CN110120761A - A kind of brshless DC motor - Google Patents
A kind of brshless DC motor Download PDFInfo
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- CN110120761A CN110120761A CN201711269683.0A CN201711269683A CN110120761A CN 110120761 A CN110120761 A CN 110120761A CN 201711269683 A CN201711269683 A CN 201711269683A CN 110120761 A CN110120761 A CN 110120761A
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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
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
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Abstract
The present embodiments relate to electronic technology fields, disclose a kind of brshless DC motor.In the present invention, brshless DC motor, comprising: motor body, drive control unit and the inversion unit comprising the combination of N number of power switch tube, N are the integer greater than 2；Motor body is electrically connected with inversion unit；Drive control unit combines connection with N number of power switch tube respectively, in inversion unit starting, combines the conducting information be connected for the first time for recording N number of power switch tube, and the conducting for the first time of N number of power switch tube combination is controlled according to conducting information.Brshless DC motor of the invention extends the service life of each power switch tube, enhances the service life of the brshless DC motor.
Description
Technical field
The present embodiments relate to electronic technology field, in particular to a kind of brshless DC motor.
Background technique
Currently, brshless DC motor (Brushless Direct Current Motor, referred to as " BLCD "), has overcome
The birth defects of brushless motor, with electronic commutator instead of mechanical commutator, so brshless DC motor had both had directly
The features such as galvanic electricity machine good speed adjusting performance, and there is simple ac motor structure, non-commutation spark, reliable for operation and be easy to tie up
The advantages that shield.The essence of brshless DC motor is DC supply input, and direct current is converted to alternating current using electronic inverter,
The three-phase AC permanent magnet synchronous motor for thering is rotor-position to feed back.Brshless DC motor obtains in fields such as household electrical appliances, robot, electric vehicles
It obtained and was widely applied.
At least there are the following problems in the prior art for inventor's discovery: brshless DC motor starts from totally stationary state
When, the rush of current that the power switch tube first turned in driver is subject to is big, and current Brushless DC drive motor
During startup, the power switch tube of fixed position, after prolonged use, the fixation position is often connected in driver for the first time
The speed of performance decline of power switch tube will be faster than other power switch tubes, cause fixed position power switch tube and its
The performance of his power switch tube is different, influences the performance of brshless DC motor, simultaneously as prolonged be connected fixes position
Power switch tube causes the probability of damage of the power switch tube of fixed position to be much higher than other power switch tubes, shortens
The service life of brshless DC motor.
Summary of the invention
Embodiment of the present invention is designed to provide a kind of brshless DC motor, and extend each power switch tube uses the longevity
Life, enhances the service life of brshless DC motor.
In order to solve the above technical problems, embodiments of the present invention provide a kind of brshless DC motor, comprising: motor sheet
Body, drive control unit and the inversion unit comprising the combination of N number of power switch tube, N are the integer greater than 2；Motor body with it is inverse
Become unit electrical connection；Drive control unit combines connection with N number of power switch tube respectively, in inversion unit starting, is used for
It records N number of power switch tube and combines the conducting information be connected for the first time, and N number of power switch tube combination is controlled according to conducting information
It is connected for the first time.
Embodiment of the present invention in terms of existing technologies, due to drive control unit respectively with N number of power switch tube
Combination connection can be connected for the first time in fast recording N number of power switch tube combination by connection relationship when inversion unit starts
Information is connected, in inversion unit starting, drive control unit can determine to be connected for the first time according to the conducting information of record
Power switch tube combination avoids inversion unit on startup to control the conducting for the first time of N number of power switch tube combination, first
The secondary power switch tube combination that fixed position is connected, to balance the conducting be connected for the first time time of each power switch tube combination
Number improves the globality of inversion unit so that the performance gap of the power switch tube in the combination of N number of power switch tube reduces
Can, enhance the service life of brshless DC motor.
In addition, conducting information includes: that the location information that each power switch tube combination is connected for the first time and each power are opened
Close the conducting mark that pipe combination is connected for the first time.Be connected include in information power switch tube the location information be connected for the first time and for the first time
The conducting of conducting identifies, and can quickly determine power switch tube combination to be connected for the first time when inversion unit starts.
