CN101771319B - Brushless DC motor and drive unit thereof - Google Patents
Brushless DC motor and drive unit thereof Download PDFInfo
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- CN101771319B CN101771319B CN2008101903791A CN200810190379A CN101771319B CN 101771319 B CN101771319 B CN 101771319B CN 2008101903791 A CN2008101903791 A CN 2008101903791A CN 200810190379 A CN200810190379 A CN 200810190379A CN 101771319 B CN101771319 B CN 101771319B
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Abstract
The invention provides a brushless DC motor and a drive unit thereof. The brushless DC motor comprises a rotor, a stator and a drive unit, wherein the rotor is provided with a plurality of magnetic poles; the stator is provided with a plurality of upper salient poles and lower salient poles; and the drive unit is provided with at least two coils which are wound around the upper salient poles and the lower salient poles respectively. The drive unit provides a main magnetic pole for the stator according to the status of the magnetic fields generated when the rotor rotates so as to drive the rotor.
Description
Technical field
The present invention relates to a kind of Brushless DC motor and driver element thereof, particularly a kind of have up and down staggered Brushless DC motor of salient pole and a driver element thereof.
Background technology
See also shown in Figure 1ly, it discloses a known motor drive circuit.Driver 10 is electrically connected at a voltage source Vcc; Bridge circuit 12 has four switch Q1～Q4 and a coil L; Be electrically connected at this driver 10 and a voltage source Vcc respectively; Driver 10 can receive its required operating voltage from this voltage source Vcc, and the open and close of exporting control signal C1 and control signal C2 control switch Q1～Q4 according to this.
Motor part mainly is made up of rotor, the magnet magnetic pole, stator, the printed circuit board (PCB) that are arranged in the rotor, and stator only has a plurality of salient poles of one group of same level, and driver 10 is provided with sensor 14 and is linked on the printed circuit board (PCB).
When motor operated; Coil L in the bridge circuit 12 twines stator; The open and close of driver 10 output control signal C1 and control signal C2 control switch Q1～Q4; When the switch Q1 in the bridge circuit 12 and switch Q4 are state and switch Q2 and the switch Q3 of ON when being the state of OFF, the circulation path of the input current of voltage source Vcc is switch Q1, coil L and switch Q4.Otherwise when the switch Q1 in the full-bridge circuit 12 and switch Q4 are the state of OFF and switch Q2 and switch Q3 during then for the state of ON, the circulation path of the input current of voltage source Vcc then is switch Q2, coil L and switch Q3.The magnet magnetic pole has four magnetic poles (being respectively the N utmost point, the S utmost point, the N utmost point and the S utmost point) and is arranged in the rotor; According to electric current flowing through coil L; The electromagnetic field that stator produced; Promote rotor, and export a sensing signal Ssense through the conversion of sensor 14 inductiopn rotor internal magnet magnetic poles and adjust the current time of control flows coils L, make motor stator produce the rotating magnetic field of fixed-direction to rotor to driver 10.
Yet; (Cogging Torque) is bigger for the cogging torque of present known motor; In addition; (input current flowing through coil L the sense of current switch moment) can produce an of short duration time of having a rest (dead time) and cause the current amplitude of flowing through coil L excessive and produce excessive peak current (PeakCurrent) when change poles, therefore causes the electronic component in the motor to damage easily.If in fan, fan can produce tangible motor frequency frequency multiplication vibrations with motor applications.In addition, known to utilizing one group of a plurality of salient pole in one group of motor drive circuit, single coil L and the motor stator, if there is any electronic component to break down in the motor drive circuit, will makes motor rotor lose magnetic field induction power and stop the rotation.
Summary of the invention
Because above-mentioned problem, the object of the invention is the Brushless DC motor that a kind of low current amplitude, low vibrations is provided and extra backup driver element is arranged.
Therefore, for reaching above-mentioned purpose, the present invention provides a kind of Brushless DC motor, comprises a rotor, a stator and a driver element.Rotor has a plurality of magnetic poles.Stator has a plurality of salient pole and a plurality of salient poles down gone up.Driver element has two coil at least, twine respectively should a plurality ofly go up salient poles and should be a plurality of under salient poles, and the magnetic field state when turning round according to this rotor provides this stator one main magnetic pole, to drive this rotor.
