CN109921695A - A kind of starting method of brushless motor - Google Patents
A kind of starting method of brushless motor Download PDFInfo
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- CN109921695A CN109921695A CN201910057251.6A CN201910057251A CN109921695A CN 109921695 A CN109921695 A CN 109921695A CN 201910057251 A CN201910057251 A CN 201910057251A CN 109921695 A CN109921695 A CN 109921695A
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- motor
- starting
- stator winding
- hall signal
- brushless motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
Since motor is in starting and normal operation, output power is had differences, and power constantly increases by zero when starting, and power is more stable when normal operation, and motor rotation speed increases constantly when starting, and when normal work, motor rotation speed is more stable；Therefore motor is starting and is operating normally the same excitation driver' s timing given to will lead to motor operation unstable；The present invention has opened a kind of starting method of brushless motor, motor start circuit includes brushless motor, Hall sensor, inverter, driving circuit, controller, brushless motor include rotor and 2 concatenated stator winding coils, and the present invention is using adjustment startup stage stator winding energization pulse duty cycle, and the mode of adjustment starting Energizing cycle, stability when electric motor starting is improved, while reducing noise when starting, reduces vibration when starting.
Description
Technical field
The present invention relates to the start-up technique field of motor more particularly to the starting methods of direct current generator.
Background technique
Since motor is in starting and normal operation, output power is had differences, when starting power by zero constantly
Increasing, power is more stable when normal operation, meanwhile, when starting, motor rotation speed increases constantly, when normal work, electricity
Machine velocity of rotation is more stable.Therefore motor will lead to motor in the same excitation driver' s timing started and normal operation is given
Fluctuation of service.In addition, if noise can be larger when starting brief acceleration is larger.
In the prior art, electric motor starting is when operating normally with motor using identical excitation driver' s timing, i.e., in motor
Startup stage and motor normal operating phase, the elder generation of identical, each road control signal sending of each road control signal that main controller issues
Sequence and the duty ratio of each road control signal are identical afterwards.Using the driving method, it is unstable that there are motor operations, and starting
When the larger problem of noise.
Summary of the invention
Noise when in order to improve stability when electric motor starting and reduce starting, the invention patent propose a kind of electricity
The Starting mode of machine.
The technical scheme of the invention to solve the technical problem is:
A kind of starting method of brushless motor, motor start circuit include brushless motor, Hall sensor, inverter, drive
Dynamic circuit, controller, brushless motor include rotor and 2 concatenated stator winding coils, and the rotor is with two pairs of magnetic poles
Permanent magnet, electric motor starting mode: firstly, the signal of controller detection Hall sensor output, believes according to the Hall that detects
Number driving generates the electric current of direction initialization, and stator winding, which generates rotating excitation field, makes rotor start to rotate, when electric motor starting stator around
Group excitation pulse duty cycle be motor operate normally when stator winding energization pulse duty cycle a quarter or be less than motor just
The a quarter of stator winding energization pulse duty cycle when often running, starting Energizing cycle are that excitation is all when motor works normally
The a quarter of phase, or less than motor work normally when Energizing cycle a quarter, starting start after, controller timing
Hall signal is detected, completes to drive if the hall signal detected changes, into normal mode of operation, if detecting suddenly
You have not been changed signal；Then continue the electric current of driving generation with former direction initialization opposite direction, the detection Hall letter of controller timing
Number, until the hall signal detected changes, starting terminates, and motor enters normal mode of operation.
Energizing cycle is the summation of actuation duration and time of afterflow, and in the actuation duration, pipe is opened in two drivings simultaneously, electricity
Stream constantly increases, and power supply constantly delivers power to inside stator winding, and motor stator winding constantly stores electromagnetic energy
Amount, while output mechanical energy；In time of afterflow, driving tube on two is simultaneously closed off, and two lower driving tubes are opened, electric current is not simultaneously
Reduce disconnectedly, power supply stopping supplies energy to motor, motor stator winding constantly external output mechanical energy amount, until stator
Early period, the electromagnetic energy of storage exhausted.The present invention is by shortening Energizing cycle, so that input and the mechanical energy of electric energy energy
Output and device itself run energy consumed by work etc. and reach dynamic equilibrium, to guarantee the stable rotation of motor cycle.
The good effect that technical solution of the present invention generates is as follows:
(1) motor can be guaranteed in startup stage stable operation；
(2) noise when electric motor starting is reduced；
(3) mechanical shock in start-up course is reduced.
Detailed description of the invention
Fig. 1 is the logic diagram of electric motor starting
Specific embodiment
One embodiment of the present of invention is:
Motor start circuit of the present invention includes brushless motor, Hall sensor, inverter, driving circuit, controller, institute
Stating brushless motor includes rotor and 2 concatenated stator winding coils.The mode of driving motor starting is as shown in Figure 1, start to open
Dynamic motor (entering state 1), firstly, the output hall signal (entering state 2) of detection Hall sensor, judges hall signal
For height? (entering state 3), if hall signal is height, driving generates clockwise direction current excitation stator winding and (enters
State 4), the rotating excitation field that then stator generates rotates rotor towards predetermined direction, at this time in order to improve stabilization when starting
Property, the duty ratio of pumping signal takes 1/8th (when normal operations, duty ratio 1/2), it is normal for motor to start Energizing cycle
The a quarter of Energizing cycle when work, after starting starts, the detection hall signal of controller timing, main controller judges Hall
Does is signal low? (entering state 6), if hall signal is lower, i.e., hall signal has changed, and shows that rotor has rotated
To next polar region, then determine that start-up course terminates and (enters state 8), the subsequent normal mode of operation that enters (enters state
9).In state 6, if hall signal is height, driving generates counter clockwise direction current excitation stator winding (entering state 5),
Do the detection hall signal of controller timing, main controller determine hall signal for height? if hall signal is height, start knot
Beam, if hall signal be it is low, drive and generate clockwise direction current excitation stator winding (enter state 4), ibid divide
Analysis, into the process of loop start.