In addition, conducting mark is used to indicate whether the power switch tube combination in inversion unit starting is connected for the first time, drive
Control unit is specifically used for: in the case where inversion unit receives enabled instruction, according to default the leading of N number of power switch tube combination
Clear and coherent sequence, the conducting for detecting the combination of each power switch tube identifies whether that instruction is connected for the first time, if so, detecting next group of function
Otherwise the power switch tube combination of current detection is connected in the combination of rate switching tube for the first time.Driving unit according to default turn-on sequence,
It detects whether the combination of each power switch tube indicates to be connected for the first time, avoids the occurrence of the feelings to the combination missing inspection of N number of power switch tube
Condition, meanwhile, it can quickly determine power switch tube combination to be connected for the first time, enhance the starting speed of inversion unit.
In addition, the conducting number that conducting mark is connected for the first time for marking power switch tube to combine, drive control unit tool
Body is used for: in the case where inversion unit receives enabled instruction, according to the default turn-on sequence that N number of power switch tube combines, inspection
The conducting for surveying the combination of each power switch tube identifies marked conducting number；The conducting combined according to N number of power switch tube
Number and default turn-on sequence determine power switch tube combination to be connected for the first time, and determining function to be connected for the first time are connected
The combination of rate switching tube.Driving unit according to default turn-on sequence, detect each power switch tube combination be connected for the first time lead
Logical number avoids the occurrence of the case where combining missing inspection to N number of power switch tube, meanwhile, it, can be fast and accurately by the way that number is connected
Determine power switch tube combination to be connected for the first time.
In addition, drive control unit is also used to: storing the default turn-on sequence of N number of power switch tube combination.Allow to
It is flexible that default turn-on sequence is set.
In addition, inversion unit is the Three-phase full-bridge inversion unit for including 3 bridge arms, each bridge arm is by multiple power switch
Pipe parallel connection is constituted, and the intermediate node of 3 bridge arms is electrically connected with three interfaces of motor body respectively, wherein each power switch
The power switch tube that pipe combination includes is belonging respectively to different bridge arms.
In addition, brshless DC motor further include: position sensor；Position sensor be arranged on motor body, respectively with
Motor body is connected with drive control unit, combines the location information be connected for the first time for detecting N number of power switch tube.Pass through position
The conducting situation for the first time of N number of power switch tube combination can fast and accurately be determined by setting sensor.
In addition, power switch tube is Metal Oxide Semiconductor Field Effect Transistor.Power switch tube is metal oxide
Semiconductor field effect transistor is convenient for the control of drive control unit.
It in addition, N is 6, and include 2 power switch tubes in the combination of each power switch tube, wherein drive control unit
It is electrically connected with each power switch tube.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of inside connection schematic diagram of the brshless DC motor provided in first embodiment according to the present invention；
Fig. 2 is that a kind of specific circuit connection of the brshless DC motor provided in first embodiment according to the present invention is shown
It is intended to；
Fig. 3 is a kind of knot of the drive control unit of the brshless DC motor provided in first embodiment according to the present invention
Structure schematic diagram；
Fig. 4 is a kind of knot of the drive control unit of the brshless DC motor provided in second embodiment according to the present invention
Structure schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
The first embodiment of the present invention is related to a kind of brshless DC motors.The brshless DC motor, comprising: motor body
101, drive control unit 102 and the inversion unit 103 comprising the combination of N number of power switch tube, N are the integer greater than 2.Fig. 1 is
Connection schematic diagram inside the brshless DC motor.
Motor body 101 is electrically connected with inversion unit 103；Drive control unit 102 is combined with N number of power switch tube respectively
Connection combines the conducting information be connected for the first time for recording N number of power switch tube, and in inversion when inversion unit 103 starts
When unit 103 starts, the conducting for the first time of N number of power switch tube combination is controlled according to conducting information.
Specifically, multiple power switch tubes, and combined mode root be may include in the combination of each power switch tube
It needs to be determined that, for example, may include 2 power switch tubes in the combination of each power switch tube, it can also be wrapped according to actual circuit
Containing 4 power switch tubes.Wherein, there are the power switch tubes of repeatable position in 6 power switch tube combinations, for example, it is assumed that having 6
A power switch tube, respectively Q1, Q2, Q3, Q4, Q5, Q6 have 6 power switch tube combinations, and each power switch tube combines
In include 2 power switch tubes, then the 6 power switch tubes combination constituted can be with are as follows: Q1 and Q6, Q2 and Q6, Q2 and Q4, Q3 and
Q4, Q3 and Q5, Q1 and Q5.Certainly, the value of N can be 3,4,5 etc..In present embodiment, N 6, and each power switch
It include 2 power switch tubes in pipe combination, wherein drive control unit 102 is electrically connected with each power switch tube.For example,
Assuming that there is 6 power switch tube combinations, Q1 and Q6, Q2 and Q6, Q2 and Q4, Q3 and Q4, Q3 and Q5, Q1 and Q5, then 6 power are opened
It closes in pipe combination and contains the power switch tube of 6 different locations, be respectively as follows: Q1, Q2, Q3, Q4, Q5, Q6, then drive control list
Member 102 is electrically connected with Q1, Q2, Q3, Q4, Q5, Q6 respectively.