For reaching above-mentioned purpose, the present invention provides a kind of Brushless DC motor in addition, comprises a rotor, a stator and a driver element.Rotor has a plurality of magnetic poles.Stator has a plurality of salient poles, and these a plurality of salient poles are positioned at same level.Driver element has two coil at least, twines this a plurality of salient poles respectively, and the magnetic field state when turning round according to this rotor provides this stator one main magnetic pole, to drive this rotor.
Hold the above; Brushless DC motor of the present invention has the driver element of two coil at least through one; And twine stator respectively a plurality ofly go up salient poles and a plurality of salient poles down or twine two adjacent salient poles in a plurality of horizontal salient pole of stator respectively to drive this rotor; One comes Brushless DC motor to have low input current amplitude, motor rotor can reduce break when rotating advantage; Two because the driver element of Brushless DC motor comprises two groups of bridge circuits and two groups of sensors; So no matter arbitrary bridge circuit or sensor produce the situation of damaging, other bridge circuit or sensor can both be kept the normal operation of this driver element, so can improve the stability that this Brushless DC motor operates.
Description of drawings
Fig. 1 is the drive circuit calcspar of known Brushless DC motor.
Fig. 2 A is the driver element circuit block diagram of first embodiment of Brushless DC motor of the present invention.
Fig. 2 B is the another kind of driver element circuit block diagram of first embodiment of Brushless DC motor of the present invention.
Fig. 2 C is the schematic perspective view of Brushless DC motor of the present invention.
Fig. 3 A is ordered the electric current-time waveform figure that is measured for the drive system of the known Brushless DC motor shown in Figure 1A at I.
Fig. 3 B is ordered the electric current-time waveform figure that is measured for the driver element of the Brushless DC motor of the present invention shown in Fig. 2 A at Ia.
Fig. 4 is coil-winding and the motor stator vertical view of second embodiment of Brushless DC motor of the present invention.
The component symbol explanation:
10 drivers, 12 bridge circuits
14 sensor 2c motor part
26 rotors, 27 magnet magnetic poles
28,48 stators, 283 printed circuit board (PCB)s
284 bases, 2 Brushless DC motors
2a, 2b driver element 202 first drivers
204 second drivers, 21 diodes
222 first bridge circuits, 224 second bridge circuits
242 first sensors, 244 second sensors
282 times salient poles of salient pole on 281
481～488 salient poles
The A1 first control signal A2 second control signal
A3 the 3rd control signal A4 the 4th control signal
C1～C2 control signal I, Ia, Ib power input
L, L ' coil Q1～Q4 switch
The S1 first induced signal S2 second induced signal
The Vcc voltage source
Embodiment
Below will a kind of Brushless DC motor according to the preferred embodiment of the present invention be described with reference to relevant drawings.
First embodiment
Please be simultaneously with reference to Fig. 2 A and Fig. 2 C, the Brushless DC motor 2 of first embodiment of the invention comprises a driver element 2a, a rotor 26 and a stator 28.Driver element 2a comprises voltage source Vcc, first driver 202, first bridge circuit 222, first sensor 242, second driver 204, second bridge circuit 224, and second sensor 244.First driver 202 electrically connects the voltage source Vcc and first bridge circuit 222.
Go up salient poles 281 and produce induced fields through a plurality of of the winding of the coil L in this first bridge circuit 222 binding stator 28, rotate to drive this rotor 26 through this a plurality of salient poles down 282 of the winding of another coil L ' in second bridge circuit 224 binding.First sensor 242; Be electrically connected to the voltage source Vcc and first driver 202; Produce one first induced signal S1 in order to the magnet magnetic pole 27 (magnetic field states during inductiopn rotor 26 runnings) of inductiopn rotor 26; And export first induced signal S1 to the first driver 202, stator 28 1 main magnetic poles to be provided and to adjust this induced field, guarantee the rotating speed of this rotor rotation and adjustable turn over 26 with the phase place of adjusting this first control signal A1 and this second control signal A2.
Please with reference to Fig. 2 B and Fig. 2 C, the driver element 2b of the Brushless DC motor 2 of first embodiment of the invention also can adopt microprocessing unit 206 to replace first driver 202 and second driver 204.Driver element 2b comprises voltage source Vcc, first bridge circuit 222, second bridge circuit 224, first sensor 242, second sensor 244 and microprocessing unit 206.Microprocessing unit 206 electrically connects voltage source Vcc and first bridge circuit 222 and second bridge circuits 224 and also exports the first control signal A1 and second control signal A2 to the first bridge circuit 222, and the first control signal A1 and this second control signal A2 are pulsed voltage signal and anti-phase each other.Microprocessing unit 206 and export one the 3rd control signal A3 and one the 4th control signal A4 to this second bridge circuit 224, and the 3rd control signal A3 and the 4th control signal A4 are pulsed voltage signal and anti-phase each other.
