CN107171605A - A kind of conductings of BLDCM bis- or two and three or three conducting switching methods - Google Patents
A kind of conductings of BLDCM bis- or two and three or three conducting switching methods Download PDFInfo
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- CN107171605A CN107171605A CN201710359581.1A CN201710359581A CN107171605A CN 107171605 A CN107171605 A CN 107171605A CN 201710359581 A CN201710359581 A CN 201710359581A CN 107171605 A CN107171605 A CN 107171605A
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- signal
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- conductings
- motor
- logic
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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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of BLDCM bis- or two conductings and three or three conducting switching methods, the hall sensor signal using DSP and CPLD to motor inherently carries out the drive signal that logical operation forms the conducting of brshless DC motor two or two and three or three conductings respectively.Then step signal all the way is sent using DSP, be sent in CPLD as two or two conductings and the switching signal of three or three two programs of conducting.Module is built in CPLD, the step signal and two or two conducting program module parts are made to do and logic, the conducting of non-sum three or three program module of the signal is done and logic, then the result after two above-mentioned logics is done or logic again, this signal exports the driving of two or two conductings in step signal high level, the driving of the conducting of output three or three during low level, and program switching nature.Here it is proposed by the present invention turn on and three or three switching methods turned on for brshless DC motor two or two.The natural switching of two kinds of conduction modes of brshless DC motor can be achieved in the inventive method under conditions of it need not increase hardware device.
Description
Technical field
The present invention relates to brushless direct-current (BLDCM：BrushLess DC Motor) Motor Control Field, especially a kind of profit
The conduction mode of brushless electric machine two or two and the stable switching method of three or three conduction modes are realized with step signal.
Background technology
Electric automobile has the advantages that energy-conservation, efficient, pollution-free, energy sources are extensive, so being driven by brshless DC motor
Dynamic electric automobile is more and more.Current research of the scholar to brushless electric machine is mostly two or two conduction modes, and three or three conductings are ground
That studies carefully is also less, so scholar is also seldom in the switching method research of two kinds of conduction modes to brshless DC motor motor.At present
A kind of method is just being needed, the natural switching of two kinds of modulation systems is realized using the mode of software programming.So using step signal
Two or two conductings and three or three conducting switching methods for switching signal are arisen at the historic moment.
The content of the invention
Can using software programming suitable for brshless DC motor high-precision control field present invention aims at one kind is provided
Realize the conductings of BLDCM bis- or two and three or three conducting switching methods.
To achieve the above object, following technical scheme is employed：The invention mainly comprises with the brushless of position sensor
Direct current generator, dsp chip, CPLD modules, methods described are first to allow brshless DC motor to run three under the mode of two or two conductings
In second, after the rotating speed of brshless DC motor is steady, three or three conduction modes are switched to, specific method step is as follows：
Step 1, using the hall sensor signal of brshless DC motor, dsp chip, CPLD modules, logical operation goes out two respectively
Two conductings and the program module of three or three conductings；Main logic module programming is in CPLD.
Step 2, brshless DC motor is allowed to be switched to three or three conducting operational modes by two or two conductings at 3s, in dsp chip
Principal function in write one section of delay function, make dsp chip send all the way first three second be high level, low electricity is continuously after three seconds
Flat step signal；
Step 3, step signal dsp chip in step 2 sent is sent into CPLD modules, is used as two kinds of conduction modes
Switching signal；
Step 4, two or two conducting program modules and step 2 in step signals do and logic, three or three conducting program modules and
The non-of step signal in step 2 is cooked and logic, then does the result after above-mentioned logic or logic again；Or before the result of logic
It is within three seconds two or two conducting drive signals, is three or three drive signals turned on after three seconds, this drive signal is exported in CPLD modules to be made
For the drive signal of motor inverter.
Compared with prior art, the inventive method has the following advantages that：
1st, in order to only need software programming just can realize the switching of two kinds of conduction modes, development cost is saved.
2nd, with switch-over control signal of the step signal as two kinds of Continuity signals, make the two switch naturally, motor vibrating
It is small.
