CN109495028A - A kind of high voltage electric switch driving motor phase change method based on stator parameter detecting - Google Patents
A kind of high voltage electric switch driving motor phase change method based on stator parameter detecting Download PDFInfo
- Publication number
- CN109495028A CN109495028A CN201811368136.2A CN201811368136A CN109495028A CN 109495028 A CN109495028 A CN 109495028A CN 201811368136 A CN201811368136 A CN 201811368136A CN 109495028 A CN109495028 A CN 109495028A
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- China
- Prior art keywords
- driving motor
- high voltage
- commutation
- stator
- electric switch
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- 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
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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
Abstract
The present invention provides a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting, angle of rotor can be calculated according to driving motor stator voltage and electric current, and then judge whether to need commutation, each phase thyristor of selective triggering and conducting realizes the commutation operation of driving motor.The present invention provides a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting, can reduce the size of direct current generator itself, without influencing driving motor commutation operation, improves the reliability and anti-interference of high voltage electric switch operation.
Description
Technical field
The invention belongs to technical field of electric power detection, in particular to a kind of high voltage electric switch based on stator parameter detecting
Driving motor phase change method.
Background technique
High-voltage switch gear is switchgear important in electric system, it can cut off and bearing in closed high power circuit
Charged current, no-load current guarantee the reliability of electric system.When electric system is broken down, high-voltage switch gear cooperates relay to protect
Protection unit can cut off short circuit current and overload electric current, improve the safety of electric system, reduce economy caused by failure and damage
It loses.
The breaking-closing operating of high-voltage switch gear drives operating mechanism to complete by driving motor, and driving motor generally uses brushless
Direct current generator.Brushless DC motor structure is simple, easy to control.Traditional brshless DC motor is obtained by position sensor
The position signal of rotor increases the size of direct current generator itself due to the presence of position sensor, while making periphery
Hardware circuit is more complicated, it is therefore desirable to propose that a kind of new method obtains the position signal of DC motor rotor, reduce direct current
The size of motor itself, without influencing driving motor commutation operation.
Summary of the invention
The present invention provides a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting, being capable of basis
Driving motor stator voltage and electric current calculate angle of rotor, and then judge whether to need commutation, realize the commutation of driving motor
Operation reduces driving motor size.
The present invention provides a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting, the commutation
Method includes the following steps:
Step (1): the driving motor initial position is adjusted；
Step (2): the high voltage electric switch receives switching signal；
Step (3): the driving motor stator voltage sig and current signal are acquired；
Step (4): the signal of acquisition is filtered and A/D conversion process, and input control unit；
Step (5): being calculated counter electromotive force e according to three-phase brushless dc motor model,Wherein u
For the driving motor stator voltage, i is the driving motor stator current, and R is the driving motor winding equivalent resistance, L
For the driving motor winding equivalent inductance；
Step (6): being calculated the driving motor rotor velocity ω according to the counter electromotive force e and commutation coefficient k,
Step (7): the driving motor rotor velocity ω is subjected to integral calculation, obtains rotational angle theta；
Step (8): judging whether the driving motor angle of rotor θ is equal to 30 °, if be equal to 30 °, issue pulse signal into
Row commutation；If being not equal to 30 °, pulse signal is not issued and carries out commutation, return step (3)；
Step (9): trigger pulse carries out selective triggering and conducting to each phase thyristor based on the received, and then described in realization
Commutation operation in driving motor making process.
The driving motor initial position adjusts target: the rigid commutation position in position when starting the driving motor just
It sets.
Described control unit completes the calculating of step (5) to step (8) using DSP digital signal processor, and completes to touch
Send out the output of pulse.
The relevant parameter of the driving motor inputted by key-press input unit or completed by communication unit it is remotely located,
And information can be carried out by display screen and shown；The relevant parameter includes the driving motor winding equivalent resistance R, the drive
Dynamic machine winding equivalent inductance L, the commutation coefficient k.
The driving motor uses star-like connection, and two are conducted six work status mode of three-phase: synchronization, have two-phase around
Group conducting, is often conducted 60 °, every commutation of 30 ° of progress, commutation sequence are as follows: A/B-A/C-B/C-B/A-C/A-C/B.
Detailed description of the invention
Fig. 1 is a kind of process of the high voltage electric switch driving motor phase change method based on stator parameter detecting of the present invention
Figure.
Fig. 2 is three-phase brushless dc motor model equivalent circuit diagram.
Specific embodiment
With reference to the accompanying drawing to a kind of high voltage electric switch driving motor commutation side based on stator parameter detecting of the present invention
The specific embodiment of method elaborates.
As shown in Figure 1, the present invention provides a kind of high voltage electric switch driving motor commutation side based on stator parameter detecting
Method, the phase change method include the following steps:
Step (1): the driving motor initial position is adjusted；
Step (2): the high voltage electric switch receives switching signal；
Step (3): the driving motor stator voltage sig and current signal are acquired；
Step (4): the signal of acquisition is filtered and A/D conversion process, and input control unit；
Step (5): as shown in Fig. 2, counter electromotive force e is calculated according to three-phase brushless dc motor model,Wherein u is the driving motor stator voltage, and i is the driving motor stator current, and R is the driving
Machine winding equivalent resistance, L are the driving motor winding equivalent inductance；
Step (6): being calculated the driving motor rotor velocity ω according to the counter electromotive force e and commutation coefficient k,
Step (7): the driving motor rotor velocity ω is subjected to integral calculation, obtains rotational angle theta；
Step (8): judging whether the driving motor angle of rotor θ is equal to 30 °, if be equal to 30 °, issue pulse signal into
Row commutation；If being not equal to 30 °, pulse signal is not issued and carries out commutation, continues the driving motor being calculated after judgement
Whether angle of rotor θ is equal to 30 °；
Step (9): trigger pulse carries out selective triggering and conducting to each phase thyristor based on the received, and then described in realization
Commutation operation in driving motor making process.
