CN106169896A - The controller of magneto alternator and rotor flux on-line amending method and apparatus - Google Patents

Abstract

The controller of the magneto alternator that the present invention provides and rotor flux on-line amending method and apparatus, according to torque current transfer algorithm during maximum torque per ampere control, be calculated based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；Then the stator three-phase alternating current according to Real-time Collection is calculated amplitude u of current stator phase voltage_s；The stator three-phase voltage obtained by Real-time Collection is calculated meansigma methods u of three-phase voltage_av；If u_sWith u_avBetween difference more than predetermined threshold value M, then obtain revised rotor flux ψ_f(1)=K ψ_f；Re-execute said process, until u_sWith u_avBetween difference less than M, finally achieve the rotor flux on-line amending for magneto alternator；Avoid complicated and loaded down with trivial details parameter identification, overcome the generator parameter fluctuation impact on maximum torque per ampere control, it is achieved torque current and the optimization of exciting current set-point, be effectively improved the stability that wind generator system runs.

Description

The controller of magneto alternator and rotor flux on-line amending method and apparatus

Technical field

The present invention relates to magneto alternator technical field, particularly to a kind of magneto alternator controller and Rotor flux on-line amending method and apparatus.

Background technology

In variable-speed constant-frequency wind power generation technology, direct-driving type wind power generation system uses blower fan directly to drive multipole low speed forever Magnetic-synchro electromotor (PMSM) generates electricity, and the electric energy after then being changed by full power convertor is connected to the grid.Relative to double-fed Asynchronous machine (DFIG) wind power system, direct-driving type wind power generation system is owing to eliminating between gear-box, and electromotor and electrical network There is no a direct-coupling, thus have that energy loss is few, maintenance cost is low, anti-power network fluctuation ability strong, high reliability, from And become one of the most potential mainstream technology in variable-speed constant-frequency wind power generation technology.

Megawatt permanent magnetism synchronous directly drive system belongs to the one in direct-driving type wind power generation system, and the control of motor is needed by it Use maximum torque per ampere control and weak magnetic control.This scheme controls nargin model to control generator output voltage at current transformer For target in enclosing, below turnover speed, obtain torque current by maximum torque per ampere control mode and exciting current gives Value, thus control the vector magnitude of stator current；More than turnover speed, in order to suppress too high generator unit stator voltage, logical Overregulate stator current vector angle value and carry out weak magnetic stable generator stator voltage, thus according to different the turning of actual generator Speed, it is achieved torque capacity current ratio vector controlled and the good switching of weak magnetic control, it is ensured that maximum generation power controls.

But, there is a significant drawbacks in above-mentioned tradition torque capacity current ratio vector controlled, i.e. needs to rely on electromotor Parameter.Owing to the rotor operating temperature of magneto alternator self can raise in running, and its physical parameter If stator winding resistance value and rotor permanent magnet magnetic linkage amplitude are all the monotonic functions of temperature；Electromotor longtime running is special in wind field Environment in, individual operating condition is different, and the magnetic field environment of each electromotor also can change；Factors above all can make generating The parameter of machine there will be dynamic fluctuation.The fluctuation of generator parameter, can cause according to turning that generator parameter Theoretical Calculation obtains Square electric current and exciting current set-point are not optimal values, controlling electromagnetic torque precise decreasing, and the tracking that master control issues torque is inclined Difference is excessive, thus there will be generator torque pulsation, generated output reduction, generated energy loss, can affect the steady of unit time serious Determine reliability service.

Summary of the invention

The present invention provides controller and the rotor flux on-line amending method and apparatus of a kind of magneto alternator, to solve The problem certainly needing in prior art to rely on the parameter of electromotor.

For realizing described purpose, the technical scheme that the application provides is as follows:

A kind of rotor flux on-line amending method of magneto alternator, including:

According to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on stator current orientation 'sCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；

According to based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α, By the current transformer of controlled current flow, the output electric current of magneto alternator is controlled；

The stator three-phase alternating current I of magneto alternator described in Real-time Collection_u、I_v、I_w；

According to based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、I_wBe converted to base In rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q；

According to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q, it is calculated Amplitude u of current stator phase voltage_s；

The stator three-phase voltage U of magneto alternator described in Real-time Collection_u、U_v、U_w；

According to stator three-phase voltage U_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_av；

Judge amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference whether more than presetting Threshold value M；

If amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference more than predetermined threshold value M, Then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, obtains revised turn Sub-magnetic linkage ψ_f(1)=K ψ_f；

According to revised rotor flux ψ_f(1), re-execute above-mentioned steps, until amplitude u of current stator phase voltage_sWith Meansigma methods u of three-phase voltage_avBetween difference less than predetermined threshold value M.

Preferably, described according to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on fixed Electron current orientationCoordinate systemThe stator current set-point i of axle_s ^*Include with the step of power-factor angle α:

According to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on rotor unloaded Electro dynamic Gesture e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*；

According to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemDetermining of axle Electron current set-point i_s ^*, and power-factor angle α.

