WO2006025233A1 - 電動機駆動装置およびそれを用いた空気調和機 - Google Patents
電動機駆動装置およびそれを用いた空気調和機 Download PDFInfo
- Publication number
- WO2006025233A1 WO2006025233A1 PCT/JP2005/015312 JP2005015312W WO2006025233A1 WO 2006025233 A1 WO2006025233 A1 WO 2006025233A1 JP 2005015312 W JP2005015312 W JP 2005015312W WO 2006025233 A1 WO2006025233 A1 WO 2006025233A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive signal
- inverter
- abnormality information
- input
- electric motor
- Prior art date
Links
Classifications
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/027—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an over-current
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
Definitions
- the present invention relates to an electric motor driving apparatus that drives an electric motor such as a brushless DC motor mounted mainly in an air conditioner or the like at an arbitrary rotation speed.
- FIG. 5 shows a conventional system configuration for driving an electric motor using this type of IC.
- the conventional motor drive device includes an IC 52, a fixed resistor 54, a drive signal generation unit 55, an inverter 56, a driver 57, and a first current protection unit 58.
- the brushless motor 53 is controlled by the IC 52.
- the IC 52 includes an inverter 56, a driver 57, and a first current protection unit 58.
- the inverter 56 has three series circuits in which a pair of switching elements are connected in series in a relationship between the upstream side and the downstream side of the current. A DC voltage output from the DC power source 51 is applied to these series circuits via the fixed resistor 54.
- the drive signal generation unit 55 is a PWM (Pulse Width Modulation) signal to achieve the target speed of the brushless motor 53 with three phase wires Y-connected around the neutral point. Is generated. Then, this PWM signal is amplified by the driver 57 and the inverter 56 is controlled.
- PWM Pulse Width Modulation
- the voltage at both ends of the fixed resistor 54 connected between the negative side of the DC power supply 51 and the inverter 56 is prevented. Is detected by the first current protection unit 58. If the voltage value at both ends exceeds the reference voltage value Vrefl preset in the first current protection unit 58, the first current protection unit 58 Shut off the output of driver 57. At the same time, error information is output. The drive signal generator 55 immediately shuts off the drive signal when abnormality information is input. The drive signal continues to be cut off even if abnormal information is not input.
- the present invention solves the above-described problems, and an object of the present invention is to provide a small and inexpensive electric motor drive device that can reliably protect an inverter without frequently stopping the electric motor.
- an electric motor drive device includes an inverter that drives a three-phase electric motor, a driver that amplifies a drive signal and transmits the drive signal, and an external resistor connected to the bus of the inverter Detects the current flowing through the inverter, and shuts off the driver output when the preset first reference value is exceeded, and at the same time outputs the first fault information, and the inverter
- the second current protection unit that outputs the second abnormality information when the current flowing in the current exceeds the second reference value set smaller than the first reference value, and the drive signal generation unit that generates the drive signal
- the drive signal generator blocks the drive signal immediately when the first error information is input, and continues to block the drive signal even if the first error information is no longer input. Information entered In this case, the drive signal is shut off immediately and the drive signal is output again when the second error information is not input To do.
- the motor drive device flows to the inverter by an inverter that drives the three-phase motor, a driver that amplifies the drive signal and transmits the drive signal, and an external resistor connected to the bus of the inverter.
- the output of the driver is shut off at the same time as the first current protection unit that outputs the first abnormality information, and the current flowing through the inverter is the first
- the drive signal generator immediately shuts off the drive signal when the first abnormality information is input, and outputs the drive signal again when the first abnormality information is not input, and the second abnormality information is input. If the drive signal is immediate The drive signal is cut off even if the second error information is not input.
- FIG. 1 is a block diagram showing a configuration of a first embodiment and a second embodiment of an electric motor drive device according to the present invention.
- FIG. 2 is a diagram showing protection of the inverter in the first embodiment according to the motor drive device of the present invention.
- FIG. 3 is a diagram showing protection of the inverter in the second embodiment according to the electric motor drive device of the present invention.
- FIG. 4 is a block diagram of an air conditioner equipped with an electric motor drive device according to the present invention.
