CN207530738U - High rotating speed the control system for non-brush direct currunt electromotors - Google Patents
High rotating speed the control system for non-brush direct currunt electromotors Download PDFInfo
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- CN207530738U CN207530738U CN201721387873.8U CN201721387873U CN207530738U CN 207530738 U CN207530738 U CN 207530738U CN 201721387873 U CN201721387873 U CN 201721387873U CN 207530738 U CN207530738 U CN 207530738U
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- rotating speed
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Abstract
The utility model discloses a kind of high rotating speed the control system for non-brush direct currunt electromotors, including circular ring shape circuit board, setting rectification module, controller and inverter module on circuit boards and 3 Hall sensors being distributed on the circuit board, the circuit board is fixedly connected with the stator of DC brushless motor and the perforation at center and the rotor of the DC brushless motor match, stator, rotor and the circuit board is coaxially disposed, and the Hall sensor is connect with the controller communication.Power supply is connect by rectification module with controller in the utility model, controller is connected by inverter module with DC brushless motor, and there are three Hall sensors for parallel connection between controller and DC brushless motor, the current position signal of Hall sensor acquisition DC brushless motor, and feed back to controller.
Description
Technical field
The utility model is related to motor control technology field, more particularly to a kind of high rotating speed Brush-Less DC motor control system
System.
Background technology
For the rotating speed of high rotating speed DC brushless motor at thousands of turns even 10,000 rpms or more, high rotating speed brush DC is electric
The rotor of machine starts by stationary state, improve rotating speed and stable operation during, be required to introduce electric machine control system to it
Operating carries out whole-process control, can improve its operational efficiency, reduces the risk that maloperation is brought, and existing control system high can not turn
DC brushless motor is accurately controlled under speed.
But the control method of existing lower-speed DC brushless electric machine has very big office in high rotating speed DC brushless motor
It is sex-limited, it constitutes a latent danger for the stable operation of motor.
Utility model content
The purpose of this utility model be for technological deficiency in the prior art, and provide a kind of high rotating speed direct current without
Brush motor control system.
Technical solution is used by realize the purpose of this utility model：
A kind of high rotating speed the control system for non-brush direct currunt electromotors, including circular ring shape circuit board, sets rectification on circuit boards
Module, controller and inverter module and 3 Hall sensors being distributed on the circuit board, the circuit board with it is straight
The stator of stream brushless motor is fixedly connected and the perforation at center and the rotor of the DC brushless motor match, and described determines
Son, rotor and circuit board coaxial arrangement, the Hall sensor are connect with the controller communication.
Three Hall sensors are uniformly distributed on circuit boards in 120 degree, and Hall corresponding with rotor zero degree passes
Sensor deviates the zero degree of the rotor.
0-7 ° of the zero degree left avertence of the relatively described rotor of one of Hall sensor.
The internal diameter of the perforation and the big 2-8mm of the outer diameter of rotor.
Further include the overcurrent protection module being connect with the controller communication.
Further include the under-voltage protective module being connect with the controller communication.
The rotating speed is at 8000 revs/min or more.
The controller includes receiving the Hall sensor signal and generating position difference signal to inversion
The data processing module of device and the electric current PWM controller to adjust size of current.
The controller is intelligent power module.
The rotor of the high rotating speed DC brushless motor is two-layer columnar structure, is provided with inside and outside two layers of magnet.
A kind of control method of control system, includes the following steps,
1) 3 Hall sensors persistently sense current changes of magnetic field and continuous feedback to controller,
2) controller receives the different on off states of 3 Hall sensors and produces 8 positions of corresponding consecutive variations
State,
3) six active position states in 8 location status are taken, controller is by the active position state control inversion
Sequence of modules is connected.
Controller receive 3 Hall sensors on off state simultaneously generate current position signal, by current position signal with
Preset value is compared, and obtains position difference signal, and inverter module carries out inversion processing to the position difference signal, and control is brushless
Direct current generator operates.
Compared with prior art, the beneficial effects of the utility model are：
Power supply is connect by rectification module with controller in the utility model, and controller passes through inverter module and brush DC
Motor is connected, and Hall sensor, Hall sensor to be adopted there are three parallel connections between controller and DC brushless motor
Collect the current position signal of DC brushless motor, and feed back to controller.Pass through the different triggering state of three Hall sensors
It would know that the physical location of rotor, be acquired by the electric signal of motor according to a graded, then realize opposing connection column
Triggering, the system can realize that carrying out high precision to high rotating speed DC brushless motor automatically controls.
