CN108768224A - A kind of torque fluctuations method caused by reduction brshless DC motor commutation process - Google Patents
A kind of torque fluctuations method caused by reduction brshless DC motor commutation process Download PDFInfo
- Publication number
- CN108768224A CN108768224A CN201810614003.2A CN201810614003A CN108768224A CN 108768224 A CN108768224 A CN 108768224A CN 201810614003 A CN201810614003 A CN 201810614003A CN 108768224 A CN108768224 A CN 108768224A
- Authority
- CN
- China
- Prior art keywords
- brshless
- inverter
- constant
- diode
- current source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to a kind of torque fluctuations methods caused by reduction brshless DC motor commutation process, including constant-current source, digital signal processor, inverter and brshless DC motor, the anode of the cathode voltage input terminal connection inverter of the constant-current source, the cathode of the cathode voltage input terminal connection inverter of constant-current source；The first six road pulse signal output end of the digital signal processor is connected respectively six road pulse signal input terminals of inverter；A feet, b feet and the c feet of the inverter are correspondingly connected with A, B, C three-phase windings of brshless DC motor in order respectively.The present invention effectively inhibits motor output torque pulsation, reduces switching loss and noise.
Description
Technical field
The present invention relates to motor control technology fields, cause more particularly to a kind of reduction brshless DC motor commutation process
Torque fluctuations method.
Background technology
Brushless, permanently excited direct current motor possesses the speed adjusting performance to compare favourably with direct current generator, and performance is stablized, and circuit is simple, control
System is accurate, and therefore, electromagnetism is typically used as actuator and is widely used in the industry.
For current control mode, the torque pulsation of brshless DC motor in the process of running is larger, it is easy to produce
Raw noise, even running and service life to system bring adverse effect.And electric machine control system is typically to pass through PWM skills
The break-make duty ratio of art adjusting three-phase full-bridge inverter power tube carrys out the rotating speed of regulation motor, and it is same to be typically necessary multiple power tubes
Shi Jinhang high-frequency works, switching loss is larger, is easy to happen failure.
Invention content
Technical problem to be solved by the invention is to provide torques caused by a kind of reduction brshless DC motor commutation process
Wave method can inhibit the torque pulsation of brshless DC motor in the process of running.
The technical solution adopted by the present invention to solve the technical problems is：A kind of reduction brshless DC motor is provided to commutate
Torque fluctuations method caused by journey, including constant-current source, digital signal processor, inverter and brshless DC motor, the constant current
The anode of the cathode voltage input terminal connection inverter in source, the cathode of the cathode voltage input terminal connection inverter of constant-current source；Institute
The first six the road pulse signal output end for stating digital signal processor is connected respectively six road pulse signal input terminals of inverter；
A feet, b feet and the c feet of the inverter are correspondingly connected with A, B, C three-phase windings of brshless DC motor in order respectively.
The constant-current source includes power supply, power tube, the first diode, the second diode and inductance；First diode
Cathode and power tube collector connect, and simultaneously with power supply anode connection, the cathode of the second diode, the hair of power tube
One end of emitter-base bandgap grading and inductance connects simultaneously, the anode connection of the other end of inductance and the first diode, and is used as constant-current source simultaneously
Anode, the anode of the second diode connects with the cathode of power supply, and simultaneously as the cathode of constant-current source, the base stage work of power tube
For the pulse signal input terminal of constant-current source.
The power supply is DC power supply.
The inductance is afterflow inductance.
First diode and the second diode are fly-wheel diode.
The inverter is the three-phase bridge type converter being made of six power tubes.
Advantageous effect
Due to the adoption of the above technical solution, compared with prior art, the present invention having the following advantages that and actively imitating
Fruit：The present invention replaces traditional voltage source using constant-current source, and 6 power tubes on three-phase full-bridge inverter are only responsible for commutation, no
PWM pulsewidth modulations are carried out, to reduce switching loss.Single tube PWM pulsewidth modulations are carried out using power tube on busbar to control
Bus current, and by the inductance afterflow on busbar, keep the electric current of output nearly constant.Therefore, phase current is in conducting region phase
To constant, and then inhibit the torque pulsation of brshless DC motor in the process of running.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of torque fluctuations method caused by reduction brshless DC motor commutation process, such as
Shown in Fig. 1, including constant-current source, digital signal processor, inverter and brshless DC motor, the cathode voltage of the constant-current source are defeated
Enter the anode of end connection inverter, the cathode of the cathode voltage input terminal connection inverter of constant-current source；The Digital Signal Processing
The first six road pulse signal output end of device is connected respectively six road pulse signal input terminals of inverter；The a of the inverter
Foot, b feet and c feet are correspondingly connected with A, B, C three-phase windings of brshless DC motor in order respectively.Wherein, the inverter is
The three-phase bridge type converter being made of six power tube T1~T6.