Preferably, described according to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on turning Sub-no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*The formula of institute's foundation is:

${i_d}^{*}=\frac{(-{\mathrm{\ψ}}_f+\sqrt{{\mathrm{\ψ}}_f^2+4{(L_q-L_d)}^2{\left({i_q}^{*}\right)}^2})}{2(L_q-L_d)};$

Described according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemAxle Stator current set-point i_s ^*The formula of institute's foundation is:

${i_s}^{*}=\sqrt{{\left({i_d}^{*}\right)}^2+{\left({i_q}^{*}\right)}^2};$

Described according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemAxle The formula of power-factor angle α institute foundation be:

$\mathrm{\α}=\mathrm{\δ}-\mathrm{\φ}=\arctan \frac{u_d}{u_q}-\arctan \frac{{i_d}^{*}}{{i_q}^{*}}=\arctan \frac{-R_s{i}_d+{\mathrm{\ω}}_s{L}_q{i}_q}{-R_s{i}_q-{\mathrm{\ω}}_s{L}_d{i}_d+{\mathrm{\ω}}_s{\mathrm{\ψ}}_f}-\arctan \frac{{i_d}^{*}}{{i_q}^{*}};$

Wherein, δ is power angle, and φ is internal power factor angle, u_dAnd u_qIt is respectively permagnetic synchronous motor base when steady-state operation In rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator voltage vector value of q axle component, L_qFor quadrature axis inductance, L_dFor D-axis inductance, R_sFor stator phase resistance, ω_sFor synchronizing angular rate.

Preferably, described basis is based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、 I_wBe converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_qStep include:

According to based on rotor no-load electromotive force e₀The angle of orientation, is converted, by stator three-phase by Clark conversion and Park Alternating current I_u、I_v、I_wBe converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、 i_q。

Preferably, described basis is based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、 i_q, it is calculated amplitude u of current stator phase voltage_sThe formula of institute's foundation is:

$u_s=\sqrt{{u_d}^2+{u_q}^2}=\sqrt{{\left({\mathrm{\ω}}_s{L}_q{i}_q\right)}^2+{(-{\mathrm{\ω}}_s{L}_d{i}_d+{\mathrm{\ω}}_s{\mathrm{\ψ}}_f)}^2};$

Wherein, u_dAnd u_qIt is respectively permagnetic synchronous motor when steady-state operation based on rotor no-load electromotive force e₀The dq of orientation Coordinate system d axle and the stator voltage vector value of q axle component, L_qFor quadrature axis inductance, L_dFor d-axis inductance, ω_sFor synchronizing electric angle speed Degree.

Preferably, described according to stator three-phase voltage U_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_avInstitute's foundation Formula is:

$u_{av}=\frac{U_u+U_v+U_w}{3}.$

Preferably, if amplitude u of described current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference be more than Predetermined threshold value M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, obtains Revised rotor flux ψ_f(1)=K ψ_fStep include:

If u_s-u_av＞ M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by correction COEFFICIENT K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；

If u_av-u_s＞ M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by correction COEFFICIENT K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f。

A kind of rotor flux on-line amending device of magneto alternator, including:

First computing unit, for according to torque-current transfer algorithm during maximum torque per ampere control, is calculated Based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；

Control unit, for according to based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With Power-factor angle α, is controlled the output electric current of magneto alternator by the current transformer of controlled current flow；

First collecting unit, for the stator three-phase alternating current I of magneto alternator described in Real-time Collection_u、I_v、I_w；

Converting unit, for according to based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、 I_v、I_wBe converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q；

Second computing unit, for according to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the electric current of q axle Component i_d、i_q, it is calculated amplitude u of current stator phase voltage_s；

Second collecting unit, for the stator three-phase voltage U of magneto alternator described in Real-time Collection_u、U_v、U_w；

3rd computing unit, for according to stator three-phase voltage U_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_av；

Judging unit, for judging amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference Whether more than predetermined threshold value M；

Amending unit, if for amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference big In predetermined threshold value M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, To revised rotor flux ψ_f(1)=K ψ_f；

Output unit, for by revised rotor flux ψ_f(1)Output, to described first computing unit, re-executes State step, until described judging unit judges amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference Value is less than predetermined threshold value M.

Preferably, described first computing unit includes:

First computing module, for according to torque-current transfer algorithm during maximum torque per ampere control, is calculated Based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*；

Second computing module, for according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*, and power-factor angle α.

Preferably, described amending unit includes:

First correcting module, if for u_s-u_av＞ M, then will currently carry out turning of described torque-current transfer algorithm calculating Sub-magnetic linkage ψ_fIt is multiplied by adjusted coefficient K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；

Second correcting module, if for u_av-u_s＞ M, then will currently carry out turning of described torque-current transfer algorithm calculating Sub-magnetic linkage ψ_fIt is multiplied by adjusted coefficient K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f。

The controller of a kind of magneto alternator, including the rotor flux of any of the above-described described magneto alternator On-line amending device.

