CN103746620A - Motor driver and air conditioner - Google Patents
Motor driver and air conditioner Download PDFInfo
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- CN103746620A CN103746620A CN201310545726.9A CN201310545726A CN103746620A CN 103746620 A CN103746620 A CN 103746620A CN 201310545726 A CN201310545726 A CN 201310545726A CN 103746620 A CN103746620 A CN 103746620A
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Abstract
The invention belongs to the field of controlling direct current brushless motors and particularly relates to a motor driver and an air conditioner. According to the motor driver provided by the invention, a protection unit is arranged in a high-voltage direct current power supply circuit in a brushless motor drive device, so that a capability of the high-voltage direct current power supply circuit for responding to noise of an external power supply is effectively improved, and a problem that the motor drier is damaged and disabled due to overlarge noise of the external power supply is solved. Further, when the internal of a motor drive control unit has problems and is disabled, the motor driver can cut off fault current to effectively block out the internal of the motor drive control unit, so that an external high-voltage direct current power supply is effectively protected. Similarly, the air conditioner provided with the motor driver can improve the capability of a high-voltage direct current power supply circuit for responding to noise of an external power supply, a motor is protected from being damaged, and when the internal of a motor drive control unit has problems and is disabled, an external high-voltage direct current power supply is effectively protected.
Description
Technical field
The invention belongs to the control field of DC brushless motor, relate in particular to a kind of motor driver and adopt the air conditioner of this motor driver.
Background technology
DC brushless motor is comprised of motor body and driver, is a kind of typical electromechanical integrated product.In the existing application of DC brushless motor, its known framework as shown in Figure 1, specifically comprises: for the high voltage direct current source circuit of power device power supply in the driving control unit of DC brushless motor, feed back to the speed feedback signal circuit of external control unit for the low-voltage DC power source circuit of control section power supply in the driving control unit of DC brushless motor, for the speed command transmission circuit of the driving control unit transmission speed regulating command of DC brushless motor and motor speed signal that drive and control of electric machine unit is produced.In order to drive the operation of controlling DC brushless motor, by outside, provide two-way power supply VM and VCC altogether, according to the speed regulating command of external control unit output, drive inverter section output voltage in this driving control device to motor winding, finally complete rotation and the motion of motor.
But high voltage direct current source circuit during the power noise in practical service environment, is subject to the impact of outside surge voltage in reply, often easily occurs invalid state, make power device in motor driver impaired and cause motor normally to work.
Summary of the invention
In view of this, first object of the present invention is to provide a kind of motor driver, to improve the ability of DC brushless motor high voltage direct current source circuit reply external power source noise, the antisurge ability of lifting motor, solves the excessive and problem that causes motor driver to lose efficacy of external power source noise.
Motor driver provided by the invention, is connected between external control unit and motor winding, comprising:
High voltage direct current source circuit, is used to the power component power supply in drive and control of electric machine unit;
Low-voltage DC power source circuit, is used to the control section power supply in drive and control of electric machine unit;
Speed command transmission circuit, for transmitting the speed regulating command that is sent to drive and control of electric machine unit by external control unit; And
Speed feedback signal circuit, feeds back to external control unit for the motor speed signal that drive and control of electric machine unit is produced;
And described high voltage direct current source circuit is provided with one and protects described power device when outside power supply noise exceedes preset value, prevent the protected location that motor driver is impaired.
On the other hand, the present invention also provides a kind of air conditioner.This air conditioner is built-in with DC brushless motor, and the motor driver that this DC brushless motor adopts as mentioned above.
