CN1492198A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN1492198A
CN1492198A CNA031544134A CN03154413A CN1492198A CN 1492198 A CN1492198 A CN 1492198A CN A031544134 A CNA031544134 A CN A031544134A CN 03154413 A CN03154413 A CN 03154413A CN 1492198 A CN1492198 A CN 1492198A
Authority
CN
China
Prior art keywords
power supply
direct voltage
voltage
air conditioner
motor driven
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
CNA031544134A
Other languages
Chinese (zh)
Inventor
小林玄门
文
野间博文
二
后藤英二
则
中本昭则
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of CN1492198A publication Critical patent/CN1492198A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • B60H1/3208—Vehicle drive related control of the compressor drive means, e.g. for fuel saving purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3236—Cooling devices information from a variable is obtained
    • B60H2001/3266—Cooling devices information from a variable is obtained related to the operation of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3269—Cooling devices output of a control signal
    • B60H2001/327—Cooling devices output of a control signal related to a compressing unit
    • B60H2001/3272—Cooling devices output of a control signal related to a compressing unit to control the revolving speed of a compressor

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

An air conditioner having a DC voltage sensing unit turns all of the upper and lower arms into the off-state when the DC voltage is at a certain value or higher due to the regenerative current caused by a tailwind and operation of the compressor is stopped, thereby preventing application of overvoltage to the components of the circuit.

