CN102522931B - Energy-saving automatic shifting control method of five-phase brushless direct-current motor - Google Patents
Energy-saving automatic shifting control method of five-phase brushless direct-current motor Download PDFInfo
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- CN102522931B CN102522931B CN201110411560.2A CN201110411560A CN102522931B CN 102522931 B CN102522931 B CN 102522931B CN 201110411560 A CN201110411560 A CN 201110411560A CN 102522931 B CN102522931 B CN 102522931B
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Abstract
The invention relates to a motor automatic shifting control method, in particular to an energy-saving automatic shifting control method of a five-phase brushless direct-current motor, comprising the following steps: firstly carrying out initialization setting to set current thresholds in different driving manners; obtaining running current values of the five-phase brushless motor in different Hall signal states; detecting a speed regulation signal and a stop signal; if the speed regulation signal is detected, comparing the running current values with the current thresholds in different driving manners and selecting a driving manner according to the comparison result; and if the stop signal is detected, stopping the power supply driving of the five-phase brushless motor, or else, returning to detect the speed regulation signal and the stop signal. The method provided by the invention is applied to the control of energy-saving automatic shifting of the five-phase brushless direct-current motor.
Description
Technical field
The present invention relates to motor automatic gear-shifting control method, relate in particular to the control method of the energy-conservation automatic gear-shifting of five-phase brushless DC motor.
Background technology
The existing motor of main flow on the market can be divided into three-phase brushless dc motor and five-phase brushless DC motor, three-phase brushless dc motor adopts conducting control mode one by one because of it, toque and efficiency is less than normal, and while entering saturation condition, rotating speed obviously declines, and affects continuing the time of storage battery; And five-phase brushless DC motor adopts two or two conducting control modes because of it, toque and efficiency obviously increases, while entering saturation condition, rotating speed can obviously not decline, moment of torsion also can be larger than common three phase electric machine, torque pulsation is little, without deceleration across-the-line starting load, reaction speed is fast, can extend continuing the time of storage battery.
But in actual use, five-phase brushless DC motor adopts two or two conducting control modes, during no-load running, noise is bigger than normal, and because torque drive consumes greatly more multipotency, for example, five-phase brushless DC motor is applied in electric motor car, and on smooth road, electric motor car travels because inertia and speed factor do not need so large torque drive, and causes wasting a part of electric energy of storage battery.Therefore the utility model that the patent No. is CN200520104639.0 discloses a kind of shift motor for electric vehicle, this utility model discloses a kind of governing speed of electric vehicle and the shift motor for electric vehicle of moment of torsion, it is provided with three gears, one grade: hill gear, second gear: economic speed per hour shelves, third gear: cross-country gear, manual switchover under different scenes, to reach the object of the storage battery electric energy that cuts the waste.But this utility model is used manual switchover, to riding the user's of electric motor car respond and technical merit, has higher requirement, can not be widely used in domestic consumer.
Summary of the invention
Technical problem to be solved by this invention is, energy-saving automatic shifting control method of five-phase brushless direct-current motor is provided, without setting up any spare and accessory parts, just can realize the energy-conservation automatic gear-shifting control mode of five-phase brushless DC motor, specifically, by the variation of the running current value under the different hall signal states of detection five-phase brushless motor, automatically realize the automatic switchover of three kinds of type of drive or two kinds of type of drive.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: first carry out initialization setting, set the current threshold of different driving mode, next obtains the running current value under the different hall signal states of five-phase brushless motor, then detect speed-regulating signal and stop signal, if speed-regulating signal detected, the current threshold under running current value and different driving mode is contrasted, and select type of drive according to comparing result; If the stop signal of detecting, stops the confession electric drive to described five-phase brushless DC motor, otherwise return, continue to detect speed-regulating signal and stop signal.
Further, set the current threshold of different driving mode, three kinds of type of drive are specifically set: two or two drive: bridge conducting under bridge two-phase in two-phase; 21 drive: in two-phase, bridge one descends bridge conducting or to go up mutually bridge conducting under bridge two-phase mutually; Drive one by one: one goes up bridge one mutually descends bridge conducting mutually.
Further, according to the comparing result of the current threshold under running current value and different driving mode, select type of drive, it is the automatic switchover of three kinds of type of drive, the current threshold of setting motor two or two drivings is P1, the current threshold of setting motor 21 drivings is P2, and motor actual motion current value is P:
When P >=P1, selecting type of drive is two or two drivings;
When P1>P >=P2, selecting type of drive is 21 drivings;
When P < P2, select type of drive for driving one by one.