The constant-current source includes power supply U, power tube T, the first diode D1, the second diode D2 and inductance L；Described first
The cathode of diode D1 is connect with the collector of power tube T, and simultaneously with the anode connection of power supply U, the second diode D2's is negative
One end of pole, the emitter of power tube T and inductance L connects simultaneously, and the anode of the other end of inductance L and the first diode D1 are even
It connects, and simultaneously as the anode of constant-current source, the anode of the second diode D2 is connected with the cathode of power supply, and is used as constant-current source simultaneously
Cathode, the pulse signal input terminal of the base stage of power tube T as constant-current source.Wherein, the power supply U is DC power supply.It is described
Inductance L is afterflow inductance.The first diode D1 and the second diode D2 is fly-wheel diode.
Present embodiment replaces traditional voltage source, 6 power tubes on three-phase full-bridge inverter only to bear using constant-current source
Duty commutation, without PWM pulsewidth modulations, to reduce switching loss.Single tube PWM pulsewidth tune is carried out using power tube on busbar
System carrys out control bus electric current, and by the inductance afterflow on busbar, keeps the electric current of output nearly constant.
Control system shown in FIG. 1 is speed and current double closed loop control system, and wherein outer shroud is speed ring, electric machine controller
Feedback n of the rotating speed as motor speed ring of motor is calculated in real timef, n is given with the motor speed of settingrBy pi regulator
It is controlled, rotating speed outer shroud output valve is set as i as the given of current inner loopr.Inner ring is electric current loop, and electric machine controller is real-time
Sample feedback i of the busbar inductive current as current inner loopf.Pass through the PWM pulsewidth tune of the power tube on Hysteresis control constant-current source
System, it is ensured that the upper electric current loop given value of current actual value tracking on busbar.Work as ifMore than irWhen, the last arteries and veins all the way of electric machine controller
The power tube T shutdowns in signal control constant-current source are rushed, to ensure electric current ifIt drops in electric current loop, works as ifLess than irWhen, motor control
The device processed power tube T that finally pulse signal controls in constant-current source all the way is open-minded, to ensure electric current ifIt rises in electric current loop.
When brshless DC motor commutates, the position signal sent out using electric machine controller detection motor Hall sensor will
The position signal of hall sensor detected is sent into inside electric machine controller, and electric machine controller is according to the Hall sensor received
Signal controls the on off state of inverter power pipe, and the switch by the PWM mouth output inverter switching tubes of electric machine controller is believed
Number, correctly commutated.
It is not difficult to find that power tube and inductance is added in the present invention on busbar, single tube modulation is carried out using power tube on busbar
Carry out control bus electric current, the rotating speed that PWM pulsewidth modulations carry out regulation motor, but also afterflow can be not only carried out instead of inverter bridge
Inductance L makes bus current pulsation almost nil, effectively inhibits motor output torque pulsation, reduces switching loss and noise,
Keep brshless DC motor operation more steady, safe, expands its application range.
Claims (6)
1. a kind of torque fluctuations method caused by reduction brshless DC motor commutation process, including constant-current source, Digital Signal Processing
Device, inverter and brshless DC motor, which is characterized in that the cathode voltage input terminal connection inverter of the constant-current source is just
Pole, the cathode of the cathode voltage input terminal connection inverter of constant-current source；The first six road pulse signal of the digital signal processor
Output end is connected respectively six road pulse signal input terminals of inverter；A feet, b feet and the c feet of the inverter are pressed suitable respectively
A, B, C three-phase windings of sequence and brshless DC motor are correspondingly connected with.
2. torque fluctuations method caused by reduction brshless DC motor commutation process according to claim 1, feature exist
In the constant-current source includes power supply, power tube, the first diode, the second diode and inductance；The cathode of first diode
Connect with the collector of power tube, and simultaneously with power supply anode connection, the cathode of the second diode, the emitter of power tube and
One end of inductance connects simultaneously, the anode connection of the other end of inductance and the first diode, and simultaneously as the anode of constant-current source,
The anode of second diode is connected with the cathode of power supply, and simultaneously as the cathode of constant-current source, the base stage of power tube is as constant current
The pulse signal input terminal in source.
3. torque fluctuations method caused by reduction brshless DC motor commutation process according to claim 2, feature exist
In the power supply is DC power supply.
4. torque fluctuations method caused by reduction brshless DC motor commutation process according to claim 2, feature exist
In the inductance is afterflow inductance.
5. torque fluctuations method caused by reduction brshless DC motor commutation process according to claim 2, feature exist
In first diode and the second diode are fly-wheel diode.