According to motor driver provided by the invention, can effectively improve the ability of high voltage direct current source circuit in DC brushless motor driving device reply external power source noise, prevent that external power source noise is excessive and cause the problem that motor driver is impaired and lost efficacy.Further, this motor driver can also be when inside, drive and control of electric machine unit has problems and lost efficacy, and for example, when short circuit or overcurrent, disengagement failure electric current, by the actual effect blocking-up of inside, drive and control of electric machine unit, effectively protects external high pressure DC power supply.Same; possessed the air conditioner of this motor driver; both can improve the ability of high voltage direct current source circuit reply external power source noise; protection motor is not impaired; again can be when inside, drive and control of electric machine unit has problems and lost efficacy; disengagement failure electric current, effectively protects external high pressure DC power supply.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the drive unit of DC brushless motor in prior art;
Fig. 2 is the structured flowchart of the motor driver that provides of first embodiment of the invention;
Fig. 3 is the electronic devices and components exemplary plot of protected location in the motor driver that provides of second embodiment of the invention;
Fig. 4 is the electronic devices and components exemplary plot of protected location in the motor driver that provides of third embodiment of the invention;
Fig. 5 is the electronic devices and components exemplary plot of the motor driver that provides of fourth embodiment of the invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 2 is the structured flowchart of the motor driver that provides of first embodiment of the invention; For convenience of explanation, only show the part relevant to the present embodiment, as shown in the figure:
A kind of motor driver 20, is connected between three phase windings 30 of external control unit 10 and motor, comprising:
High voltage direct current source circuit, connects the output of high-voltage DC power supply VM and the high voltage source input VS of driving control unit, is used to the power component power supply in drive and control of electric machine unit;
Low-voltage DC power source circuit, is connected between the operating voltage input VCC of DC power supply VCC and driving control unit, is used to the control section power supply in drive and control of electric machine unit;
Speed command transmission circuit, for transmitting the speed regulating command that is sent to drive and control of electric machine unit by external control unit 10; And
Speed feedback signal circuit, feeds back to external control unit for the motor speed signal that drive and control of electric machine unit is produced;
And, in described high voltage direct current source circuit, be provided with a protected location 201.This protected location 201 can be protected described power device when outside power supply noise exceedes preset value, improves the antisurge ability of lifting motor, prevents the impaired inefficacy of motor driver 20.
Further; in specific implementation process; described protected location 201 is not limited to realizes above-mentioned functions; when being also used in drive and control of electric machine unit and going wrong and lost efficacy; while including but not limited to driving control unit short circuit or overcurrent, can disengagement failure electric current, by the internal failure blocking-up of drive and control of electric machine unit; make its unlikely external power source loop that affects of losing efficacy, and then protection external high pressure DC power supply VM.
When specific implementation, the electronic devices and components composition of protected location 201 can be as shown in Figure 3.Fig. 3 is the electronic devices and components exemplary plot of protected location in the motor driver that provides of second embodiment of the invention; For convenience of explanation, also only show the part relevant to the present embodiment, as shown in the figure:
As a preferred embodiment; protected location 201 can also be when inside, drive and control of electric machine unit goes wrong and lost efficacy; for example, when short circuit or overcurrent; disengagement failure electric current; by the internal failure blocking-up of drive and control of electric machine unit; make its unlikely external power source loop that affects of losing efficacy, and then protection external high pressure DC power supply.Particularly, Fig. 4 shows the electronic devices and components exemplary plot of protected location in the motor driver that third embodiment of the invention provides.As shown in the figure:
In fact, in specific implementation process, the components and parts combination of protected location 201 can have several form, includes but not limited to gas discharge tube, piezo-resistance and/or choking-winding etc.The present embodiment, with the example that is combined as of transient voltage suppressor diode TVSD1 or transient voltage suppressor diode TVSD1 and fusing resistor R1, is only used to be convenient to explanation.
Like this; according in the high voltage direct current source circuit in brushless motor driven apparatus, a protected location being set; can effectively improve the ability of DC high-voltage source circuit reply external power source noise, prevent that external power source noise is excessive and cause the problem that motor driver is impaired and lost efficacy.Further, can also be when inside, drive and control of electric machine unit have problems and lost efficacy, for example, when short circuit or overcurrent, disengagement failure electric current, by the actual effect blocking-up of inside, drive and control of electric machine unit, effectively protects external high pressure DC power supply.
Fig. 5 is the electronic devices and components exemplary plot of the motor driver that provides of fourth embodiment of the invention.Particularly, be the example electronic devices and components figure of high voltage direct current source circuit, low-voltage DC power source circuit, speed command transmission circuit and speed feedback signal circuit in motor driver.Similarly, for convenience of explanation, only show the part relevant to the present embodiment, as shown in the figure:
Low-voltage DC power source circuit is provided with voltage stabilizing didoe ZD3, capacitor C 1 and capacitor C 2; Described voltage stabilizing didoe ZD3, capacitor C 1 and capacitor C 2 are attempted by respectively between the electrical lead and ground that low-voltage dc power supply VCC and drive and control of electric machine unit join.
In fact, low-voltage DC power source circuit adds voltage stabilizing didoe ZD3, capacitor C 1 and capacitor C 2, one, for voltage stabilizing, and the 2nd, for filtering, be all for the control section stable power-supplying in drive and control of electric machine unit.
And on speed command transmission circuit, be provided with RC filter unit, be specially resistance R 2 and capacitor C 3; Resistance R 2 is connected between the speed regulating command output and drive and control of electric machine unit of external control unit 10, and capacitor C 3 is connected between one end and ground of resistance R 2.