In one specific embodiment, inversion unit 103 is the Three-phase full-bridge inversion unit for including 3 bridge arms, often
A bridge arm is made of multiple power switch tube parallel connections, and the intermediate node of 3 bridge arms is electric with three interfaces of motor body 101 respectively
Connection, wherein the power switch tube that each power switch tube combination includes is belonging respectively to different bridge arms.Specific circuit connection
Figure is as shown in Figure 2.
Specifically, each bridge arm can be 2 power switch tube parallel connections, open alternatively, each bridge arm can be 4 power
Parallel connection two-by-two is closed, is illustrated so that each bridge arm is 2 power switch tubes parallel connections as an example in present embodiment, as shown in Figure 2,
Power switch tube Q1 and power switch tube Q2 is as a bridge arm, power switch tube Q3 and power switch tube Q4 as a bridge
Arm, power switch tube Q5 and power switch tube Q6 are as a bridge arm.Two capacitors of parallel connection are gone back in Fig. 2, to realize exchange-
The conversion of DC-AC.6 pins of drive control unit 102 are connect with the grid of 6 power switch tubes respectively, i.e., such as Fig. 2
Shown in, the pin S1 of drive control unit 102 is connect with the grid of power switch tube Q1, pin S2 and power switch tube Q2's
Grid connection, pin S3 are connect with the grid of power switch tube Q3, and pin S4 is connect with the grid of power switch tube Q4, pin S5
It is connect with the grid of power switch tube Q5, pin S6 is connect with the grid of power switch tube Q6.
Drive control unit 102 is discussed in detail below in conjunction with the specific circuit diagram in Fig. 2 and records N number of power switch tube
Combined conducting information, and in the inversion unit 103 starting, leading for N number of power switch tube combination is controlled according to conducting information
Logical detailed process.
In one specific embodiment, conducting information includes: the position letter that each power switch tube combination is connected for the first time
The conducting mark that breath and the combination of each power switch tube are connected for the first time.
Specifically, when inversion unit 103 starts, the power switch tube be connected at first in N number of power switch combination is combined
It is defined as the conducting for the first time of power switch combination.For example, there is 3 power switch tube combinations, respectively power switch tube is combined
1, power switch tube combination 2 and power switch tube combination 3, it is assumed that when inversion unit 103 starts, in 3 power switch tube combinations
The power switch tube of power switch tube combination 1 is connected at first, and the function in power switch tube combination 2 and power switch tube combination 3
Rate switching tube does not turn on also at this time, it can be said that power switch tube combination 1 is connected for the first time when inversion unit 103 starts.6 function
Rate switching tube is connect according to mode shown in Fig. 2 with drive control unit 102, drive control unit 102 according to pin S1~
The level value of S6 can determine the location information of the power switch tube be connected for the first time combination, for example, it is assumed that drive control unit
When 102 starting, in drive control unit 102 level value of pin S1 and pin S6 be first be high level, then can determine with
The power switch tube Q1 of the S1 pin connection and power switch tube Q6 connecting with S6 pin is to be connected for the first time, i.e. power switch tube group
Q1 and Q6 is closed to be connected for the first time.
In one specific embodiment, conducting mark is used to indicate the power switch tube when the inversion unit 103 starts
Whether combination is connected for the first time, and drive control unit 102 is specifically used for: in the case where inversion unit 103 receives enabled instruction, pressing
According to the default turn-on sequence of N number of power switch tube combination, the conducting for detecting the combination of each power switch tube identifies whether to indicate
It is connected for the first time, if so, otherwise detect next group of power switch tube combination is connected the power switch tube group of current detection for the first time
It closes.