6. torque fluctuations method caused by reduction brshless DC motor commutation process according to claim 1, feature exist
In the inverter is the three-phase bridge type converter being made of six power tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614003.2A CN108768224A (en) | 2018-06-14 | 2018-06-14 | A kind of torque fluctuations method caused by reduction brshless DC motor commutation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614003.2A CN108768224A (en) | 2018-06-14 | 2018-06-14 | A kind of torque fluctuations method caused by reduction brshless DC motor commutation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108768224A true CN108768224A (en) | 2018-11-06 |
Family
ID=64021666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810614003.2A Pending CN108768224A (en) | 2018-06-14 | 2018-06-14 | A kind of torque fluctuations method caused by reduction brshless DC motor commutation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108768224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600078A (en) * | 2018-11-21 | 2019-04-09 | 东华大学 | Permanent-magnet brushless DC electric machine torque fluctuations suppressing method based on tandem type converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710801A (en) * | 2005-06-21 | 2005-12-21 | 北京航空航天大学 | Power-consumption control system of small armature electric induction permanent magnet brush-less DC motor |
| CN204089664U (en) * | 2014-11-07 | 2015-01-07 | 黑龙江省科学院科技孵化中心 | Based on the brushless direct current motor drive circuit of Buck converter |
| CN104300854A (en) * | 2014-11-07 | 2015-01-21 | 黑龙江省科学院科技孵化中心 | Brushless direct current motor drive circuit based on Buck convertor |
| CN104753414A (en) * | 2015-03-20 | 2015-07-01 | 南京航空航天大学 | Buck circuit brushless direct current motor driving system and control method thereof |
-
2018
- 2018-06-14 CN CN201810614003.2A patent/CN108768224A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710801A (en) * | 2005-06-21 | 2005-12-21 | 北京航空航天大学 | Power-consumption control system of small armature electric induction permanent magnet brush-less DC motor |
| CN204089664U (en) * | 2014-11-07 | 2015-01-07 | 黑龙江省科学院科技孵化中心 | Based on the brushless direct current motor drive circuit of Buck converter |
| CN104300854A (en) * | 2014-11-07 | 2015-01-21 | 黑龙江省科学院科技孵化中心 | Brushless direct current motor drive circuit based on Buck convertor |
| CN104753414A (en) * | 2015-03-20 | 2015-07-01 | 南京航空航天大学 | Buck circuit brushless direct current motor driving system and control method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王晓光等: "基于电流型斩波控制器的盘式无铁心永磁同步电机控制方法", 《中国电机工程学报》 * |
| 王晓远等: "基于电流矢量的盘式无铁心永磁同步电机瞬时转矩控制", 《电工技术学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600078A (en) * | 2018-11-21 | 2019-04-09 | 东华大学 | Permanent-magnet brushless DC electric machine torque fluctuations suppressing method based on tandem type converter |
| CN109600078B (en) * | 2018-11-21 | 2022-01-11 | 东华大学 | Permanent magnet brushless direct current motor torque fluctuation suppression method based on cascade converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mishra et al. | Solar photovoltaic array dependent dual output converter based water pumping using switched reluctance motor drive | |
| US7348739B2 (en) | Motor driving apparatus | |
| US10411618B2 (en) | Air conditioner, and method and device for controlling its compressor to stop | |
| CN108448972B (en) | The simple power converter system of separate excitation high-gain switched reluctance machines | |
| WO2016188462A1 (en) | Magnetically suspended bearing switching power amplifier and control method thereof | |
| US20150092450A1 (en) | Commutation current steering method in a zero volt switching power converter using a synchronous rectifier | |
| CN107231110B (en) | A kind of high-power asynchronous motor feedforward compensation inhibition Stator Current Harmonic method | |
| CN109347371A (en) | A kind of brshless DC motor commutation torque ripple suppressing method based on current forecasting | |
| CN111049392A (en) | Double-active-bridge expanded phase-shifting minimum reflux power control method based on coordinate transformation | |
| CN114079404B (en) | Parallel structure biconvex high-voltage direct-current starting power generation system and starting control method thereof | |
| CN108768224A (en) | A kind of torque fluctuations method caused by reduction brshless DC motor commutation process | |
| US20210359611A1 (en) | Control method for dc converter and dc converter | |
| CN108540026B (en) | Silicon carbide/gallium nitride MOSFET-based permanent magnet synchronous motor drive control real-time voltage regulating circuit | |
| CN106533210A (en) | Single-phase buck-boost AC-DC converter and control method thereof | |
| WO2022052495A1 (en) | Control device and method for power amplifier, and motor | |
| CN211981785U (en) | Direct-current brushless motor driving system for cook machine and direct-current brushless motor | |
| CN112542978B (en) | Motor driving system based on bidirectional staggered parallel DC-DC inverter | |
| CN111741548B (en) | Low-power-consumption induction heating power control system | |
| CN110896295B (en) | Low-ripple driving method for alternating current motor | |
| CN114744934A (en) | Permanent magnet synchronous motor control system and method adopting sensorless double-ring starting technology | |
| CN114696719A (en) | Motor drive system and compressor | |
| CN111817548A (en) | Intelligent power module | |
| CN107517021B (en) | Bidirectional five-level direct current conversion circuit and generator excitation system comprising same | |
| CN109600078B (en) | Permanent magnet brushless direct current motor torque fluctuation suppression method based on cascade converter | |
| CN106655733B (en) | A kind of leakage inductance energy feedback type Ripple Suppression inverter and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181106 |
|
| WD01 | Invention patent application deemed withdrawn after publication |