- FIG. 5 is a block diagram showing a configuration of a conventional electric motor drive device.
- FIG. 1 is a block diagram showing the configuration of the first embodiment.
- the motor drive device includes an IC 2, a fixed resistor 4, a drive signal generation unit 5, an inverter 6, a driver 7, a first current protection unit 8, and a second current protection unit 9.
- the brushless motor 3 is controlled by IC2.
- I C2 includes an inverter 6, a driver 7, and a first current protection unit 8.
- the inverter 6 has three series circuits in which a pair of switching elements are connected in series in a relationship between the upstream side and the downstream side of the current. A DC voltage output from the DC power supply 1 is applied to these series circuits via the fixed resistor 4.
- the drive signal generation unit 5 generates a PWM signal for realizing the target speed of the brushless motor 3 having three phase wires Y-connected around the neutral point. Then, the signal is amplified by the driver 7 and the inverter 6 is controlled.
- the value of the current flowing through the inverter 6 is detected by converting it to the voltage value across the fixed resistor 4 connected between the negative side of the DC power source 1 and the inverter 6.
- the first current protection unit 8 cuts off the output of the driver 7 and simultaneously outputs the first abnormality information.
- the drive signal generator 5 immediately cuts off the drive signal when the first abnormality information is input. After that, even if the first abnormality information is no longer input, the drive signal is kept off to prevent the inverter 6 from being destroyed.
- the electric motor driving device shown in FIG. 1 is the same as that of the first embodiment, and thus the description thereof is omitted.
- the value of the current flowing through the inverter 6 is converted into a voltage value at both ends of the fixed resistor 4 connected between the negative side of the DC power source 1 and the inverter 6 and detected.
- the first current protection unit 8 cuts off the output of the driver 7 and outputs the first abnormality information at the same time.
- the drive signal generator 5 immediately cuts off the drive signal when the first abnormality information is input. After that, when the first abnormality information is no longer input, the drive signal is output again to prevent the inverter 6 from being destroyed without frequently stopping the brushless motor.
- Sarakuko if the voltage value across the fixed resistor 4 exceeds the reference voltage value Vref 2 of the second current protector 9 set to a value greater than the reference voltage value Vrefl, the second The current protection unit 9 outputs the second abnormality information.
- the drive signal generator 5 immediately cuts off the drive signal when the second abnormality information is input. After that, even if the second abnormality information is not input, the drive signal is kept shut off to prevent the inverter 6 from being destroyed.
- FIG. 4 is a block diagram of an air conditioner equipped with an electric motor drive device according to the present invention.
- the air conditioner 41 includes a DC power supply 44, an electric motor drive device 42, a brushless motor 43, and a fan 45.
- the DC power supply 44 supplies electric power to the motor drive device 42.
- the electric motor drive device 42 controls the air flow rate of the fan 45 through the brushless motor 43.
- the fan does not stop frequently even if the load of the fan 45 in the air conditioner 41 becomes large due to a change in the ambient temperature or the like. Stable operation can be maintained.
- the electric motor drive device does not require the use of an inverter with sufficient thermal capacity or a large heat sink attached to the inverter, so that a small and inexpensive system can be configured.
