CN105322748A - Seven-phase winding permanent magnet synchronous brushless direct current motor and control method therefor - Google Patents
Seven-phase winding permanent magnet synchronous brushless direct current motor and control method therefor Download PDFInfo
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- CN105322748A CN105322748A CN201410379297.7A CN201410379297A CN105322748A CN 105322748 A CN105322748 A CN 105322748A CN 201410379297 A CN201410379297 A CN 201410379297A CN 105322748 A CN105322748 A CN 105322748A
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Abstract
The invention relates to a seven-phase winding permanent magnet synchronous brushless direct current motor and a winding current commutation control method therefor. The phase number of the windings is the multiples of seven, and a six-phase working system is adopted; compared with the conventional three-phase winding motor, the material utilization of the windings, the stators, the permanent magnets, a current commutation unit and a current control unit of the seven-phase winding permanent magnet synchronous brushless direct current motor is greatly improved; and the material utilization of the armature, the stators, the permanent magnets, the current commutation unit and the current control unit of the conventional three-phase winding motor is greatly improved from 66.7% to 85.7%, and the improvement rate reaches 28.5%.
Description
Technical field
The present invention relates to permanent magnet synchronous electric machine technology, specifically a kind of seven phase winding permanent magnet synchronous brushless DC motors.
Background technology
The operation principle of traditional three-phase windings permanent magnet synchronous brushless DC motor is three-phase windings two-phase duty, a phase winding is had to be in electric current commutation wait all the time in three-phase windings, because the stock utilization of the commutation of the winding of three-phase windings permanent magnet synchronous brushless DC motor, stator, permanent magnet and electric current, control device only has 66.7%, therefore there is following inferior position: 1. the stock utilization due to motor and electric current commutation, control device is lower, causes precious mineral resources waste larger; The power density of 2 motors is less; 3. the starting torque of motor is lower; 4. the operating efficiency of motor is lower; 5. cannot normally work after motor phase failure; 6. the volume and weight of motor is larger; 7. the cost performance of motor is lower; 8. the operating noise of motor is larger; 9. the job stability of motor is poor.
Summary of the invention
The object of the present invention is to provide a kind of seven phase winding permanent magnet synchronous brushless DC motors and winding current reverse control method, the winding number of phases is the multiple of seven, and adopt six phase dutys, have in the stock utilization of the commutation of winding, stator, permanent magnet and electric current, control unit relative to traditional three-phase winding motor the present invention and significantly promote, the stock utilization of the commutation of the armature of traditional three-phase windings permagnetic synchronous motor, stator, permanent magnet and electric current, control unit is significantly promoted to 85.7% from 66.7%, and enhancing rate is 28.5%.
For achieving the above object by the following technical solutions:
A kind of seven phase winding permanent magnet synchronous brushless DC motors, comprise: a stator and one post the rotor of permanent magnet, the stator motor be fixed on package header is the synchronous brshless DC motor of internal rotor permanent-magnetic, the stator motor be fixed on axle is the synchronous brushless direct current permanent magnet motor of external rotor, it is characterized in that: described stator adopts the multiple groove of 7 grooves or 7, and adopt the coiling of seven phase windings, rotor permanent magnet position transducer can be provided with in the outer rim of stator tooth, seven described phase windings and rotor permanent magnet position transducer all commutate with winding current, control device carries out circuit connection.
Described stator is 7 wire casings and 7 stator tooths, described rotor posts 6 magnetic permanent magnet pole corresponding with it.
Described stator is 56 wire casings and 56 each stator tooths, described rotor adopts 52 permanent magnet poles corresponding with it.
Inventing the advantage brought is:
1. the increase of the motor winding work number of phases makes the utilance of electromagnetic material, current control device higher, as: adopt stator to be that the winding of traditional three-phase winding motor, stator, permanent magnet and electric current commutate by 7 wire casings, 6 permanent magnet poles, the stock utilization of control device is significantly promoted to 85.7% from 66.7%, enhancing rate is 28.5%, has significantly saved the mineral resources of various preciousness;
2. the power density of motor significantly promotes;
3. the starting torque of motor significantly promotes;
4. the operating efficiency of motor is higher, and energy-saving effect is remarkable;
Even if 5. motor winding also can carry out work close to normal operating mode after lacking one to two-phase;
6. the volume and weight of motor significantly reduces;
7. the cost performance of motor significantly promotes;
8. the operating noise of motor is lower;
9. the job stability of motor significantly promotes.