Go up salient poles 281 and produce induced fields through a plurality of of the winding of the coil L in this first bridge circuit 222 binding stator 28, rotate to drive this rotor 26 through this a plurality of salient poles down 282 of the winding of another coil L ' in second bridge circuit 224 binding.First sensor 242; Be electrically connected to voltage source Vcc and microprocessing unit 206; Produce the first induced signal S1 in order to the magnet magnetic pole 27 (magnetic field states during inductiopn rotor 26 runnings) of inductiopn rotor 26; And export the first induced signal S1 to microprocessing unit 206, stator 28 1 main magnetic poles to be provided and to adjust this induced field, guarantee that this rotor 26 rotates and the rotating speed of adjustable turn over 26 with the phase place of adjusting this first control signal and this second control signal.
Please with reference to Fig. 2 C, motor part 2c comprises rotor 26, stator 28, printed circuit board (PCB) 283 and base 284.Rotor 26 set inside one magnet magnetic pole 27 (being respectively the N utmost point, the S utmost point, the N utmost point, the S utmost point) at this embodiment magnet magnetic pole 27.Stator 28 has a plurality of salient pole 281 and a plurality of salient poles 282 down (salient pole 282 respectively had four respectively under in this embodiment, last salient pole 281 reached) gone up.A plurality of salient poles 281 of going up are positioned at a plurality of tops of salient pole 282 down, but do not exceed with Fig. 2 C, and a plurality of salient poles 281 of going up also can be positioned at a plurality of belows of salient pole 282 down.Salient pole center on each of a plurality of last salient poles 281 (the for example single salient pole center 2811 of going up) is positioned at the side of each following salient pole of a plurality of second salient poles 282.A plurality of adjacent two of going up in the salient pole 281 go up 281 formation of salient pole, one first space; 282 of adjacent two following salient poles in a plurality of down salient poles 282 form one second space, and this first space and this second space are staggered up and down.The angle that the salient pole center is separated by under on a plurality of each that go up in the salient pole 281 in salient pole center and this a plurality of salient poles 282 down each is:
In the present embodiment, motor part 2c has four and goes up salient pole and four following salient poles, thus a plurality of each that goes up in the salient pole 281 go up salient pole with should be a plurality of under salient pole is separated by under in salient poles 282 each angle be 45 to spend.
In addition; If a plurality of salient poles 281 of going up are regarded as first group of a plurality of salient pole 281 of going up; A plurality of salient poles 282 down are regarded as second group of a plurality of salient pole 282 down; Stator 28 also also can comprise a plurality of salient poles (not being shown among the figure) more than the 3rd group, and driver element 2b also can comprise tertiary coil, the 3rd bridge circuit, and the above object of the 3rd sensor is arranged in pairs or groups stator 28 to drive rotor 26.
Please consulting Fig. 2 A and Fig. 2 C more simultaneously, is example with the rotor 26 of driver element 2a CD-ROM drive motor, can first driver 202 among the driver element 2a, second driver 204, first sensor 242 and second sensor 244 be arranged on the printed circuit board (PCB) 283.And driver element 2a has two coil L, L ' at least, twine respectively should a plurality ofly go up salient poles 281 and should be a plurality of under salient poles 282, and the magnetic field state when turning round according to rotor 26 provides stator 28 1 main magnetic poles, to drive this rotor 26.
Please with reference to Fig. 3 A and Fig. 3 B, Fig. 3 A be by known drive system 1a collocation motor part 1b at input point I institute's experiment measuring of bridge circuit 12 input voltage source Vcc and the oscillogram of electric current-time.Can know that by Fig. 3 A the amplitude of current maxima and minimum value is about 400 milliamperes (400mA), know that thus the current amplitude of flowing through coil L is quite big; Can make the damage probability of the interior electronic component of motor heighten; And electric current (sense of current of representing flowing through coil L is being done when switching, and the salient pole of stator 18 is switching pole polarity) more complications of its waveform and discontinuous when switching up and down, near time T point; Show and to produce of short duration time of having a rest (dead time) phenomenon this moment; Represent the electric current meeting short interruption of flowing through coil L, in addition, (Cogging Torque) is also bigger for its cogging torque.
