CN206962744U - A kind of Switched Reluctance Motor - Google Patents
A kind of Switched Reluctance Motor Download PDFInfo
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- CN206962744U CN206962744U CN201720692854.XU CN201720692854U CN206962744U CN 206962744 U CN206962744 U CN 206962744U CN 201720692854 U CN201720692854 U CN 201720692854U CN 206962744 U CN206962744 U CN 206962744U
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Abstract
The utility model provides a kind of Switched Reluctance Motor, the input of direct Instantaneous torque control device receives given rotating speed, the given rotating speed of input and the actual speed of feedback ask for state error, the fuzzy PI type Fuzzy speed regulator of input, by fuzzy control and PI regulation complex control algorithm processing, due to the increase of integral term, the steady-state error of system can be effectively eliminated, keeps the stable operation of whole governing system.Automatically adjusting for turn-on angle is added on the basis of direct instantaneous torque PI type Fuzzy adjustment control, commutation process is changed by constantly regulate turn-on angle, so as to suppress current spike, improves the purpose of motor operation efficiency.
Description
Technical field
The present invention relates to switched reluctance machines field, more particularly to a kind of Switched Reluctance Motor.
Background technology
Switched reluctance machines (SRM) have the characteristics that it is simple in construction firmly, reliability it is high low with manufacturing cost.In recent years with
Exacerbation and the energy crisis of global environmental pollution, and the fast development of China's economy, electric automobile, high-speed railway and wind-force
The industries such as electric propulsion technology and renewable energy power generation such as generating are flourished, in addition with mineral resources such as rare earths
Supply it is unstable, the New-type electric machine such as switched reluctance machines turns into the study hotspot of countries in the world.
However, compared with conventional motors, the intrinsic double-salient-pole design feature of switched reluctance machines, magnetic circuit and circuit it is non-thread
Property, switch property cause the factor such as stator winding current and magnetic linkage waveform irregular to cause torque pulsation larger, Traditional control side
Formula is torque pulsation inhibited ineffective, and directly Instantaneous torque control is improved and showed in the stability of a system torque pulsation inhibited
Go out some superiority.Therefore, research driving system for switched reluctance Torque Ripple Reduction has important theory significance and application
Value.
Traditional PI rotational speed regulation controller can not meet non-linear serious switched reluctance machines in full speed range
Speed governing requirement, therefore the operational efficiency of whole control system can be caused low.In commutation region, larger point occurs in phase current
Peak, larger current spike can cause motor operation efficiency to decline.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, the present invention provides a kind of Switched Reluctance Motor, including：
PI type Fuzzy speed regulator, torque control module, switching logic control module, deck power converter module；
Direct Instantaneous torque control device given rotating speed is connected as input with the input of PI type Fuzzy speed regulator, mould
Paste the output end of PI speed regulators and the input of torque control module connects；
The output end of torque control module is connected by the input of switching logic control module and deck power converter module；
The output end of deck power converter module is connected with switched reluctance machines.
Preferably, in addition to：First feedback comparison module, position and turn count module, sensor assembly；
The input that direct Instantaneous torque control device given rotating speed feeds back comparison module with first is connected, the first feedback ratio compared with
Input of the output end of module respectively with the output end and PI type Fuzzy speed regulator of position and turn count module is connected；
The input of position and turn count module is connected with torque control module and sensor assembly output end respectively；
Sensor assembly is connected with switched reluctance machines.
Preferably, in addition to：Second feedback comparison module, flux estimate algorithm module, torque estimating module；
The output end of PI type Fuzzy speed regulator is connected with the second feedback ratio compared with module input；Second feedback comparison module
Output end be connected respectively with the input and torque estimating module output end of torque control module；
The output end of deck power converter module respectively with switched reluctance machines, torque estimating module input, flux estimate algorithm
Module input is connected, and flux estimate algorithm module output end is connected with torque estimating module input.
Preferably, in addition to：Integration module；
The output end of first feedback comparison module is defeated with the output end of integration module and PI type Fuzzy speed regulator respectively
Enter end connection；
The input of integration module is connected with the output end of position and turn count module.
Preferably, PI type Fuzzy speed regulator be used for used on the basis of direct Instantaneous torque control fuzzy control and
The composite algorism of PI controls is controlled to rotating speed；
If the feedback rotating speed n of direct Instantaneous torque control lower switch reluctance motorRotating speed>Preset rotation speed n*, then it is defeated to reduce torque
Go out, make nRotating speed=n*；If nRotating speed=n*, torque keep it is constant；If nRotating speed<n*, then increase torque, make nRotating speed=n*。
Preferably, the discrete expression of PI type Fuzzy speed regulator is：
Wherein, TsIt is the sampling period；E (k) is input quantity；kp、kiIt is control parameter.