Description of the drawings
Fig. 1 show the structure diagram of the high rotating speed the control system for non-brush direct currunt electromotors of the utility model.
Reference sign：
1st, power supply；2nd, rectification module；3rd, controller；4th, inverter module；5th, DC brushless motor；6th, Hall sensor A；7、
Hall sensor B；8th, Hall sensor C；9th, overcurrent protection module；10th, under-voltage protective module.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
The high rotating speed the control system for non-brush direct currunt electromotors of the utility model, including circular ring shape circuit board, is arranged on circuit board
On rectification module 2, controller 3 and inverter module 4 and 3 Hall sensors 6,7,8 for being distributed on the circuit board,
The circuit board is fixedly connected with the stator of DC brushless motor 5 and turn of the perforation at center and the DC brushless motor
Son matches, the stator, rotor and circuit board coaxial arrangement, the Hall sensor and the controller communication
Connection.The rotating speed of the high rotating speed DC brushless motor is at 8000 revs/min or more, the even brushless electricity of ultrahigh-speed DC
Machine, rotating speed is even at 10000 revs/min or more.
Power supply 1 is connect by rectification module with controller in the utility model, controller by inverter module and direct current without
Brush motor is connected, and there are three Hall sensor, Hall sensors for parallel connection between controller and DC brushless motor
The current position signal of DC brushless motor is acquired, and feeds back to controller.Pass through the different triggering shape of three Hall sensors
State is that would know that the physical location of rotor, is acquired by the electric signal of motor according to a graded, then realizes opposing connection column
Triggering, the system can realize to high rotating speed DC brushless motor carry out high precision automatically controls.
Specifically, three Hall sensors are uniformly distributed on circuit boards in 120 degree, corresponding with rotor zero degree
Hall sensor deviates the zero degree of the rotor, 0-7 ° of the zero degree left avertence of the relatively described rotor of one of Hall sensor
Such as 5 °.Deviate the setting of zero degree using Hall sensor, effectively avoid rotor dead zone, convenient for starting, keep system operating uniform,
Avoid unstability.
Wherein, the internal diameter of the perforation and the big 2-8mm of the outer diameter of rotor, are set using small―gap suture, utilize stent etc. pair
Its firm support positioning, it is effective that small―gap suture ensures that each Hall sensor sensing is stablized.
Further, the overcurrent protection module 9 being connect with the controller communication is further included.Overcurrent protection module can adopt
With commercial chip, during the actual current overrate that overcurrent protection module can be in the controller, overcurrent protection module can be cut off
System power makes system stalls.
Further include the under-voltage protective module 10 being connect with the controller communication.The under-voltage protective module can be in controller
In virtual voltage be less than rated value when, under-voltage protective module cutting system voltage makes system stalls.
The controller includes receiving the Hall sensor signal and generating position difference signal to inversion
The data processing module of device and the electric current PWM controller to adjust size of current, it is preferable that the controller is IPM
(Intelligent Power Module), i.e. intelligent power module, integrate device for power switching and driving circuit.
But also overvoltage has been internally integrated, the fault detection circuits such as overcurrent and overheat, and detection signal can be sent to CPU.It by
The tube core of high-speed low-power-consumption and the gate drive circuit and fast protection circuit of optimization are formed.Even if load accident situation occurs or makes
With improper, it is also ensured that IPM itself is without damage.
Preferably, to improve driving force, the rotor of the high rotating speed DC brushless motor is two-layer columnar structure, is set
It is equipped with inside and outside two layers of magnet.Using two-layer columnar, similar inside and outside two layers of mouse cage shape sets two layers of magnetic pole, enhances driving force, and
Improve stress distribution, improve rotor integral strength.
The control method of the control system of the high rotating speed DC brushless motor of the utility model, which is characterized in that including following
Step,
1) 3 Hall sensors persistently sense current changes of magnetic field and continuous feedback to controller,
2) controller receives the different on off states of 3 Hall sensors and produces 8 positions of corresponding consecutive variations
State, controller receives the on off state of 3 Hall sensors and generates current position signal, by current position signal with presetting
Value is compared, and obtains position difference signal, and inverter module 4 carries out inversion processing to the position difference signal, is controlled brushless straight
Galvanic electricity machine operates.