The rotor flux on-line amending method of the described magneto alternator that the present invention provides, first according to torque capacity Torque-current transfer algorithm when current ratio controls, is calculated based on stator current orientationCoordinate systemDetermining of axle Electron current set-point i_s ^*With power-factor angle α；Then same to permanent magnetism by the current transformer of controlled current flow according to above-mentioned result of calculation The output electric current of step electromotor is controlled；Further according to based on rotor no-load electromotive force e₀The angle of orientation, by Real-time Collection The stator three-phase alternating current I of described magneto alternator_u、I_v、I_wBe converted to based on rotor no-load electromotive force e₀The dq of orientation The current component i of coordinate system d axle and q axle_d、i_q, then it is calculated amplitude u of current stator phase voltage_s；Obtained by Real-time Collection The stator three-phase voltage U of the described magneto alternator arrived_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_av；If it is current Amplitude u of stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference more than predetermined threshold value M, then will currently carry out institute State the rotor flux ψ that torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, obtains revised rotor flux ψ_f(1)=K ψ_f；According to revised rotor flux ψ_f(1), re-execute above-mentioned steps, until amplitude u of current stator phase voltage_sWith three-phase Meansigma methods u of voltage_avBetween difference less than predetermined threshold value M, finally achieve the rotor flux for magneto alternator On-line amending；Avoid complicated and loaded down with trivial details parameter identification, calculate simple, it is easy to software realizes；Overcome generator parameter ripple The dynamic impact on maximum torque per ampere control, it is achieved torque current and the optimization of exciting current set-point, improves electromagnetism and turns The control accuracy of square, it is to avoid generator torque pulsation and generated energy lose, and are effectively improved the stability that wind generator system runs.

Accompanying drawing explanation

For the technical scheme being illustrated more clearly that in the embodiment of the present invention or prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other accompanying drawing is obtained according to these accompanying drawings.

Fig. 1 is the flow chart of the rotor flux on-line amending method of the magneto alternator that the embodiment of the present invention provides；

Fig. 2 is another of the rotor flux on-line amending method of the magneto alternator that another embodiment of the present invention provides Flow chart；

Fig. 3 is another of the rotor flux on-line amending method of the magneto alternator that another embodiment of the present invention provides Flow chart；

Fig. 4 is the three dimensional vector diagram figure of the magneto alternator that another embodiment of the present invention provides；

Fig. 5 is the structure of the rotor flux on-line amending device of the magneto alternator that another embodiment of the present invention provides Schematic diagram；

Fig. 6 is another of the rotor flux on-line amending device of the magneto alternator that another embodiment of the present invention provides Structural representation；

Fig. 7 is another of the rotor flux on-line amending device of the magneto alternator that another embodiment of the present invention provides Structural representation.

Detailed description of the invention

Understandable, below in conjunction with the accompanying drawings to the present invention for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from Detailed description of the invention be described in detail.

The present invention provides a kind of rotor flux on-line amending method of magneto alternator, to solve to need in prior art The problem of the parameter of electromotor to be relied on.

Concrete, the rotor flux on-line amending method of described magneto alternator, as it is shown in figure 1, include:

S101, according to torque-current transfer algorithm during maximum torque per ampere control, be calculated based on stator current OrientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；

S102, basis are based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*And power factor Angle α, is controlled the output electric current of magneto alternator by the current transformer of controlled current flow；

The stator three-phase alternating current I of magneto alternator described in S103, Real-time Collection_u、I_v、I_w；

S104, basis are based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、I_wConversion For based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q；

S105, basis are based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q, meter Calculate amplitude u obtaining current stator phase voltage_s；

The stator three-phase voltage U of magneto alternator described in S106, Real-time Collection_u、U_v、U_w；

S107, according to stator three-phase voltage U_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_av；

S108, judge amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference whether be more than Predetermined threshold value M；

If amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference more than predetermined threshold value M, Then perform step S109, will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, Obtain revised rotor flux ψ_f(1)=K ψ_f；

According to revised rotor flux ψ_f(1), re-execute step S101 to S109, until current stator phase voltage Amplitude u_sMeansigma methods u with three-phase voltage_avBetween difference less than predetermined threshold value M.

Wherein, step S101 to S107 belongs to calculating and detection-phase, mainly by using torque capacity current ratio vector Control to be calculated stator current set-point and power-factor angle, carry out permanent magnetism by the current transformer of controlled current flow on this basis The control of synchronous generator output electric current；Real-time Collection magneto alternator stator three-phase alternating current, through coordinate transform After dq axle component, calculate the amplitude of current stator phase voltage；And the stator three-phase of magneto alternator described in Real-time Collection Voltage, is calculated the meansigma methods of three-phase voltage.

