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Description: 异步电机直接转矩控制定子磁链估算方法的研究-Direct torque control induction motor stator flux estimation methods
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Size: 3379200 |
Author: wangmeng |
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Description: scince directe:
Speed and rotor flux estimation of induction machines using a two-stage
extended Kalman filter
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Size: 796672 |
Author: LAZHAR |
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Description: A COMPARISON OF A FLUX OBSERVER WITH A BACK-EMF TECHNIQUE FOR SENSORLESS ROTOR POSITION ESTIMATION
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Size: 1913856 |
Author: hacen |
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Description: Paper about a new close loop current model flux observer to estimate the rotor flux, position and velocity of an induction machine. The current observer includes carefully designed sliding mode functions which are derivative of the fluxes along the and axes. Therefore, when the estimated current converges to the measured one, the flux estimation is a mere integration of the sliding mode function.
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Size: 484352 |
Author: gregbur |
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Description: Chapitre estimation et observation du flux rotorique
Section Observateur du flux rotorique
Le fichier <<Sol_Erreur_esti_Vers1.m>> est la solution de l exercice, page 254,dont l objectif est
d être capable de simuler l évolution de l erreur d estimation lorsque l observateur
de Verghese est utilisé à l aide de <<Matlab>>. -Chapitre estimation et observation du flux rotorique
Section Observateur du flux rotorique
Le fichier <<Sol_Erreur_esti_Vers1.m>> est la solution de l exercice, page 254,dont l objectif est
d être capable de simuler l évolution de l erreur d estimation lorsque l observateur
de Verghese est utilisé à l aide de <<Matlab>>.
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Size: 2048 |
Author: eln |
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Description: 异步电机的精确控制和速度辨识是交流传动系统中重要问题。在该仿真系统中，电机转速采用易于检测的电机定子电压和电流得到转速MRAS辨识算法来估算。由于速度辨识算法中电压模型的纯积分环节会引起的误差积累和漂移问题，采用改进积分型转子磁链估算模型来解决。-The precise control and the speed identification of AC motor are the very important issues on AC drive system.In this system, induction motor is controlled by the direct torque control, stator flux is estimated by u-n model observer that is effective in the full range of speed, motor speed is estimated by MRAS speed identification algorithm that is depended on the voltage and the current of motor stator easily detected. The modified integral rotor flux estimation model is used to solve the problem that the normal model can be affected by the error accumulation and drift of integral calculation in the voltage model of conventional speed identification algorithm.
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Size: 21504 |
Author: 王晨 |
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Description: 介绍一种定子磁链的估计策略，很有参考价值的文献-Introduction of a stator flux estimation strategy worthy of literature
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Size: 414720 |
Author: 唐传胜 |
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Description: 基于异步电机的双闭环控制，包含磁链估算，速度环，转矩环控制-Containing flux estimation based on the dual closed-loop control of induction motor, the speed loop, the torque loop control
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Size: 10240 |
Author: 成石 |
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Description: Speed & Flux estimation by Extended Kalman Filter for Sensorless Direct Torque Control of Saturated Induction Machine
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Size: 231424 |
Author: Zegai Mohamed Amine |
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Description: 首先提出了基于微分几何控制理论的双馈发电机非线性多输入多输
状态反馈解藕控制方案，通过非线性坐标变换和非线性状态反馈，使双
发电机的磁链和转速两个子系统实现了动态完全解藕。其次采用基于定
磁场定向的双馈发电机矢量控制，实现定子侧有功功率和无功功率的解藕
为了消除交叉藕合电动势对发电机参数的影响，采用内模控制解藕控制
案，使系统具有良好的输出动态性能。最后在分析双馈发电机的数学模
和矢量控制的基础上，提出了一种基于模型参考自适应方法的定子、转
磁链观测、发电机转速估计和转子电阻辨识算法，应用Lyapunov原理证
了估计的收敛性，并应用于上述解藕控制方案中。在对算法进行理论推
的基础上，应用Matlab/simulink，对各个算法和系统进行了仿真，检验了
算法和控制方案的可行性。
-First proposed nonlinear multi-input multi-input state feedback the decoupled control programs through nonlinear coordinate transformation and nonlinear state feedback control theory based on differential geometry doubly-fed generator, dual generator flux and speed sub-systems to achieve the dynamic completely decoupled. Secondly, based on the fixed magnetic field oriented vector control of doubly-fed generator stator side active power and reactive power decoupling in order to eliminate the cross-coupling of the electromotive force of the generator parameters using the internal model control decoupling control case, so that the system which has good dynamic performance. Finally, in the analysis of the doubly-fed generator based on the mathematical model, and vector control, a method based on the model reference adaptive stator, turn flux observer, generator speed estimation and rotor resistance identification algorithm using the Lyapunov principle permit estimated convergence, and appl
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Size: 6056960 |
Author: zhangjie |
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Description: This paper proposes a programmable low pass
filter (LPF) to estimate stator flux for speed sensorless stator
flux orientation control of induction motors. The programmable
LPF is developed to solve the dc drift problem associated with a
pure integrator and a LPF. The pole of the programmable LPF is
located far from the origin in order to decrease the time constant
with the increasing speed. In addition, the programmable LPF
has the phase/gain compensator to estimate exactly stator flux
in a wide speed range. Consequently, the drift problem is much
improved and the stator flux is exactly estimated in the wide speed
range. The validity of the proposed programmable LPF is verified
by speed sensorless vector control of a 2.2 [kW] three-phase
induction motor.