3) six active position states in 8 location status are taken, controller is by the active position state control inversion
Sequence of modules is connected.Specifically, the current position signal of DC brushless motor is divided into upper three bridge signal by the controller
With lower three bridge signal, inverter module carries out inversion processing to three bridge signals on this and lower three bridge signal, and inverter module is according to six shapes
State sequence is connected, and operates DC brushless motor.
Overcurrent protection module 9 can be in the actual current overrate in controller 3, and overcurrent protection module 9 can be with
Cutting system electric current, makes system stalls；In system startup and operation process, when the virtual voltage in controller 3 is less than
During rated value, 10 cutting system voltage of under-voltage protective module makes system stalls.
High rotating speed the control system for non-brush direct currunt electromotors belonging to the utility model, by high rotating speed DC brushless motor
High precision in control improves motor operation efficiency, reduces the risk that maloperation is brought；Meanwhile the system performs reliability
Good, good economy performance.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, under the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (10)
1. a kind of high rotating speed the control system for non-brush direct currunt electromotors, which is characterized in that including circular ring shape circuit board, be arranged on circuit board
On rectification module, controller and inverter module and three Hall sensors being distributed on the circuit board, it is described
Circuit board is fixedly connected with the stator of DC brushless motor and the rotor phase of the perforation at center and the DC brushless motor
Match, the stator, rotor and circuit board coaxial arrangement, the Hall sensor are connect with the controller communication.
2. high rotating speed the control system for non-brush direct currunt electromotors as described in claim 1, which is characterized in that three Halls pass
Sensor is uniformly distributed on circuit boards in 120 degree, and Hall sensor corresponding with rotor zero degree deviates the zero degree of the rotor.
3. high rotating speed the control system for non-brush direct currunt electromotors as claimed in claim 2, which is characterized in that one of hall sensing
0-7 ° of the zero degree left avertence of the relatively described rotor of device.
4. high rotating speed the control system for non-brush direct currunt electromotors as claimed in claim 2, which is characterized in that the internal diameter of the perforation
With the big 2-8mm of outer diameter of rotor.
5. high rotating speed the control system for non-brush direct currunt electromotors as described in claim 1, which is characterized in that further include and the control
The overcurrent protection module of device communication connection processed.
6. high rotating speed the control system for non-brush direct currunt electromotors as described in claim 1, which is characterized in that further include and the control
The under-voltage protective module of device communication connection processed.
7. high rotating speed the control system for non-brush direct currunt electromotors as described in claim 1, which is characterized in that the rotating speed is 8000
Rev/min or more.
8. high rotating speed the control system for non-brush direct currunt electromotors as described in claim 1, which is characterized in that the controller includes
To receive the Hall sensor signal and generate position difference signal to the data processing module of inverter and to
Adjust the electric current PWM controller of size of current.
9. high rotating speed the control system for non-brush direct currunt electromotors as described in claim 1, which is characterized in that the controller is intelligence
It can power module.
10. high rotating speed the control system for non-brush direct currunt electromotors as described in claim 1, which is characterized in that the high rotating speed is straight
The rotor for flowing brushless motor is two-layer columnar structure, is provided with inside and outside two layers of magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721387873.8U CN207530738U (en) | 2017-10-23 | 2017-10-23 | High rotating speed the control system for non-brush direct currunt electromotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721387873.8U CN207530738U (en) | 2017-10-23 | 2017-10-23 | High rotating speed the control system for non-brush direct currunt electromotors |
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| Publication Number | Publication Date |
|---|---|
| CN207530738U true CN207530738U (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721387873.8U Active CN207530738U (en) | 2017-10-23 | 2017-10-23 | High rotating speed the control system for non-brush direct currunt electromotors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659227A (en) * | 2017-10-23 | 2018-02-02 | 核工业理化工程研究院 | High rotating speed the control system for non-brush direct currunt electromotors and control method |
-
2017
- 2017-10-23 CN CN201721387873.8U patent/CN207530738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659227A (en) * | 2017-10-23 | 2018-02-02 | 核工业理化工程研究院 | High rotating speed the control system for non-brush direct currunt electromotors and control method |
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