CN105262380A - Stator linkage amplitude given method during weak magnetic operation of PMSM - Google Patents
Stator linkage amplitude given method during weak magnetic operation of PMSM Download PDFInfo
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- CN105262380A CN105262380A CN201510644344.0A CN201510644344A CN105262380A CN 105262380 A CN105262380 A CN 105262380A CN 201510644344 A CN201510644344 A CN 201510644344A CN 105262380 A CN105262380 A CN 105262380A
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- magnetic linkage
- rotating speed
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- pmsm
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Abstract
The invention discloses a stator linkage amplitude given method during weak magnetic operation of a PMSM (Permanent Magnet Synchronous Motor). The method comprises steps that, a rated rotating speed of the PMSM is contrasted with an actual rotating speed, if the actual rotating speed is higher than the rated rotating speed, mutual inductance linkage is calculated according to parameters provided by production manufacturers or a formula described in the specification; the difference of the given rotating speed and the actual rotating speed is inputted to two different PI adjusters, d axis and q axis currents are respectively outputted, self-inductance linkage of a d axis and a q axis in a d-q coordinate system are calculated according to the d axis and q axis currents; a stator linkage amplitude given value is calculated according to the mutual inductance linkage and the self-inductance linkage. Through the weak magnetic control method, a motor speed regulation scope can be effectively widened, start time of the PMSM can be reduced, and work efficiency of the PMSM can be improved.
Description
Technical field
The invention belongs to Motor Control Field, particularly relate to a kind of given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field.
Background technology
Permagnetic synchronous motor requires to be widely used in higher speed-adjusting driving system at track, traffic, electric traction, electric automobile etc. with its high efficiency, high power density and high torque (HT) ratio of inertias characteristic.
In order to realize permanent magnet synchronous generator actuated by weak field, traditional method roughly can be divided into both direction, i.e. feed forward type adjusted open loop and reaction type closed-loop adjustment.The former is the Mathematical Modeling based on motor body itself, when running on the operation of invariable power district, judges and regulate weak magnetoelectricity stream set-point for the analysis between weak magnetic area, relies on motor mathematical model formula to carry out derivation and calculates.The defect of feed forward type adjusted open loop method is motor model parameter dependence comparatively strong, and Algorithm robustness is general.Reaction type closed-loop adjustment method comprises look-up table, gradient descent method, and maximum torque control method etc., defect is that algorithm is very complicated, is difficult to practical application.
Based on As-Is, the present inventor furthers investigate a kind of given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field, and this case produces thus.
Summary of the invention
Object of the present invention, be a kind of given method of stator magnetic linkage amplitude when proposing permanent magnet synchronous generator actuated by weak field, it can effectively widen electric machine speed regulation scope, reduces the starting time of permagnetic synchronous motor, the operating efficiency of lifting motor.
In order to reach above-mentioned purpose, solution of the present invention is:
The given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field, comprises the steps:
(1) the rated speed ω of permagnetic synchronous motor is compared
nwith actual speed ω, if ω > is ω
nenter step (2), otherwise termination routine;
(2) mutual inductance magnetic linkage is set;
(3) the self-inductance magnetic linkage L of d axle under d-q coordinate system, q axle is set
di
d, L
qi
q;
(4) d axle component ψ is calculated
d=L
di
d+ ψ
f, q axle component ψ
q=L
qi
q, thus according to
obtain stator magnetic linkage amplitude given
In above-mentioned steps (2), mutual inductance magnetic linkage ψ
fbe as the criterion with the parameter that the manufacturer of permagnetic synchronous motor provides.
In above-mentioned steps (2), mutual inductance magnetic linkage ψ
faccording to
calculate, wherein, U
nthe specified phase voltage peak value of permagnetic synchronous motor, U
dcrated voltage, ω
nrated angular velocity, f
nit is rated frequency.
In above-mentioned steps (3), d shaft current i
destablishing method be: by given rotating speed ω
refinput pi regulator with the deviation of actual speed ω, will export as d shaft current i
d.
In above-mentioned steps (3), q shaft current i
qestablishing method be: by given rotating speed ω
refinput pi regulator with the deviation of actual speed ω, will export as q shaft current i
q.
