CN108847809A - A kind of PMSM Drive System control method and experiment porch - Google Patents
A kind of PMSM Drive System control method and experiment porch Download PDFInfo
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- CN108847809A CN108847809A CN201810590064.XA CN201810590064A CN108847809A CN 108847809 A CN108847809 A CN 108847809A CN 201810590064 A CN201810590064 A CN 201810590064A CN 108847809 A CN108847809 A CN 108847809A
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- Prior art keywords
- drive system
- synchronous motor
- control method
- magnet synchronous
- permanent magnet
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Classifications
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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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
-
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/0003—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/64—Controlling or determining the temperature of the winding
-
- 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention belongs to motor control technology field, a kind of PMSM Drive System control method and experiment porch, including the load of Permanent Magnet Synchronous Motor Controller, vehicle simulation, permanent magnet synchronous motor driving rack and temperature measurement system are disclosed;Control method includes:Field orientable control is controlled based on Optimal Signals injecting strategy;By Field orientable control On-line Estimation permanent-magnetic synchronous motor stator winding temperature;Establish loss model;Dynamic limit is carried out using electric current and temperature of the active heat management control strategy to permanent magnet synchronous motor by the stator winding temperature of estimation;The efficiency-optimization control of magneto is carried out based on improved Fibonacci method using the loss model of building.The logical runnability limit that driving motor may be implemented under electric heating constraint of the present invention maximizes, and improves the reliability of electric car and reduce maintenance cost.
Description
Technical field
The invention belongs to motor control technology field more particularly to a kind of PMSM Drive System control method with
Experiment porch.
Background technique
Currently, the prior art commonly used in the trade is such:
With becoming increasingly conspicuous for global energy crisis and problem of environmental pollution, new-energy automobile has become international automobile industry
The bugle of future thrust, accelerated development has been blowed.Recently as power battery technology, electric drive technology it is continuous
Progress, it is each major country and automaker that electric car, which has become the commanding elevation and growth point of Future New Energy Source automobile,
Common strategy selection.It can believe firmly, in the mileage for marching on towards Green Future, before electric car certainly will obtain broader development
Scape.
Power drive system is the heart of electric car, and horizontal height directly affects the vehicle performance of electric car.And it drives
Dynamic core component and important power output source of the motor as power drive system, is the important component of electric car.One
Aspect, the required motor output of electric car and regenerative power are continuously improved, to meet the needs of different operating condition different automobile types;
On the other hand, it is limited by electric car inner space and cost, this just needs driving motor to high-performance and small size side
To development.Wherein, permanent magnet synchronous motor (PMSM) has small in size, light-weight, high-efficient, speed-regulating range width, power density high
And numerous advantages such as dynamic response is fast become current research and application especially suitable for electric car and its drive system
Hot spot.However, electric car operating condition is complicated, motor temperature fluctuation is larger under limited radiating condition, and excessively high temperature
Degree will will lead to stator winding insulation failure, reduce the motor operation service life, generate larger harm to the operation of electric car.
In electric car application, the challenge of ever-increasing drive system power density needs and thermal environment has been deepened pair
The constraint of PMSM, there is an urgent need to carry out heat to motor to evaluate and optimize and require to develop thermal management technology.The purpose of heat management
It is complex optimum and weighs peak performance, power density and the reliability of system, generally can be divided into passively from the angle of implementation
Heat management and active heat management.Passive heat management forms a heat transfer path using highly heat-conductive material as heat bridge and heat source, from
And maintain the device of the heat bridge other end within the scope of some design temperature.This measure needs to increase auxiliary material and heat dissipation is set
It is standby, increase the volume and quality of motor and its system.Active heat management be then often referred in addition to increase power to certain devices into
Trip temperature control, such as fan cause forced-convection heat transfer, provide the liquid-cooling system of driving by various forms of pumps, with
And local heat source or heat sink stronger temperature control of progress etc. are formed using refrigeration or heat pump techniques.
Although existing research at present discusses electric efficiency Optimal Control Problem, but do not consider in the practical Warm status of motor
Constraint is lower to carry out active thermal optimal control.
In conclusion problem of the existing technology is:
Although existing research at present discusses electric efficiency Optimal Control Problem, but do not consider in the practical Warm status of motor
Constraint is lower to carry out active thermal optimal control.
The prior art utilizes active heat management control strategy to the electricity of permanent magnet synchronous motor in the stator winding temperature of estimation
Stream and temperature carry out on dynamic limit, and the precise control of data is poor.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of PMSM Drive System control method with
Experiment porch.
The invention is realized in this way a kind of PMSM Drive System control method includes the following steps:
Step 1 obtains the practical Warm status of permanent magnet synchronous motor, i.e. permanent magnet synchronous motor based on signal injection method online
Stator loss, real time temperature and available thermal capacity;
Step 2, dynamic adjust the current limit amplitude of motor control.
Further, the PMSM Drive System control method includes:
(1) Field orientable control is controlled based on Optimal Signals injecting strategy;
(2) by Field orientable control On-line Estimation permanent-magnetic synchronous motor stator winding temperature;
(3) loss model is established;
(4) by the stator winding temperature of estimation using active heat management control strategy to the electric current of permanent magnet synchronous motor and
Temperature carries out dynamic limit;
(5) efficiency-optimization control of magneto is carried out based on improved Fibonacci method using the loss model of building.
Further, the active heat management control strategy of step (4), including observation model is established,
If the estimates of parameters of estimated the 1st to the (i-1)-th obtained unit line segment is:
Corresponding point sequence of an outline is:
Calculating i-th of unit line segment l of objective contouriParameter when, iteration to s walk when particle collection be:
Thus particle collection obtains objective contour point and is
Further, in the observation model of foundation, local Snake energy value is calculated as follows:
Global Snake energy value is calculated as follows:
Or only take { Ψj}J=1,2 ..., i-1In withSeveral nearest point sets calculate overall situation Snake energy value jointly.
Further, for RGB color image or HSI spatial color image, each component has corresponding Snake energy
Value, i.e.,
It is right respectivelyWithCarry out normalizing
Change, localized particle weight is calculated as follows;
Particle overall situation weight is calculated as follows:
Taking particle weights is the arithmetic average of part and global value, i.e.,
Finally, particle weights are normalized, the Minimum Mean Squared Error estimation of parameter is carried out.
Another object of the present invention is to provide a kind of meters for realizing the PMSM Drive System control method
Calculation machine program.
Another object of the present invention is to provide a kind of letters for realizing the PMSM Drive System control method
Cease data processing terminal.
Another object of the present invention is to provide a kind of computer readable storage mediums, including instruction, when it is in computer
When upper operation, so that computer executes the PMSM Drive System control method.
Another object of the present invention is to provide a kind of experiment porch of PMSM Drive System, including permanent magnetism are same
Walk electric machine controller;The Permanent Magnet Synchronous Motor Controller is electrically connected with vehicle simulation load, permanent magnet synchronous motor driving rack
And temperature measurement system.
Further, the permanent magnet synchronous motor driving rack includes voltage source inverter.
Advantages of the present invention and good effect are:
The present invention is based on real time temperature feedback active heat management control strategy, and by this strategy with the control of PMSM field orientation
(FOC) algorithm integration is made, reaches and proposes high performance purpose to greatest extent in electric heating limitation, improve power density and reliability,
Efficiency of energy utilization can be improved and save the runnability pole of vehicle-mounted energy storage and driving motor under electric heating constraint
Limit maximizes, and improves the reliability of electric car and reduce maintenance cost.
The present invention is by the stator winding temperature of estimation using active heat management control strategy to the electricity of permanent magnet synchronous motor
Stream and temperature carry out improving the distribution of particle in dynamic limit, accelerate convergence rate;Establish the sight based on Snake energy function
Model is surveyed, which is capable of the effect of preferable quantitative description contour extraction of objects.
By simulation result it is found that present invention employs the measurement models based on Snake energy function, although in pre- measuring wheel
Interfere more when wide, but objective contour still can accurately be predicted and be extracted to its algorithm, this plays subsequent segmentation very big
Effect.
The problems such as effectively alleviating by the interference of initial profile point and slow convergence rate, especially under Low SNR
Contours extract, the objective contour extracted is also highly satisfactory, is better than general contours extract algorithm.
Detailed description of the invention
Fig. 1 is the flow chart of PMSM Drive System control method provided in an embodiment of the present invention;
Fig. 2 is the structural block diagram of the experiment porch of PMSM Drive System provided in an embodiment of the present invention;
In figure:1, Permanent Magnet Synchronous Motor Controller;2, vehicle simulation loads;3, permanent magnet synchronous motor drives rack;4, warm
Spend measuring system.
Fig. 3 is the principle of PMSM Drive System control method and experiment porch provided in an embodiment of the present invention
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
As shown in Figure 1, PMSM Drive System control method includes the following steps:
S101:Obtain the practical Warm status of permanent magnet synchronous motor online based on signal injection method, i.e. permanent magnet synchronous motor
Stator loss, real time temperature and available thermal capacity;
S102:Dynamic adjusts the current limit amplitude of motor control.
As shown in Fig. 2-Fig. 3, the experiment porch of PMSM Drive System provided in an embodiment of the present invention, including forever
Magnetic-synchro electric machine controller 1;The Permanent Magnet Synchronous Motor Controller 1 is electrically connected with vehicle simulation load 2, permanent magnet synchronous motor drives
Dynamic rack 3 and temperature measurement system 4.
As the preferred embodiment of the present invention, the permanent magnet synchronous motor driving rack 3 includes voltage source inverter.
As the preferred embodiment of the present invention, the control process packet of the control algolithm of the Permanent Magnet Synchronous Motor Controller 1
It includes:
(1) Field orientable control is controlled based on Optimal Signals injecting strategy;
(2) by Field orientable control On-line Estimation permanent-magnetic synchronous motor stator winding temperature;
(3) loss model is established;
(4) by the stator winding temperature of estimation using active heat management control strategy to the electric current of permanent magnet synchronous motor and
Temperature carries out dynamic limit;
(5) efficiency-optimization control of magneto is carried out based on improved Fibonacci method using the loss model of building.
Further, the active heat management control strategy of step (4), including observation model is established,
If the estimates of parameters of estimated the 1st to the (i-1)-th obtained unit line segment is:
Corresponding point sequence of an outline is:
Calculating i-th of unit line segment l of objective contouriParameter when, iteration to s walk when particle collection be:
Thus particle collection obtains objective contour point and is
Further, in the observation model of foundation, local Snake energy value is calculated as follows:
Global Snake energy value is calculated as follows:
Or only take { Ψj}J=1,2 ..., i-1In withSeveral nearest point sets calculate overall situation Snake energy value jointly.
Further, for RGB color image or HSI spatial color image, each component has corresponding Snake energy
Value, i.e.,
It is right respectivelyWithCarry out normalizing
Change, localized particle weight is calculated as follows;
Particle overall situation weight is calculated as follows:
Taking particle weights is the arithmetic average of part and global value, i.e.,
Finally, particle weights are normalized, the Minimum Mean Squared Error estimation of parameter is carried out.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When using entirely or partly realizing in the form of a computer program product, the computer program product include one or
Multiple computer instructions.When loading on computers or executing the computer program instructions, entirely or partly generate according to
Process described in the embodiment of the present invention or function.The computer can be general purpose computer, special purpose computer, computer network
Network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or from one
Computer readable storage medium is transmitted to another computer readable storage medium, for example, the computer instruction can be from one
A web-site, computer, server or data center pass through wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)
Or wireless (such as infrared, wireless, microwave etc.) mode is carried out to another web-site, computer, server or data center
Transmission).The computer-readable storage medium can be any usable medium or include one that computer can access
The data storage devices such as a or multiple usable mediums integrated server, data center.The usable medium can be magnetic Jie
Matter, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk Solid
State Disk (SSD)) etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of PMSM Drive System control method, which is characterized in that PMSM Drive System control
Method includes the following steps:
Step 1, obtained online based on signal injection method the permanent magnet synchronous motor of permanent magnet synchronous motor stator loss, in real time temperature
Degree and the practical Warm status of available thermal capacity;
Step 2, dynamic adjust the current limit amplitude of motor control.
2. PMSM Drive System control method as described in claim 1, which is characterized in that the permanent magnet synchronous motor
Drive system control method includes:
(1) Field orientable control is controlled based on Optimal Signals injecting strategy;
(2) by Field orientable control On-line Estimation permanent-magnetic synchronous motor stator winding temperature;
(3) loss model is established;
(4) utilize active heat management control strategy to the electric current and temperature of permanent magnet synchronous motor by the stator winding temperature of estimation
Carry out dynamic limit;
(5) efficiency-optimization control of magneto is carried out based on improved Fibonacci method using the loss model of building.
3. PMSM Drive System control method as claimed in claim 2, which is characterized in that
The active heat management control strategy of step (4), including observation model is established,
If the estimates of parameters of estimated the 1st to the (i-1)-th obtained unit line segment is:
Corresponding point sequence of an outline is:
Calculating i-th of unit line segment l of objective contouriParameter when, iteration to s walk when particle collection be:
Thus particle collection obtains objective contour point and is
4. PMSM Drive System control method as claimed in claim 3, which is characterized in that
In the observation model of foundation, local Snake energy value is calculated as follows:
Global Snake energy value is calculated as follows:
Or only take { Ψj}J=1,2 ..., i-1In withSeveral nearest point sets calculate overall situation Snake energy value jointly.
5. PMSM Drive System control method as claimed in claim 3, which is characterized in that
For RGB color image or HSI spatial color image, each component has corresponding Snake energy value, i.e.,
It is right respectivelyWithIt is normalized, presses
Following formula calculates localized particle weight;
Particle overall situation weight is calculated as follows:
Taking particle weights is the arithmetic average of part and global value, i.e.,
Finally, particle weights are normalized, the Minimum Mean Squared Error estimation of parameter is carried out.
6. a kind of computer journey for realizing PMSM Drive System control method described in Claims 1 to 5 any one
Sequence.
7. a kind of information data for realizing PMSM Drive System control method described in Claims 1 to 5 any one
Processing terminal.
8. a kind of computer readable storage medium, including instruction, when run on a computer, so that computer is executed as weighed
Benefit requires PMSM Drive System control method described in 1~5 any one.
9. a kind of experiment porch of PMSM Drive System, which is characterized in that the PMSM Drive System
Experiment porch include Permanent Magnet Synchronous Motor Controller;The Permanent Magnet Synchronous Motor Controller be electrically connected with vehicle simulation load,
Permanent magnet synchronous motor drives rack and temperature measurement system.
10. the experiment porch of PMSM Drive System as claimed in claim 9, which is characterized in that the permanent-magnet synchronous
Motor driven rack includes voltage source inverter.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110247617A (en) * | 2019-06-19 | 2019-09-17 | 宁波诺丁汉大学 | The active heat management method of permanent magnet synchronous motor modular event driven device based on power distribution method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105391360A (en) * | 2015-10-29 | 2016-03-09 | 湖南大学 | Optimal efficiency control method of electric vehicle under electroghermal constraint, controller, and system |
CN105811832A (en) * | 2016-05-06 | 2016-07-27 | 湖南大学 | Temperature estimation method, device and system of permanent-magnet synchronous motor stator |
-
2018
- 2018-06-08 CN CN201810590064.XA patent/CN108847809A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105391360A (en) * | 2015-10-29 | 2016-03-09 | 湖南大学 | Optimal efficiency control method of electric vehicle under electroghermal constraint, controller, and system |
CN105811832A (en) * | 2016-05-06 | 2016-07-27 | 湖南大学 | Temperature estimation method, device and system of permanent-magnet synchronous motor stator |
Non-Patent Citations (4)
Title |
---|
JORIS LEMMENS等: "Optimal Control of Traction Motor Drives Under Electrothermal Constraints", 《IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS》 * |
JORIS LEMMENS等: "ptimal Control of Traction Motor Drives Under Electrothermal Constraints", 《IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS》 * |
伊力哈木•亚尔买买提: "基于粒子滤波的彩色图像轮廓提取算法研究", 《计算机仿真》 * |
彭国彬等: "应用qZSI的车用IPMSM驱动系统能效优化控制", 《机械工程学报》 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110247617A (en) * | 2019-06-19 | 2019-09-17 | 宁波诺丁汉大学 | The active heat management method of permanent magnet synchronous motor modular event driven device based on power distribution method |
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Application publication date: 20181120 |