CN112737427A - High-speed DC brushless motor driver - Google Patents
High-speed DC brushless motor driver Download PDFInfo
- Publication number
- CN112737427A CN112737427A CN202110055903.XA CN202110055903A CN112737427A CN 112737427 A CN112737427 A CN 112737427A CN 202110055903 A CN202110055903 A CN 202110055903A CN 112737427 A CN112737427 A CN 112737427A
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- module
- brushless motor
- speed
- power
- rotor position
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- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000010354 integration Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000003700 hair damage Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 201000004384 Alopecia Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003648 hair appearance Effects 0.000 description 1
- 230000003676 hair loss Effects 0.000 description 1
- 208000024963 hair loss Diseases 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
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- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
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- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
-
- 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention provides a high-speed direct current brushless motor driver, which comprises a power supply rectification filter module, a control module, a power module, a rotor position detection module, a protection module and a user interface module, wherein the power supply rectification filter module provides electric energy for the control module and a told direct current brushless motor; the control module controls the power of the high-speed DC brushless motor through the power module, and performs overcurrent protection on the high-speed DC brushless motor through the protection module; the rotor position detection module detects and collects rotor position information of the high-speed direct-current brushless motor during working and feeds the rotor position information back to the control module; the user interface module is in communication connection with the power module. The invention solves the problem of miniaturization of the high-speed direct current brushless motor driver applied to the hair dryer, and improves the use convenience and the comfort. A high-integration master control MCU chip, an MOS tube power element and a sensorless position detection scheme are adopted, so that a smaller size is realized. Has the characteristics of high integration level and small structure.
Description
Technical Field
The invention relates to the field of drivers, in particular to a high-speed direct-current brushless motor driver.
Background
The hair dryer is an electric appliance which is common in daily life, the main function of the hair dryer is used for drying and shaping hair, and the quality of the hair dryer is affected.
At present, the rotating speed of the motor used by most hair dryers in the market is only 20000-30000 r/min, and the size of the generated wind power is limited. In order to satisfy the user's requirement and realize quick hair drying, the common solution is to increase the temperature of the hot air and increase the fan blades of the motor. The disadvantages brought by the solution are that the air outlet temperature is too high, so that the moisture in the hair is quickly evaporated, and irreversible hair damage is caused; the blower has larger volume and weight, and the comfort of the user is low. The high-speed direct current brushless motor can provide the rotational speed as high as 110000r/min, can provide stronger, more even wind-force for the hair-dryer, realizes drying hair fast under relative low temperature, reduces the hair loss. And the motor is smaller and more exquisite in size and convenient to use in daily life.
Compared with the traditional motor, the direct-current brushless motor has high efficiency, the motor has no excitation loss and carbon brush loss, and multi-stage speed reduction loss is eliminated; the reliability is high, the stability is good, the adaptability is strong, and the maintenance is simple; the vibration and the jolt are resisted, the noise is low, the vibration is small, the operation is smooth, and the service life is long; the advantages of no spark and the like are achieved, but the driving circuit is complicated.
Therefore, the design scheme of the high-speed direct current brushless motor driver for the hair dryer has extremely high application value and significance.
Disclosure of Invention
In view of the shortcomings in the prior art, it is an object of the present invention to provide a high speed dc brushless motor driver circuit.
The invention provides a high-speed direct current brushless motor driver circuit, which comprises a power supply rectification filtering module, a control module, a power module, a rotor position detection module, a protection module and a user interface module, wherein:
the power supply rectification filtering module provides electric energy for the control module and the told direct current brushless motor;
the control module controls the power of the high-speed DC brushless motor through the power module, and performs overcurrent protection on the high-speed DC brushless motor through the protection module;
the rotor position detection module detects and collects rotor position information of the high-speed direct-current brushless motor during working and feeds the rotor position information back to the control module;
the user interface module is in communication connection with the power module.
Preferably, the power supply rectification filter module includes a rectification filter circuit, a BUCK circuit and a DC-DC BUCK circuit, wherein:
the rectification filter circuit realizes AC-DC rectification filtering to obtain direct-current voltage, and the direct-current voltage is used for supplying power to the BUCK voltage reduction circuit and the high-speed direct-current brushless motor;
the BUCK voltage reduction circuit reduces the voltage of the direct current to 15V;
the DC-DC voltage reduction circuit reduces the 15V direct current to 5V through the DC-DC chip.
Preferably, the control module comprises an MCU, an EEPROM memory, and a peripheral circuit, wherein:
the MCU is electrically connected with the EEPROM and the peripheral circuit.
Preferably, the MCU comprises an 8051MCU and a motor controller integrating a 600V three-phase drive gate.
Preferably, the power module uses a plurality of N-channel MOS transistors as power output elements.