Fig. 3 B is by driver element 2a of the present invention; Collocation CD-ROM drive motor 2c at input point Ia institute's experiment measuring of bridge circuit 222 input voltage source Vcc and the oscillogram of electric current-time; Can know by Fig. 3 B; The amplitude of current maxima and minimum value only is about 200 milliamperes (200mA), does not have excessive input current amplitude.Electric current is when switching up and down; Current waveform is comparatively continuous; And driver element 2a is because of having two coil L, L ', and two coil L, L ' indivedual time of having a rest that produce (dead time) phenomenon can not take place simultaneously, in addition; Because of first space and second space of stator 28 is staggered up and down, can effectively reduce cogging torque.
Second embodiment
Please with reference to Fig. 2 A and Fig. 4; The Brushless DC motor 4 of second embodiment of the invention has rotor, stator and driver element equally; The rotor 26 of the structure of its rotor and driver element and the Brushless DC motor 2 of first embodiment is identical with driver element 2a, repeats no more at this.And its stator 48 has a plurality of salient poles 481～488; And wherein these a plurality of salient poles 481～488 are positioned at same level; Two coil L among the driver element 2a, L ' twine two adjacent salient poles in these a plurality of salient poles 481～488 respectively; For example stator 48 has tactic first salient pole 481 of level, second salient pole 482 and the 3rd salient pole 483 at least; And driver element 2a has a coil L and twines first salient pole 481 and second salient pole 482, and another coil L ' twines second salient pole 482 and the 3rd salient pole 483.Behind more complete two salient poles 481,482 that are described as coil L winding stator 48; Twine two salient poles 483,484 again, then twine two salient poles 485,486 again, twine two salient poles 487,488 at last again; And behind two salient poles 488,481 of another coil L ' winding; Twine two salient poles 482,483 again, then twine two salient poles 484,485 again, twine two salient poles 486,487 at last again; And the magnetic field state when turning round according to rotor provides stator 48 1 main magnetic poles, to drive rotor.And in the present embodiment, the magnetic pole number of rotor is:
Please with reference to Fig. 4, the salient pole number of stator 48 is eight, and this coil number is two, so the magnetic pole number of rotor is four (being respectively the N utmost point, the S utmost point, the N utmost point and the S utmost point).
Use this coil winding methods; Coil L and coil L ' twine the effect that amplitude that salient pole also can reach the current maxima that makes input current and minimum value dwindles respectively; Thereby can avoid the super-high-current peak value to cause the electronic component in the motor to damage; And electric current is when switching up and down, and current waveform is more continuous.
In sum; Brushless DC motor of the present invention has the driver element of two coil at least through one; And a plurality of two the adjacent salient poles of a plurality of salient poles going up salient poles and a plurality of salient poles down or be positioned at same level that twine respectively that stator is arranged in upper and lower are to drive this rotor; One comes this Brushless DC motor to have low input current amplitude, motor rotor can reduce break when rotating advantage; Two because the driver element of this Brushless DC motor comprises two groups of bridge circuits and two groups of sensors; So no matter arbitrary group of bridge circuit or sensor produce the situation of damaging, other one group of bridge circuit or sensor can both be kept the normal operation of this driver element, so can improve the stability that this Brushless DC motor operates.If Brushless DC motor is applied to a fan, promptly the rotor periphery is installed a flabellum, and then the stability of fan running also can improve.
The above is merely illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and scope, and, all should be contained in the appending claims its equivalent modifications of carrying out or change.
Claims (30)
1. Brushless DC motor comprises:
One rotor has a plurality of magnetic poles;
One stator has a plurality of salient pole and a plurality of salient poles down gone up; And
One driver element has two coil at least, twine respectively should a plurality ofly go up salient poles and should be a plurality of under salient poles, and the magnetic field state when turning round according to this rotor provides this stator one main magnetic pole, driving this rotor,
Wherein this driver element comprises:
One power supply;
One first bridge circuit;
One first driver electrically connects this power supply and this first bridge circuit and exports one first control signal and one second control signal to this first bridge circuit, and this first control signal and this second control signal anti-phase each other;
One second bridge circuit; And
One second driver electrically connects this power supply and this second bridge circuit and exports one the 3rd control signal and the 4th and controls signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal;
Wherein, link these a plurality of these a plurality of salient poles down of coils binding of going up in salient pole and this second bridge circuit through the coil in this first bridge circuit and produce an induced field, to drive this rotor rotation.