100 specifically, inversion unit 102 combines positive/negative rotaring signal to generate effective six state encodings signal: 101,
110,010,011,001, connection type as shown in Figure 2 is handled by logic establishment, i.e. power switch tube Q1 and Q6 conducting,
Q2 and Q6 conducting, Q2 and Q4 conducting, Q3 and Q4 conducting, Q3 and Q5 conducting, Q1 and Q5 conducting, are connected 6 according to the turn-on sequence
Power switch tube combination, can be driven motor body 101.In present embodiment, the default conducting of 6 power switch tubes combination is suitable
Sequence can be using above driving sequence, i.e., default turn-on sequence are as follows: power switch tube Q1 and Q6 conducting, Q2 and Q6 conducting, Q2
With Q4 conducting, Q3 and Q4 conducting, Q3 and Q5 conducting, Q1 and Q5 conducting.
When drive control unit 102 receives the enabled instruction of starting inversion unit 103, drive control unit 102 is pressed
According to default turn-on sequence, the conducting mark of each power switch tube combination is successively detected, if conducting mark instruction is connected for the first time,
Show that the power switch tube combination of current detection was connected for the first time in inversion unit starting, then detects next group of power switch tube
Combination；If conducting mark instruction does not turn on for the first time, show the power switch tube combination of current detection when inversion unit 102 starts
It did not turned on for the first time, drive control unit 102 determines that the power switch tube combination of current detection is that this inversion unit 103 starts
When the power switch tube combination that first turns on, then the power switch tube combination of current detection is connected for the first time, and by the power switch
The conducting mark of pipe is changed to be connected.For example, it is assumed that the combination of 6 power switch tubes are as follows: Q1 and Q6, Q2 and Q6, Q2 and Q4, Q3 and
Q4, Q3 and Q5, Q1 and Q5, it is assumed that conducting is identified as D, and is connected for the first time with " 1 " instruction in inversion unit starting, " 0 " instruction
It is not turned on for the first time in inversion unit starting；When inversion unit receives enabled instruction, the conducting of detection Q1 and Q2 combination first
Mark detects next group of power switch tube if being " 1 " if the conducting mark D1 that Q1 and Q2 is combined and combines Q2 and Q6, if Q2 and Q6 group
The conducting mark D2 of conjunction is " 0 ", then drive control unit determines that the power switch tube group that first turns on is combined into Q2 and Q6, and by D2
It is changed to " 1 ".
It is noted that if the conducting mark of N number of power switch tube combination indicates to be connected for the first time, drive control list
The conducting that N number of power switch tube combines is identified and all is changed to not turn on by member 102, is examined again according to default turn-on sequence
It surveys.
In addition, drive control unit 102 is also used to store the default turn-on sequence of N number of power switch tube combination.Wherein, it drives
Dynamic control unit 102 includes storage unit 1021, and it is suitable to store the default conducting that N number of power switch tube combines by storage unit 1021
Sequence, certainly, storage unit 1021 can also store the conducting information of N number of power switch tube combination.Certainly, drive control unit packet
Processor 1022 is included, drive control unit 102 can be single-chip microcontroller, and the structure of the drive control unit is as shown in Figure 3.
Embodiment of the present invention in terms of existing technologies, due to drive control unit respectively with N number of power switch tube
Combination connection can be connected for the first time in fast recording N number of power switch tube combination by connection relationship when inversion unit starts
Information is connected, in inversion unit starting, drive control unit can determine to be connected for the first time according to the conducting information of record
Power switch tube combination avoids inversion unit on startup to control the conducting for the first time of N number of power switch tube combination, first
The secondary power switch tube combination that fixed position is connected, to balance the conducting be connected for the first time time of each power switch tube combination
Number improves the globality of inversion unit so that the performance gap of the power switch tube in the combination of N number of power switch tube reduces
Can, enhance the service life of brshless DC motor.
Second embodiment of the present invention is related to a kind of brshless DC motor.In second embodiment of the invention, conducting
The conducting number be connected for the first time for marking power switch tube to combine is identified, drive control unit 102 is specifically used for: in inversion list
In the case that member receives enabled instruction, according to the default turn-on sequence that N number of power switch tube combines, each power switch is detected
The conducting of pipe combination identifies marked conducting number；It is suitable according to the conducting number of N number of power switch tube combination and default conducting
Sequence determines power switch tube combination to be connected for the first time, and determining power switch tube combination to be connected for the first time is connected.