Step S108 and S109 are belonging respectively to judge and the correction stage, by the value of calculation of multilevel iudge stator phase voltage (amplitude u of current stator phase voltage_s) and Real-time Collection value (meansigma methods u of three-phase voltage_avWhether the difference between) is more than pre- If threshold value M, when the described difference judged between the value of calculation of stator phase voltage and Real-time Collection value is more than predetermined threshold value M, will Rotor magnetic linkage is multiplied by correction factor, then according to revised rotor flux, by during maximum torque per ampere control Torque-current transfer algorithm, calculates in real time and updates stator current set-point and power-factor angle, on this basis according to described The output electric current of magneto alternator recalculate amplitude u of current stator phase voltage_s, until the calculating of stator phase voltage Difference between value and Real-time Collection value is less than predetermined threshold value M, thus realizes online real-time estimation and the correction of rotor flux.

What deserves to be explained is, step S106 and S107 are not necessarily limited after step S105 has performed and just start to hold OK, as long as obtaining the meter of stator phase voltage by step S101 to S105 and step S106 with S107 respectively before step S108 Calculation value (amplitude u of current stator phase voltage_s) and Real-time Collection value (meansigma methods u of three-phase voltage_av), all the application's In protection domain；A kind of example of Fig. 1, the rotor flux on-line amending method of magneto alternator as shown in Figure 1, its Real-time Collection value (meansigma methods u of three-phase voltage_av) the most accurate.

The rotor flux on-line amending method of the magneto alternator described in the present embodiment, by said process, finally Achieve the rotor flux on-line amending for magneto alternator；Avoid complicated and loaded down with trivial details parameter identification, calculate letter Single, it is easy to software realizes；Overcome the generator parameter fluctuation impact on maximum torque per ampere control, it is achieved torque current and The optimization of exciting current set-point, improves the control accuracy of electromagnetic torque, it is to avoid generator torque pulsation and generated energy lose, It is effectively improved the stability that wind generator system runs.

In another specific embodiment of the present invention, on the basis of Fig. 1, as in figure 2 it is shown, step S101 includes:

S111, according to torque-current transfer algorithm during maximum torque per ampere control, be calculated based on rotor unloaded Electromotive force e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*；

Preferably, according to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on rotor empty Carry electromotive force e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*The formula of institute's foundation is:

${i_d}^{*}=\frac{(-{\mathrm{\&psi;}}_f+\sqrt{{\mathrm{\&psi;}}_f^2+4{(L_q-L_d)}^2{\left({i_q}^{*}\right)}^2})}{2(L_q-L_d)};$

Wherein, L_qFor quadrature axis inductance, L_dFor d-axis inductance；

S112, according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate system The stator current set-point i of axle_s ^*, and power-factor angle α.

Preferably, described according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationSit Mark systemThe stator current set-point i of axle_s ^*The formula of institute's foundation is:

${i_s}^{*}=\sqrt{{\left({i_d}^{*}\right)}^2+{\left({i_q}^{*}\right)}^2};$

Described according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemAxle The formula of power-factor angle α institute foundation be:

$\mathrm{\&alpha;}=\mathrm{\&delta;}-\mathrm{\&phi;}=\arctan \frac{u_d}{u_q}-\arctan \frac{{i_d}^{*}}{{i_q}^{*}}=\arctan \frac{-R_s{i}_d+{\mathrm{\&omega;}}_s{L}_q{i}_q}{-R_s{i}_q-{\mathrm{\&omega;}}_s{L}_d{i}_d+{\mathrm{\&omega;}}_s{\mathrm{\&psi;}}_f}-\arctan \frac{{i_d}^{*}}{{i_q}^{*}};$

Wherein, δ is power angle, and φ is internal power factor angle, u_dAnd u_qIt is respectively permagnetic synchronous motor base when steady-state operation In rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator voltage vector value of q axle component, L_qFor quadrature axis inductance, L_dFor D-axis inductance, R_sFor stator phase resistance, ω_sFor synchronizing angular rate.

Preferably, step S104 includes:

According to based on rotor no-load electromotive force e₀The angle of orientation, is converted, by stator three-phase by Clark conversion and Park Alternating current I_u、I_v、I_wBe converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、 i_q。

Preferably, according to based on rotor no-load electromotive force e in step S105₀The dq coordinate system d axle of orientation and the electric current of q axle Component i_d、i_q, it is calculated amplitude u of current stator phase voltage_sThe formula of institute's foundation is:

$u_s=\sqrt{{u_d}^2+{u_q}^2}=\sqrt{{\left({\mathrm{\&omega;}}_s{L}_q{i}_q\right)}^2+{(-{\mathrm{\&omega;}}_s{L}_d{i}_d+{\mathrm{\&omega;}}_s{\mathrm{\&psi;}}_f)}^2};$

Wherein, u_dAnd u_qIt is respectively permagnetic synchronous motor when steady-state operation based on rotor no-load electromotive force e₀The dq of orientation Coordinate system d axle and the stator voltage vector value of q axle component, L_qFor quadrature axis inductance, L_dFor d-axis inductance, ω_sFor synchronizing electric angle speed Degree.