Description

Air conditioner
Technical field
The present invention relates to the control device of the outdoor fan motor of air conditioner.
Background technology
About prior art, illustrate with Fig. 6.
Among Fig. 6, air conditioner is by constituting with lower member: be provided with the commutation circuit element 102a of top set of three-phase bridge connection and the motor driven portion 102 of inferior division commutation circuit element 102b; Carry out the speed control of motor 101, built-in minimum load is than the control part 105 of testing circuit 105a; The commutation circuit element 102a of top set, inferior division commutation circuit element 102b are connected, disconnect the motor control part 102c of control by the control signal of control part 105 by phase sequence; Source power supply 110 full-wave rectifications, be transformed into the direct current transducer 111 of direct current; By direct current transducer 111 conversion, the DC power supply 104 that is connected with the input side of motor driven portion 102; The smmothing capacitor 104a that is used for DC power supply 104; Outdoor fan 108; The motor that is used for drive chamber's external fan 108 101 that is connected with the outlet side of motor driven portion 102; Compressor 114.
Three-phase brushless motor 101 three-phase coil for having U, V, W phase, a kind of by the DC motor of motor driven portion 102 drive controlling that are made of electronic circuit needing to be used in particular for the purposes of variable-ratio.
In the air conditioner that drives this three-phase brushless motor 101, quicken by strong down wind direct rotational direction by outdoor fan 108, the revolution of motor 101 increases, and fixes for making this revolution, dwindles the operating load ratio of control signal.In addition, even operating load than narrowing down under the minimum state, when motor 101 surpasses common control revolution, minimum load than testing circuit 105a in, during the duty ratio that detects minimum, by the commutation circuit element 102a of top set and inferior division commutation circuit element 102b being arranged on the state of disconnection, suppress the induced voltage that produces among the coil 101a.In addition, if the revolution of motor 101 drops to than below the also low set point of maximum control revolution, because return to revolution control, so can prevent to follow the voltage rising of strong DC power supply portion 104 with the wind and the destruction (for example opening flat 09-23685 communique) of going up inferior division commutation circuit element 102a and 102b in advance with reference to the spy.
But air conditioner detects operating load in than testing circuit 105a than under for minimum situation at minimum load, is to consider that revolution with motor 101 is because of increase to prerequisite with the wind.
But, stop at compressor 114, under the pattern of motor 101 runnings, under because of the situation that the revolution of motor 101 increases with the wind, operating load is than not being minimum, even the induced voltage that produces in coil 101a is no more than under the voltage condition of DC power supply 104, because switch the commutation circuit element 102a of top set, inferior division commutation circuit element 102b forms the loop of regenerative current to smmothing capacitor 104a charging.Its result carries out the boost chopper action, and direct voltage increases, and the withstand voltage superpotential possibility that applies the component parts that exceeds circuit is arranged.
Summary of the invention
The invention provides a kind of air conditioner, it is characterized in that, have the motor driven portion that on top set's circuit that three-phase bridge connects and inferior division circuit, is respectively equipped with three switching devices; Connect the control part that disconnects control switching element with phase sequence; The DC power supply that is connected with the input side of motor driven portion; The brushless motor that is used for drive chamber's external fan that is connected with the outlet side of motor driven portion; By the brushless motor compressor driven; Detect the direct voltage test section of the voltage of DC power supply, stop and the direct voltage test section detects direct voltage at the voltage of regulation when above at compressor, in top set's circuit of motor driven portion and the inferior division circuit at least one placed the state of disconnection.
Description of drawings
Fig. 1 is the pie graph of the air conditioner in the embodiments of the present invention 1,2.
Fig. 2 is the pie graph of the air conditioner in the embodiments of the present invention 3.
Fig. 3 is the pie graph of the air conditioner in the embodiments of the present invention 4.
Fig. 4 is the wind speed of expression among the present invention and the performance plot of the relation of direct voltage.
Fig. 5 is the wind speed of expression among the present invention and the performance plot of the relation of load.
Fig. 6 is the pie graph of the air conditioner in the existing air conditioner.
Embodiment
Below, for embodiments of the present invention, illustrate with reference to figure.
(execution mode 1)
For embodiments of the present invention 1 usefulness Fig. 1, Fig. 4, Fig. 5 explanation.
Among Fig. 1, air conditioner is by constituting as lower member: be provided with the commutation circuit element 2a of top set of three-phase bridge connection and the motor driven portion 2 of inferior division commutation circuit element 2b; Control part 5; The commutation circuit element 2a of top set, inferior division commutation circuit element 2b are connected, disconnect the motor control part 2c of control by the control signal of control part 5 by phase sequence; Source power supply 10 full-wave rectifications and be transformed into the direct current transducer 11 of direct current; The DC power supply 4 of changing and being connected by direct current transducer 11 with the input side of motor driven portion 2; The smmothing capacitor 4a that is used for the withstand voltage 330V of DC power supply 4; Outdoor fan 8; The motor that is used for drive chamber's external fan 81 that is connected with the outlet side of motor driven portion 2; Compressor 14; Detect the direct voltage test section 3 of the voltage of DC power supply 4.
Among Fig. 4, transverse axis is a wind speed with the wind, and the longitudinal axis is the load that is connected with DC power supply 4 during for about 0W, by the direct voltage of generation with the wind, represents its relation with straight line 40a.
Maximum wind velocity in the environment for use is about 30m/s, and direct voltage is 1300v during wind speed 30m/s.The withstand voltage of smmothing capacitor 4a is 330V, then surpasses the withstand voltage of smmothing capacitor 4a more than the wind speed 17m/s.
Fig. 5 is the performance plot of the relation of wind speed with the wind when being 330V of the direct voltage of expression DC power supply 4, load, and transverse axis is a wind speed with the wind, and the longitudinal axis is load.
In the time of wind speed 30m/s, load 10W, the direct voltage of DC power supply 4 is 330V.
That is, under the situation of the load bigger, when wind speed 30m/s, be no more than the withstand voltage 330V of parts than 10W.
Among the regional 50d of the upper left side of straight line 50a, the direct voltage of DC power supply 4 is below the 330V, is more than the 330V among the regional 50e of lower right side.
Load when in addition, compressor 14 turns round is much larger than 10W.
Under the pattern that the motor 1 of the air conditioner of formation is turning round as shown in Figure 1, power by the load consumption of DC power supply 4, because of compressor 14 stops to below about 10W, generating with the wind greater than certain wind speed, under the situation that the revolution of motor 1 increases, even the induced voltage that generates at coil 1a is no more than under the voltage condition of DC power supply 4, because switch the commutation circuit element 2a of top set, inferior division commutation circuit element 2b, form the loop of regenerative current to smmothing capacitor 4a charging, direct voltage increases.
