After the combination of direct flux control algorithms and over-modulation technique, a rapid dynamic torque response characteristic is also achieved in the flux-weakening control areas.
直接磁链控制算法与过调制技术相结合后,在弱磁控制区也实现了快速的动态转矩响应特性。
This flux has a direct impact on the standards that can be put in place, the management controls that can be exerted, and the governance that can be achieved.
这种流直接影响了可以设置的标准、可以施加的管理控制,以及可以实现的治理。
However, it is limited because of some problems associated with its direct use, which includes membrane flux decline and insufficient removal of dissolved organic matter.
然而,它是有限的,因为一些问题与它的直接使用,其中包括膜通量下降,不足以消除溶解的有机物质。
This paper obtains a new speed-sensorless direct torque control scheme for induction motor based on calculating the stator flux vector increment to determine the stator reference voltage.
在直接转矩控制理论基础上,推导出一种基于定子磁链矢量增量来确定定子参考电压矢量的新型无速度传感器直接转矩控制方案。
The stator flux-oriented direct torque control is widely used in high performance motion control of induction motors.
定子磁场定向的直接转矩控制逐渐被广泛应用于高性能异步电机调速系统。
When the estimated speed converges to the actual rotor speed, the rotor flux observed converges to its true value, which can be used in direct field orientation control (DFOC).
当电机转速的估计值收敛于转速的真实值时,观测的转子磁链也收敛于其真实值,可将其用于直接磁场定向控制中。
This paper analogy the selection of voltage space vector and the flux linkage estimate model of the direct torque control system of PMSM, and the realizing project of the system.
文章分析了永磁同步电机直接转矩控制系统的电压空间矢量选择和磁链估计模型,并提出了系统的实现方案。
This method is compared to the well-known direct field-oriented control (FOC) and stator flux vector control (SFVC) methods.
将该方法和著名的直接磁场定向控制(FOC)和定子磁通矢量控制(SFVC)进行比较。
At present, the flux estimation based on voltage model is widely used in direct torque control system.
目前,在直接转矩控制中大多采用电压模型来估算定子磁链。
On the basis of the scheme, a stator flux estimate technique based on stator resistance compensation is also presented, and the simulation system of the direct torque control project is established.
在此基础上,提出定子电阻整定的定子磁链估计方法,并建立一个定子磁场定向直接转矩控制的仿真系统。
The solute concentration and solvent concentration had no direct effect on the flux. The main effect on the flux is the character of solvent.
溶质浓度和溶剂浓度对通量没有直接影响,起决定作用的还是溶剂本身。
Thus the averaged relationships between the flux density of the direct solar radiation and the air mass under various coefficients of transparency P2 were obtained.
于是得到各种透明系数P_2状况下太阳直接辐射通量密度随大气质量变化的平均关系。
In a direct torque fuzzy control system of electric vehicle, when the voltage model is used as stator flux observer, the system's low speed performance becomes poor.
电动汽车直接转矩模糊控制系统中,定子磁链观测器采用电压模型时,系统低速性能变差。
On the basis of studying the speed estimation of direct torque control, a calculate method ameliorated on rotor flux is presented and is applied to the speed estimation.
在深入研究直接转矩控制系统速度辨识的基础上,提出了一种改进的转子磁链计算方法,并应用于系统的速度辨识中。
The direct sampling and the reciprocity method are applied to the calculation of the flux measured by a detector.
采用直接抽样法和倒易方法计算探测器的通量,得到了一致的结果。
Effect of furnace wall emissivity on surface heat flux of heated stock is analyzed for direct firing furnace and indirect heating furnace.
分析了炉壁黑度对炉膛辐射换热流的影响,分别对火焰直接加热炉和间接加热炉进行了讨论。
The results show that the thermal flux of radiation complies mainly with the solar direct radiation;
结果表明,辐射热通量主要依从于太阳直接辐射;
Speed control of direct torque controlled(DTC)induction motor drives depends on effectively establishing the stator flux.
直接转矩控制的感应电动机的速度控制需要有效地建立定子磁 通。
The amplitude of stator flux and torque Angle in permanent magnet synchronous motor (PMSM) are controllable, the implementation method of direct torque control in PMSM is not unique.
永磁同步电机转矩中定子磁链幅值和转矩角均为可控变量,直接转矩控制的实现方法不唯一。
Because the state equation's state variables are stator current and stator flux, the stator flux can be observer direct.
由于状态方程以定子电流和定子磁链为状态变量,定子磁链可直接观测得到。
For the flux trajectory PWM control is the basis of direct self-control, it is also a common controlling means used by modern transducer.
磁链轨迹控制PWM是直接转矩控制的基础,也是现代变频器普遍采用的控制方法。
Classical direct torque control method adopts the technique of 6 polygon flux linkage voltage modulation. It will generate torque pulsation and harmonic interference.
传统直接转矩控制技术采用的六边形磁链电压矢量调制方法,这会引起较大的转矩脉动和谐波干扰。
The thesis introduces the basic principle of Direct Torque Control on asynchronous motor. In the beginning, stator flux and torque can be got through a typical mathematics model of asynchronous motor.
本文首先介绍了异步电动机直接转矩控制的基本原理,从异步电动机的数学模型入手,逐步分析,从而得到磁链和转矩。
A novel stator flux estimator based on rotor position is presented, which is applied for direct torque controlled(DTC)surface mounted permanent magnet synchronous motor(PMSM)drives.
文中提出一种基于转子位置的面贴式永磁同步电动机的定子磁链估计方法。
This paper has explained the manufacture principle of Al-flux-cored welding wire, and studied the technical characteristics of Aluminium alloy welding with straight polarity direct current TIG method.
阐述了药芯铝焊丝的制造原理,研究了TIG直流正接焊接铝合金的工艺特点。
This thesis introduces the basic principle of direct torque control on asynchronous motor. Through mathematics model of asynchronous motor, stator flux and torque can be got.
本文首先介绍了异步电机直接转矩控制的基本原理,从异步电机的数学模型入手,逐步分析,从而得到磁链和转矩。
The PET melt flow type was estimated to be Newton flow after analysis. And the melt flux was in direct proportion with press fall.
PET熔体流动类型经分析判断为牛顿流动,熔体流量与压力降成正比关系。
The electrical drive system performance was improved using a model of the direct-axis magnetizing flux linkage space-phasor to develop a vector control scheme for the 12-phase synchronous motor.
为了提高舰船综合电力推进系统的性能,推导了十二相同步电动机直轴气隙磁链观测器的模型,籍此构建了十二相同步电动机矢量控制方案。
The electrical drive system performance was improved using a model of the direct-axis magnetizing flux linkage space-phasor to develop a vector control scheme for the 12-phase synchronous motor.
为了提高舰船综合电力推进系统的性能,推导了十二相同步电动机直轴气隙磁链观测器的模型,籍此构建了十二相同步电动机矢量控制方案。
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