Preferably, torque control module is used to receive given torque T, and the turn-on angle for exchanging alpha region automatically adjusts,
Change commutation process by adjusting turn-on angle；
When switched reluctance machines A phases change to B phases, phase winding voltage U, electric current i, magnetic linkage ψ, maximum turn-on angle acquisition side are utilized
Formula is；
It is open-minded according to the current peak of real-time monitoring commutation region two-phase, on-line tuning on the basis of maximum turn-on angle
Angle so that the current peak of A phase B phases is equal；θ in formulamIt is that the torque of B phases reaches corresponding rotor-position during given torque for the first time
Angle, θaFor the aligned position of A phases, the A phases torque of this position is 0, TrefTo give torque, ω is angular speed；
When switched reluctance machines B phases change to C phases, maximum turn-on angle acquisition modes are；
θ in formulamIt is that the torque of C phases reaches corresponding rotor position angle, θ during given torque for the first timeBFor the alignment bit of B phases
Put, the B phases torque of this position is 0；
When switched reluctance machines C phases change to A phases, maximum turn-on angle acquisition modes are；
θ in formulamIt is that the torque of A phases reaches corresponding rotor position angle, θ during given torque for the first timeCFor the alignment bit of C phases
Put, the C phases torque of this position is 0.
As can be seen from the above technical solutions, the present invention has advantages below：
By PI controllers and fuzzy controller in the switched reluctance machines speed regulating method and system of direct Instantaneous torque control
Having combined this compound control method can solve the problems, such as that fuzzy control has the blind area of control, and due to integral term
Increase, the steady-state error of system can be effectively eliminated, keep the stable of whole governing system.
System can be effectively torque pulsation inhibited, while changes commutation process by automatically adjusting turn-on angle, so as to press down
Current spike processed, improve the purpose of motor operation efficiency.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in description will be made below simple
Ground introduction, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill
For personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is Switched Reluctance Motor overall schematic.
Embodiment
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, will use below specific
Embodiment and accompanying drawing, the technical scheme protected to the present invention are clearly and completely described, it is clear that implementation disclosed below
Example is only part of the embodiment of the present invention, and not all embodiment.Based on the embodiment in this patent, the common skill in this area
All other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the model of this patent protection
Enclose.
The present invention provides a kind of Switched Reluctance Motor, as shown in figure 1, including：PI type Fuzzy speed regulator 1,
Torque control module 2, switching logic control module 3, deck power converter module 4；Direct Instantaneous torque control device given rotating speed is made
It is connected for input with the input of PI type Fuzzy speed regulator 1, output end and the direct torque mould of PI type Fuzzy speed regulator 1
The input connection of block 2；The output end of torque control module 2 passes through switching logic control module 3 and deck power converter module 4
Input connects；The output end of deck power converter module 4 is connected with switched reluctance machines 5.
In the present embodiment, system also includes：First feedback comparison module 13, position and turn count module 6, sensor
Module 7；The input that direct Instantaneous torque control device given rotating speed feeds back comparison module 13 with first is connected, the first feedback ratio compared with
The output end of module 13 connects with the input of the output end and PI type Fuzzy speed regulator 1 of position and turn count module 6 respectively
Connect；The input of position and turn count module 6 is connected with torque control module 2 and the output end of sensor assembly 7 respectively；Sensing
Device module 7 is connected with switched reluctance machines 5.
System also includes：Integration module 8；The output end output with integration module 8 respectively of first feedback comparison module 13
End connects with the input of PI type Fuzzy speed regulator 1；The input of integration module 8 and position and turn count module 6 it is defeated
Go out end connection.Integration module 8 can effectively eliminate the steady-state error of system, keep the stable of whole governing system.
In the present embodiment, system also includes：Second feedback comparison module 14, flux estimate algorithm module 12, torque estimating module
11；
The output end of PI type Fuzzy speed regulator 1 is connected with the second feedback input of comparison module 14；Second feedback ratio compared with
The output end of module 14 is connected with the input and the output end of torque estimating module 11 of torque control module 2 respectively；Power conversion
The output end of device module 4 respectively with switched reluctance machines 5, the input of torque estimating module 11, the input of flux estimate algorithm module 12
Connection, the output end of flux estimate algorithm module 12 are connected with the input of torque estimating module 11.
The present invention is the switched reluctance machines speed governing implementation process of direct Instantaneous torque control, is switched reluctance machines speed governing
The input of controller receives input given rotating speed n*, and given rotating speed n* is compared with the actual speed n fed back for input,
The torque reference for being used as torque controlling unit by being exported caused by PI type Fuzzy speed regulator module gives.System passes through split
The measurement of voltage and current when reluctance motor is run is closed, reality is estimated after flux estimate algorithm module and torque estimating module
Torque, so as to realize the direct control to torque, reach reduction torque pulsation, improve the purpose of motor operation efficiency.