Preferably, the user interface module is used for regulating and displaying the rotating speed of the motor.
Preferably, the protection module realizes overcurrent protection by detecting the output current of the S pole of the MOSFET tube of the lower arm.
Preferably, the rotor position detection module detects based on a rotor position of a back emf.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has reasonable structure, ingenious design and strong operability.
2. The invention can greatly reduce the volume of the circuit board and improve the use comfort of users.
3. According to the invention, hair damage caused by overhigh air outlet temperature can be avoided through the protection module.
4. The invention solves the problem of miniaturization of a high-speed direct current brushless motor driver applied to a hair drier, can obtain stronger wind power by adopting the hair drier with the high-speed direct current brushless motor, generates less noise and vibration and improves the use convenience and the comfort.
5. The invention adopts a high-integration main control MCU chip, an MOS tube power element and a sensorless position detection scheme, thereby realizing smaller size.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic diagram of a high-speed dc brushless motor driver according to the present invention.
Fig. 2 is a circuit diagram of a high-speed dc brushless motor driver according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 to 2, the high-speed dc brushless motor driver according to the present invention includes a power supply rectifying and filtering module, a control module, a power module, a rotor position detecting module, a protection module, and a user interface module. Wherein the power rectification filtering module: providing electric energy for the control module and the motor to work; a control circuit module: the control core of the drive board realizes the control of the whole drive board; a power module: the control module is used for controlling and providing electric energy with different powers for the high-speed DC brushless motor; a rotor position detection module: detecting and collecting rotor position information when a motor works; a protection module: overcurrent protection of the motor; a user interface module: and the user regulates and controls the motor to work according to the requirement.
As shown in fig. 2, the rectifying-filtering circuit: the input alternating current realizes AC-DC rectification filtering through a diode and a capacitor, and the direct current is obtained through conversion and supplies power to a BUCK circuit and a power element. The BUCK step-down circuit steps down the direct current voltage obtained by rectification to 15V through the BUCK circuit. And the voltage of the 15V direct current is reduced to 5V through a DC-DC voltage reduction circuit by a DC-DC chip. The main components of the BUCK circuit comprise a switching tube MOSFET, a freewheeling diode, an energy storage inductor, an output filter capacitor and a load resistor, and the main components of the DC-DC voltage reduction circuit comprise a DC-DC chip, a freewheeling diode, an energy storage inductor, an output filter capacitor and a load resistor.
The control module consists of a main control chip customized MCU, an EEPROM 24C02 and peripheral circuits thereof. Wherein the MCU internally comprises an 8051MCU and a motor controller integrated with a 600V three-phase driving door. An angle Phase Locked Loop (PLL), a Field Oriented Control (FOC) sliding mode rotor position estimation (SMO), a space vector pwm (svpwm), and an analog Over Current Protection (OCP) may be estimated, among others. The scale of peripheral circuits can be greatly reduced, and the volume of the circuit board is smaller.
As shown in fig. 2, the power supply of the MCU is supplied with 15V and 5V dc power, the MCU outputs a three-phase circuit to control the power module to drive the motor, the rotor position information is detected by the MCU processing the waveform of the back electromotive force of the motor, and the protection and user interface modules are controlled by the MCU. Wherein:
the power module adopts six MOS tubes with N channels as power output elements and is directly controlled by the control module.
The rotor position information detection module is composed of an RC filter circuit, adopts a rotor position detection scheme based on counter electromotive force, does not need to be provided with a position sensor, and when the direct-current brushless motor runs, the counter electromotive force (EMF) of each phase winding is closely related to the position of the rotor. Because each phase winding is conducted alternately, at the moment that a certain phase is not conducted, the required rotor position information is obtained by detecting the waveform change of counter electromotive force at the zero point of the counter electromotive force waveform, and the regulation and control of the motor are realized. The sensorless motor can reduce the cost and the volume of the motor, and the reduction of the reliability of the motor possibly brought by the sensor is also avoided.
And the protection module realizes overcurrent protection by detecting the S-pole output current of three MOSFET tubes of the lower power arm. And the user interface module can regulate, control and display the rotating speed of the motor.
The invention solves the problem of miniaturization of the high-speed direct current brushless motor driver applied to the hair dryer, and improves the use convenience and the comfort. A high-integration master control MCU chip, an MOS tube power element and a sensorless position detection scheme are adopted, so that a smaller size is realized.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. The utility model provides a high-speed DC brushless motor driver circuit, its characterized in that, includes power rectification filtering module, control module, power module, rotor position detection module, protection module and user interface module, wherein:
the power supply rectification filtering module provides electric energy for the control module and the told direct current brushless motor;
the control module controls the power of the high-speed DC brushless motor through the power module, and performs overcurrent protection on the high-speed DC brushless motor through the protection module;
the rotor position detection module detects and collects rotor position information of the high-speed direct-current brushless motor during working and feeds the rotor position information back to the control module;
the user interface module is in communication connection with the power module.