Further, the value of the current threshold P1 that above-mentioned motor two or two drives is less than motor current-limiting value, and the value of the current threshold P2 that motor 21 drives is less than the current threshold P1 that motor two or two drives.
Further, according to the comparing result of the current threshold under running current value and different driving mode, select type of drive, it is the automatic switchover of two kinds of type of drive, specifically comprise three schemes: two or two drive and 21 automatic switchovers that drive, two or two automatic switchovers that drive and drive one by one and 21 automatic switchovers that drive and drive one by one:
Scheme drives and 21 automatic switchovers that drive for 1: two two, specifically: the current threshold of setting motor shift is P3, and motor actual motion current value is P: when P >=P3, selecting type of drive is two or two drivings, when P < P3, selecting type of drive is 21 drivings;
The automatic switchover that scheme drives and drives one by one for 2: two two, specifically: the current threshold of setting motor shift is P3, and motor actual motion current value is P: when P >=P3, selecting type of drive is two or two drivings, when P < P3, select type of drive for driving one by one;
The automatic switchover that scheme drives and drives one by one for 3: two one, specifically: the current threshold of setting motor shift is P3, and motor actual motion current value is P: when P >=P3, selecting type of drive is 21 drivings, when P < P3, select type of drive for driving one by one.
Further, 22 of such scheme 1 drivings and 21 automatic switchovers that drive are, the value of the current threshold P3 of the motor shift in two or two automatic switchovers that drive and drive one by one of scheme 2 and 21 drivings of scheme 3 and the automatic switchovers of driving is one by one less than motor current-limiting value.
The present invention adopts said method, compared with prior art, has the following advantages:
1. the present invention contrasts the current threshold under running current value and different driving mode, and selects type of drive according to comparing result, has realized the energy-conservation automatic gear-shifting of electric bicycle five-phase brushless DC motor;
2. the present invention is in energy-conservation automatic gear-shifting is controlled, by setting the current threshold under different driving mode, carry out the automatic switchover of motor drive mode, when having avoided unloaded at electric bicycle or having ridden, reach certain speed, realized the actual driving of moment of torsion, the noise, waste of energy and the battery loss that greatly reduce machine operation, further improved energy-saving effect;
3. above-mentioned automatic gear-shifting control method of the present invention, be applicable to the electric bicycle of all kinds of existing five-phase brushless DC motors, realize the automatic switchover of three kinds of type of drive or two kinds of type of drive, guarantee that drive motors operates in the state of lowest power consumption, extended the useful life of motor, storage battery and controller.
Accompanying drawing explanation
Fig. 1 is the flow chart of the automatic switchover of 1 three kinds of type of drive of the embodiment of the present invention;
Fig. 2 a is two or two drivings of the embodiment of the present invention 2 and the flow chart of 21 automatic switchovers that drive;
Fig. 2 b is the flow chart of two or two drivings and the automatic switchover driving one by one of the embodiment of the present invention 3;
Fig. 2 c is the flow chart of 21 drivings and the automatic switchover driving one by one of the embodiment of the present invention 4.
Embodiment
Now the present invention is further described with embodiment by reference to the accompanying drawings.
A kind of energy-saving automatic shifting control method of five-phase brushless direct-current motor of the present invention, main flow process is: first carry out initialization setting, set the current threshold of different driving mode, next obtains the running current value under the different hall signal states of five-phase brushless motor, then detect speed-regulating signal and stop signal, if speed-regulating signal detected, the current threshold under running current value and different driving mode is contrasted, and select type of drive according to comparing result; If the stop signal of detecting, stops the confession electric drive to described five-phase brushless DC motor, otherwise return, continue to detect speed-regulating signal and stop signal.
Further, set the current threshold of different driving mode, three kinds of type of drive are specifically set: two or two drive: bridge conducting under bridge two-phase in two-phase; 21 drive: in two-phase, bridge one descends bridge conducting or to go up mutually bridge conducting under bridge two-phase mutually; Drive one by one: one goes up bridge one mutually descends bridge conducting mutually.