Specifically, drive control unit 102 can also include counter 1023, pass through when inversion unit 103 starts
Counter 1023 records the conducting number of the power switch tube combination first turned on, the structure of drive control unit 1022 such as Fig. 3
It is shown.Certainly, it counts N number of power switch tube and combines the conducting number be connected for the first time, can also be recorded using other modes, it is unlimited
The mode mentioned in present embodiment.When drive control unit 102 receives the enabled instruction of starting inversion unit 103,
According to default turn-on sequence, the conducting for successively detecting the combination of each power switch tube is marked drive control unit 102
Conducting number, drive control unit chooses power switch tube corresponding to conducting number minimum value according to default turn-on sequence
It combines and is combined as power switch tube to be connected for the first time；Certainly, if there are 2 or more groups in the combination of N number of power switch tube
When the conducting identical situation of number of conjunction, power switch tube to be connected for the first time is determined according to the sequencing of default turn-on sequence
Combination.Wherein, preset turn-on sequence with it is roughly the same in first embodiment, details are not described herein again.It will illustrate below detailed
Introduce the process:
For example, such as circuit connecting mode in Fig. 2, it is assumed that have 6 power switch tube combinations, then 6 power switch tube combinations
Default turn-on sequence be power switch tube Q1 and Q6 combination, Q2 and Q6 combination, Q2 and Q4 combination, Q3 and Q4 combination, Q3 and Q5
Combination, Q1 and Q5 combination, it is assumed that the conducting number that is marked of conducting mark D1 of Q1 and Q2 combination is 4 times, Q2 and Q6 combination
The conducting number that conducting mark D2 is marked is 4 times, and the conducting number that the conducting mark D3 of Q2 and Q4 combination is marked is 4 times,
The conducting number that the conducting mark D4 of Q3 and Q4 combination is marked is 3 times, and what the conducting mark D5 of Q3 and Q5 combination was marked leads
Logical number is 3 times, and the conducting number that the conducting mark D6 of Q1 and Q5 combination is marked is 3 times, then drive control unit according to
Default turn-on sequence successively detects the conducting label of each power switch tube combination, and 3 be minimum conducting number, wherein D4,
The conducting number of D5 and D6 is equal, then power switch tube to be connected for the first time is determined according to the sequencing of default turn-on sequence
Combination, hence, it can be determined that the corresponding power switch tube group of D4 is combined into current power switch tube combination to be connected for the first time.
The brshless DC motor that present embodiment provides, in inversion unit starting, driving unit is suitable according to default conducting
Sequence detects the conducting number of each power switch tube combination, avoids the occurrence of the case where combining missing inspection to N number of power switch tube,
Meanwhile by the conducting number of label be connected for the first time, power switch tube to be connected for the first time can be fast and accurately determined
Combination.By the control of drive control unit, avoids when starting the brshless DC motor every time, first turn on fixed position
Power switch tube combination reduces the performance difference of the power switch tube between N number of power switch tube combination, it is brushless to enhance this
The service life of direct current generator.
Third embodiment of the present invention is related to a kind of brshless DC motor.It is brushless in third embodiment of the invention
Direct current generator further include: position sensor；Position sensor be arranged on motor body, respectively with motor body and drive control
Unit connection combines the location information be connected for the first time for detecting N number of power switch tube.
Specifically, drive control unit receives the signal of position sensor, and leads for the first time according to the signal is available
The location information and conducting mark of logical power switch tube combination, for example, it is assumed that drive control unit on startup, receives for the first time
The signal of position sensor transmission be " 101 ", then by processing, can obtain the power switch tube that is connected for the first time is Q1 and Q2
Combination.Therefore, the conducting situation of N number of power switch tube combination can be fast and accurately determined by position sensor.
Drive control unit controls N number of power switch according to conducting information when inversion unit starts in present embodiment
The conducting of pipe combination is roughly the same with first embodiment or second embodiment, and details are not described herein again.
The brshless DC motor that present embodiment provides, further includes position sensor, is believed by the position of position sensor
Breath, drive control unit can fast and accurately determine the conducting information of N number of power switch tube combination, accelerate drive control list
The speed of member control power switch tube conducting.
It will be appreciated by those skilled in the art that realizing that part steps are can to instruct phase by program in above-described embodiment
The hardware of pass is completed, which is stored in a storage medium, including some instructions are used so that an equipment (can be
Single-chip microcontroller, chip etc.) or processor (processor) execute all or part of step of each embodiment the method for the application
Suddenly.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), deposits at random
The various media that can store program code such as access to memory (RAM, Random Access Memory), magnetic or disk.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (9)
1. a kind of brshless DC motor characterized by comprising motor body, drive control unit and include N number of power switch
The inversion unit of pipe combination, N are the integer greater than 2；
The motor body is electrically connected with the inversion unit；
The drive control unit combines connection with N number of power switch tube respectively, in inversion unit starting, is used for
It records N number of power switch tube and combines the conducting information be connected for the first time, and N number of power switch is controlled according to the conducting information
The conducting for the first time of pipe combination.
