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Description: 在异步电动机直接转矩控制中磁链扇区的计算，已调试好，运用方便-asynchronous motor in the direct torque control flux Sector's calculations, debugging, and use convenience
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Size: 2048 |
Author: 冉嘉奇 |
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Description: 直接转矩控制matlab7.4，simulink仿真系统，改进后的dtc-Direct Torque Control matlab7.4, simulink simulation systems, improved dtc
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Size: 18432 |
Author: 沈疏桐 |
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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: 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.
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Size: 373760 |
Author: ligw |
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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
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Size: 16384 |
Author: 何银萍 |
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Description: algorithm for flux sector selection for direct torque control
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Size: 7168 |
Author: hafeez |
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Description: 带转矩内环的转速磁链闭环矢量控制仿真系统，大家共同学习-The speed with torque inner loop flux vector control simulation system, we learn together
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Size: 14336 |
Author: 张莹 |
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Description: Paper about a new method to control flux and torque of an induction motor. Direct
Mean Torque Control (DMTC) combines the good dynamic performance of Direct Torque
Control (DTC) with the advantages of time equidistant control algorithms for digital
implementation in signal processor based systems. Experimental results confirm the validity
of the control scheme.
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Size: 351232 |
Author: gregbur |
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Description: Direct torque control simulink
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Size: 12288 |
Author: wohalex |
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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: 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.
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Size: 14336 |
Author: 王晨 |
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Description: This paper presents a new design of the torque and stator flux estimators for Direct
Torque control (DTC) for Field Programmable Gate Array (FPGA) implementation, which permit
very fast calculations. An alternative variable word-size approach in two’s complement fixedpoint
format is used for the implementation, in order to minimize calculation errors and the
hardware resource usage. The simulation results of DTC model in Matlab, which performed
double-precision calculations, are used as references to digital computations executed in FPGA
implementation. The Hardware-in-the-loop (HIL) method is used to verify the minimal error
between Matlab simulation and the experimental results, and thus the well-functionality of the
implemented estimators.
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Size: 435200 |
Author: T. H. Sutikno |
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Description: 采用Hopfield神经网络的改进异步电动机直接转矩控制方法，可以有效的降低电磁转矩、定子磁链和定子电流的波动。-Improved Hopfield neural network using asynchronous motor direct torque control method can effectively reduce the electromagnetic torque, stator flux and stator current fluctuations.
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Size: 438272 |
Author: 郝帅 |
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Description: modified direct torque control (DTC) scheme for
interior permanent magnet synchronous machine (IPMSM) is investigated
in this paper, which features in very low flux and torque
ripple and almost fixed switching frequency. It is based on the compensation
of the error flux linkage vector by means of space vector
modulation. Modeling and experimental results show that the flux
and torque ripples are greatly reduced when compared with those
of the basic DTC.With the new scheme, very short sampling time is
not essential. All the advantages of the basic DTC are still retained.
In addition, fixed switching frequency at different operating conditions
becomes possible.
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Size: 443392 |
Author: sajitsanit |
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Description: A comparison of stator flux linkage estimators for a direct torque controlled PMSM drive
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Size: 2039808 |
Author: badro |
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Description: 对感应电机的控制，依次分块地对磁通，转矩，转矩设计控制器，并对模型简化和未简化的情况做对比，适合于对感应电机控制各个环节的控制有更深的理解。留学实验课的成果-Induction motor control, in turn block the flux, torque, torque design of the controller, and the model is simplified and not simplified contrast, is suitable for the control of all aspects of a deeper understanding of the induction motor control. The outcome of the study in the experimental class
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Size: 70656 |
Author: 刘强 |
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Description: 针对永磁同步电机的传统直接转矩控制中的磁链和转矩脉动大的缺点,提出了十二扇区细分的磁链闭环控制方法和相应的电压开表。分析了电压矢量对电磁转矩和定子磁链的作用,得到有限的扇区和电压矢量会造成转矩和磁链脉动大。理论和实验对比分析了六扇区划分和十二扇区划分的控制性能。实验结果表明十二扇区划分的PMSM直接转矩控制方法,既保证了DTC的快速性,又很好地降低了转矩与磁链脉动。
-For the tradition of permanent magnet synchronous motor direct torque control flux and torque ripple big disadvantage, raised twelve sectors subdivision flux loop control method and the corresponding voltage to open the table. Analysis of the voltage vector of the electromagnetic torque and stator flux role, received limited sector and the voltage vector can cause large torque and flux ripple. Theoretical and experimental comparative analysis of six and twelve sectors divided into the control performance of the sector. Experimental results show that the twelve sectors divided PMSM direct torque control method, both to ensure the DTC fast, and very well reduce the torque and flux ripple.
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Size: 326656 |
Author: 小鱼 |
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Description: 随着异步电机开始在交流调速领域占统治地位，针对高性能异步电机的调速系统
研究得到广泛关注。特别是 20 世纪 80 年代直接转矩控制（DTC）的出现，以其简洁高
效的控制方式，进一步提高异步电机的性能。但传统 DTC 存在转矩和磁链滞环宽度使
得稳态时也会产生转矩脉动。因此高性能控制需要窄的滞环宽度,相应要求高逆变器开
关频率。大功率场合下必须低开关损耗和良好转矩控制性能，传统 DTC 难以同时满足
需求。
-With the beginning of the AC induction motor speed control field dominance, speed control system for high-performance induction motor research has been widespread concern. Especially in the 1980s, Direct Torque Control (DTC) appeared, with its simple and efficient way to control and further improve the performance of asynchronous motor. However, the existence of traditional DTC will produce torque and torque ripple flux hysteresis width when making steady. Therefore, high-performance control requires a narrower hysteresis width, corresponding demanding inverter switching frequency. Where high power must be low switching losses and good torque control performance is difficult to meet the needs of traditional DTC.
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Size: 1064960 |
Author: 任祖方 |
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Description: 直接转矩控制的matlab仿真，以异步电动机为控制对象，磁链、转矩双闭环，采用圆形磁链为目标，得到较好的仿真结果。-Direct torque control of the matlab simulation to the asynchronous motor as the control object, flux, torque double closed loop, the use of circular flux as the goal, get better simulation results.
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Size: 17408 |
Author: 朱哲晓 |
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Description: 直接转矩控制的实质是用空间矢量的分析方法，以定子磁场定向方式，对定子磁链和电磁转矩进行直接控制的(The essence of DTC is to directly control stator flux linkage and electromagnetic torque by means of space vector analysis and stator magnetic field orientation.)
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Size: 29696 |
Author: 工藤新一xi |
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