3rd, by adjusting the change number of times of step signal low and high level, it is possible to achieve brshless DC motor is two kinds of conducting sides
Any switching laws under formula.
Brief description of the drawings
Fig. 1 is division figure in brshless DC motor sector of the present invention.
Fig. 2 is hall sensor signal DSP of the present invention and CPLD two kinds of conduction mode figures of formation.
Fig. 3 is three-phase inverter driving brshless DC motor step signal figure of the present invention.
Fig. 4 is the step signal figure that DSP of the present invention is sent.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
Present invention aims on the basis of existing brushless DC motor control system, using DSP and hall signal, lead to
The direct logical sum DSP of hall signal timing and computing is crossed, it is formed two groups of program modules, two or two conducting journeys in CPLD
Sequence module and three or three conducting program modules.Then step signal is recycled to do the switching of logic realization above two conduction mode.
Comprise the following steps that：
Step 1, using the hall sensor signal of brshless DC motor, dsp chip, CPLD modules, logical operation goes out two respectively
Two conductings and the program module of three or three conductings；Main logic module programming is in CPLD.
Step 2, brshless DC motor is allowed to be switched to three or three conducting operational modes by two or two conductings at 3s, in dsp chip
Principal function in write one section of delay function, make dsp chip send all the way first three second be high level, low electricity is continuously after three seconds
Flat step signal；
Step 3, step signal dsp chip in step 2 sent is sent into CPLD modules, is used as two kinds of conduction modes
Switching signal；
Step 4, two or two conducting program modules and step 2 in step signals do and logic, three or three conducting program modules and
The non-of step signal in step 2 is cooked and logic, then does the result after above-mentioned logic or logic again；Or before the result of logic
It is within three seconds two or two conducting drive signals, is three or three drive signals turned on after three seconds, this drive signal is exported in CPLD modules to be made
For the drive signal of motor inverter.
As shown in figure 1, forming two kinds of conduction mode program modules by hall sensor signal DSP and CPLD.By emulation point
It is to turn off the moment in commutation that analysis, which understands that brshless DC motor was turned on three or the three optimal switching moment turned on two-by-two, can so be obtained
To minimum torque pulsation.This switching point can be the starting point of any sector of six sectors.Simultaneously in order to upon actuation,
Motor can smoothly be run down, selection motor just started and rotating speed close to it is specified when carry out two or three conducting switch.Work as electricity
After angle rotation is turned around, that is, it have rotated 2 π and return to two or three conducting switching points, then calculated again from the position of electrical angle 0 through row, successively
Circulation.
As shown in Fig. 2 brshless DC motor is driven by three-phase inverter, totally six switching tubes, each switching tube list
Solely control.The program module of two or two conduction modes shown in Fig. 1 and the program module of three or three conduction modes export six road signals.
As shown in figure 3, by DSP send all the way first three second be high level, be low level step signal after three seconds.And will
In this step signal feeding CPLD.
