Description: 本文重点研究了智能控制策略对异步电动机直接转矩控制系统性能的改善。-This article focuses on the intelligent control strategy for induction motor direct torque control system performance improvements. Platform: |
Size: 2976768 |
Author:王大钊 |
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Description: 改进后的直接转矩控制，感应电机模型。电压空间矢量选择的优化模型-Improved direct torque control, induction motor model. Voltage space vector optimization model choice Platform: |
Size: 1866752 |
Author:刘伟 |
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Description: 异步电动机矢量控制直接转矩控制混合控制一种新颖的控制方式-Vector control induction motor direct torque control hybrid control Platform: |
Size: 734208 |
Author:dingjiahui |
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Description: 异步电机直接转矩控制，在两相静止坐标系下，将电机由三相变换为两相的矢量变换，模型结构简单，通俗易懂，能够迅速得出仿真结果。-Induction motor direct torque control, the two-phase stationary coordinate system, the motor from the three-phase transformation vector for the two-phase transformation, the model structure is simple and easy to understand, quickly gives the simulation results. Platform: |
Size: 7168 |
Author:秧秧 |
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Description: Paper about Induction motor drive based on direct torque control (DTC) which allows high dynamic performance to be obtained with very simple hysteresis control scheme. Direct control of the torque and flux is achieved by proper selection of inverter voltage space vector through a lookup table. In this paper apart from six sector look up
table used for classical DTC, a modified look up table, which also use six sectors but with different zones and a twelve sector table are presented. Platform: |
Size: 744448 |
Author:gregbur |
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Description:
In this paper, new scheme of direct torque control of induction motor for
electric vehicles is proposed and the results of an investigation into suitable
torque control schemes are also presented. The electric vehicle drive consists
of rewound induction motors and a three-level IGBT inverter. The schemes
investigated are Field Oriented Control, Direct Torque Control (DTC), and
DTC using Space Vector Modulation. The results of Matlab - Simulink
simulations and a comparison between the control schemes are presented. It is
found that the DTC using Space Vector Modulation scheme is best for this
application. Platform: |
Size: 11264 |
Author:RED1 |
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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: 矢量控制与直接转矩控制是当前主要的两种电机变频调速控制方法，已在两相交流感应电机中得到
了应用。分析了两相不对称电机矢量控制和直接转矩控制原理以及两相三桥臂逆变器的SVPWM实现方法；
运用Matlab的Simulink建立了两相不对称交流感应电机矢量控制和直接转矩控制调速系统的仿真模型，并
对两种控制系统进行了仿真研究，给出了仿真波形，进行了特性比较．
关键词：两相电机；矢量控制；直接转矩控制；SVPWM；MATLAB；仿真-Vector Control and Direct Torque Control is currently the main method of frequency control of two motors, has been in two-phase AC induction motor has been applied. Analysis of asymmetric two-phase motor vector control and direct torque control principle and two-phase SVPWM inverter arm Bridge Implementation the use of Matlab in Simulink to establish a two-phase AC induction motor asymmetry of vector control and direct torque control modulation speed of system simulation models, and the two control system was simulated, the simulation waveform characteristics were compared. Key words: two-phase motor vector control direct torque control SVPWM MATLAB Simulation Platform: |
Size: 153600 |
Author:卢维津 |
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Description: 感应电机直接转矩和矢量控制很好的仿真模型，值得学习和借鉴-Induction motor direct torque vector control and the simulation model well worthy of study and learning Platform: |
Size: 31744 |
Author:张红梅 |
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Description: In this paper a new approach to direct torque control
(DTC) of induction motor drive is presented. In comparison with
the conventional DTC methods [1], [22] the inverter switching frequency
is constant and is dramatically increased, requiring neither
any increase of the sampling frequency, nor any high frequency
dither signal. The well-developed space vector modulation technique
is applied to inverter control in the proposed DTC-based
induction motor drive system, thereby dramatically reducing the
torque ripple and speed ripple. Platform: |
Size: 143360 |
Author:sajitsanit |
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Description: sensorless induction motor drive is presented, in
which the principles of sliding-mode control, direct torque control
(DTC), and space-vector modulation are combined to ensure
high-performance operation, both in the steady state and under
transient conditions. Merits of the classic DTC transient behavior
are preserved, while the steady-state operation is significantly improved.
The torque and flux controllers, and motor state observer
are of the sliding-mode type. The inverter is directly controlled on
the basis of torque and flux errors, using space-vector pulsewidth
modulation. Computer simulations and experimental Platform: |
Size: 254976 |
Author:sajitsanit |
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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: 异步电机的直接转矩控制和空间矢量控制，附带另一个永磁同步电机的矢量控制，有说明文档。-Induction motor direct torque control and space vector control, with another vector control of permanent magnet synchronous motors, documentation. Platform: |
Size: 40960 |
Author:周预 |
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Search - direct vector control of induction motor