2. brshless DC motor according to claim 1, which is characterized in that the conducting information includes: that each power is opened
Close the location information that pipe combination is connected for the first time and the conducting mark that the combination of each power switch tube is connected for the first time.
3. brshless DC motor according to claim 2, which is characterized in that the conducting mark is used to indicate described inverse
Whether the power switch tube combination is connected for the first time when becoming unit starting, and the drive control unit is specifically used for:
In the case where the inversion unit receives enabled instruction, according to the default turn-on sequence that N number of power switch tube combines, inspection
The conducting for surveying the combination of each power switch tube identifies whether that instruction is connected for the first time, if so, detecting next group of power switch tube
Otherwise the power switch tube combination of current detection is connected in combination for the first time.
4. brshless DC motor according to claim 2, which is characterized in that the conducting mark is for marking the power
Switching tube combines the conducting number be connected for the first time, and the drive control unit is specifically used for:
In the case where the inversion unit receives enabled instruction, according to the default turn-on sequence that N number of power switch tube combines, inspection
The conducting for surveying the combination of each power switch tube identifies marked conducting number；
According to conducting number and default turn-on sequence that N number of power switch tube combines, power switch tube to be connected for the first time is determined
Combination, and the power switch tube combination to be connected for the first time of the determination is connected.
5. the brshless DC motor according to claim 3 or 4, which is characterized in that the drive control unit is also used to:
Store the default turn-on sequence of N number of power switch tube combination.
6. according to claim 1, brshless DC motor described in any one of 2 or 5, which is characterized in that the inversion unit is
Three-phase full-bridge inversion unit including 3 bridge arms, each bridge arm are made of multiple power switch tube parallel connections, in 3 bridge arms
Intermediate node is electrically connected with three interfaces of the motor body respectively, wherein each power switch tube combines the function for including
Rate switching tube is belonging respectively to different bridge arms.
7. brshless DC motor according to claim 5, which is characterized in that the brshless DC motor further include: position
Sensor；
The position sensor is arranged on the motor body, connects respectively with the motor body and the drive control unit
It connects, combines the location information be connected for the first time for detecting N number of power switch tube.
8. brshless DC motor according to claim 7, which is characterized in that the power switch tube is metal oxide half
Conductor field effect transistor.
9. the brshless DC motor according to claim 8, which is characterized in that N 6, and each power switch tube combines
In include 2 power switch tubes, wherein the drive control unit is electrically connected with each power switch tube.
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| CN201711269683.0A CN110120761A (en) | 2017-12-05 | 2017-12-05 | A kind of brshless DC motor |
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| CN201711269683.0A CN110120761A (en) | 2017-12-05 | 2017-12-05 | A kind of brshless DC motor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018541A (en) * | 2012-11-06 | 2013-04-03 | 中南林业科技大学 | Counter-potential zero-crossing detection circuit and counter-potential zero-crossing detection method for brushless direct-current motor |
| CN104110800A (en) * | 2013-06-26 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner, and on-off control method and on-off control system for resistive load |
| CN104345654A (en) * | 2013-07-29 | 2015-02-11 | 中兴通讯股份有限公司 | Different-power rectifier mixed insertion system and energy saving realization method and device thereof |
| CN207720051U (en) * | 2017-12-05 | 2018-08-10 | 追觅科技（天津）有限公司 | A kind of brshless DC motor |
-
2017
- 2017-12-05 CN CN201711269683.0A patent/CN110120761A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018541A (en) * | 2012-11-06 | 2013-04-03 | 中南林业科技大学 | Counter-potential zero-crossing detection circuit and counter-potential zero-crossing detection method for brushless direct-current motor |
| CN104110800A (en) * | 2013-06-26 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner, and on-off control method and on-off control system for resistive load |
| CN104345654A (en) * | 2013-07-29 | 2015-02-11 | 中兴通讯股份有限公司 | Different-power rectifier mixed insertion system and energy saving realization method and device thereof |
| CN207720051U (en) * | 2017-12-05 | 2018-08-10 | 追觅科技（天津）有限公司 | A kind of brshless DC motor |
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