After adopting such scheme, the present invention is simple and effective, and needn't change internal structure and the control system hardware of motor in implementation procedure, control procedure more easily realizes, effectively widen electric machine speed regulation scope, reduce motor and produce and control cost, lifting motor operating efficiency.
Accompanying drawing illustrates:
Fig. 1 is permanent-magnetic synchronous motor stator magnetic linkage analysis principle figure;
Fig. 2 is the d axle component i of permagnetic synchronous motor
dgiven method figure;
Fig. 3 is the q axle component i of permagnetic synchronous motor
qgiven method figure;
Fig. 4 is flow chart of the present invention.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is described in detail.
Composition graphs 1, analyzes stator magnetic linkage, and the magnetic linkage that stator magnetic linkage is produced by stator winding self-induction and rotor permanent magnet encourage mutual inductance magnetic linkage two parts of generation to form on stator winding, under d-q coordinate system, and stator magnetic linkage stator magnetic linkage ψ
scomponent ψ
d, ψ
qcomputing formula is respectively: ψ
d=L
di
d+ ψ
f, ψ
q=L
qi
q, in formula, i
d, i
qbe respectively d axle, q shaft current, L
d, L
qbe respectively permagnetic synchronous motor d axle, q axle inductance, ψ
ffor mutual inductance magnetic linkage.Wherein, when d shaft current is negative value, effectively can weaken the amplitude of stator magnetic linkage; And mutual inductance magnetic linkage is determined by permagnetic synchronous motor parameter; Therefore, can by setting suitable current value i
d, i
q, thus calculate suitable stator magnetic linkage amplitude set-point
the weak magnetic field operation realizing permagnetic synchronous motor controls.
Based on above analysis, the invention provides a kind of given method of stator magnetic linkage amplitude of permanent magnet synchronous generator actuated by weak field, coordinate shown in Fig. 4, comprise the steps:
(1) rated speed setting permagnetic synchronous motor is ω
n, measure the actual speed ω of permagnetic synchronous motor, and with rated speed ω
nrelatively, due to only when actual speed is higher than rated speed, permagnetic synchronous motor just can operate in invariable power district, therefore first needs to confirm ω > ω
n, otherwise termination routine;
(2) mutual inductance magnetic linkage ψ is set
f: if the manufacturer of permagnetic synchronous motor provides permagnetic synchronous motor parameter, be then as the criterion with the parameter provided; If do not provide parameter, then basis
calculate mutual inductance magnetic linkage, wherein, U
nthe specified phase voltage peak value of permagnetic synchronous motor, U
dcrated voltage, ω
nrated angular velocity, f
nit is rated frequency.
(3) self-inductance magnetic linkage is set: under d-q coordinate system, the self-inductance magnetic linkage of d axle, q axle is L respectively
di
d, L
qi
q, wherein, L
d, L
qbeing respectively permagnetic synchronous motor d axle, q axle inductance, is fixed value, therefore needs to set i
d, i
q, specifically, by given rotating speed ω
refpi regulator is inputted, using output as the d shaft current i being used for excitation con-trol with the deviation of actual speed ω
d, by given rotating speed ω
refanother pi regulator is inputted, using output as the q shaft current i being used for direct torque with the deviation of actual speed ω
q, as shown in Figure 2 and Figure 3;
(4) the mutual inductance magnetic linkage calculated according to step (2), (3) and self-inductance magnetic linkage, calculate d axle component ψ
d=L
di
d+ ψ
f, q axle component ψ
q=L
qi
q, thus according to
obtain stator flux linkage set
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (5)
1. the given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field, is characterized in that comprising the steps:
(1) actual speed ω and the rated speed ω of permagnetic synchronous motor is compared
ntime, if ω > is ω
n, enter step (2), otherwise termination routine;
(2) mutual inductance magnetic linkage ψ is set
f;
(3) the self-inductance magnetic linkage L of d axle under d-q coordinate system, q axle is set
di
d, L
qi
q;
(4) d axle component ψ is calculated
d=L
di
d+ ψ
f, q axle component ψ
q=L
qi
q, thus according to
Obtain stator magnetic linkage amplitude given
2. the given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field as claimed in claim 1, is characterized in that: in described step (2), mutual inductance magnetic linkage ψ
fbe as the criterion with the parameter that the manufacturer of permagnetic synchronous motor provides.