Accompanying drawing explanation
Fig. 1-14 is the commutation sequential chart of 7 wire casings, 6 permanent magnet pole motors;
Figure 15-28 is the commutation sequential chart of 56 wire casings, 52 permanent magnet pole motors.
Embodiment
The commutation sequential that Fig. 1-14 is depicted as 7 wire casings of the present invention, 6 permanent magnet pole seven phase permanent-magnet synchronous brushless electric machines is: the position signalling level (corresponding magnetic position sensor is A, B, C, D, E, F, G) of permanent magnet is followed successively by: 0100101,0101101,0101001,0101011,0101010,1101010,1001010,1011010,1010010,1010110,1010100,1010101,0010101,0110101, totally 14 beats; The input current direction of its seven windings (A, B, C, D, E, F, G) is followed successively by: positive and negative positive and negative nothing, without negative positive and negative just, negative without positive and negative just, negative just without negative just positive and negative, negative positive and negative in just positive and negative, negative positive and negative just without just bearing, negative positive and negative nothing just, negative positive and negative just without, without positive and negative positive and negative, just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative, totally 14 commutation sequence.
The commutation sequential that Figure 15-28 is depicted as 56 wire casings of the present invention, 52 permanent magnet pole seven phase permanent-magnet synchronous brushless electric machines is: the position signalling level (corresponding magnetic position sensor is A, B, C, D, E, F, G) of permanent magnet is followed successively by: 0111111,0011111,0001111,0000111,0000011,0000001,0000000,1000000,1100000,1110000,1111000,1111100,1111110,1111111, totally 14 beats; The input current direction of its seven windings (A, B, C, D, E, F, G) is followed successively by: negative positive and negative just without negative just, negative positive and negative nothing just, bear positive and negative just without, without positive and negative positive and negative, just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative, positive and negative positive and negative nothing, without negative positive and negative just, just without positive and negative just, positive and negative nothing is born just positive and negative, negative positive and negative in just positive and negative, totally 14 commutation sequence.
The present invention is by seven phase winding six phase dutys, and the stock utilization of the commutation of the winding of motor, stator, permanent magnet and electric current, control device significantly promoted, the advantage that therefore the present invention brings is:
1. due to seven phase motors and electric current commutation, control device stock utilization higher, the stock utilization of the winding of traditional three-phase windings permanent magnet synchronous DC motor, stator, permanent magnet, electric current commutation, control device is significantly promoted to 85.7% from 66.7%, enhancing rate is 28.5%, has significantly saved the mineral resources of various preciousness;
2. the power density of motor significantly promotes;
3. the starting torque of motor significantly promotes;
4. the operating efficiency of motor is higher, and energy-saving effect is remarkable;
Even if 5. motor winding also can carry out work close to normal operating mode after lacking one to two-phase;
6. the volume and weight of motor significantly reduces;
7. the cost performance of motor significantly promotes;
8. the operating noise of motor is lower;
9. the job stability of motor significantly promotes.
Claims (5)
1. a phase winding permanent magnet synchronous brushless DC motor, comprise the rotor that a stator and post permanent magnet, it is characterized in that: described stator adopts the multiple groove of 7 grooves or 7, and adopt the coiling of seven phase windings, the outer rim of stator tooth pole can be provided with rotor-position sensor, seven described phase windings and rotor-position sensor all commutate with the electric current of winding, control device is electrically connected.
2. a kind of seven phase winding permanent magnet synchronous brushless DC motors as claimed in claim 1, is characterized in that: described stator is 7 wire casings and 7 stator tooths, and described rotor adopts 6 permanent magnet poles.
