matrix converter. And a relay configured to form a first pass so as to form a second pass or to form a second pass so that the AC power is input to the matrix converter.

The motor control apparatus of the air conditioner using the distributed power supply of the present invention converts a DC power input from the outside into an AC power by using a bidirectional dc / ac converter, and supplies AC power to the system, or a motor for a compressor. By driving, it suppresses harmonic currents and generates economic benefits.

In addition, by using the matrix converter, it is possible to drive a compressor motor by converting a commercial AC power source or an AC power source into a drive AC power source having an arbitrary voltage and frequency.

In addition, by using a clamp circuit and an inverter connected in parallel with the matrix converter, the smooth DC power using commercial AC power, AC power, or AC power can be converted into smooth AC power to drive a plurality of fan motors.

In addition, by using a DC power source generated from various energy sources, energy can be efficiently used.

Hereinafter, an air conditioner using a distributed power source according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an air conditioner according to a first embodiment of the present invention.

Referring to FIG. 1, the air conditioner 50 includes a compressor 2, an outdoor heat exchanger 4, a four-way valve 10, an accumulator 3, an expansion valve 6, an indoor heat exchanger 8, and the like. It includes.

The air conditioner 50 may be configured as a cooler for cooling the room, or may be configured as a heat pump for cooling or heating the room.

In the case where the air conditioner 50 is constituted by a heat pump type, the outdoor heat exchanger 4 acts as a condenser during the cooling operation and as an evaporator during the heating operation. The indoor heat exchanger 8 functions as an evaporator in the cooling operation and a condenser in the heating operation.

The compressor 2 compresses the low temperature low pressure gaseous refrigerant into the high temperature high pressure gaseous refrigerant. The compressor 2 may be a variable displacement compressor or a capacity constant compressor. The variable displacement compressor may have various structures, but may be an inverter structure compressor for ease of control.

The four-way valve 10 is a flow path switching valve connected to the compressor 2 to switch the flow of the refrigerant during heating and cooling, and guides the refrigerant compressed by the compressor 2 to the outdoor heat exchanger 4 during cooling. At the time of heating, it guides to the indoor heat exchanger (8).

The outdoor heat exchanger 4 acts as a condenser during the cooling operation and acts as an evaporator during the heating operation. By the operation of the outdoor blower 5 which consists of the outdoor fan 5a and the outdoor fan electric motor 5b which rotates the outdoor fan 5a, the outdoor heat exchanger 4 heat-exchanges.

The expansion valve 6 is disposed between the indoor heat exchanger 8 and the outdoor heat exchanger 4 to throttle the condensed refrigerant. In the cooling operation, the liquid refrigerant flowing from the outdoor heat exchanger 4 is throttled to supply the condensed refrigerant to the indoor heat exchanger 8, and in the heating operation, the liquid refrigerant flowing from the indoor heat exchanger 8 is throttled. The condensed refrigerant is supplied to the outdoor heat exchanger (4).

The indoor heat exchanger 8 acts as an evaporator during the cooling operation and as a condenser during the heating operation. By the operation of the indoor blower 9 which consists of the indoor fan 9a and the indoor fan electric motor 9b which rotates the indoor fan 9a, the indoor heat exchanger 8 heat-exchanges.

The accumulator 3 is disposed between the suction side of the compressor 2 and the four-way valve 10 to temporarily store the gasified refrigerant to remove moisture and foreign matter, and then supply the refrigerant with a constant pressure to the compressor 2. . During the cooling operation, water and foreign matter are removed from the gasified refrigerant flowing into the four-way valve 10 through the indoor heat exchanger 8 and supplied to the compressor 2, and during the heating operation, the outdoor heat exchanger 4 is supplied. Water and foreign substances are removed from the gasified refrigerant flowing into the four-way valve 10 and supplied to the compressor 2.

On the other hand, although not shown in the figure, a phase separator may be further installed on the indoor heat exchanger 8 side. Accordingly, a second expansion valve may be further provided to throttle the refrigerant passing through the phase separator.