On the other hand, on speed feedback signal circuit, be provided with current-limiting resistance R3 and NPN type triode Q1; Current-limiting resistance R3 is connected between the tach signal output FG of drive and control of electric machine unit and the base stage of NPN type triode Q1, the grounded emitter of NPN type triode Q1, and the collector electrode of NPN type triode Q1 meets the tach signal receiving terminal FG of external control unit.
Further, as a more excellent execution mode, on speed feedback signal circuit, be also provided with resistance R 4 and capacitor C 4; Capacitor C 4 is connected between the base stage and ground of NPN type triode Q1, and resistance R 4 is connected between the collector electrode of NPN type triode Q1 and the tach signal receiving terminal FG of external control unit.
And, the electrical lead of high voltage direct current source circuit over the ground between, can also and connect two filter capacitors.As shown in the figure; capacitor C 5 and capacitor C 6 are attempted by between the high voltage source input VS of surging prevention unit 201 and driving control unit; noise to outside high-voltage DC power supply VM filters, and further improves the ability of high direct voltage current circuit reply external power source noise.
It should be noted that, in specific implementation process, speed command may be VSP signal, may be also pwm pulse signal, can certainly be other signals for transmission speed regulating command.And in each embodiment shown in Fig. 2-Fig. 5, for convenience of explanation, the just carrier take VSP signal as speed regulating command.This is only example, and is not used in restriction signal type.
Motor driver provided by the invention goes for applying arbitrarily the electron electric power equipment of DC brushless motor, can certainly be applied to air conditioner.Therefore, the embodiment of the present invention also provides a kind of air conditioner, and this air conditioner is built-in with DC brushless motor, and the motor driver that this DC brushless motor adopts as mentioned above.
According to motor driver provided by the invention; in high voltage direct current source circuit in brushless motor driven apparatus, a protected location is set; can effectively improve the ability of high voltage direct current source circuit in DC brushless motor driving device reply external power source noise, prevent that external power source noise is excessive and cause the problem that motor driver is impaired and lost efficacy.Further, this motor driver can also be when inside, drive and control of electric machine unit has problems and lost efficacy, and for example, when short circuit or overcurrent, disengagement failure electric current, by the actual effect blocking-up of inside, drive and control of electric machine unit, effectively protects external high pressure DC power supply.Same; possessed the air conditioner of this motor driver; both can improve the ability of high voltage direct current source circuit reply external power source noise; protection motor is not impaired; again can be when inside, drive and control of electric machine unit has problems and lost efficacy; disengagement failure electric current, effectively protects external high pressure DC power supply.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, although the present invention has been carried out to more detailed explanation with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified or part technical characterictic is wherein equal to replacement.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a motor driver, is connected between external control unit and motor winding, it is characterized in that, described motor driver comprises:
High voltage direct current source circuit, is used to the power device power supply in drive and control of electric machine unit;
Low-voltage DC power source circuit, is used to the control section power supply in drive and control of electric machine unit;
Speed command transmission circuit, for transmitting the speed regulating command that is sent to drive and control of electric machine unit by external control unit; And
Speed feedback signal circuit, feeds back to external control unit for the motor speed signal that drive and control of electric machine unit is produced;
And described high voltage direct current source circuit is provided with one and protects described power device when outside power supply noise exceedes preset value, prevent the protected location that motor driver is impaired.
2. motor driver as claimed in claim 1; it is characterized in that, described protected location comprises the transient voltage suppressor diode TVSD1 that is connected between high-voltage DC power supply electrical lead and ground, absorbs excess energy when outside high-voltage DC power supply noise exceedes preset value.
3. motor driver as claimed in claim 2, is characterized in that, described protected location also comprises the fusing resistor R1 that is serially connected on high-voltage DC power supply electrical lead, produces breaking function when the short circuit of drive and control of electric machine unit or overcurrent.
4. motor driver as claimed in claim 1, is characterized in that, described low-voltage DC power source circuit comprises voltage stabilizing didoe ZD3, capacitor C 1 and capacitor C 2;
Described voltage stabilizing didoe ZD3, capacitor C 1 and capacitor C 2 are attempted by respectively between the electrical lead and ground that low-voltage dc power supply and drive and control of electric machine unit join.
5. the motor driver as described in claim 1-4 any one, is characterized in that, on described speed command transmission circuit, is provided with RC filter unit, comprises resistance R 2 and capacitor C 3;
Described resistance R 2 is connected between the speed regulating command output and drive and control of electric machine unit of external control unit, and described capacitor C 3 is connected between one end and ground of resistance R 2.
