Description: 一种适用于感应电机的定子磁链优化的直接转矩控制技术。-One for induction motor stator flux-optimized direct torque control technique. Platform: |
Size: 373760 |
Author:ligw |
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Description: 异步电机矢量控制控制的matlab实现，系统采用3个pi调节器，分别为磁链调节器、转矩电流调节器、转速调节器，封装得比较好，适合初学者，版本matlab7.1-Vector control of induction motor control to achieve matlab, system modulator 3 pi, respectively, flux regulator, torque current regulator, speed regulator, a better package than is suitable for beginners, version matlab7.1 Platform: |
Size: 11264 |
Author:江明 |
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Description: 直接转矩控制模型,采用绕线式异步电动机.仿真圆形磁链-Model of direct torque control using induction motor winding. Simulation of radio flux Platform: |
Size: 16384 |
Author:何银萍 |
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Description: 三相异步电机的直接转矩控制matlab仿真模型，发出来供大家学习、指正，希望对你有用。-The simulink model of 3-phase iduction motor DTC control，it is maybe useful to your study. Platform: |
Size: 15360 |
Author:李全武 |
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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. Platform: |
Size: 21504 |
Author:王晨 |
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Description: 该仿真模型是一种利用模糊控制器调节PWM信号占空比的异步电动机直接转矩控制的策略，即在传统异步电动机直接转矩控制的基础上，用模糊控制器代替传统DTC中的滞环比较器和空间电压矢量状态选择器来细分控制规则，最后控制逆变器的开关，以减小转矩和磁链脉动，从而改善交流异步电机伺服系统的动、静态品质，使整个系统具有较强的鲁棒性和自适应性。-A method of the stator resistance estimate which based on the fuzzy neural network was proposed and the motor speed is estimated by MRAS speed identification algorithm based on the stator voltage and the current that can be easily detected. Besides, a new design of fuzzy direct torque control system of induction motor was introduced in this paper, which based on strategy of modulating the duty cycle to decrease the torque and stator flux ripple. This design uses fuzzy control block to instead of the traditional space voltage vector selector to control the inverter switch which can improve the static and dynamic performances of AC asynchronous motors, which make the whole control system have strong robustness. Platform: |
Size: 14336 |
Author:王晨 |
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Description: The induction motor is fed by a current-controlled PWM inverter which is built using a Universal Bridge block. The motor drives a mechanical load characterized by inertia J, friction coeficient B, and load torque TL . The speed control loop uses a proportional-integral controller to produce the quadrature-axis current reference iq* which controls the motor torque. The motor flux is controlled by the direct-axis current reference id*. Block DQ-ABC is used to convert id* and iq* into current references ia*, ib*, and ic* for the current regulator. Current and Voltage Measurement blocks provide signals for visualization purpose. Motor current, speed, and torque signals are available at the output of the Asynchronous Machine block.-The induction motor is fed by a current-controlled PWM inverter which is built using a Universal Bridge block. The motor drives a mechanical load characterized by inertia J, friction coeficient B, and load torque TL . The speed control loop uses a proportional-integral controller to produce the quadrature-axis current reference iq* which controls the motor torque. The motor flux is controlled by the direct-axis current reference id*. Block DQ-ABC is used to convert id* and iq* into current references ia*, ib*, and ic* for the current regulator. Current and Voltage Measurement blocks provide signals for visualization purpose. Motor current, speed, and torque signals are available at the output of the Asynchronous Machine block. Platform: |
Size: 15360 |
Author:jurifa |
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Description: The article concerns observing states of the Induction Motor (IM) using a Luenberger observer in the speed servo drive.
The movement of the motor and observer roots is analyzed for a variable speed. Following the analysis, a new method for
gain evaluation of the IM magnetic flux observer is presented. This structure is extended by including an adaptive speed
observer. The functionality of the presented method is proved in simulations using MATLAB Simulink. Platform: |
Size: 1097728 |
Author:aa |
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Description: 传统异步电机直接转矩控制多采用六边形磁链控制或六区间的圆形磁链控制，容易造
成转矩和磁链脉动过大，限制了其实用范围。针对此缺陷，本文采用矢量细分的方法，将传统的六电压矢量和六扇区细分为十二电压矢量和十二个扇区，制定了相应的矢量开关表，并通过 MATLAB 对其进行了仿真实验。仿真结果表明，基于矢量细分的异步电机直接转矩控制能够有效改善磁链轨迹，减小转矩脉动，提高系统控制性能。 -Conventional induction motor direct torque control multiple uses hexagonal flux control or six intervals round flux control, likely to cause the torque and flux ripple is too large, in fact, with limited scope. For this defect, we use the vector segmentation method, the traditional six voltage vectors and six sectors subdivided into twelve voltage vector and twelve sectors, the development of the corresponding vector switching table, and through its MATLAB a simulation experiment. Simulation results show that vector-based segmentation of Induction Motor Direct Torque Control can effectively improve the flux trajectory, reducing the torque ripple and improve the system control performance. Platform: |
Size: 393216 |
Author:小鱼 |
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Description: 建立模型参考自适应系统(MRAS)来估计转子磁链，最后通过Matlab／Simulink仿真与基于DSP的无速度传感器异步电动机矢量控制实验-Model reference adaptive system (MRAS) to estimate the rotor flux, and finally through Matlab/Simulink Simulation and DSP-based induction motor speed sensorless vector control experiments Platform: |
Size: 57344 |
Author:刘轲 |
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Description: 基于matlab r2010b的转子磁链定向异步电机FOC模型-FOC model of rotor flux oriented induction motor based on MATLAB r2010b Platform: |
Size: 14336 |
Author:牛大春 |
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Description: 异步电机直接转矩控制系统仿真：
模型整体结构分为三大部分：主电路部分（直流电源、逆变器、电机）、控制系统部分（采用的是直接转矩控制，所以主要有坐标变换模块，灰色部分，磁链观测器模块，红色部分，直接转矩开关表选择模块，蓝色部分，以及外环的转速调节器ASR）剩下的就是仿真结果波形观测部分（观测信号依次向下为定子ab相线电压、三相定子电流、电机转速、电机电磁转矩）
运行初始条件为以1420r./min的额定转速电机空载启动，在0.3s时刻突加额定负载50牛米。在0.5s时刻电机转速突然下降为1200r/min。整个动态过程既可以分析稳态运行波形，又可以分析负载扰动情况下的动态响应和转速扰动情况下的动态响应。(Simulation of induction motor direct torque control system:
Model of the whole structure is divided into three parts: the main circuit part (DC power supply, inverter, motor control system (part), using the direct torque control, so the main coordinate transformation module, flux observer module, gray, red, direct torque switch table selection module, the blue part, and the outer ring of speed regulator ASR) the rest of the results observed (the observation signals are down for the AB phase stator voltage, three-phase stator current, motor speed, motor electromagnetic torque)
The initial conditions for the operation to start the motor no-load rated speed 1420r./min, 50 nm in 0.3s moment of sudden rated load. At 0.5s, the motor speed drops suddenly to 1200r/min. The whole dynamic process can not only analyze the steady state operation waveform, but also analyze the dynamic response under load disturbance and the dynamic response under the condition of speed disturbance.) Platform: |
Size: 30720 |
Author:rogermilk
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