Preferably, according to stator three-phase voltage U in step S107_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_avInstitute The formula of foundation is:

$u_{av}=\frac{U_u+U_v+U_w}{3}.$

Fig. 4 be magneto alternator provided by the present invention rotor flux on-line amending method in permanent-magnet synchronous generating The three dimensional vector diagram of machine.Wherein, e₀The unloaded induction electromotive force produced for permanent magnet fundamental wave magnetic field, its value is equal to ω_sψ_f；E is forever Magnet fundamental wave magnetic field produces armature induction electromotive force；δ is power angle, with u_sDelayed e counterclockwise₀For just；α is power-factor angle, with i_sU counterclockwise_sAdvanced is just；φ is internal power factor angle, with i_sDelayed e counterclockwise₀For just.

Use in Fig. 4 based on rotor no-load electromotive force e₀The dq synchronous rotating frame of orientation is reference frame, permissible Obtain permagnetic synchronous motor when steady-state operation based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and q axle component Stator voltage vector value:

$\left\{\begin{array}{c}{u}_d=-R_s{i}_d+{\mathrm{\&omega;}}_s{L}_q{i}_q\\ u_q=-R_s{i}_q-{\mathrm{\&omega;}}_s{L}_d{i}_d+{\mathrm{\&omega;}}_s{\mathrm{\&psi;}}_f\end{array}\right..$

When described magneto alternator is claw pole type motor, then the computing formula of stator current set-point is:

${i_d}^{*}=\frac{(-{\mathrm{\&psi;}}_f+\sqrt{{\mathrm{\&psi;}}_f^2+4{(L_q-L_d)}^2{\left({i_q}^{*}\right)}^2})}{2(L_q-L_d)};$

${i_s}^{*}=\sqrt{{\left({i_d}^{*}\right)}^2+{\left({i_q}^{*}\right)}^2};$

Can obtain according to Fig. 4, the internal power factor angle of stator current is:

$\mathrm{\&phi;}=arctan\frac{{i_d}^{*}}{{i_q}^{*}};$

When described magneto alternator is Non-Salient-Pole Motor, then the i in above formula_d ^*=0, internal power factor angle φ=0.

According to stator current d axle and the set-point i of q axle component_d ^*、i_q ^*, permagnetic synchronous motor can be calculated in stable state Based on rotor no-load electromotive force e during operation₀The dq coordinate system d axle of orientation and stator voltage vector value u of q axle component_d、u_q, then electricity Acc power angle is:

$\mathrm{\&delta;}=arctan\frac{u_d}{u_q};$

By Fig. 4, the relation between power-factor angle α and φ and power angle δ is:

α=δ-φ.

And then obtain the computing formula of above-mentioned power-factor angle α.

In another specific embodiment of the present invention, on the basis of Fig. 1, as it is shown on figure 3, step S109 includes:

If u_s-u_av＞ M, then perform step S191, will currently carry out the rotor magnetic that described torque-current transfer algorithm calculates Chain ψ_fIt is multiplied by adjusted coefficient K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；

If u_av-u_s＞ M, then perform step S192, will currently carry out the rotor magnetic that described torque-current transfer algorithm calculates Chain ψ_fIt is multiplied by adjusted coefficient K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f。

Work as u_s-u_avDuring ＞ M, illustrate that stator virtual voltage is the most on the low side compared with theoretical value, according to stator voltage and rotor Monotonic increase relation between magnetic linkage, will should currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by Adjusted coefficient K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；Work as u_av-u_sDuring ＞ M, illustrate that stator is real Border voltage is the most higher compared with theoretical value, will should currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_f It is multiplied by adjusted coefficient K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f；

According to revised rotor flux ψ_f(1), return step S101 to S108, re-start stator current set-point, merit Rate factor angle, stator phase voltage amplitude and the calculating of meansigma methods, when amplitude u of current stator phase voltage_sWith putting down of three-phase voltage Average u_avBetween difference still greater than predetermined threshold value M time, will currently carry out described torque-current transfer algorithm calculate rotor Magnetic linkage is at ψ_f(1)On the basis of be again multiplied by corresponding correction factor, in rotor flux correction value be:OrIn the case of, repetitive cycling n times are held Row step S101 to S108 (N=1,2,3 ...), until amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_av Between difference less than predetermined threshold value M.