At this moment, control part 5 is under the situation more than the 325V detect direct voltage by direct voltage test section 3, by making commutation circuit element 2a of top set and following commentaries on classics branch circuit element 2b be in the state of disconnection entirely, stop the boost chopper action, prevent DC voltage rising.
In addition, in compressor 14 running,, can prevent to cause the misoperation of overvoltage protection because of the variation in voltage of load change or source power supply etc. because do not carry out overvoltage protection.
(execution mode 2)
The formation of the air conditioner in the execution mode 2 and execution mode 1 are same as Fig. 1, Fig. 4, shown in Figure 5.
Under the pattern that the motor 1 of the air conditioner that constitutes as enforcement mode 1 is turning round, the consumed power that causes by the load of DC power supply 4, because of compressor 14 stops below 10W, thereby under the situation of generation on the direction that motor 1 is quickened greater than the increase of revolution with the wind of certain wind speed, even the induced voltage that produces in coil 1a is no more than under the voltage condition of DC power supply 4, because switch the commutation circuit element 2a of top set, inferior division commutation circuit element 2b, form the loop of regenerative current to smmothing capacitor 4a charging, direct voltage increases.
At this moment, control part 5 is under the situation more than the 325V detect direct voltage by direct voltage test section 3, by making the commutation circuit element 2a of top set and any one full connection of inferior division commutation circuit element 2b, and carry out braking maneuver, prevent DC voltage rising.
In addition, under the situation that compressor 14 is turning round, because do not carry out overvoltage protection action, so prevent to cause the misoperation of overvoltage protection because of the variation in voltage of load change or source power supply etc.
(execution mode 3)
The formation of the air conditioner in the execution mode 3 is as Fig. 2, Fig. 4, shown in Figure 5.
In addition, Fig. 4, Fig. 5 and execution mode 1 are same.
Fig. 2 is on the basis of the formation in execution mode 1,2, is connected the pie graph of the air conditioner that the switch 6a that disconnects supply control,, the direct voltage of controlling motor 16 that be connected with the direct voltage supply line of motor 1 constitutes by Be Controlled portion 5.
As shown in Figure 2 in the air conditioner of Gou Chenging, under the pattern that motor 1 is turning round, power by the load consumption of DC power supply 4, because of compressor 14 stops below 10W, generate on the direction that motor 1 is quickened greater than certain wind speed with the wind, under the revolution situation about increasing, even when the induced voltage that generates in coil 1a is no more than the voltage of DC power supply 4, because switch commutation circuit element 2a of top set and inferior division commutation circuit element 2b, form the loop of regenerative current to smmothing capacitor 4a charging, direct voltage increases.
At this moment, control part 5 is under the situation more than the 325V detect direct voltage by direct voltage test section 3, by cutting off switch 6a, disconnects the loop to smmothing capacitor 4a charging, prevents DC voltage rising.
In addition, under the situation that compressor 14 is moving, because do not carry out voltage protection action, so prevent to cause the misoperation of overvoltage protection because of the variation in voltage of load change or source power supply etc.
(execution mode 4)
The formation of the air conditioner in the execution mode 4 is as Fig. 3, Fig. 4, shown in Figure 5.
In addition, Fig. 4, Fig. 5 and execution mode 1 are same.
Among Fig. 3, air conditioner is connected switch 7 between the positive pole that disconnects direct voltage supply line 6 control, that be connected motor 1 and the negative pole, that be connected in series with resistance 7a by Be Controlled portion 5 and is constituted on the basis of the formation of execution mode 1,2.
As shown in Figure 3 in the air conditioner of Gou Chenging, under the pattern that motor 1 is turning round, power by the load consumption of DC power supply 4, because of compressor 14 stops below about 10W, generate on the direction that motor 1 is quickened greater than certain wind speed with the wind, under the revolution situation about increasing, even the induced voltage that generates in coil 1a is no more than under the voltage condition of DC power supply 4, because switch commutation circuit element 2a of top set and inferior division commutation circuit element 2b, form the loop of regenerative current to smmothing capacitor 4a charging, direct voltage increases.
At this moment, control part 5 is under the situation more than the 325V detect direct voltage by direct voltage test section 3, by opening switch 7, forms the discharge circuit that has the above load of 10W, by carrying out preventing DC voltage rising by the discharge beyond smmothing capacitor 4a being charged with the wind.
In addition, under the situation that compressor 14 is turning round, because do not carry out overvoltage protection action, so prevent to cause the misoperation of overvoltage protection because of the variation in voltage of load change or source power supply etc.
More than such the present invention, by the motor driven portion that is respectively equipped with three switching devices on top set's circuit that connects at three-phase bridge and the inferior division circuit; Connect, disconnect the control part of control switching element by phase sequence; The DC power supply that is connected with the input side of motor driven portion; The brushless motor that is used for drive chamber's external fan that is connected with the outlet side of motor driven portion; In the air conditioner that the direct voltage test section of the voltage of compressor and detection DC power supply constitutes, compressor stop and the direct voltage test section detect direct voltage the regulation voltage more than in, the branch circuit up and down of motor driven portion is placed the state of full disconnection.
In addition, the present invention compressor stop and the direct voltage test section detect direct voltage more than the voltage of regulation in, can only place top set's circuit the state of full connection or only the inferior division circuit be placed the state of full connection.
In addition, the present invention has to be connected by control part and disconnects DC power supply switch control, that be connected the supply of DC power supply between motor driven portion and the DC power supply, control motor driven portion, compressor stop and the direct voltage test section detect direct voltage the regulation voltage more than in, DC power supply switch disconnects, and cuts off the power supply of motor driven portion.
In addition, the present invention has by control part and connects the load resistance that disconnects positive pole control, that be connected DC power supply and the load transfer switch between the negative pole and be connected in series with the load transfer switch, compressor stop and the direct voltage test section detect direct voltage the regulation voltage more than in, connect the load transfer switch, load resistance is connected between the positive pole and negative pole of DC power supply.
By forming this formation, can prevent the rising of direct voltage, can prevent from component parts is applied overvoltage and the destruction that causes.
In addition, under the situation that compressor is moving, because do not carry out overvoltage protection action, so prevent to cause the misoperation of overvoltage protection because of the variation in voltage of load change or source power supply etc.