embodiment 1
As one embodiment of the present of invention, above-mentioned energy-saving automatic shifting control method of five-phase brushless direct-current motor can be applicable in electric bicycle.Fig. 1 is the flow chart of automatic switchover of three kinds of type of drive of the five-phase brushless DC motor of electric bicycle, and the automatic switchover of these three kinds of type of drive comprises the following steps:
Step 1: initialization setting: according to the rated power of each five-phase brushless DC motor, the current threshold of setting motor two or two drivings is P1, the current threshold of setting motor 21 drivings is P2, motor actual motion current value is P, the current value of the comprehensive maximal rate output of normally riding and upper and lower bridge are that the cut-off current that single or multiple parallel field effect pipes allow is determined above-mentioned current threshold, wherein the value of current threshold P1 should be less than the cut-off current of motor, and the value of current threshold P2 is less than current threshold P1; Normally ride current value and the upper and lower bridge of maximal rate output of now take is that single field effect transistor is example, and setting two or two current thresholds that drive is P1=17A, and setting the current threshold that motor 21 drives is P2=13A;
Step 2: the running current value P under the different hall signal states of Real-time Obtaining five-phase brushless motor;
Step 3: the speed-regulating signal of electric motor car is produced by speed-regulating handle bar, the stop signal of electric motor car is produced by brake lever, therefore detect speed-regulating signal and stop signal detects speed-regulating handle bar and whether brake lever works, if speed-regulating handle bar is in running order, the current threshold under running current value and different driving mode is contrasted, and selects type of drive according to comparing result:
When P >=P1, selecting type of drive is two or two drivings;
When P1>P >=P2, selecting type of drive is 21 drivings;
When P < P2, select type of drive for driving one by one;
Step 4: detect brake lever and whether work, if brake lever is in running order, stop the confession electric drive to described five-phase brushless DC motor, whether work otherwise return to step 3 continuation detection speed-regulating handle bar.
embodiment 2
As one embodiment of the present of invention, above-mentioned energy-saving automatic shifting control method of five-phase brushless direct-current motor can be applicable in electric bicycle.Fig. 2 a is the flow chart of two or two drivings of five-phase brushless DC motor and the automatic switchovers of 21 drivings of electric bicycle, and this automatic switchover comprises the following steps:
Step 1: initialization setting: according to the rated power of each five-phase brushless DC motor, the current threshold of setting motor shift is P3, motor actual motion current value is P, the current value of the comprehensive maximal rate output of normally riding and upper and lower bridge are that the cut-off current that single or multiple parallel field effect pipes allow is determined above-mentioned current threshold, and wherein the value of current threshold P3 should be less than the cut-off current of motor; Normally ride current value and the upper and lower bridge of maximal rate output of now take is that single field effect transistor is example, and the current threshold of setting motor shift is P3=17A;
Step 2: the running current value P under the different hall signal states of Real-time Obtaining five-phase brushless motor;
Step 3: the speed-regulating signal of electric motor car is produced by speed-regulating handle bar, the stop signal of electric motor car is produced by brake lever, therefore detect speed-regulating signal and stop signal detects speed-regulating handle bar and whether brake lever works, if speed-regulating handle bar is in running order, the current threshold of the motor shift of running current value and setting is contrasted, when P >=P3, selecting type of drive is two or two drivings, when P < P3, selecting type of drive is 21 drivings;
Step 4: detect brake lever and whether work, if brake lever is in running order, stop the confession electric drive to described five-phase brushless DC motor, whether work otherwise return to step 3 continuation detection speed-regulating handle bar.
embodiment 3
As one embodiment of the present of invention, above-mentioned energy-saving automatic shifting control method of five-phase brushless direct-current motor can be applicable in electric bicycle.Fig. 2 b is two or two drivings of five-phase brushless DC motor and the flow chart of the automatic switchovers that drive one by one of electric bicycle, and this automatic switchover comprises the following steps:
Step 1: initialization setting: according to the rated power of each five-phase brushless DC motor, the current threshold of setting motor shift is P3, motor actual motion current value is P, the current value of the comprehensive maximal rate output of normally riding and upper and lower bridge are that the cut-off current that single or multiple parallel field effect pipes allow is determined above-mentioned current threshold, and wherein the value of current threshold P3 should be less than the cut-off current of motor; Normally ride current value and the upper and lower bridge of maximal rate output of now take is that single field effect transistor is example, and the current threshold of setting motor shift is P3=17A;
Step 2: the running current value P under the different hall signal states of Real-time Obtaining five-phase brushless motor;
Step 3: the speed-regulating signal of electric motor car is produced by speed-regulating handle bar, the stop signal of electric motor car is produced by brake lever, therefore detect speed-regulating signal and stop signal detects speed-regulating handle bar and whether brake lever works, if speed-regulating handle bar is in running order, the current threshold of the motor shift of running current value and setting is contrasted, when P >=P3, selecting type of drive is two or two drivings, when P < P3, select type of drive for driving one by one;
Step 4: detect brake lever and whether work, if brake lever is in running order, stop the confession electric drive to described five-phase brushless DC motor, whether work otherwise return to step 3 continuation detection speed-regulating handle bar.