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Size: 205824 |
Author: sajitsanit |
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Description: On the stator flux linkage estimation of an PMSM with extended kalman filters
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Size: 1147904 |
Author: badro |
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Description: 搭建永磁同步电机的直接转矩控制仿真模型
1，实测电流经过3/2变换得到alpha-beta轴上的电流；
2，估计模块中包含定子磁链和电磁转矩的估算，其中，定子磁链观测是采用基于转子位置和定子电流的磁链估计，电磁转矩直接在alpha-beta轴上计算；
3，转速调节模块和转矩调节模块直接采用PI调节器；
4，预期电压矢量估计模块，根据k时刻的磁链幅值与相位和k+1时刻的磁链幅值和相位计算出来的；
5，SVMPWM是空间电压矢量调制模块，实现空间任意角度任意大小的电压矢量，从而控制磁链轨迹近似为圆型；
6，逆变器模块和电机模块均采用系统自带的；-Build a permanent magnet synchronous motor direct torque control simulation model, the measured current after 3/2 transform the current alpha-beta axis estimated module included in the estimation of the stator flux and the electromagnetic torque, stator flux chain observation is based on the position of the rotor and the stator current flux estimates, the electromagnetic torque directly in the alpha-beta axis 3 speed controller module and torque adjustment module directly using the PI regulator expected voltage vector estimation module , calculated according to the time k flux amplitude the phase and k+1 time flux amplitude and phase 5, SVMPWM the space voltage vector modulation module voltage vector space at any angle of any size, thereby controlling the flux path approximate round inverter module and motor module system comes
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Size: 18432 |
Author: wk |
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Description: The
estimation technique works well and the sensor less speed control
scheme can achieve fast transient response as good as that of the
induction motor with sensors and at the same time maintain a
wide speed control range.
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Size: 195584 |
Author: adel |
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Description: This paper proposes a new and explicitly frequencyadaptive
method for Virtual Flux estimation and voltage sensorless
grid synchronization under unbalanced conditions.
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Size: 510976 |
Author: Fethi |
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Description: In this paper an approach to estimate the speed and
the stator flux linkage of a three Phase induction motor by
means of an algorithm using dSPACE is proposed. Emphasis
is given on reduction of the problem of saturation associated
with the pure integrator, while flux estimation. Speed is
estimated using a sensor (MOC7811) mounted at the motor
shaft. Experimental investigation is carried out on a 1 H.P.
motor, a digital inverter controller, an IGBT power module
for inverter/chopper and dSPACE Controller Board
(CP1104). Real time signals like three phase currents, PWM
Pulses, fixed DC link voltage and response of sensor
MOC7811 are the input parameters to the Dspace controller
board, and using these parameters stator flux and speed is
estimated.
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Size: 661504 |
Author: haimp |
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Description: 绝对是论坛里面最优秀的pmsm_DTC仿真了
1.按照文件中的参考文献一步一个脚印搭建的永磁同步电机直接转矩控制模型，参数也经过本人一步一步调试过了，控制效果非常好，波形非常好。
2.参考文献也在文件中，良心之作。 模块也非常清晰，房子模块化非常分明，一个模块实现一个功能，非常适合你拿去做毕业设计，也非常适合新手学习。
3.采用dq轴的磁链模型，避免了积分器的使用，因此解决了磁链估算值中直流量的积分问题。该模型绝对正确，可完美在上面构造无传感器仿真，基于卡尔曼的等等，以及预测控制仿真，占空比直接转矩等等都可以完美构建。(It's absolutely the best pmsm_DTC simulation in the forum, otherwise the other is the plagiarism, or the waveform is not right, or the part of the magnetic chain is forced to be reduced by 2, which is very inappropriate.
1., a direct torque control model of permanent magnet synchronous motor is built based on references and references. The parameters are also debugged by myself step by step. The control effect is very good, and the waveform is very good.
The 2. reference is also in the document, the masterpiece of conscience. Module is also very clear, modular house is very clear, a module to achieve a function, it is very suitable for you to do graduate design, is also very suitable for beginners to learn.
The 3. flux model of DQ axis, to avoid the use of so as to solve the integrator, flux estimation value of integral straight flow. The model is absolutely right, and it is perfect i)
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Size: 270336 |
Author: 菜菜踩踩踩 |
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Description: 通用变频器，产品级电流模型和电压模型磁链估算！！！！！(Universal Inverter, Product Level Current Model and Voltage Model Flux Estimation!!!!)
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Size: 2048 |
Author: 方不方便的 |
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Description: A novel method based on a combination of the Extended Kalman Filter (EKF) with Particle Swarm Optimization (PSO) to estimate the speed and rotor flux of an induction motor driveis presented. The proposed method will be performed in two steps. As a first step, the covariance matrices of state noise and measurement noise will be optimized in an off-line manner by the PSO algorithm. As a second step, the optimal values of the above covariance matrices are injected in our speed-rotor flux estimation loop (on-line).Computer simulations of the speed and rotor-flux estimation have been performed in order to investigate the effectiveness of the proposed method. Simulations and comparison with genetic algorithms (GAs) show that the results are very encouraging and achieve good performances.
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Size: 665750 |
Author: pudn0507@yahoo.fr |
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Description: FOC 估算端电压方法，通过磁链估算，补偿端电压精度(FOC estimate terminal voltage method, through flux estimation, compensation terminal voltage accuracy)
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Size: 2450432 |
Author: aimi666888 |
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