Claims (4)

1. air conditioner is characterized in that having: the motor driven portion that is respectively equipped with three switching devices on top set's circuit that three-phase bridge connects and inferior division circuit;
Connect the control part that disconnects the described switching device of control by phase sequence;
The DC power supply that is connected with the input side of described motor driven portion;
The brushless motor that is used for drive chamber's external fan that is connected with the outlet side of described motor driven portion;
By the brushless motor compressor driven;
Detect the direct voltage test section of the voltage of described DC power supply,
Described compressor stop and described direct voltage test section detect described direct voltage more than the voltage of regulation in, make the described top set circuit of described motor driven portion and at least one in the described inferior division circuit place the state of disconnection.
2. air conditioner as claimed in claim 1, it is characterized in that, also have by described control part connect disconnect control, be connected between described motor driven portion and the described DC power supply, the DC power supply switch of the supply of the described DC power supply of the described motor driven of control portion
Described compressor stop and described direct voltage test section detect direct voltage more than the voltage of regulation in, disconnect described DC power supply switch, cut off the power supply of described motor driven portion.
3. air conditioner as claimed in claim 1 is characterized in that, also has by described control part to connect disconnection control, be connected the positive pole of described DC power supply and the load diverter switch between the negative pole, and the discharge circuit of connecting with described load diverter switch,
Described compressor stop and described direct voltage test section detect direct voltage more than the voltage of regulation in, connect described load diverter switch, between the positive pole of described DC power supply and negative pole, connect described discharge circuit.
4. air conditioner as claimed in claim 3 is characterized in that, described discharge circuit is a load electricity sun.
CNA031544134A 2002-09-30 2003-09-27 Air conditioner Pending CN1492198A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002286733 2002-09-30
JP2002286733A JP2004125209A (en) 2002-09-30 2002-09-30 Air conditioner