embodiment 4
As one embodiment of the present of invention, above-mentioned energy-saving automatic shifting control method of five-phase brushless direct-current motor can be applicable in electric bicycle.Fig. 2 c is 21 drivings of five-phase brushless DC motor and the flow chart of the automatic switchovers that drive one by one of electric bicycle, and this automatic switchover comprises the following steps:
Step 1: initialization setting: according to the rated power of each five-phase brushless DC motor, the current threshold of setting motor shift is P3, motor actual motion current value is P, the current value of the comprehensive maximal rate output of normally riding and upper and lower bridge are that the cut-off current that single or multiple parallel field effect pipes allow is determined above-mentioned current threshold, and wherein the value of current threshold P3 should be less than the cut-off current of motor; Normally ride current value and the upper and lower bridge of maximal rate output of now take is that single field effect transistor is example, and the current threshold of setting motor shift is P3=17A;
Step 2: the running current value P under the different hall signal states of Real-time Obtaining five-phase brushless motor;
Step 3: the speed-regulating signal of electric motor car is produced by speed-regulating handle bar, the stop signal of electric motor car is produced by brake lever, therefore detect speed-regulating signal and stop signal detects speed-regulating handle bar and whether brake lever works, if speed-regulating handle bar is in running order, the current threshold of the motor shift of running current value and setting is contrasted, when P >=P3, selecting type of drive is 21 drivings, when P < P3, select type of drive for driving one by one;
Step 4: detect brake lever and whether work, if brake lever is in running order, stop the confession electric drive to described five-phase brushless DC motor, whether work otherwise return to step 3 continuation detection speed-regulating handle bar.
embodiment 5
As one embodiment of the present of invention, above-mentioned energy-saving automatic shifting control method of five-phase brushless direct-current motor can be applicable in conveyer belt.The automatic switchover of the five-phase brushless DC motor of this conveyer belt can adopt the switching of three kinds of type of drive or the switching of two kinds of type of drive, the switching of the switching of described three kinds of type of drive and two kinds of type of drive is with above-described embodiment 1-4, here the switching of two kinds of type of drive is repeated no more, only with the example that switches to of three kinds of type of drive, specifically sets forth:
The automatic switchover of these three kinds of type of drive comprises the following steps:
Step 1: initialization setting: according to the rated power of each five-phase brushless DC motor, the current threshold of setting motor two or two drivings is P1, the current threshold of setting motor 21 drivings is P2, motor actual motion current value is P, the current value of comprehensive normal transport conveyer belt maximal rate output and upper and lower bridge are that the cut-off current that single or multiple parallel field effect pipes allow is determined above-mentioned current threshold, wherein the value of current threshold P1 should be less than the cut-off current of motor, and the value of current threshold P2 is less than current threshold P1; The current value that the normal transport conveyer belt maximal rate of now take is exported and upper and lower bridge are that single field effect transistor is example, and setting two or two current thresholds that drive is P1=17A, and the current threshold that setting motor 21 drives is P2=13A;
Step 2: the running current value P under the different hall signal states of Real-time Obtaining five-phase brushless motor;
Step 3: detect speed governing button and whether work, if speed governing button is in running order, the current threshold under running current value and different driving mode is contrasted, and select type of drive according to comparing result:
When P >=P1, selecting type of drive is two or two drivings;
When P1>P >=P2, selecting type of drive is 21 drivings;
When P < P2, select type of drive for driving one by one;
Step 4: detect stop button and whether work, if stop button is in running order, stop the confession electric drive to described five-phase brushless DC motor, whether work otherwise return to step 3 continuation detection speed governing button.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; within not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (8)
1. an energy-saving automatic shifting control method of five-phase brushless direct-current motor, it is characterized in that: first carry out initialization setting, set the current threshold of different driving mode, next obtains the running current value under the different hall signal states of five-phase brushless motor, then detect speed-regulating signal and stop signal, if speed-regulating signal detected, the current threshold under running current value and different driving mode is contrasted, and select type of drive according to comparing result; If the stop signal of detecting, stops the confession electric drive to described five-phase brushless DC motor, otherwise return, continue to detect speed-regulating signal and stop signal;
The current threshold of setting different driving mode, specifically arranges three kinds of type of drive: two or two drive: bridge conducting under bridge two-phase in two-phase; 21 drive: in two-phase, bridge one descends bridge conducting or to go up mutually bridge conducting under bridge two-phase mutually; Drive one by one: one goes up bridge one mutually descends bridge conducting mutually.