As shown in figure 4, step signal that DSP is sent and two or two conduction modes and three or three conduction mode program modules are made in
Logic is done in CPLD.Due to three-phase inverter totally six switching tubes, and each switching tube is individually controlled, and 22 shown in Fig. 4
The program module of conduction mode and the program module of three or three conduction modes actually respectively export six road signals, herein with signal generation all the way
Replace.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
In various modifications and improvement that case is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (1)
1. a kind of conductings of BLDCM bis- or two and three or three conducting switching methods, mainly include the brushless dc with position sensor
Machine, dsp chip, CPLD modules, it is characterised in that methods described is first to allow brshless DC motor to be transported under the mode of two or two conductings
In row three seconds, after the rotating speed of brshless DC motor is steady, three or three conduction modes are switched to, specific method step is as follows：
Step 1, using the hall sensor signal of brshless DC motor, dsp chip, CPLD modules, logical operation goes out two or two and led respectively
Logical and three or three conductings program modules；
Step 2, brshless DC motor is allowed to be switched to three or three conducting operational modes by two or two conductings at 3s, in the master of dsp chip
One section of delay function is write in function, make dsp chip send all the way first three second be high level, be continuously after three seconds low level
Step signal；
Step 3, step signal dsp chip in step 2 sent is sent into CPLD modules, is used as the switching of two kinds of conduction modes
Signal；
Step 4, the step signal in two or two conducting program modules and step 2 is done and logic, three or three conducting program modules and step 2
In the non-of step signal do and logic, then the result after above-mentioned logic is done or logic again；Or first three second of the result of logic
It is two or two conducting drive signals, is three or three drive signals turned on after three seconds, this drive signal is used as electricity in the output of CPLD modules
The drive signal of machine inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710359581.1A CN107171605A (en) | 2017-05-19 | 2017-05-19 | A kind of conductings of BLDCM bis- or two and three or three conducting switching methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710359581.1A CN107171605A (en) | 2017-05-19 | 2017-05-19 | A kind of conductings of BLDCM bis- or two and three or three conducting switching methods |
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| Publication Number | Publication Date |
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| CN107171605A true CN107171605A (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710359581.1A Pending CN107171605A (en) | 2017-05-19 | 2017-05-19 | A kind of conductings of BLDCM bis- or two and three or three conducting switching methods |
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| CN (1) | CN107171605A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713949A (en) * | 2018-12-28 | 2019-05-03 | 武汉工程大学 | A kind of suppressing method and system of torque pulsation of brushless DC motor |
| CN110417310A (en) * | 2019-07-15 | 2019-11-05 | 西北工业大学 | The electronic unified control method with two kinds of operating statuses of power generation of brshless DC motor |
| CN114006556A (en) * | 2021-11-04 | 2022-02-01 | 江苏科技大学 | Control system for reducing square wave operation torque pulsation of brushless direct current motor |
Citations (3)
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| CN1595787A (en) * | 2004-06-30 | 2005-03-16 | 深圳市东方宇之光电子科技有限公司 | Dual-mode control method and system for stepping motor |
| WO2008102714A1 (en) * | 2007-02-21 | 2008-08-28 | Toyota Jidosha Kabushiki Kaisha | Drive control device for rotating electric machine, and vehicle |
| CN102664579A (en) * | 2012-04-17 | 2012-09-12 | 燕山大学 | Control device of electromagnetic brake |
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2017
- 2017-05-19 CN CN201710359581.1A patent/CN107171605A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595787A (en) * | 2004-06-30 | 2005-03-16 | 深圳市东方宇之光电子科技有限公司 | Dual-mode control method and system for stepping motor |
| WO2008102714A1 (en) * | 2007-02-21 | 2008-08-28 | Toyota Jidosha Kabushiki Kaisha | Drive control device for rotating electric machine, and vehicle |
| CN102664579A (en) * | 2012-04-17 | 2012-09-12 | 燕山大学 | Control device of electromagnetic brake |
Non-Patent Citations (2)
| Title |
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| 王亚林: "无刷直流电机的高频链驱动器研究", 《CNKI》 * |
| 谭亚丽等: "无刷直流电机方波正弦波复合驱动器设计", 《电气传动》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713949A (en) * | 2018-12-28 | 2019-05-03 | 武汉工程大学 | A kind of suppressing method and system of torque pulsation of brushless DC motor |
| CN109713949B (en) * | 2018-12-28 | 2020-05-22 | 武汉工程大学 | Method and system for suppressing torque ripple of brushless direct current motor |
| CN110417310A (en) * | 2019-07-15 | 2019-11-05 | 西北工业大学 | The electronic unified control method with two kinds of operating statuses of power generation of brshless DC motor |
| CN114006556A (en) * | 2021-11-04 | 2022-02-01 | 江苏科技大学 | Control system for reducing square wave operation torque pulsation of brushless direct current motor |
| WO2023078017A1 (en) * | 2021-11-04 | 2023-05-11 | 江苏科技大学 | Control system for reducing square-wave-operating torque ripple of brushless direct-current motor |
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Application publication date: 20170915 |
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