6. motor driver as claimed in claim 5, is characterized in that, is provided with current-limiting resistance R3 and NPN type triode Q1 on described speed feedback signal circuit;
Described current-limiting resistance R3 is connected between the tach signal output of drive and control of electric machine unit and the base stage of described NPN type triode Q1, the grounded emitter of described NPN type triode Q1, the collector electrode of described NPN type triode Q1 connects the tach signal receiving terminal of external control unit.
7. motor driver as claimed in claim 6, is characterized in that, described speed feedback signal circuit is also provided with resistance R 4 and capacitor C 4;
Described capacitor C 4 is connected between the base stage and ground of described NPN type triode Q1, and described resistance R 4 is connected between the collector electrode and the tach signal receiving terminal of external control unit of described NPN type triode Q1.
8. an air conditioner, is built-in with DC brushless motor, it is characterized in that, the motor driver of described DC brushless motor is as described in the claims 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545726.9A CN103746620A (en) | 2013-11-06 | 2013-11-06 | Motor driver and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545726.9A CN103746620A (en) | 2013-11-06 | 2013-11-06 | Motor driver and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN103746620A true CN103746620A (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310545726.9A Pending CN103746620A (en) | 2013-11-06 | 2013-11-06 | Motor driver and air conditioner |
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| CN (1) | CN103746620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786389A (en) * | 2017-01-03 | 2017-05-31 | 安徽美芝制冷设备有限公司 | Overcurrent protective device, frequency-changeable compressor system and refrigerator for frequency-changeable compressor |
| CN108162723A (en) * | 2016-12-07 | 2018-06-15 | 中达电子零组件(吴江)有限公司 | A kind of air conditioner for electric motor coach system and its frequency converter |
| CN111912085A (en) * | 2020-05-22 | 2020-11-10 | 海信（山东）空调有限公司 | Drive circuit and air conditioner |
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| US20010009360A1 (en) * | 2000-01-21 | 2001-07-26 | Lg Electronics, Inc. | Current limit circuit of inverter refrigerator |
| CN101126932A (en) * | 2006-08-16 | 2008-02-20 | 珠海格力电器股份有限公司 | Automatic testing device and testing method for strong current controller of air conditioner |
| CN201466359U (en) * | 2009-07-06 | 2010-05-12 | 四川华壹电子科技有限公司 | Full-automatic energy-saving intelligent socket |
| CN202231424U (en) * | 2011-09-29 | 2012-05-23 | 上海臻和防雷电气技术有限责任公司 | Lightning protection device for communication line of intelligent electrical system |
| CN103269190A (en) * | 2013-04-02 | 2013-08-28 | 江苏富天江电子电器有限公司 | Driver for driving direct current brushless motor for air-condition fan |
| CN203590105U (en) * | 2013-11-06 | 2014-05-07 | 广东威灵电机制造有限公司 | Motor drive unit and air conditioner |
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2013
- 2013-11-06 CN CN201310545726.9A patent/CN103746620A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010009360A1 (en) * | 2000-01-21 | 2001-07-26 | Lg Electronics, Inc. | Current limit circuit of inverter refrigerator |
| CN101126932A (en) * | 2006-08-16 | 2008-02-20 | 珠海格力电器股份有限公司 | Automatic testing device and testing method for strong current controller of air conditioner |
| CN201466359U (en) * | 2009-07-06 | 2010-05-12 | 四川华壹电子科技有限公司 | Full-automatic energy-saving intelligent socket |
| CN202231424U (en) * | 2011-09-29 | 2012-05-23 | 上海臻和防雷电气技术有限责任公司 | Lightning protection device for communication line of intelligent electrical system |
| CN103269190A (en) * | 2013-04-02 | 2013-08-28 | 江苏富天江电子电器有限公司 | Driver for driving direct current brushless motor for air-condition fan |
| CN203590105U (en) * | 2013-11-06 | 2014-05-07 | 广东威灵电机制造有限公司 | Motor drive unit and air conditioner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162723A (en) * | 2016-12-07 | 2018-06-15 | 中达电子零组件(吴江)有限公司 | A kind of air conditioner for electric motor coach system and its frequency converter |
| CN106786389A (en) * | 2017-01-03 | 2017-05-31 | 安徽美芝制冷设备有限公司 | Overcurrent protective device, frequency-changeable compressor system and refrigerator for frequency-changeable compressor |
| CN111912085A (en) * | 2020-05-22 | 2020-11-10 | 海信（山东）空调有限公司 | Drive circuit and air conditioner |
| CN111912085B (en) * | 2020-05-22 | 2023-10-27 | 海信空调有限公司 | Driving circuit and air conditioner |
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Application publication date: 20140423 |
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| RJ01 | Rejection of invention patent application after publication |