Although not shown in the drawings, a discharge pressure detector and a discharge temperature detector for measuring the discharge pressure and the discharge temperature of the refrigerant discharged from the compressor 2 may be further disposed. In addition, an indoor temperature detector for detecting a temperature around the indoor heat exchanger 8 or an outdoor temperature detector for detecting a temperature around the outdoor heat exchanger 4 may be further disposed.

2 is a circuit diagram illustrating a control device of an air conditioner using a distributed power supply according to a first embodiment of the present invention.

Referring to FIG. 2, the motor control apparatus 100 of the present air conditioner includes a filter circuit 110, a matrix converter 120, a clamp circuit 130, an inverter 140, a controller 150, a dc / dc converter. 160, dc / ac converter 170, and relay 180.

As shown in FIG. 2, the power input to the matrix converter 120 includes a power supply 102 for supplying commercial AC power, a battery 104 for supplying DC power input from the outside, and a DC power supply for the battery 104. A system that is divided into a system 106 for supplying AC power so as to be accumulated is supplied as a distributed power system.

In the present embodiment, a distributed power supply is used to control the compressor motor 190 and the fan motor 195 of the air conditioner.

First, the dc / dc converter 160 changes the level of the DC power supplied from the outside to output. Here, the DC power supplied from the outside may be a DC power source using at least one of solar light, wind power, tidal power, and geothermal heat. Hereinafter, as an example, it is described that the sunlight is an electrically converted DC power source. Although the drawings illustrate a battery (solar cell) 104 that converts and accumulates sunlight into an electric DC power source, the present invention is not limited thereto.

The dc / dc converter 160 may be both a boost type for raising the input DC power and a step down type for lowering the level. To this end, the dc / dc converter 160 may include a switch device (not shown) and a transformer (not shown). In addition, the dc / dc converter 160 may output various levels of DC power.

The dc / ac converter 170 is a bidirectional dc / ac converter, and converts DC power into AC power and transmits the power to the system 106, or converts AC power from the system 106 into DC power to the battery 104. Supply. Here, the system 106 may be a three-phase AC power source as shown in the drawing, but is not limited thereto, and may be a single-phase AC power source.

In addition, the dc / ac converter 170 includes a plurality of switch elements (not shown), and the AC power is supplied from the controller 150 toward the grid 106 by a switching operation based on the first control signal C_sc1. Or DC power to the battery 104.

The filter circuit 110 filters and outputs noise and harmonic components included in a commercial AC power input from the power supply unit 102 or an AC power input from the dc / ac converter 170. In this case, the filter circuit 110 may include an inductor (not shown) and a capacitor (not shown).

The matrix converter 120 converts a commercial AC power or AC power supplied from the filter circuit 110 into a drive AC power having an arbitrary voltage and frequency.

At this time, the matrix converter 120 includes a plurality of bidirectional switch elements (not shown), and drive-drives to the compressor motor 190 by a switching operation based on the second control signal C_sc2 from the controller 150. Supply power.

The clamp circuit 130 is connected in parallel to the input side and the output side of the matrix converter 120, and receives a commercial AC power, AC power or a drive AC power to output a smooth DC power.

That is, the clamp circuit 130 uses a first rectifier 132 for full-wave rectification of commercial AC power or AC power, a second rectifier 134 for full-wave rectification of drive AC power, a commercial AC power source, an AC power source or an AC power source. The capacitor C accumulates and outputs a smooth DC power supply, and is connected in parallel with the capacitor C, and includes a resistor R for adjusting a balance of the voltage charged in the capacitor C.

Here, the first and second rectifiers 132 and 134 are each composed of a bridge-type diode (not shown), and the first and second rectifiers 132 and 134 respectively transmit AC power, commercial AC power, and AC power. Rectify and supply to the capacitor (C) to charge the smooth DC power.

In this case, the capacitor C preferably has a breakdown voltage of 600 V to 900 V, and the resistor R adjusts the voltage balance so that the voltage of the breaker C or more is not charged.