PI speed regulators under direct Instantaneous torque control are carried out using two-dimensional fuzzy controller to outer shroud speed ring
Control, due to being the control to speed, so deviation and the change of error amount conduct of selection SRM given speeds and actual speed
Two inputs of controller；Input of the output of fuzzy controller as inner ring torque ring, is controlled to torque, so fuzzy
The output of controller should choose expectation torque.
In the present embodiment, voltage and current measures when system is run to switched reluctance machines, passes through flux estimate algorithm mould
Block, torque estimating module, instantaneous torque is estimated, and then directly torque is controlled.
Traditional PI rotational speed governors can not meet tune of the non-linear serious switched reluctance machines in full speed range
Speed requires, therefore using PI controllers rotating speed is adjusted by the way of fuzzy control is combined to obtain torque Tref。
PI type Fuzzy speed regulator is used to use fuzzy control and PI to control on the basis of direct Instantaneous torque control
Composite algorism rotating speed is controlled；
If the feedback rotating speed n of direct Instantaneous torque control lower switch reluctance motorRotating speed>Preset rotation speed n*, then it is defeated to reduce torque
Go out, make nRotating speed=n*；If nRotating speed=n*, torque keep it is constant；If nRotating speed<n*, then increase torque, make nRotating speed=n*。
The discrete expression of PI type Fuzzy speed regulator is：
Wherein, TsIt is the sampling period；E (k) is input quantity；kp、kiIt is control parameter.
Specifically, by velocity error e, error rate ec reproduces the process of fuzzy reasoning：
(1) precise volume is calculated by blurring formula and fuzzy value is obtained after Fuzzy processing：
E=int (e × ke+0.5)
EC=int (ec × kec+0.5)
(2) derived by (1) result of calculation and membership function figure under E and EC the two input quantities for other language
The degree of membership of variable.
(3) language rule to work is drawn by fuzzy control rule table.
(4) degree of membership of the minimum value as output variable in input variable membership function is taken.
(5) obtain it is expected the fuzzy value of torque according to the computational methods combination formula of gravity model appoach：
K in above formulae, kecIt is the scale factor changed in precise volume and fuzzy domain between fuzzy quantity, uiIt is
One linguistic variable of fuzzy output, μU(ui) it is uiCorresponding degree of membership.
PI control modes are adjusted jointly to control system, and ratio control and integration control are combined while made
With, make system enter stable state after the optimum efficiency without steady-state error.
The discrete expression of pi regulator is：
Wherein, TsIt is the sampling period；E (k) is input quantity；kp、kiIt is control parameter.
Adjust to obtain T in PI type Fuzzy rotational speed governorrefAfterwards, the turn-on angle for exchanging alpha region on this basis is carried out certainly
Dynamic regulation, changes commutation process by adjusting turn-on angle, so as to reach suppression current spike, improves the mesh of motor operation efficiency
's.
Wherein, torque control module is used to receive given torque T, and the turn-on angle for exchanging alpha region automatically adjusts, and leads to
Turn-on angle is overregulated to change commutation process；
When switched reluctance machines A phases change to B phases, phase winding voltage U, electric current i, magnetic linkage ψ, maximum turn-on angle acquisition side are utilized
Formula is；
It is open-minded according to the current peak of real-time monitoring commutation region two-phase, on-line tuning on the basis of maximum turn-on angle
Angle so that the current peak of A phase B phases is equal；θ in formulamIt is that the torque of B phases reaches corresponding rotor-position during given torque for the first time
Angle, θaFor the aligned position of A phases, the A phases torque of this position is 0, TrefTo give torque, ω is angular speed；
When switched reluctance machines B phases change to C phases, maximum turn-on angle acquisition modes are；
When switched reluctance machines C phases change to A phases, maximum turn-on angle acquisition modes are；
Specifically, adjust to obtain T in PI type Fuzzy rotational speed governorrefAfterwards, the turn-on angle of alpha region is exchanged on this basis
Automatically adjust, change commutation process by adjusting turn-on angle, so as to reach suppression current spike, improve motor operation effect
The purpose of rate.Maximum turn-on angle is calculated, on this basis, according to the current peak of real-time monitoring commutation region two-phase, online
Adjust turn-on angle so that the current peak of two-phase is equal.Maximum turn-on angle is calculated as follows：
The terminal voltage of phase winding can be expressed as
Ignore the pressure drop on winding resistance, above-mentioned voltage equation can be written as
Both sides multiply d θ simultaneously, and solve d θ and can obtain
So maximum turn-on angle can be written as
θ in formulamIt is that the torque of B phases reaches corresponding rotor position angle, θ during given torque for the first timeaFor the aligned position of A phases,
The A phases torque of this position is 0, TrefTo give torque, ω is angular speed.