Another embodiment of the present invention additionally provides the rotor flux on-line amending device of a kind of magneto alternator, such as figure Shown in 5, including: the first computing unit 101, control unit the 102, first collecting unit 103, converting unit 104, second calculate single Unit's the 105, second collecting unit the 106, the 3rd computing unit 107, judging unit 108, amending unit 109 and output unit 110；Its In:

First computing unit 101, for according to torque-current transfer algorithm during maximum torque per ampere control, calculates To based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；

Control unit 102 is for according to based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^* With power-factor angle α, by the current transformer of controlled current flow, the output electric current of magneto alternator is controlled；

First collecting unit 103 is for the stator three-phase alternating current I of magneto alternator described in Real-time Collection_u、I_v、 I_w；

Converting unit 104 is for according to based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、I_wBe converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q；

Second computing unit 105 is for according to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the electricity of q axle Flow component i_d、i_q, it is calculated amplitude u of current stator phase voltage_s；

Second collecting unit 106 is for the stator three-phase voltage U of magneto alternator described in Real-time Collection_u、U_v、U_w；

3rd computing unit 107 is for according to stator three-phase voltage U_u、U_v、U_w, it is calculated the meansigma methods of three-phase voltage u_av；

Judging unit 108 is for judging amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference Whether value is more than predetermined threshold value M；

If amending unit 109 is for amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference More than predetermined threshold value M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, Obtain revised rotor flux ψ_f(1)=K ψ_f；

Output unit 110 is for by revised rotor flux ψ_f(1)Output, to described first computing unit, re-executes Above-mentioned steps, until described judging unit judges amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween Difference is less than predetermined threshold value M.

The rotor flux on-line amending device of the magneto alternator described in the present embodiment, by above-mentioned principle, finally Achieve the rotor flux on-line amending for magneto alternator；Avoid complicated and loaded down with trivial details parameter identification, calculate letter Single, it is easy to software realizes；Overcome the generator parameter fluctuation impact on maximum torque per ampere control, it is achieved torque current and The optimization of exciting current set-point, improves the control accuracy of electromagnetic torque, it is to avoid generator torque pulsation and generated energy lose, It is effectively improved the stability that wind generator system runs.

Preferably, as shown in Figure 6, the first computing unit 101 includes:

First computing module 111, for according to torque-current transfer algorithm during maximum torque per ampere control, calculates Obtain based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*；

Second computing module 112, for according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientation 'sCoordinate systemThe stator current set-point i of axle_s ^*, and power-factor angle α.

Preferably, as it is shown in fig. 7, amending unit 109 includes:

First correcting module 191, if for u_s-u_av＞ M, then calculate currently carrying out described torque-current transfer algorithm Rotor flux ψ_fIt is multiplied by adjusted coefficient K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；

Second correcting module 192, if for u_av-u_s＞ M, then calculate currently carrying out described torque-current transfer algorithm Rotor flux ψ_fIt is multiplied by adjusted coefficient K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f。

Concrete operation principle is same as the previously described embodiments, repeats the most one by one.

Another embodiment of the present invention additionally provides the controller of a kind of magneto alternator, arbitrary including above-described embodiment The rotor flux on-line amending device of described magneto alternator.

Concrete, the rotor flux on-line amending device of described magneto alternator, as it is shown in figure 5, include: the first meter Calculate unit 101, control unit the 102, first collecting unit 103, converting unit the 104, second computing unit the 105, second collection list Unit's the 106, the 3rd computing unit 107, judging unit 108, amending unit 109 and output unit 110；Wherein:

First computing unit 101, for according to torque-current transfer algorithm during maximum torque per ampere control, calculates To based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；

Control unit 102 is for according to based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^* With power-factor angle α, by the current transformer of controlled current flow, the output electric current of magneto alternator is controlled；

First collecting unit 103 is for the stator three-phase alternating current I of magneto alternator described in Real-time Collection_u、I_v、 I_w；

Converting unit 104 is for according to based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、I_wBe converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q；

Second computing unit 105 is for according to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the electricity of q axle Flow component i_d、i_q, it is calculated amplitude u of current stator phase voltage_s；

Second collecting unit 106 is for the stator three-phase voltage U of magneto alternator described in Real-time Collection_u、U_v、U_w；

3rd computing unit 107 is for according to stator three-phase voltage U_u、U_v、U_w, it is calculated the meansigma methods of three-phase voltage u_av；

Judging unit 108 is for judging amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference Whether value is more than predetermined threshold value M；

If amending unit 109 is for amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference More than predetermined threshold value M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, Obtain revised rotor flux ψ_f(1)=K ψ_f；

Output unit 110 is for by revised rotor flux ψ_f(1)Output, to described first computing unit, re-executes Above-mentioned steps, until described judging unit judges amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween Difference is less than predetermined threshold value M.

Preferably, as shown in Figure 6, the first computing unit 101 includes:

First computing module 111, for according to torque-current transfer algorithm during maximum torque per ampere control, calculates Obtain based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*；

Second computing module 112, for according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientation 'sCoordinate systemThe stator current set-point i of axle_s ^*, and power-factor angle α.