2. Brushless DC motor as claimed in claim 1, wherein this Brushless DC motor is applied to a fan, and this rotor periphery is provided with a plurality of flabellums.
3. Brushless DC motor as claimed in claim 1, wherein these a plurality of each that go up salient poles go up that salient pole is centered close to these a plurality of salient poles down each descend salient pole side.
4. Brushless DC motor as claimed in claim 1, wherein in this a plurality of going up in the salient pole, two adjacent epirelief interpolars form one first space; In these a plurality of down salient poles, form one second space between two adjacent following salient poles, and this first space and this second space are up and down and are staggered.
5. Brushless DC motor as claimed in claim 1, the angle that wherein the salient pole center is separated by under each in salient pole center and this a plurality of salient poles down on these a plurality of each that go up in the salient pole is:
6. Brushless DC motor as claimed in claim 1; Wherein this driver element also comprises this two coil at least of the direct drive circuit electrically connect of at least one Hall, wherein builds at least one driver, at least one bridge circuit and at least one sensor in the direct drive circuit of this Hall.
7. Brushless DC motor as claimed in claim 1, wherein this driver element also comprises:
One first sensor; Be electrically connected to this first driver; And this first sensor is in order to the inductiopn rotor magnetic pole and produce one first induced signal; And export this first induced signal to this first driver, the phase place of adjusting this first control signal and this second control signal to be to adjust this induced field, guarantees this rotor rotation and adjusts the rotating speed of this rotor.
8. Brushless DC motor as claimed in claim 7, wherein this driver element also comprises:
One second sensor; Be electrically connected to this second driver; And this second sensor produces one second induced signal in order to the inductiopn rotor magnetic pole; And export this second induced signal to this second driver, the phase place of adjusting the 3rd control signal and the 4th control signal to be to adjust this induced field, guarantees this rotor rotation and adjusts the rotating speed of this rotor.
9. Brushless DC motor as claimed in claim 1, wherein this first bridge circuit and this second bridge circuit are full-bridge circuit or half-bridge circuit.
10. Brushless DC motor as claimed in claim 8 also comprises a printed circuit board (PCB) and electrically connects this first driver, this second driver, this first sensor and this second sensor.
11. a Brushless DC motor comprises:
One rotor has a plurality of magnetic poles;
One stator has a plurality of salient pole and a plurality of salient poles down gone up; And
One driver element has two coil at least, twine respectively should a plurality ofly go up salient poles and should be a plurality of under salient poles, and the magnetic field state when turning round according to this rotor provides this stator one main magnetic pole, driving this rotor,
Wherein this driver element comprises:
One power supply;
One first bridge circuit;
One second bridge circuit; And
One microprocessing unit; Electrically connect this power supply and this first bridge circuit and this second bridge circuit and export one first control signal and one second control signal to this first bridge circuit; And this first control signal and this second control signal anti-phase each other; And export one the 3rd control signal and the 4th and control signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal.
12. Brushless DC motor as claimed in claim 11, wherein this first bridge circuit and this second bridge circuit are full-bridge circuit or half-bridge circuit.
13. Brushless DC motor as claimed in claim 11, wherein this driver element also comprises:
One first sensor; Be electrically connected to this microprocessing unit; And this first sensor produces one first induced signal in order to the inductiopn rotor magnetic pole; And export this first induced signal to this microprocessing unit, the phase place of adjusting this first control signal and this second control signal to be to adjust this induced field, guarantees this rotor rotation and adjusts the rotating speed of this rotor.
14. Brushless DC motor as claimed in claim 13, wherein this driver element also comprises:
One second sensor; Be electrically connected to this microprocessing unit; And this second sensor produces one second induced signal in order to the inductiopn rotor magnetic pole; And export this second induced signal to this microprocessing unit, the phase place of adjusting the 3rd control signal and the 4th system signal is guaranteed this rotor rotation and is adjusted the rotating speed of this rotor to adjust this induced field.
15. Brushless DC motor as claimed in claim 14 also comprises a printed circuit board (PCB) and electrically connects this first driver, this second driver, this first sensor and this second sensor.
16. Brushless DC motor as claimed in claim 11, wherein this Brushless DC motor is applied to a fan, and this rotor periphery is provided with a plurality of flabellums.