Do you if starting to detect hall signal in state 2, judge hall signal for height? (entering state 3), if it is
Low, driving generates anti-clockwise current excitation stator winding (entering state 5), and the rotating excitation field that then stator generates makes
It obtains rotor to rotate towards predetermined direction, at this time in order to improve stability when starting, the duty ratio of pumping signal takes 1/8th
(when normal operation, duty ratio 1/2), starting Energizing cycle are a quarter of Energizing cycle when motor works normally, starting
Does the detection hall signal of controller timing, main controller judge hall signal for height after beginning? (entering state 7), if suddenly
You get higher signal, i.e., hall signal has changed, and show that rotor has rotated to next polar region, then determine to start
Journey terminates and (enters state 8), subsequent to enter normal mode of operation (entering state 9).In state 7, if hall signal is
Low, driving generates clockwise direction current excitation stator winding (entering state 4), and the detection hall signal of controller timing is main
Control device and determine that hall signal is low? if hall signal be it is low, starting terminate, if hall signal be height, drive production
Raw counter clockwise direction current excitation stator winding (entering state 5), ibid analyzes, into the process of loop start.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to embodiment, all categories
Technical solution under thinking of the present invention all belongs to the scope of protection of the present invention.It should be pointed out that for the common of the art
For technical staff, several modifications and variations without departing from the principles of the present invention should be regarded as protection model of the invention
It encloses.
Claims (1)
1. a kind of starting method of brushless motor, motor start circuit includes brushless motor, Hall sensor, inverter, driving
Circuit, controller, the brushless motor include rotor and 2 concatenated stator winding coils, which is characterized in that firstly, control
Device detect Hall sensor output signal, according to detect hall signal driving generate direction initialization electric current, stator around
Group, which generates rotating excitation field, makes rotor start to rotate, when stator winding energization pulse duty cycle is that motor operates normally when electric motor starting
The a quarter of stator winding energization pulse duty cycle or stator winding energization pulse duty cycle when being operated normally less than motor
A quarter starts a quarter of Energizing cycle when Energizing cycle is motor normal work or is less than sharp when motor works normally
The a quarter in period is encouraged, after starting starts, the detection hall signal of controller timing, if the hall signal detected changes
Driving is completed, start completion, motor enters normal mode of operation；If the hall signal detected has not been changed；Then continue driving to produce
The raw electric current with former direction initialization opposite direction, the detection hall signal of controller timing, until the hall signal detected changes
Become, starting terminates, and motor enters normal mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910057251.6A CN109921695B (en) | 2019-01-21 | 2019-01-21 | Brushless motor starting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910057251.6A CN109921695B (en) | 2019-01-21 | 2019-01-21 | Brushless motor starting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109921695A true CN109921695A (en) | 2019-06-21 |
| CN109921695B CN109921695B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910057251.6A Active CN109921695B (en) | 2019-01-21 | 2019-01-21 | Brushless motor starting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081389A (en) * | 2020-09-04 | 2020-12-15 | 中物智建(武汉)科技有限公司 | Man-machine cooperative type clamping equipment and linear lifting control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546950A (en) * | 2008-03-26 | 2009-09-30 | 松下电工株式会社 | Method for controlling operation of a linear vibration motor |
| CN102075128A (en) * | 2011-01-21 | 2011-05-25 | 南京航空航天大学 | Rotor magnetic shunt mixed excitation synchronous motor driving system and current control method thereof |
| CN103926508A (en) * | 2014-04-24 | 2014-07-16 | 上海奥波电子有限公司 | Detection system and method used for motor stator winding |
| JP2017143612A (en) * | 2016-02-08 | 2017-08-17 | 北斗制御株式会社 | Sensorless starting method for three-phase brushless motor |
| CN111669100A (en) * | 2019-03-07 | 2020-09-15 | 惠州拓邦电气技术有限公司 | Switched reluctance motor operation control method and system |
-
2019
- 2019-01-21 CN CN201910057251.6A patent/CN109921695B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546950A (en) * | 2008-03-26 | 2009-09-30 | 松下电工株式会社 | Method for controlling operation of a linear vibration motor |
| CN102075128A (en) * | 2011-01-21 | 2011-05-25 | 南京航空航天大学 | Rotor magnetic shunt mixed excitation synchronous motor driving system and current control method thereof |
| CN103926508A (en) * | 2014-04-24 | 2014-07-16 | 上海奥波电子有限公司 | Detection system and method used for motor stator winding |
| JP2017143612A (en) * | 2016-02-08 | 2017-08-17 | 北斗制御株式会社 | Sensorless starting method for three-phase brushless motor |
| CN111669100A (en) * | 2019-03-07 | 2020-09-15 | 惠州拓邦电气技术有限公司 | Switched reluctance motor operation control method and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081389A (en) * | 2020-09-04 | 2020-12-15 | 中物智建(武汉)科技有限公司 | Man-machine cooperative type clamping equipment and linear lifting control method |
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| Publication number | Publication date |
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| CN109921695B (en) | 2023-04-28 |
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Effective date of registration: 20230413 Address after: 311100 Room 313, South Building, No. 2 Chaofeng East Road, Development Zone, Yuhang District, Hangzhou City, Zhejiang Province Applicant after: Blue Ocean Intelligent Technology (Hangzhou) Co.,Ltd. Address before: 201518 No. 505, Rongchang Road, LvXiang Town, Jinshan District, Shanghai Applicant before: LANSEA INTELLIGENT TECHNOLOGY Co.,Ltd. |
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