Preferably, as it is shown in fig. 7, amending unit 109 includes:

First correcting module 191, if for u_s-u_av＞ M, then calculate currently carrying out described torque-current transfer algorithm Rotor flux ψ_fIt is multiplied by adjusted coefficient K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；

Second correcting module 192, if for u_av-u_s＞ M, then calculate currently carrying out described torque-current transfer algorithm Rotor flux ψ_fIt is multiplied by adjusted coefficient K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f。

Concrete operation principle is same as the previously described embodiments, repeats the most one by one.

In the present invention, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is real with other Executing the difference of example, between each embodiment, identical similar portion sees mutually.For device disclosed in embodiment Speech, owing to it corresponds to the method disclosed in Example, so describe is fairly simple, relevant part sees method part explanation ?.

The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction.Though So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention.Any it is familiar with those skilled in the art Member, without departing under technical solution of the present invention ambit, may utilize the method for the disclosure above and technology contents to the present invention Technical scheme makes many possible variations and modification, or is revised as the Equivalent embodiments of equivalent variations.Therefore, every without departing from The content of technical solution of the present invention, the technical spirit of the foundation present invention is to any simple modification made for any of the above embodiments, equivalent Change and modification, all still fall within the range of technical solution of the present invention protection.

Claims (11)

1. the rotor flux on-line amending method of a magneto alternator, it is characterised in that including:

According to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；

According to based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α, pass through The output electric current of magneto alternator is controlled by the current transformer of controlled current flow；

The stator three-phase alternating current I of magneto alternator described in Real-time Collection_u、I_v、I_w；

According to based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、I_wBe converted to based on rotor No-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q；

According to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q, it is calculated current Amplitude u of stator phase voltage_s；

The stator three-phase voltage U of magneto alternator described in Real-time Collection_u、U_v、U_w；

According to stator three-phase voltage U_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_av；

Judge amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference whether more than predetermined threshold value M；

If amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference more than predetermined threshold value M, then will Currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, obtains revised rotor magnetic Chain ψ_f(1)=K ψ_f；

According to revised rotor flux ψ_f(1), re-execute above-mentioned steps, until amplitude u of current stator phase voltage_sWith three-phase Meansigma methods u of voltage_avBetween difference less than predetermined threshold value M.

The rotor flux on-line amending method of magneto alternator the most according to claim 1, it is characterised in that described According to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on stator current orientationSit Mark systemThe stator current set-point i of axle_s ^*Include with the step of power-factor angle α:

According to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on rotor no-load electromotive force e₀Fixed To dq coordinate system d axle and the stator current set-point i of q axle component_d ^*And i_q ^*；

According to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemThe stator electricity of axle Stream set-point i_s ^*, and power-factor angle α.

The rotor flux on-line amending method of magneto alternator the most according to claim 2, it is characterised in that described According to torque-current transfer algorithm during maximum torque per ampere control, it is calculated based on rotor no-load electromotive force e₀Orientation Dq coordinate system d axle and the stator current set-point i of q axle component_d ^*And i_q ^*The formula of institute's foundation is:

${i_d}^{*}=\frac{(-{\mathrm{\&psi;}}_f+\sqrt{{\mathrm{\&psi;}}_f^2+4{(L_q-L_d)}^2{\left({i_q}^{*}\right)}^2})}{2(L_q-L_d)};$

Described according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemDetermining of axle Electron current set-point i_s ^*The formula of institute's foundation is:

${i_s}^{*}=\sqrt{{\left({i_d}^{*}\right)}^2+{\left({i_q}^{*}\right)}^2};$

Described according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationCoordinate systemThe merit of axle The formula of rate factor angle α institute foundation is:

$\mathrm{\&alpha;}=\mathrm{\&delta;}-\mathrm{\&phi;}=\arctan \frac{u_d}{u_q}-\arctan \frac{{i_d}^{*}}{{i_q}^{*}}=\arctan \frac{-R_s{i}_d+{\mathrm{\&omega;}}_s{L}_q{i}_q}{-R_s{i}_q-{\mathrm{\&omega;}}_s{L}_d{i}_d+{\mathrm{\&omega;}}_s{\mathrm{\&psi;}}_f}-\arctan \frac{{i_d}^{*}}{{i_q}^{*}};$

Wherein, δ is power angle, and φ is internal power factor angle, u_dAnd u_qIt is respectively permagnetic synchronous motor when steady-state operation based on turning Sub-no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator voltage vector value of q axle component, L_qFor quadrature axis inductance, L_dFor d-axis Inductance, R_sFor stator phase resistance, ω_sFor synchronizing angular rate.