The driving motor initial position adjusts target: the rigid commutation position in position when starting the driving motor just
It sets.
Described control unit completes the calculating of step (5) to step (8) using DSP digital signal processor, and completes to touch
Send out the output of pulse.
The relevant parameter of the driving motor inputted by key-press input unit or completed by communication unit it is remotely located,
And information can be carried out by display screen and shown；The relevant parameter includes the driving motor winding equivalent resistance R, the drive
Dynamic machine winding equivalent inductance L, the commutation coefficient k.
The driving motor uses star-like connection, and two are conducted six work status mode of three-phase: synchronization, have two-phase around
Group conducting, is often conducted 60 °, every commutation of 30 ° of progress, commutation sequence are as follows: A/B-A/C-B/C-B/A-C/A-C/B.
Finally it should be noted that only illustrating technical solution of the present invention rather than its limitations in conjunction with above-described embodiment.Institute
The those of ordinary skill in category field is it is to be understood that those skilled in the art can repair a specific embodiment of the invention
Change or equivalent replacement, but these modifications or change are being applied among pending claims.
Claims (5)
1. a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting, which is characterized in that the commutation
Method includes the following steps:
Step (1): the driving motor initial position is adjusted；
Step (2): the high voltage electric switch receives switching signal；
Step (3): the driving motor stator voltage sig and current signal are acquired；
Step (4): the signal of acquisition is filtered and A/D conversion process, and input control unit；
Step (5): being calculated counter electromotive force e according to three-phase brushless dc motor model,Wherein u is institute
Driving motor stator voltage is stated, i is the driving motor stator current, and R is the driving motor winding equivalent resistance, and L is institute
State driving motor winding equivalent inductance；
Step (6): being calculated the driving motor rotor velocity ω according to the counter electromotive force e and commutation coefficient k,
Step (7): the driving motor rotor velocity ω is subjected to integral calculation, obtains rotational angle theta；
Step (8): judging whether the driving motor angle of rotor θ is equal to 30 °, if being equal to 30 °, issues pulse signal and is changed
Phase；If being not equal to 30 °, pulse signal is not issued and carries out commutation, return step (3)；
Step (9): trigger pulse carries out the triggering and conducting of selectivity to each phase thyristor based on the received, and then realizes the driving
Commutation operation in motor making process.
2. a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting according to claim 1,
It is characterized in that, the driving motor initial position adjusts target: position when starting the driving motor just is just changed
Phase position.
3. a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting according to claim 2,
It is characterized in that, described control unit completes the calculating of step (5) to step (8) using DSP digital signal processor, and complete
The output of trigger pulse.
4. a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting according to claim 3,
It is characterized in that, the relevant parameter of the driving motor is inputted by key-press input unit or is remotely set by communication unit completion
It sets, and information can be carried out by display screen and shown；The relevant parameter includes the driving motor winding equivalent resistance R, institute
State driving motor winding equivalent inductance L, the commutation coefficient k.
5. a kind of high voltage electric switch driving motor phase change method based on stator parameter detecting according to claim 4,
It is characterized in that, the driving motor uses star-like connection, two are conducted six work status mode of three-phase: synchronization has two
Phase winding conducting, is often conducted 60 °, every commutation of 30 ° of progress, commutation sequence are as follows: A/B-A/C-B/C-B/A-C/A-C/
B。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368136.2A CN109495028A (en) | 2018-11-16 | 2018-11-16 | A kind of high voltage electric switch driving motor phase change method based on stator parameter detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368136.2A CN109495028A (en) | 2018-11-16 | 2018-11-16 | A kind of high voltage electric switch driving motor phase change method based on stator parameter detecting |
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| CN109495028A true CN109495028A (en) | 2019-03-19 |
Family
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|---|---|---|---|
| CN201811368136.2A Pending CN109495028A (en) | 2018-11-16 | 2018-11-16 | A kind of high voltage electric switch driving motor phase change method based on stator parameter detecting |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242154A (en) * | 2008-03-14 | 2008-08-13 | 重庆大学 | A built-in permanent magnetic brushless DC motor control system for no position sensor |
| CN101702608A (en) * | 2009-11-19 | 2010-05-05 | 沈阳工业大学 | Direct drive type permanent magnet motor operating mechanism of high-voltage isolating switch and control method thereof |
| CN105429522A (en) * | 2015-12-02 | 2016-03-23 | 江苏科技大学 | Method for identifying position of rotor of brushless direct current motor |
-
2018
- 2018-11-16 CN CN201811368136.2A patent/CN109495028A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242154A (en) * | 2008-03-14 | 2008-08-13 | 重庆大学 | A built-in permanent magnetic brushless DC motor control system for no position sensor |
| CN101702608A (en) * | 2009-11-19 | 2010-05-05 | 沈阳工业大学 | Direct drive type permanent magnet motor operating mechanism of high-voltage isolating switch and control method thereof |
| CN105429522A (en) * | 2015-12-02 | 2016-03-23 | 江苏科技大学 | Method for identifying position of rotor of brushless direct current motor |
Non-Patent Citations (2)
| Title |
|---|
| LI HAOMIN 等: "Research on Dynamic Characteristics of Permanent Magnet Brushless DC Motor Operating Mechanism in 126kV Vacuum Circuit Breaker", 《2013 2ND INTERNATIONAL CONFERENCE ON ELECTRIC POWER EQUIPMENT 》 * |
| 裴建林: "真空断路器电机操动机构控制策略的研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
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Application publication date: 20190319 |
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