The inverter 140 includes a plurality of switch elements (not shown), and supplies a smooth AC power to the fan motor 195 by a switching operation based on the third control signal C_sc3 from the controller 150.

The relay 180 is connected between the power supply unit 102 and the dc / ac converter 170 and forms first and second passes (not shown) based on the fourth control signal C_sc4 from the controller 150.

That is, the relay 180 is switched off so that commercial AC power is input to the first pass, that is, the matrix converter 120, by the fourth control signal C_sc4, and AC power is supplied to the second pass, that is, the matrix converter 120. Switch on so that it is input.

The controller 150 forms a first path when the commercial AC power is more than a predetermined value, and forms a second path when the commercial AC power is less than the predetermined value, and the relay 180, the matrix converter 120, and the dc / ac converter ( 160 and the inverter 140 is controlled.

Here, the control unit 150 is a power detection unit (A) for detecting a commercial AC power supply, a power determination unit 152 for determining whether the commercial AC power is more than or less than a predetermined value, a current detection unit for detecting the output current flowing to the compressor motor. (B) and the microcomputer 154 for controlling the relay 180 and controlling the matrix converter 120 so that one of the first and second passes is formed according to the determination result of the power determining unit and the output current Iout. .

The power determination unit 152 determines that power is normally supplied when the commercial AC power is higher than or equal to a predetermined value, and determines that power is not normally supplied when the AC power is lower than the predetermined value.

At this time, the microcomputer 154 supplies a fourth control signal C_sc_4 to control the relay 180 to form a first path when it is determined that the commercial AC power is normally supplied from the power determination unit 152. If it is determined that the commercial AC power is not normally supplied, the fourth control signal C_sc_4 is supplied to control the relay 180 to form a second path.

Accordingly, the microcomputer 154 determines whether to supply AC power according to whether the AC power is normal, and stably drives the compressor motor 190 and the fan motor 195.

FIG. 3 is a circuit diagram schematically illustrating the matrix converter shown in FIG. 2.

Referring to FIG. 3, the matrix converter 120 uses a commercial driving power source (or AC power supply Vr, Vs, Vt) as a plurality of bidirectional switch elements Sr1, Sr2, Sr3, Ss1, Ss2, Ss3, St1, St2, St3. ) Is switched on or off to supply the drive alternating current (Vu, Vv, Vw) to the compressor motor (190).

Here, the matrix converter 120 is a three-phase driving power source (Vu, Vv) according to the switching on or off of the bidirectional switch element (Sr1, Sr2, Sr3) based on the commercial driving power source (or AC power supply Vr, Vs, Vt). , Vw) outputs the U-phase driving AC power supply Vu, and the V-phase driving AC power supply among the driving AC power supplies Vu, Vv, and Vw according to the switching on or off of the bidirectional switch elements Ss1, Ss2, and Ss3. Outputs Vv, and outputs the W-phase driving alternating current Vw among the driving alternating currents Vu, Vv, and Vw according to the switching on or off of the bidirectional switch elements St1, St2, and St3. 190).

As such, the matrix converter 120 converts the commercial AC power sources Vr, Vs, and Vt into the drive AC power sources Vu, Vv, and Vw based on the second control signal S_sc2 from the controller 150 according to the switch operation. AC-AC power converter to convert.

FIG. 4 is a circuit diagram showing the clamp circuit shown in FIG. 2.

Referring to FIG. 4, the clamp circuit 130 includes first and second rectifiers 132 and 134, a capacitor C, and a resistor R. Referring to FIG.

Here, the first and second rectifiers 132 and 134 respectively include a plurality of diodes D1 to D12 arranged in a bridge shape.

At this time, the first and fourth diodes (D1, D4) are full-wave rectified R-phase commercial AC power supply (Vr, or R-phase AC power supply) to supply to the capacitor (C), the second, fifth diodes (D2, D5) S-phase commercial AC power supply (Vs or S-phase AC power supply) is full-wave rectified and supplied to the capacitor (C), and the third and six diodes (D3, D6) supply T-phase power supply (Vt. Or T-phase AC power supply). Full-wave rectification and supply to the capacitor (C).