The rotor flux on-line amending method of magneto alternator the most according to claim 1, it is characterised in that described According to based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、I_wBe converted to based on rotor empty Carry electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_qStep include:

According to based on rotor no-load electromotive force e₀The angle of orientation, is converted, by stator three-phase alternating current by Clark conversion and Park Electric current I_u、I_v、I_wBe converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q。

The rotor flux on-line amending method of magneto alternator the most according to claim 1, it is characterised in that described According to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q, it is calculated and works as front stator Amplitude u of phase voltage_sThe formula of institute's foundation is:

$u_s=\sqrt{{u_d}^2+{u_q}^2}=\sqrt{{\left({\mathrm{\&omega;}}_s{L}_q{i}_q\right)}^2+{(-{\mathrm{\&omega;}}_s{L}_d{i}_d+{\mathrm{\&omega;}}_s{\mathrm{\&psi;}}_f)}^2};$

Wherein, u_dAnd u_qIt is respectively permagnetic synchronous motor when steady-state operation based on rotor no-load electromotive force e₀The dq coordinate of orientation It is d axle and the stator voltage vector value of q axle component, L_qFor quadrature axis inductance, L_dFor d-axis inductance, ω_sFor synchronizing angular rate.

The rotor flux on-line amending method of magneto alternator the most according to claim 1, it is characterised in that described According to stator three-phase voltage U_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_avThe formula of institute's foundation is:

$u_{av}=\frac{U_u+U_v+U_w}{3}.$

The rotor flux on-line amending method of magneto alternator the most according to claim 1, it is characterised in that described If amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference more than predetermined threshold value M, then will be current Carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, obtains revised rotor flux ψ_f(1)=K ψ_fStep include:

If u_s-u_av＞ M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；

If u_av-u_s＞ M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f。

8. the rotor flux on-line amending device of a magneto alternator, it is characterised in that including:

First computing unit, for according to torque-current transfer algorithm during maximum torque per ampere control, be calculated based on Stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*With power-factor angle α；

Control unit, for according to based on stator current orientationCoordinate systemThe stator current set-point i of axle_s ^*And power Factor angle α, is controlled the output electric current of magneto alternator by the current transformer of controlled current flow；

First collecting unit, for the stator three-phase alternating current I of magneto alternator described in Real-time Collection_u、I_v、I_w；

Converting unit, for according to based on rotor no-load electromotive force e₀The angle of orientation, by stator three-phase alternating current I_u、I_v、I_w Be converted to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component i of q axle_d、i_q；

Second computing unit, for according to based on rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the current component of q axle i_d、i_q, it is calculated amplitude u of current stator phase voltage_s；

Second collecting unit, for the stator three-phase voltage U of magneto alternator described in Real-time Collection_u、U_v、U_w；

3rd computing unit, for according to stator three-phase voltage U_u、U_v、U_w, it is calculated meansigma methods u of three-phase voltage_av；

Judging unit, for judging amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference whether More than predetermined threshold value M；

Amending unit, if for amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference more than pre- If threshold value M, then will currently carry out the rotor flux ψ that described torque-current transfer algorithm calculates_fIt is multiplied by adjusted coefficient K, is repaiied Rotor flux ψ after just_f(1)=K ψ_f；

Output unit, for by revised rotor flux ψ_f(1)Output, to described first computing unit, re-executes above-mentioned step Suddenly, until described judging unit judges amplitude u of current stator phase voltage_sMeansigma methods u with three-phase voltage_avBetween difference little In predetermined threshold value M.

The rotor flux on-line amending device of magneto alternator the most according to claim 8, it is characterised in that described First computing unit includes:

First computing module, for according to torque-current transfer algorithm during maximum torque per ampere control, be calculated based on Rotor no-load electromotive force e₀The dq coordinate system d axle of orientation and the stator current set-point i of q axle component_d ^*And i_q ^*；

Second computing module, for according to stator current set-point i_d ^*And i_q ^*It is calculated based on stator current orientationSit Mark systemThe stator current set-point i of axle_s ^*, and power-factor angle α.

The rotor flux on-line amending device of magneto alternator the most according to claim 8, it is characterised in that institute State amending unit to include:

First correcting module, if for u_s-u_av＞ M, then will currently carry out the rotor magnetic that described torque-current transfer algorithm calculates Chain ψ_fIt is multiplied by adjusted coefficient K 1 (0.9 < K1 < 1), obtains revised rotor flux ψ_f(1)=K₁·ψ_f；

Second correcting module, if for u_av-u_s＞ M, then will currently carry out the rotor magnetic that described torque-current transfer algorithm calculates Chain ψ_fIt is multiplied by adjusted coefficient K 2 (1 < K2 < 1.1), obtains revised rotor flux ψ_f(1)=K₂·ψ_f。

The controller of 11. 1 kinds of magneto alternators, it is characterised in that include the arbitrary described permanent magnetism of claim 8 to 10 The rotor flux on-line amending device of synchronous generator.