2. energy-saving automatic shifting control method of five-phase brushless direct-current motor according to claim 1, it is characterized in that: according to the comparing result of the current threshold under running current value and different driving mode, select type of drive, it is the automatic switchover of three kinds of type of drive, the current threshold of setting motor two or two drivings is P1, the current threshold of setting motor 21 drivings is P2, and motor actual motion current value is P:
When P >=P1, selecting type of drive is two or two drivings;
When P1>P >=P2, selecting type of drive is 21 drivings;
When P < P2, select type of drive for driving one by one.
3. energy-saving automatic shifting control method of five-phase brushless direct-current motor according to claim 2, it is characterized in that: the value of the current threshold P1 that above-mentioned motor two or two drives is less than motor current-limiting value, and the value of the current threshold P2 that motor 21 drives is less than the current threshold P1 that motor two or two drives.
4. energy-saving automatic shifting control method of five-phase brushless direct-current motor according to claim 1, it is characterized in that: according to the comparing result of the current threshold under running current value and different driving mode, select type of drive, be the automatic switchover of two kinds of type of drive, specifically two or two drive and 21 automatic switchovers that drive, two or two drivings and the automatic switchover driving one by one or 21 automatic switchovers that drive and drive one by one.
5. energy-saving automatic shifting control method of five-phase brushless direct-current motor according to claim 4, it is characterized in that: two or two drive and 21 automatic switchovers that drive, specifically: the current threshold of setting motor shift is P3, motor actual motion current value is P: when P >=P3, selecting type of drive is two or two drivings, when P < P3, selecting type of drive is 21 drivings.
6. energy-saving automatic shifting control method of five-phase brushless direct-current motor according to claim 4, it is characterized in that: two or two automatic switchovers that drive and drive one by one, specifically: the current threshold of setting motor shift is P3, motor actual motion current value is P: when P >=P3, selecting type of drive is two or two drivings, when P < P3, select type of drive for driving one by one.
7. energy-saving automatic shifting control method of five-phase brushless direct-current motor according to claim 4, it is characterized in that: 21 automatic switchovers that drive and drive one by one, specifically: the current threshold of setting motor shift is P3, motor actual motion current value is P: when P >=P3, selecting type of drive is 21 drivings, when P < P3, select type of drive for driving one by one.
8. according to the energy-saving automatic shifting control method of five-phase brushless direct-current motor described in claim 5 or 6 or 7, it is characterized in that: the value of the current threshold P3 of above-mentioned motor shift is less than motor current-limiting value.
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| CN201110411560.2A CN102522931B (en) | 2011-12-12 | 2011-12-12 | Energy-saving automatic shifting control method of five-phase brushless direct-current motor |
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| CN201110411560.2A CN102522931B (en) | 2011-12-12 | 2011-12-12 | Energy-saving automatic shifting control method of five-phase brushless direct-current motor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223029A (en) * | 1996-05-02 | 1999-07-14 | 西门子加拿大有限公司 | Control circuit for five-phase brushless DC motor |
| CN101051806A (en) * | 2007-05-17 | 2007-10-10 | 同济大学 | Novel electric driving control system and method for vehicle air conditioner compressor |
| CN101420198A (en) * | 2008-12-05 | 2009-04-29 | 广州华南智信微系统有限公司 | Five phase DC brushless motor controller |
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2011
- 2011-12-12 CN CN201110411560.2A patent/CN102522931B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223029A (en) * | 1996-05-02 | 1999-07-14 | 西门子加拿大有限公司 | Control circuit for five-phase brushless DC motor |
| CN101051806A (en) * | 2007-05-17 | 2007-10-10 | 同济大学 | Novel electric driving control system and method for vehicle air conditioner compressor |
| CN101420198A (en) * | 2008-12-05 | 2009-04-29 | 广州华南智信微系统有限公司 | Five phase DC brushless motor controller |
Non-Patent Citations (2)
| Title |
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| 基于机械自动变速器的电动变速驱动转矩控制最优换档策略;董悦航;《上海交通大学学报》;20090228;第43卷(第2期);全文 * |
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