3. a kind of seven phase winding permanent magnet synchronous brushless DC motors as claimed in claim 1, is characterized in that: described stator is 56 wire casings and 56 stator tooths, described rotor adopt 52 permanent magnet poles corresponding with it.
4. the current control method of a kind of seven phase winding permanent magnet synchronous brushless DC motors as claimed in claim 2: the position signalling level that winding current commutation, control device accept rotor permanent magnet position transducer is followed successively by: 0111111,0011111,0001111,0000111,0000011,0000001,0000000,1000000,1100000,1110000,1111000,1111100,1111110,1111111, totally 14 beats; The input current direction that winding current commutation, control device give seven armatures is followed successively by: negative positive and negative just without negative just, negative positive and negative nothing just, bear positive and negative just without, without positive and negative positive and negative, just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative, positive and negative positive and negative nothing, without negative positive and negative just, just without positive and negative just, positive and negative nothing is born just positive and negative, negative positive and negative in just positive and negative, totally 14 commutation sequence.
5. the control method of a kind of seven phase winding permanent magnet synchronous brushless DC motors as claimed in claim 3: the position signalling level that winding current commutation, control device accept rotor-position sensor is followed successively by: 0111111,0011111,0001111,0000111,0000011,0000001,0000000,1000000,1100000,1110000,1111000,1111100,1111110,1111111, totally 14 beats; The input current direction that winding current commutation, control device give seven windings is followed successively by: negative positive and negative just without negative just, negative positive and negative nothing just, bear positive and negative just without, without positive and negative positive and negative, just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative positive and negative, positive and negative in positive and negative, positive and negative just without negative, positive and negative positive and negative nothing, without negative positive and negative just, just without positive and negative just, positive and negative nothing is born just positive and negative, negative positive and negative in just positive and negative, totally 14 commutation sequence.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379297.7A CN105322748B (en) | 2014-08-05 | 2014-08-05 | A kind of seven phase winding permanent magnet synchronous brushless DC motors and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410379297.7A CN105322748B (en) | 2014-08-05 | 2014-08-05 | A kind of seven phase winding permanent magnet synchronous brushless DC motors and its control method |
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| CN105322748A true CN105322748A (en) | 2016-02-10 |
| CN105322748B CN105322748B (en) | 2017-10-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371350A (en) * | 2020-03-30 | 2020-07-03 | 杨猛 | Control method of full-magnetic-field direct-current motor system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4692674A (en) * | 1985-04-26 | 1987-09-08 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Brushless DC motor control system responsive to control signals generated by a computer or the like |
| CN1871763A (en) * | 2003-09-10 | 2006-11-29 | 波峰实验室责任有限公司 | Multiphase motor winding topology and control |
| JP2008228529A (en) * | 2007-03-15 | 2008-09-25 | Masahiro Okegawa | Method and apparatus for driving control of permanent magnet synchronous motor |
| CN101411038A (en) * | 2005-12-23 | 2009-04-15 | 罗伯特.博世有限公司 | Electrical machine, especially alternator |
| CN204046388U (en) * | 2014-08-05 | 2014-12-24 | 章昭晖 | A kind of seven phase winding permanent magnet synchronous brushless DC motors |
-
2014
- 2014-08-05 CN CN201410379297.7A patent/CN105322748B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4692674A (en) * | 1985-04-26 | 1987-09-08 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Brushless DC motor control system responsive to control signals generated by a computer or the like |
| CN1871763A (en) * | 2003-09-10 | 2006-11-29 | 波峰实验室责任有限公司 | Multiphase motor winding topology and control |
| CN101411038A (en) * | 2005-12-23 | 2009-04-15 | 罗伯特.博世有限公司 | Electrical machine, especially alternator |
| JP2008228529A (en) * | 2007-03-15 | 2008-09-25 | Masahiro Okegawa | Method and apparatus for driving control of permanent magnet synchronous motor |
| CN204046388U (en) * | 2014-08-05 | 2014-12-24 | 章昭晖 | A kind of seven phase winding permanent magnet synchronous brushless DC motors |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371350A (en) * | 2020-03-30 | 2020-07-03 | 杨猛 | Control method of full-magnetic-field direct-current motor system |
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