3. the given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field as claimed in claim 1, is characterized in that: in described step (2), mutual inductance magnetic linkage ψ
faccording to
calculate, wherein, U
nthe specified phase voltage peak value of permagnetic synchronous motor, U
dcrated voltage, ω
nrated angular velocity, f
nit is rated frequency.
4. the given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field as claimed in claim 1, is characterized in that: in described step (3), d shaft current i
destablishing method be: by given rotating speed ω
refwith the deviation of actual speed ω through pi regulator, will export as the electric current d axle component i being used for excitation con-trol
d.
5. the given method of stator magnetic linkage amplitude during permanent magnet synchronous generator actuated by weak field as claimed in claim 1, is characterized in that: in described step (3), d shaft current i
destablishing method be: by given rotating speed ω
refpass through another pi regulator with the deviation of actual speed ω, will export as the electric current q axle component i being used for direct torque
q.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510644344.0A CN105262380A (en) | 2015-10-08 | 2015-10-08 | Stator linkage amplitude given method during weak magnetic operation of PMSM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510644344.0A CN105262380A (en) | 2015-10-08 | 2015-10-08 | Stator linkage amplitude given method during weak magnetic operation of PMSM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105262380A true CN105262380A (en) | 2016-01-20 |
Family
ID=55101926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510644344.0A Pending CN105262380A (en) | 2015-10-08 | 2015-10-08 | Stator linkage amplitude given method during weak magnetic operation of PMSM |
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Citations (5)
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|---|---|---|---|---|
| CN101013876A (en) * | 2007-02-01 | 2007-08-08 | 上海交通大学 | Voltage decoupling variable-frequency control vector controlling method with parameter self-regulating function |
| WO2009063786A1 (en) * | 2007-11-15 | 2009-05-22 | Kabushiki Kaisha Yaskawa Denki | Motor control device and control method thereof |
| CN101442289A (en) * | 2008-12-17 | 2009-05-27 | 南京航空航天大学 | Control method for direct torsion of staircase waveform backemf brushless dc motor |
| CN101931362A (en) * | 2010-05-19 | 2010-12-29 | 西安理工大学 | Direct torque control device and method for permanent magnet synchronous motor |
| CN103269191A (en) * | 2013-05-22 | 2013-08-28 | 浙江大学 | Method for controlling direct torsion/ flux linkage of permanent magnet synchronous motor |
-
2015
- 2015-10-08 CN CN201510644344.0A patent/CN105262380A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013876A (en) * | 2007-02-01 | 2007-08-08 | 上海交通大学 | Voltage decoupling variable-frequency control vector controlling method with parameter self-regulating function |
| WO2009063786A1 (en) * | 2007-11-15 | 2009-05-22 | Kabushiki Kaisha Yaskawa Denki | Motor control device and control method thereof |
| CN101442289A (en) * | 2008-12-17 | 2009-05-27 | 南京航空航天大学 | Control method for direct torsion of staircase waveform backemf brushless dc motor |
| CN101931362A (en) * | 2010-05-19 | 2010-12-29 | 西安理工大学 | Direct torque control device and method for permanent magnet synchronous motor |
| CN103269191A (en) * | 2013-05-22 | 2013-08-28 | 浙江大学 | Method for controlling direct torsion/ flux linkage of permanent magnet synchronous motor |
Non-Patent Citations (5)
| Title |
|---|
| 刘军等: "《一种永磁同步电机参数测量方法》", 《电力电子技术》 * |
| 刘向东: "《DSP技术原理与应用》", 31 May 2007, 北京：中国电力出版社 * |
| 唐校等: "《非恒定磁链幅值给定的永磁同步电机直接转矩控制》", 《电力自动化设备》 * |
| 邓仁燕: "《基于前馈补偿的永磁同步电机电流环解耦控制》", 《电力电子技术》 * |
| 郎宝华等: "《基于最大转矩电流比动态磁链给定的直接转矩控制》", 《电气传动》 * |
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Application publication date: 20160120 |
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