- the inverter can be reliably protected without frequently stopping the motor, and it is useful for an electric motor driving device that drives an electric motor such as a brushless DC motor at an arbitrary rotational speed.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006531933A JPWO2006025233A1 (ja) | 2004-09-02 | 2005-08-24 | 電動機駆動装置およびそれを用いた空気調和機 |
US11/574,016 US7615952B2 (en) | 2004-09-02 | 2005-08-24 | Electric motor driving device, and air conditioner using the same |
EP05780884.2A EP1786092A4 (en) | 2004-09-02 | 2005-08-24 | DEVICE FOR CONTROLLING AN ELECTRIC MOTOR AND AIR CONDITIONER USING THE DEVICE |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004255227 | 2004-09-02 | ||
JP2004-255227 | 2004-09-02 | ||
JP2005052827 | 2005-02-28 | ||
JP2005-052827 | 2005-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006025233A1 true WO2006025233A1 (ja) | 2006-03-09 |
Family
ID=35999890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015312 WO2006025233A1 (ja) | 2004-09-02 | 2005-08-24 | 電動機駆動装置およびそれを用いた空気調和機 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7615952B2 (ja) |
EP (1) | EP1786092A4 (ja) |
JP (1) | JPWO2006025233A1 (ja) |
WO (1) | WO2006025233A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5345764B2 (ja) * | 2007-05-22 | 2013-11-20 | ルネサスエレクトロニクス株式会社 | モータ制御用マイクロコンピュータ及びその制御方法 |
JP2014073006A (ja) * | 2012-09-28 | 2014-04-21 | Panasonic Corp | 過電流保護装置及び電動工具 |
US9484848B2 (en) * | 2013-08-06 | 2016-11-01 | Asmo Co., Ltd. | Motor controller |
FR3083398B1 (fr) * | 2018-06-28 | 2020-08-21 | Valeo Equip Electr Moteur | Systeme de commande d'un interrupteur, bras de commutation et installation electrique |
CN113983664A (zh) * | 2021-10-29 | 2022-01-28 | 北京小米移动软件有限公司 | 空调器及其控制方法、计算机可读存储介质 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07284289A (ja) * | 1994-04-07 | 1995-10-27 | Toshiba Corp | ブラシレスモータの駆動制御装置 |
JP2001286179A (ja) * | 2000-03-31 | 2001-10-12 | Daikin Ind Ltd | ファンモータ制御方法およびその装置 |
JP2004023809A (ja) * | 2002-06-12 | 2004-01-22 | Yaskawa Electric Corp | Pwmインバータ制御装置および制御方法 |
JP2004229430A (ja) * | 2003-01-23 | 2004-08-12 | Nidec Shibaura Corp | モータの制御装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60134781A (ja) * | 1983-12-23 | 1985-07-18 | Matsushita Electric Ind Co Ltd | 空気調和機の異常検出装置 |
US4897630A (en) * | 1987-01-21 | 1990-01-30 | Electronic Security Products Of California, Inc. | Programmable alarm system having proximity detection with vocal alarm and reporting features |
US5260684A (en) * | 1991-05-14 | 1993-11-09 | Northpoint Manufacturing & Marketing, Inc. | Warning system for a child's restraining seat for use in a passenger vehicle |
JPH09294392A (ja) | 1996-04-25 | 1997-11-11 | Matsushita Electric Ind Co Ltd | ブラシレスモータの駆動システム |
JPH1042586A (ja) * | 1996-07-18 | 1998-02-13 | Olympus Optical Co Ltd | モータ駆動回路 |
JP3484968B2 (ja) * | 1998-02-24 | 2004-01-06 | 日本精工株式会社 | 電動パワーステアリング装置の制御装置 |
US7342371B2 (en) * | 2004-04-28 | 2008-03-11 | Siemens Energy & Automation, Inc. | System and method for detecting motor run condition |
-
2005
- 2005-08-24 WO PCT/JP2005/015312 patent/WO2006025233A1/ja active Application Filing
- 2005-08-24 US US11/574,016 patent/US7615952B2/en active Active
- 2005-08-24 JP JP2006531933A patent/JPWO2006025233A1/ja not_active Withdrawn
- 2005-08-24 EP EP05780884.2A patent/EP1786092A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07284289A (ja) * | 1994-04-07 | 1995-10-27 | Toshiba Corp | ブラシレスモータの駆動制御装置 |
JP2001286179A (ja) * | 2000-03-31 | 2001-10-12 | Daikin Ind Ltd | ファンモータ制御方法およびその装置 |
JP2004023809A (ja) * | 2002-06-12 | 2004-01-22 | Yaskawa Electric Corp | Pwmインバータ制御装置および制御方法 |
JP2004229430A (ja) * | 2003-01-23 | 2004-08-12 | Nidec Shibaura Corp | モータの制御装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1786092A4 * |
Also Published As
Publication number | Publication date |
---|---|
US7615952B2 (en) | 2009-11-10 |
US20090115364A1 (en) | 2009-05-07 |
JPWO2006025233A1 (ja) | 2008-05-08 |
EP1786092A1 (en) | 2007-05-16 |
EP1786092A4 (en) | 2014-01-15 |
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