Publications (1)

Publication Number Publication Date
CN1492198A true CN1492198A (en) 2004-04-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNA031544134A Pending CN1492198A (en) 2002-09-30 2003-09-27 Air conditioner

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JP (1) JP2004125209A (en)
CN (1) CN1492198A (en)
WO (1) WO2004031658A1 (en)

Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN102067439A (en) * 2008-06-19 2011-05-18 松下电器产业株式会社 Motor control apparatus
CN101517880B (en) * 2006-09-22 2011-12-07 松下电器产业株式会社 Air conditioning apparatus
CN106104998A (en) * 2014-03-31 2016-11-09 爱信艾达株式会社 Control device for inverter
CN106165277A (en) * 2014-03-31 2016-11-23 爱信艾达株式会社 Control device for inverter
CN106953562A (en) * 2017-03-16 2017-07-14 珠海格力电器股份有限公司 Direct current generator and control method
CN108332390A (en) * 2017-12-19 2018-07-27 青岛海尔空调器有限总公司 A kind of air-conditioner control method and air conditioner
CN109792162A (en) * 2016-10-18 2019-05-21 株式会社富士 Contactless power supply device

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KR101490185B1 (en) * 2008-12-17 2015-02-11 엘지전자 주식회사 Apparatus and method for initially driving a sensorless bldc motor
CN102763319B (en) * 2010-02-10 2015-07-01 松下电器产业株式会社 Brushless motor drive device, brushless motor, and air conditioner
JP2012249397A (en) * 2011-05-27 2012-12-13 Hitachi Appliances Inc Motor control device and air conditioner using the same
CN105871270B (en) * 2016-05-06 2018-07-27 浙江东方机电有限公司 A kind of method and device differentiating permanent magnet synchronous motor three-phase windings phase sequence
US11506412B2 (en) 2018-01-11 2022-11-22 Mitsubishi Electric Corporation Air conditioner

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JPH06253585A (en) * 1993-02-25 1994-09-09 Nippondenso Co Ltd Abnormality detector for brushless motor
JP3364361B2 (en) * 1995-07-04 2003-01-08 東芝キヤリア株式会社 Air conditioner
JPH10117490A (en) * 1996-10-14 1998-05-06 Daikin Ind Ltd Brushless motor
JPH11299280A (en) * 1998-04-07 1999-10-29 Takaoka Electric Mfg Co Ltd Motor controller

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101517880B (en) * 2006-09-22 2011-12-07 松下电器产业株式会社 Air conditioning apparatus
CN102067439A (en) * 2008-06-19 2011-05-18 松下电器产业株式会社 Motor control apparatus
CN106104998A (en) * 2014-03-31 2016-11-09 爱信艾达株式会社 Control device for inverter
CN106165277A (en) * 2014-03-31 2016-11-23 爱信艾达株式会社 Control device for inverter
CN106104998B (en) * 2014-03-31 2018-10-19 爱信艾达株式会社 Control device for inverter
CN106165277B (en) * 2014-03-31 2018-10-23 爱信艾达株式会社 Control device for inverter
CN109792162A (en) * 2016-10-18 2019-05-21 株式会社富士 Contactless power supply device
CN106953562A (en) * 2017-03-16 2017-07-14 珠海格力电器股份有限公司 Direct current generator and control method
CN106953562B (en) * 2017-03-16 2019-03-19 珠海格力电器股份有限公司 Direct current generator and control method
CN108332390A (en) * 2017-12-19 2018-07-27 青岛海尔空调器有限总公司 A kind of air-conditioner control method and air conditioner

Also Published As

Publication number Publication date
WO2004031658A1 (en) 2004-04-15
JP2004125209A (en) 2004-04-22

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