The present invention is directed to the nonlinear features of SRM, and fuzzy control is added on the basis of traditional pi regulator and forms mould
Paste PI speed regulator modules are that speed ring uses Fuzzy~+ PI algorithm to given speed and the mistake of actual feedback speed
Difference is adjusted, so as to draw the expectation torque of motor rotation, that is, the ginseng exported as torque ring using fuzzy PI hybrid control
Examine input.
The input of direct Instantaneous torque control device receives given rotating speed, the given rotating speed of input and the actual speed of feedback
State error is asked for, inputs PI type Fuzzy speed regulator, by fuzzy control and PI regulation complex control algorithm processing, due to product
The increase of subitem, the steady-state error of system can be effectively eliminated, keep the stable operation of whole governing system.
The expectation torque T that PI type Fuzzy speed regulator module will giverefState error is asked for the actual torque T of feedback,
Foundation using comparative result as controlling switch device working condition.
By given torque reference compared with the instantaneous torque estimated, difference is as the defeated of torque controlling unit
Enter, while different step modes is selected according to the logic state of each phase winding, and according to rotating speed and loading condition to turn-on angle
θonWith shut-off angle θoffRegulation is controlled, and then sends drive signal, the operation of controlled motor.
The torque that torque controlling unit is more than to torque feedback is directly controlled, while electric current is controlled,
In running, bigger spike occurs in phase current, during this problem mainly appears on commutation, larger current peak
Motor operation efficiency can be caused to decline, and damage power inverter sometimes.The present invention adjusts in direct instantaneous torque PI type Fuzzy
Automatically adjusting for turn-on angle is added on the basis of section control, commutation process is changed by constantly regulate turn-on angle, so as to suppress
Current spike, improve the purpose of motor operation efficiency.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (4)
- A kind of 1. Switched Reluctance Motor, it is characterised in that including：PI type Fuzzy speed regulator, torque control module, Switching logic control module, deck power converter module；Direct Instantaneous torque control device given rotating speed is connected as input with the input of PI type Fuzzy speed regulator, PI type Fuzzy The output end of speed regulator and the input of torque control module connect；The output end of torque control module is connected by the input of switching logic control module and deck power converter module；Power The output end of converter module is connected with switched reluctance machines.
- 2. Switched Reluctance Motor according to claim 1, it is characterised in thatAlso include：First feedback comparison module, position and turn count module, sensor assembly；Direct Instantaneous torque control device given rotating speed is connected with the input of the first feedback comparison module, the first feedback comparison module Input of the output end respectively with the output end and PI type Fuzzy speed regulator of position and turn count module be connected；The input of position and turn count module is connected with torque control module and sensor assembly output end respectively；Sensor assembly is connected with switched reluctance machines.
- 3. Switched Reluctance Motor according to claim 2, it is characterised in thatAlso include：Second feedback comparison module, flux estimate algorithm module, torque estimating module；The output end of PI type Fuzzy speed regulator is connected with the second feedback ratio compared with module input；Second feeds back the defeated of comparison module Go out end to be connected with the input and torque estimating module output end of torque control module respectively；The output end of deck power converter module respectively with switched reluctance machines, torque estimating module input, flux estimate algorithm module Input is connected, and flux estimate algorithm module output end is connected with torque estimating module input.
- 4. Switched Reluctance Motor according to claim 2, it is characterised in thatAlso include：Integration module；First feedback comparison module output end respectively with the output end of integration module and the input of PI type Fuzzy speed regulator Connection；The input of integration module is connected with the output end of position and turn count module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692854.XU CN206962744U (en) | 2017-06-14 | 2017-06-14 | A kind of Switched Reluctance Motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692854.XU CN206962744U (en) | 2017-06-14 | 2017-06-14 | A kind of Switched Reluctance Motor |
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| CN206962744U true CN206962744U (en) | 2018-02-02 |
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| CN201720692854.XU Active CN206962744U (en) | 2017-06-14 | 2017-06-14 | A kind of Switched Reluctance Motor |
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Effective date of registration: 20210820 Address after: 250101 Building 5, 2966 Chunhui Road, high tech Zone, Jinan City, Shandong Province Patentee after: SHANDONG HUAAN DETECTION TECHNOLOGY Co.,Ltd. Address before: 250353 University Road, Changqing District, Ji'nan, Shandong Province, No. 3501 Patentee before: Qilu University of Technology |
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Effective date of registration: 20211009 Address after: 315202 Room 201, building B, Tsinghua alumni entrepreneurship and innovation base, No. 181, Changluo Road, Luotuo street, Zhenhai District, Ningbo City, Zhejiang Province Patentee after: Huayuan (Zhejiang) Power Technology Co.,Ltd. Address before: 250101 Building 5, 2966 Chunhui Road, high tech Zone, Jinan City, Shandong Province Patentee before: SHANDONG HUAAN DETECTION TECHNOLOGY Co.,Ltd. |
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