CN108923699A - Brshless DC motor based on speed error turns off phase control method - Google Patents
Brshless DC motor based on speed error turns off phase control method Download PDFInfo
- Publication number
- CN108923699A CN108923699A CN201810917137.1A CN201810917137A CN108923699A CN 108923699 A CN108923699 A CN 108923699A CN 201810917137 A CN201810917137 A CN 201810917137A CN 108923699 A CN108923699 A CN 108923699A
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- CN
- China
- Prior art keywords
- brshless
- motor
- commutation
- control method
- commutation process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
-
- 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
Abstract
The invention discloses a kind of, and the brshless DC motor based on speed error turns off phase control method, and the control method is：Determine the switch-off power pipe in the three-phase full-bridge inverter in brshless DC motor commutation process；Brshless DC motor revolving speed Sa before record commutation；Record brshless DC motor revolving speed Sb in commutation process；If the absolute value that Sa subtracts Sb in commutation process is greater than the 5% of Sa absolute value, the power tube in three-phase full-bridge inverter with switch-off power pipe with bridge arm is opened；If the absolute value that Sa subtracts Sb in commutation process is not more than the 5% of Sa absolute value, the power tube in three-phase full-bridge inverter with switch-off power pipe with bridge arm is turned off, achievees the purpose that weaken brshless DC motor low speed commutation torque ripple.
Description
Technical field
The invention belongs to brshless DC motor control field, it is related to a kind of brshless DC motor more particularly to one kind is based on
The brshless DC motor of speed error turns off phase control method.
Background technique
Brshless DC motor has many advantages, such as structure is simple, power density is high, control is simple.In recent years, brushless straight
Galvanic electricity machine has obtained increasingly extensive application in the industrial circles such as high-performance speed-regulating system and servo-control system.
The commutation torque ripple generated when brshless DC motor commutation can cause motor vibrating, noise, limit such electricity
The application range of machine.By taking 120 ° of brshless DC motor conductings, three phase six state controls as an example, the brshless DC motor of low speed operation
When commutation, the current changing rate for turning off phase is excessive, returns the reason is that shutdown phase is electric in brshless DC motor commutation process
Stream does not add control, and this generates commutation torque ripples.So far, the shutdown phase in brshless DC motor commutation process is controlled
Technical research it is very few, the present patent application technology is not yet seen in report.
Summary of the invention
The purpose of the present invention is to provide a kind of brshless DC motor shutdown phase control method based on speed error,
Brshless DC motor low speed commutation torque ripple can be weakened.
In order to achieve the above objectives, solution of the invention is：
A kind of brshless DC motor shutdown phase control method based on speed error, includes the following steps：
Step 1: determining the switch-off power pipe in brshless DC motor commutation process in three-phase full-bridge inverter；
Step 2: brshless DC motor revolving speed Sa before record commutation；
Step 3: brshless DC motor revolving speed Sb in record commutation process；
Step 4: judging in commutation process | Sa-Sb | whether it is greater than 0.05 | Sa |；
Step 5: if | Sa-Sb | be greater than 0.05 | Sa |, open in three-phase full-bridge inverter with the same bridge arm of switch-off power pipe
Power tube；
Step 6: if | Sa-Sb | be not more than 0.05 | Sa |, turn off in three-phase full-bridge inverter with switch-off power Guan Tongqiao
The power tube of arm；
Step 7: step 4 is repeated, until commutation process terminates.
After adopting the above scheme, the present invention can control the shutdown phase in brshless DC motor commutation process, cut to reach
The effect of weak brshless DC motor low speed commutation torque ripple.
Detailed description of the invention
Fig. 1 is the flow chart of control method of the present invention.
Specific embodiment
Below with reference to attached drawing, technical solution of the present invention and beneficial effect are described in detail.
As shown in Figure 1, the present invention provides a kind of brshless DC motor shutdown phase control method based on speed error, including
Following steps：
Step 1: determining the switch-off power pipe in brshless DC motor commutation process in three-phase full-bridge inverter；
Step 2: brshless DC motor revolving speed Sa before record commutation；
Step 3: brshless DC motor revolving speed Sb in record commutation process；
Step 4: judging in commutation process | Sa-Sb | whether it is greater than 0.05 | Sa |；
Step 5: if | Sa-Sb | be greater than 0.05 | Sa |, open in three-phase full-bridge inverter with the same bridge arm of switch-off power pipe
Power tube；
Step 6: if | Sa-Sb | be not more than 0.05 | Sa |, turn off in three-phase full-bridge inverter with switch-off power Guan Tongqiao
The power tube of arm；
Step 7: step 4 is repeated, until commutation process terminates.
To sum up, the present invention is based on the brshless DC motors of speed error to turn off phase control method, can control brushless dc
Shutdown phase in machine commutation process, to have the function that weaken brshless DC motor low speed commutation torque ripple.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (1)
1. a kind of brshless DC motor based on speed error turns off phase control method, which is characterized in that include the following steps：
Step 1: determining the switch-off power pipe in brshless DC motor commutation process in three-phase full-bridge inverter；
Step 2: brshless DC motor revolving speed Sa before record commutation；
Step 3: brshless DC motor revolving speed Sb in record commutation process；
Step 4: judging in commutation process | Sa-Sb | whether it is greater than 0.05 | Sa |；
Step 5: if | Sa-Sb | it is greater than 0.05 | Sa |, open the function in three-phase full-bridge inverter with switch-off power pipe with bridge arm
Rate pipe；
Step 6: if | Sa-Sb | it is not more than 0.05 | Sa |, turn off in three-phase full-bridge inverter with switch-off power pipe with bridge arm
Power tube；
Step 7: step 4 is repeated, until commutation process terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917137.1A CN108923699A (en) | 2018-08-13 | 2018-08-13 | Brshless DC motor based on speed error turns off phase control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917137.1A CN108923699A (en) | 2018-08-13 | 2018-08-13 | Brshless DC motor based on speed error turns off phase control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108923699A true CN108923699A (en) | 2018-11-30 |
Family
ID=64404507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810917137.1A Withdrawn CN108923699A (en) | 2018-08-13 | 2018-08-13 | Brshless DC motor based on speed error turns off phase control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108923699A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599732A (en) * | 2009-06-01 | 2009-12-09 | 南京航空航天大学 | The control method of the BLDC position signalling phase error of back-emf zero crossing point reconstruction |
| CN104378026A (en) * | 2014-11-24 | 2015-02-25 | 江苏科技大学 | Brushless DC motor high-speed torque pulse control device and method |
| CN106487287A (en) * | 2016-09-18 | 2017-03-08 | 天津大学 | A kind of brshless DC motor commutation torque ripple minimization method |
| CN206727919U (en) * | 2016-11-25 | 2017-12-08 | 浙江中自机电控制技术有限公司 | A kind of switch reluctance machine driving circuit |
-
2018
- 2018-08-13 CN CN201810917137.1A patent/CN108923699A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599732A (en) * | 2009-06-01 | 2009-12-09 | 南京航空航天大学 | The control method of the BLDC position signalling phase error of back-emf zero crossing point reconstruction |
| CN104378026A (en) * | 2014-11-24 | 2015-02-25 | 江苏科技大学 | Brushless DC motor high-speed torque pulse control device and method |
| CN106487287A (en) * | 2016-09-18 | 2017-03-08 | 天津大学 | A kind of brshless DC motor commutation torque ripple minimization method |
| CN206727919U (en) * | 2016-11-25 | 2017-12-08 | 浙江中自机电控制技术有限公司 | A kind of switch reluctance machine driving circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181130 |