In addition, the ninth and twelfth diodes D9 and D12 are full-wave rectified and supplied to the capacitor C while the eighth and eleventh diodes D8 and D11 are connected to the V-phase drive alternating current power supply ( Vr is full-wave rectified and supplied to the capacitor C, and the seventh and tenth diodes D7 and D10 are full-wave rectified and supplied to the capacitor C of the W-phase driving AC power supply Vw.

In the capacitor C, each phase power source is charged to a breakdown voltage and outputs a smooth DC power source.

In this case, the resistor R includes the first to fourth resistors R1 to R4, and adjusts the voltage balance so that the capacitor C is not charged above the breakdown voltage.

And, both ends of the capacitor (C) or the resistor (R) is connected to the inverter 140, and supplies the DC power to the inverter 140.

FIG. 5 is a circuit diagram illustrating the inverter shown in FIG. 2.

Referring to FIG. 5, the inverter 140 includes a plurality of switch elements Q1 to Q6, and smoothes the smooth DC power supply of the clamp circuit 130 by an on / off operation of the switch elements Q1 to Q6. Convert it to AC power and output it.

Specifically, the upper arm switch elements Q1, Q3 and Q5 and the lower arm switch elements Q2, Q4 and Q6 connected in series are paired, and a total of three pairs of switch elements Q1 to Q6 are connected in parallel to each other. Connected.

Diodes of the switch elements Q1 to Q6 are connected in anti-parallel and perform switching on or off according to the control of the third control signal C_sc3 of the controller 150.

Therefore, the inverter 140 supplies the AC power, that is, the first, second, and third AC power to the fan motor 195.

That is, the inverter 140 may generate the smooth AC power using the smooth DC power discharged from the capacitor C of the clamp circuit 130 to drive the plurality of fan motors 195.

The motor control apparatus of the air conditioner using the distributed power supply of the present invention can drive a compressor motor and a plurality of fan motors through a matrix converter and a clamp circuit, depending on whether the normal AC power input to the matrix converter is normally input. Since the AC power can be input from the outside, there is an advantage that the compressor motor and the plurality of fan motors can be stably driven.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all aspects. In addition, the scope of the present invention is shown by the claims below, rather than the above detailed description. Also, it is to be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention.

1 is a block diagram showing an air conditioner according to a first embodiment of the present invention.

2 is a circuit diagram illustrating a control device of an air conditioner using a distributed power supply according to a first embodiment of the present invention.

FIG. 3 is a circuit diagram schematically illustrating the matrix converter shown in FIG. 2.

FIG. 4 is a circuit diagram showing the clamp circuit shown in FIG. 2.

FIG. 5 is a circuit diagram illustrating the inverter shown in FIG. 2.

Claims (11)