17. Brushless DC motor as claimed in claim 11, wherein these a plurality of each that go up salient poles go up that salient pole is centered close to these a plurality of salient poles down each descend salient pole side.
18. Brushless DC motor as claimed in claim 11, wherein in this a plurality of going up in the salient pole, two adjacent epirelief interpolars form one first space; In these a plurality of down salient poles, form one second space between two adjacent following salient poles, and this first space and this second space are up and down and are staggered.
19. Brushless DC motor as claimed in claim 11, the angle that wherein the salient pole center is separated by under each in salient pole center and this a plurality of salient poles down on these a plurality of each that go up in the salient pole is:
20. Brushless DC motor as claimed in claim 11; Wherein this driver element also comprises this two coil at least of the direct drive circuit electrically connect of at least one Hall, wherein builds at least one driver, at least one bridge circuit and at least one sensor in the direct drive circuit of this Hall.
21. a Brushless DC motor comprises:
One rotor has a plurality of magnetic poles;
One stator has a plurality of salient poles; And
One driver element has two coil at least, twines two adjacent salient poles in these a plurality of salient poles respectively, and the magnetic field state during according to the running of this rotor provides this stator one main magnetic pole, driving this rotor,
Wherein this driver element comprises:
One power supply;
One first driver electrically connects this power supply and one first bridge circuit and exports one first control signal and one second control signal to this first bridge circuit, and this first control signal and this second control signal anti-phase each other; And
One second driver electrically connects this power supply and one second bridge circuit and exports one the 3rd control signal and the 4th and controls signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal;
Wherein, these a plurality of salient poles of coil binding that link in these a plurality of salient poles and this second bridge circuit through the coil in this first bridge circuit produce an induced field, to drive this rotor rotation.
22. Brushless DC motor as claimed in claim 21, wherein these a plurality of salient poles are positioned on the same horizontal plane.
23. Brushless DC motor as claimed in claim 22, wherein the magnetic pole number of this rotor is:
24. Brushless DC motor as claimed in claim 22, wherein this salient pole number is eight, and this coil number is two, and the magnetic pole number of rotor is four.
25. Brushless DC motor as claimed in claim 21; Wherein this stator has tactic one first salient pole of level, one second salient pole and one the 3rd salient pole at least; And this driver element has a coil and twines this first salient pole and this second salient pole, and another coil twines this second salient pole and the 3rd salient pole.
26. a Brushless DC motor comprises:
One rotor has a plurality of magnetic poles;
One stator has a plurality of salient poles; And
One driver element has two coil at least, twines two adjacent salient poles in these a plurality of salient poles respectively, and the magnetic field state during according to the running of this rotor provides this stator one main magnetic pole, driving this rotor,
Wherein this driver element comprises:
One power supply; And
One microprocessing unit; Electrically connect this power supply and one first bridge circuit and one second bridge circuit and export one first control signal and one second control signal to this first bridge circuit; And this first control signal and this second control signal anti-phase each other; And export one the 3rd control signal and the 4th and control signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal.
27. Brushless DC motor as claimed in claim 26; Wherein this stator has tactic one first salient pole of level, one second salient pole and one the 3rd salient pole at least; And this driver element has a coil and twines this first salient pole and this second salient pole, and another coil twines this second salient pole and the 3rd salient pole.
28. a driver element is applied to a Brushless DC motor, this Brushless DC motor comprise one have a plurality of magnetic poles rotor and have a plurality of salient poles and a plurality of stators of salient poles down gone up, this driver element comprises:
At least two coil, twine respectively should a plurality ofly go up salient poles and should be a plurality of under salient poles, and the magnetic field state when turning round according to this rotor provides this stator one main magnetic pole, driving this rotor,
Wherein said driver element also comprises:
One power supply;
One first bridge circuit;
One first driver electrically connects this power supply and this first bridge circuit and exports one first control signal and one second control signal to this first bridge circuit, and this first control signal and this second control signal anti-phase each other;
One second bridge circuit; And
One second driver electrically connects this power supply and this second bridge circuit and exports one the 3rd control signal and the 4th and controls signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal;
Wherein, link these a plurality of these a plurality of salient poles down of coils binding of going up in salient pole and this second bridge circuit through the coil in this first bridge circuit and produce an induced field, to drive this rotor rotation.