2. The high speed DC brushless motor driver circuit of claim 1, wherein the power supply rectifying and filtering module comprises a rectifying and filtering circuit, a BUCK voltage reducing circuit, and a DC-DC voltage reducing circuit, wherein:
the rectification filter circuit realizes AC-DC rectification filtering to obtain direct-current voltage, and the direct-current voltage is used for supplying power to the BUCK voltage reduction circuit and the high-speed direct-current brushless motor;
the BUCK voltage reduction circuit reduces the voltage of the direct current to 15V;
the DC-DC voltage reduction circuit reduces the 15V direct current to 5V through the DC-DC chip.
3. The high speed dc brushless motor driver circuit of claim 1, wherein the control module comprises an MCU, an EEPROM memory, and peripheral circuitry, wherein:
the MCU is electrically connected with the EEPROM and the peripheral circuit.
4. A high speed dc brushless motor driver circuit according to claim 3, wherein the MCU comprises an 8051MCU and a motor controller integrating a 600V three phase drive gate.
5. The high speed dc brushless motor driver circuit of claim 1, wherein the power module uses a plurality of N-channel MOS transistors as power output elements.
6. The high speed dc brushless motor driver circuit of claim 1, wherein the user interface module is configured to regulate and control the motor speed and display the motor speed.
7. The high-speed direct current brushless motor driver circuit according to claim 1, wherein the protection module implements overcurrent protection by detecting an output current of an S pole of a MOSFET tube of the lower arm.
8. The high speed dc brushless motor driver circuit of claim 1, wherein the rotor position detection module detects based on a rotor position of a back emf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110055903.XA CN112737427B (en) | 2021-01-15 | 2021-01-15 | High-speed DC brushless motor driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110055903.XA CN112737427B (en) | 2021-01-15 | 2021-01-15 | High-speed DC brushless motor driver |
Publications (2)
| Publication Number | Publication Date |
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| CN112737427A true CN112737427A (en) | 2021-04-30 |
| CN112737427B CN112737427B (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110055903.XA Active CN112737427B (en) | 2021-01-15 | 2021-01-15 | High-speed DC brushless motor driver |
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| CN (1) | CN112737427B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541533A (en) * | 2021-07-15 | 2021-10-22 | 深圳华秋电子有限公司 | Brushless motor control method utilizing voltage doubling principle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009124776A (en) * | 2007-11-12 | 2009-06-04 | Panasonic Corp | Brushless DC motor drive device and ventilation blower equipped with the drive device |
| CN201854231U (en) * | 2010-09-16 | 2011-06-01 | 深圳拓邦股份有限公司 | Direct current brushless motor controller for bean milk machine |
| CN205232080U (en) * | 2015-12-08 | 2016-05-11 | 重庆森坦科技有限公司 | Motor driving device |
| CN105680739A (en) * | 2016-04-01 | 2016-06-15 | 武汉工程大学 | A sensorless controller for high speed brushless DC motor |
| CN106856387A (en) * | 2015-12-08 | 2017-06-16 | 重庆森坦科技有限公司 | A kind of driver for brushless DC motor |
| WO2018141394A1 (en) * | 2017-02-03 | 2018-08-09 | Arcelik Anonim Sirketi | Household appliance with brushless dc motor sensorless control scheme |
-
2021
- 2021-01-15 CN CN202110055903.XA patent/CN112737427B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009124776A (en) * | 2007-11-12 | 2009-06-04 | Panasonic Corp | Brushless DC motor drive device and ventilation blower equipped with the drive device |
| CN201854231U (en) * | 2010-09-16 | 2011-06-01 | 深圳拓邦股份有限公司 | Direct current brushless motor controller for bean milk machine |
| CN205232080U (en) * | 2015-12-08 | 2016-05-11 | 重庆森坦科技有限公司 | Motor driving device |
| CN106856387A (en) * | 2015-12-08 | 2017-06-16 | 重庆森坦科技有限公司 | A kind of driver for brushless DC motor |
| CN105680739A (en) * | 2016-04-01 | 2016-06-15 | 武汉工程大学 | A sensorless controller for high speed brushless DC motor |
| WO2018141394A1 (en) * | 2017-02-03 | 2018-08-09 | Arcelik Anonim Sirketi | Household appliance with brushless dc motor sensorless control scheme |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541533A (en) * | 2021-07-15 | 2021-10-22 | 深圳华秋电子有限公司 | Brushless motor control method utilizing voltage doubling principle |
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| Publication number | Publication date |
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| CN112737427B (en) | 2022-11-29 |
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