A dc / ac converter for supplying a system by converting a DC power input from the outside into an AC power; A matrix converter which receives a commercial AC power or the AC power and converts the AC power into a drive AC power having an arbitrary voltage or frequency to drive a compressor motor; And A relay configured to form a first pass through which the AC power is input to the matrix converter, or a second pass through which the AC power is input into the matrix converter; and controlling a motor of an air conditioner using a distributed power supply including a relay. Device. The method of claim 1, And a battery for accumulating the DC power. The method of claim 2, wherein the dc / ac converter, An electric motor control device for an air conditioner using a distributed power source, characterized in that the AC power is input from the system and converted into DC power to be supplied to the battery. The method of claim 1, wherein the dc / ac converter, An electric motor controller of an air conditioner using a distributed power source, characterized in that the bi-directional dc / ac converter. The method of claim 1, A clamp circuit connected in parallel between an input side and an output side of the matrix converter and receiving the commercial AC power or the AC power to output a smooth DC power; And And an inverter for converting the smooth DC power into a smooth AC power to drive a motor for a fan. The method of claim 5, wherein the clamp circuit, A first rectifier for full-wave rectifying the commercial AC power or the AC power; A second rectifier for full-wave rectifying the drive AC power; And And a capacitor for accumulating the commercial AC power, the AC power, or the AC power, and outputting the smooth DC power. 2. The method of claim 6, wherein the clamp circuit, In parallel with the capacitor, a resistor for adjusting the balance of the voltage charged in the capacitor; motor control apparatus for an air conditioner using a distributed power supply further comprising. The method of claim 1, A control unit for controlling switch timing of the bidirectional switch element in the relay and the matrix converter to form the first path when the commercial AC power is above a predetermined value, and to form the second path when the commercial AC power is below a predetermined value. An electric motor control device of an air conditioner using a distributed power supply further comprising. The method of claim 8, wherein the control unit, A power detector detecting the commercial AC power; A power determination unit that determines whether the commercial AC power is above or below the predetermined value; And And controlling the relay so that one of the first and second passes is formed according to a determination result of the power determination unit, and a microcomputer controlling the switch timing of the bidirectional switch element. Device. The method of claim 9, wherein the control unit, And a current detection unit for detecting an output current flowing through the compressor motor. According to claim 1, The DC power supplied from the outside, An electric motor control device for an air conditioner using a distributed power source, characterized in that the DC power is electrically converted using at least one of solar, wind, tidal, geothermal.
KR1020090060692A 2009-07-03 2009-07-03 Motor controller of air conditioner using distributed power KR20110003089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090060692A KR20110003089A (en) 2009-07-03 2009-07-03 Motor controller of air conditioner using distributed power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090060692A KR20110003089A (en) 2009-07-03 2009-07-03 Motor controller of air conditioner using distributed power

Publications (1)

Publication Number Publication Date
KR20110003089A true KR20110003089A (en) 2011-01-11

Family

ID=43611131

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090060692A KR20110003089A (en) 2009-07-03 2009-07-03 Motor controller of air conditioner using distributed power

Country Status (1)

Country Link
KR (1) KR20110003089A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150035641A (en) * 2013-09-27 2015-04-07 학교법인 두원학원 Electric compressor inverter with communication power and driving method thereof
KR102305090B1 (en) * 2020-04-09 2021-09-27 주식회사 천우이엔지 Ac dc combined cooling apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150035641A (en) * 2013-09-27 2015-04-07 학교법인 두원학원 Electric compressor inverter with communication power and driving method thereof
KR102305090B1 (en) * 2020-04-09 2021-09-27 주식회사 천우이엔지 Ac dc combined cooling apparatus

Similar Documents

Publication Publication Date Title
US8169180B2 (en) Motor controller of air conditioner
EP2779406B1 (en) Power converter and air conditioner having the same
US9543884B2 (en) Motor control device of air conditioner using distributed power supply
CN104488157A (en) Power supply apparatus
EP3133728A1 (en) Power conversion apparatus and air conditioner including the same
JPWO2005124988A1 (en) Air conditioner
KR101691809B1 (en) Apparatus for dirving motor using distributed power and distributed power system
KR20100012077A (en) Motor controller of air conditioner
KR20110003089A (en) Motor controller of air conditioner using distributed power
KR20100003580A (en) Motor controller of air conditioner
KR20090081914A (en) Motor controller of air conditioner
KR102178489B1 (en) Power converting apparatus and air conditioner including the same
KR20110012009A (en) Motor controller of air conditioner
KR102106911B1 (en) Power converting apparatus and home appliance including the same
KR101629647B1 (en) Power factor compensation apparatus and Air conditioner comprising the same
KR20110009929A (en) Motor controller of air conditioner
KR20110012008A (en) Motor controller of air conditioner
KR102192789B1 (en) Power converting apparatus and air conditioner including the same
CN111295828B (en) Power conversion device and air conditioner
JP6851331B2 (en) Power converter and air conditioner
KR102014143B1 (en) Power converting apparatus and home appliance including the same
KR102080516B1 (en) Motor driving device and air conditioner including the same
KR20110003088A (en) Air conditioner
KR20090102467A (en) Motor controller of air conditioner using distributed power
KR20110013978A (en) Apparatus for dirving motor using distributed power and distributed power system

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination