CN108390487A - A kind of design method promoting driving motor mechanical property - Google Patents
A kind of design method promoting driving motor mechanical property Download PDFInfo
- Publication number
- CN108390487A CN108390487A CN201810042166.8A CN201810042166A CN108390487A CN 108390487 A CN108390487 A CN 108390487A CN 201810042166 A CN201810042166 A CN 201810042166A CN 108390487 A CN108390487 A CN 108390487A
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- China
- Prior art keywords
- motor
- branch
- parallel
- driving motor
- winding
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- 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
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/188—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays wherein the motor windings are switched from series to parallel or vice versa to control speed or torque
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention provides a kind of design method promoting driving motor mechanical property, belongs to design of electrical motor and application field.Low current, big torque when the present invention is started for the general driving motor of solution, high-revolving mechanical property requirement when normal operation, and conventional design layout the problem of being difficult to take into account two demands simultaneously, it proposes with multiple parallel branches or more and around the symmetric winding structure of radical, and combine the switch control strategy of switch element, to complete the series connection between winding multiple branch circuit and switching in parallel, with regulation motor effective turn, back-emf is adjusted, it is final to realize a kind of method for promoting mechanical characteristics of motor regulating power.This method can effectively solve starting characteristic in driving motor design process and high-speed operating characteristic is difficult to the contradiction taken into account, and design and application to driving motor and its drive system are of great significance.
Description
Technical field
The present invention relates to belong to design of electrical motor and application field, specifically a kind of design for promoting driving motor mechanical property
Method.
Background technology
For driving motor design, by taking motor in electric automobile as an example, it is desirable that in automobile start, main drive motor has low
Fast big torque starting ability；Meanwhile during galloping, main drive motor should have high rotating speed service ability.And it is right
For direct current brushless permanent magnet driving motor, generally also require motor that there is higher starting torque, to improve motor response
Energy；Rated speed also should be high as possible simultaneously, to increase power of motor density.However, the big torque starting ability of motor turns with high
Fast service ability cannot concurrently reach optimal, need to trade off choice, and be driven device operating voltage, operating current limit
System, to limit the mechanical movement ability of driving motor.
Invention content
The present invention is in view of the above-mentioned problems, propose with multiple parallel branches or more and around the symmetric winding structure of radical, and tie
The switch control strategy of combination switch element, to complete the series connection between winding multiple branch circuit and switching in parallel, with the effective circle of regulation motor
Number adjusts back-emf, final to realize a kind of method for promoting mechanical characteristics of motor regulating power.This method can effectively be solved not
Under the premise of reducing winding utilization, driving motor starting and high speed capability are improved, driving motor and its drive system are set
Meter and application, are of great significance.
A kind of design method promoting driving motor mechanical property, includes the following steps：
(1) in polyphase machine winding process, multiple parallel branches or the parallel coiling of more conducting wires are used per phase winding, with
It realizes per phase multi-branch windings design, while ensureing the symmetry between two branches on circuit and magnetic circuit, reduce in each branch
Ring current.
(2) per each branch of phase winding, both ends are connected to electronic power switch device, by controlling leading for each switching device
Logical and shutdown, realize the series connection of each branch with it is in parallel.In the operational process of motor, pass through series connection and in parallel, the tune of each branch
Whole motor is often in series the number of turns, line resistance, and then adjusts armature supply, back-emf, to realize the adjusting to mechanical characteristics of motor.
Beneficial effects of the present invention are as follows：
(1) under the premise of not increasing motor size, not reducing winding utilization, it can conveniently extend motor and rise
Dynamic, high-speed cruising ability adjustable range.
(2) with the motor of size, with the application of the invention, can have higher starting torque, broader running speed section, with
And higher working efficiency.
(3) present invention is simple and effective, easy to implement, and does not increase production cost.
Description of the drawings
Fig. 1 is two branch winding schematic diagram of every phase；
Fig. 2 is the connection diagram of two branch winding and electronic power switch device of every phase；
Fig. 3 is a kind of direct current brushless permanent magnet motor series connection full voltage, the torque of full voltage in parallel and half pressure in parallel, electric current
With the variation relation of rotating speed.
Specific implementation mode
Below in conjunction with the attached drawing in the present invention, a kind of implementation process in the present invention is fully described by.
The present invention provides a kind of design method promoting driving motor mechanical property, includes the following steps：
(1) as shown in Figure 1, in machine winding winding process, two branches or two conducting wire parallel synchronous are used per phase winding
3. and 2. 4. 1. coiling obtains two winding branches, to realize per two local road design of phase winding.Can ensure in this way between two branches
There is preferable symmetry on circuit and magnetic circuit, reduce the ring current in each branch.
(2) as shown in Fig. 2, two and being respectively connected to electronic power switch device around the output end of branch, pass through control
The conducting and shutdown of S1, S2, S3 switching device, realize it is each and around the series connection of branch with it is in parallel.
1. 3. (3) as shown in Fig. 2, making S3 be connected when controller sends out signal, and when S1, S2 are turned off, two winding branches
And 2. 4. be series connection.At this point, motor torque, electric current-speed curves (I as shown in Figure 3 under full voltageString Udc=1-n、TString Udc=1=
TAnd Udc=0.5-n)。
1. 3. (4) as shown in Fig. 2, making S1, S2 be connected when controller sends out signal, and when S3 is turned off, two winding branches
And 2. 4. be parallel connection.At this point, motor is in full voltage and half pressure torque, electric current-speed curves (I as shown in Figure 3And Udc=1-n、
IAnd Udc=0.5-n、TAnd Udc=1-n、TString Udc=1=TAnd Udc=0.5-n)。
(5) as shown in figure 3, when two branches are connected, under torque, DC bus current is the 50% of parallel way.
Be conducive to motor under the conditions of no more than driver maximum operating currenbt, obtain higher driving torque.
(6) as shown in figure 3, when two branch circuit parallel connections, the maximum (top) speed under full voltage improves 100% than series system.
Be conducive to motor under the conditions of no more than driver maximum working voltage, obtain higher running speed.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Belong to those skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in all are answered
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (3)
1. a kind of design method promoting driving motor mechanical property, it is characterised in that include the following steps：
(1) in polyphase machine winding process, multiple parallel branches are used per phase winding, or by the parallel coiling of more conducting wires,
It to realize per phase multi-branch windings design, while ensureing the symmetry between two branches on circuit and magnetic circuit, reduces in each branch
Ring current.
(2) per phase winding each branch, both ends are connected to electronic power switch device, by control the conducting of each switching device with
Shutdown, realize the series connection of each branch with it is in parallel.In the operational process of motor, pass through series connection and in parallel, the adjustment electricity of each branch
Machine is often in series the number of turns, line resistance, and then adjusts armature supply, back-emf, to realize the adjusting to mechanical characteristics of motor.
2. promoting the design method of driving motor mechanical property as described in claim 1, it is characterised in that：The step (1)
Detailed process is as follows：
1-1) when polyphase machine winding makes, according to driving motor starting performance, high-speed operation performance demand and motor master
Size is wanted, determines parallel branch number or the conducting wire radical of parallel coiling.By taking direct current brushless permanent magnet motor as an example, runnability can
It is determined by formula (1).
In formula：KTFor brushless motor torque constant；
KEFor brushless motor potential constant；
KnFor brushless motor speed constant；
N is brushless motor per phase winding total number of turns；
A is brushless motor per phase winding parallel branch number；
Φ is brushless motor air gap main field；
R is brushless motor line resistance；
KTsFor a constant, value depends on the structure design of brushless motor；
KEsFor a constant, value depends on the structure design of brushless motor.
1-2) be electromagnetic structure between ensureing each branch symmetry, using symmetric parallel or parallel winding method, and line number should be
Even number.
3. promoting the design method of driving motor mechanical property as described in claim 1, it is characterised in that：The step (2)
Detailed process is as follows：
3-1) each branch of the driving motor per phase winding, both ends are coupled with electronic power switch device.Then, pass through switch
Device is connected with other branches or inverter circuit leading-out terminal.
3-2) when motor needs to improve the machine torque under certain rotating speed, other than increasing the means such as armature supply, it can pass through
Switching device is controlled, makes every mutually each branch series connection, increases the equivalent the number of turns of armature winding, armature supply be not significantly increased to realize
Under conditions of, increase electromechanics torque.
3-3) when motor needs to improve its maximum running speed, except through weak magnetism speed expansion, increase the hands such as DC bus-bar voltage
Section is outer, can make every mutually each branch circuit parallel connection, reduce equivalent the number of turns by controlling switching device, with realize be not significantly increased it is weak
Under conditions of magnetoelectricity stream, the motor operation range of speeds is extended.
3-4) in above-mentioned adjustment process, each branch of machine winding will all be fully used, and not reduce winding utilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042166.8A CN108390487A (en) | 2018-01-09 | 2018-01-09 | A kind of design method promoting driving motor mechanical property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042166.8A CN108390487A (en) | 2018-01-09 | 2018-01-09 | A kind of design method promoting driving motor mechanical property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108390487A true CN108390487A (en) | 2018-08-10 |
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ID=63076790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810042166.8A Pending CN108390487A (en) | 2018-01-09 | 2018-01-09 | A kind of design method promoting driving motor mechanical property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108390487A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228895A (en) * | 2018-10-25 | 2019-01-18 | 李洪广 | A kind of range extender of electric vehicle and control method |
| CN109495054A (en) * | 2018-12-24 | 2019-03-19 | 重庆理工大学 | A kind of multiwinding machine winding change-over switch and control method |
| CN109501609A (en) * | 2018-12-05 | 2019-03-22 | 李洪广 | Mobile charging electric vehicle |
| CN113067521A (en) * | 2019-12-30 | 2021-07-02 | 北京新能源汽车股份有限公司 | Winding control method and device of driving motor and electric automobile |
-
2018
- 2018-01-09 CN CN201810042166.8A patent/CN108390487A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228895A (en) * | 2018-10-25 | 2019-01-18 | 李洪广 | A kind of range extender of electric vehicle and control method |
| CN109501609A (en) * | 2018-12-05 | 2019-03-22 | 李洪广 | Mobile charging electric vehicle |
| CN109501609B (en) * | 2018-12-05 | 2023-09-15 | 李洪广 | Mobile charging electric vehicle |
| CN109495054A (en) * | 2018-12-24 | 2019-03-19 | 重庆理工大学 | A kind of multiwinding machine winding change-over switch and control method |
| CN109495054B (en) * | 2018-12-24 | 2020-04-07 | 重庆理工大学 | Multi-winding motor winding switching device and control method |
| CN113067521A (en) * | 2019-12-30 | 2021-07-02 | 北京新能源汽车股份有限公司 | Winding control method and device of driving motor and electric automobile |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180810 |
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| WD01 | Invention patent application deemed withdrawn after publication |