29. a driver element is applied to a Brushless DC motor, this Brushless DC motor comprise one have a plurality of magnetic poles rotor and have a plurality of salient poles and a plurality of stators of salient poles down gone up, this driver element comprises:
At least two coil, twine respectively should a plurality ofly go up salient poles and should be a plurality of under salient poles, and the magnetic field state when turning round according to this rotor provides this stator one main magnetic pole, driving this rotor,
Wherein said driver element also comprises:
One power supply;
One first bridge circuit;
One second bridge circuit; And
One microprocessing unit; Electrically connect this power supply and this first bridge circuit and this second bridge circuit and export one first control signal and one second control signal to this first bridge circuit; And this first control signal and this second control signal anti-phase each other; And export one the 3rd control signal and the 4th and control signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal.
30. a driver element is applied to a Brushless DC motor, this Brushless DC motor comprise one have a plurality of magnetic poles rotor and have the stator of a plurality of salient poles, this driver element comprises:
At least two coil twines two adjacent salient poles in these a plurality of salient poles respectively, and the magnetic field state during according to the running of this rotor provides this stator one main magnetic pole, and to drive this rotor, wherein these a plurality of salient poles are positioned on the same horizontal plane,
Wherein this driver element comprises:
One power supply;
One first driver electrically connects this power supply and one first bridge circuit and exports one first control signal and one second control signal to this first bridge circuit, and this first control signal and this second control signal anti-phase each other; And
One second driver electrically connects this power supply and one second bridge circuit and exports one the 3rd control signal and the 4th and controls signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal;
Wherein, these a plurality of salient poles of coil binding that link in these a plurality of salient poles and this second bridge circuit through the coil in this first bridge circuit produce an induced field, to drive this rotor rotation;
Perhaps, wherein this driver element comprises:
One power supply; And
One microprocessing unit; Electrically connect this power supply and one first bridge circuit and one second bridge circuit and export one first control signal and one second control signal to this first bridge circuit; And this first control signal and this second control signal anti-phase each other; And export one the 3rd control signal and the 4th and control signal to this second bridge circuit, and the 3rd control signal and the anti-phase each other of the 4th control signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101903791A CN101771319B (en) | 2008-12-31 | 2008-12-31 | Brushless DC motor and drive unit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101903791A CN101771319B (en) | 2008-12-31 | 2008-12-31 | Brushless DC motor and drive unit thereof |
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| CN101771319A CN101771319A (en) | 2010-07-07 |
| CN101771319B true CN101771319B (en) | 2012-07-04 |
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| CN102386740A (en) * | 2010-08-30 | 2012-03-21 | 建准电机工业股份有限公司 | Double-steering brushless direct current motor |
| US11641142B2 (en) | 2020-10-16 | 2023-05-02 | Delta Electronics, Inc. | Stator and winding assembly thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214809A (en) * | 1995-03-21 | 1999-04-21 | 宗德能源系统公司 | Double-salient permanent-magnet machine |
| US6072261A (en) * | 1998-02-12 | 2000-06-06 | Delta Electronics, Inc. | Motor construction |
| CN1574567A (en) * | 2003-06-10 | 2005-02-02 | 阿斯莫株式会社 | Direct current machine having continuously arranged magnetic poles |
| CN1592082A (en) * | 2003-08-29 | 2005-03-09 | 台达电子工业股份有限公司 | Circuit for controlling fan rotating speed |
| CN1967985A (en) * | 2006-11-24 | 2007-05-23 | 南京航空航天大学 | Stator same number of teeth single-phase double projecting pole motor |
-
2008
- 2008-12-31 CN CN2008101903791A patent/CN101771319B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214809A (en) * | 1995-03-21 | 1999-04-21 | 宗德能源系统公司 | Double-salient permanent-magnet machine |
| US6072261A (en) * | 1998-02-12 | 2000-06-06 | Delta Electronics, Inc. | Motor construction |
| CN1574567A (en) * | 2003-06-10 | 2005-02-02 | 阿斯莫株式会社 | Direct current machine having continuously arranged magnetic poles |
| CN1592082A (en) * | 2003-08-29 | 2005-03-09 | 台达电子工业股份有限公司 | Circuit for controlling fan rotating speed |
| CN1967985A (en) * | 2006-11-24 | 2007-05-23 | 南京航空航天大学 | Stator same number of teeth single-phase double projecting pole motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101771319A (en) | 2010-07-07 |
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