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stator voltages
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  定子电压
     According to the reduced order model of induction motor,a model reference adaptive speed identification algorithm was obtained from the equations of motor stator voltages and currents. An improved MRAS model was built with variable parameters. The detailed simulation researches were tested on the speed-sensorless vector control.
     利用电动机定子电压方程和电流方程得到电动机转速的模型参考自适应(MRAS)辨识算法,在此基础上建立了一个改进的变参数MRAS速度辨识数学模型,并在无速度传感器异步电动机矢量控制系统中对该速度辨识模型进行了研究,仿真结果验证了该变参数MRAS速度辨识模型具有满意的辨识精度和动态性能.
短句来源
     For above purpose, we must synchronously and constantly acquire several signals, such as stator voltages, stator currents, rotor speed of asynchronous motor and so on, and synchronously save, dynamically display, fully analyze and process the acquired signals.
     为了达到上述目的,需要同步长时间的采集异步电机端部定子电压信号、定子电流信号、电机转速等多路信号,并对采得的信号进行实时存储、动态显示和分析处理。
短句来源
     The paper describes a model -- reference adaptive system (MRAS) for the identification of induction motor speed ho measured motor stator voltages and currents.
     提出了一个利用电机定子电压和定子电流来实时辨识感应电动机速度的模型参考自适应系统(MRAS)。
短句来源
     According to the reduced order model of induction motor, a model reference adaptive speed identification algorithm is obtained from measured motor stator voltages and currents.
     根据异步电机的数学模型,利用易于检测的电机定子电压和电流得到电机转速的模型参考自适应辨识算法。
短句来源
     By means of space vector representation the stator voltages with optimization SPWM are computed.
     采用空间矢量法计算出了优化SPWM调制时的异步电动机定子电压
短句来源
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  “stator voltages”译为未确定词的双语例句
     An Improved Rotor Flux Estimation Model Based on Stator Voltages and Currents
     一种改进的电压型转子磁链估计模型
短句来源
     Just using the stator currents, stator voltages, and velocity, the method proposed in the paper makes real time identification of induction motor parameters based on the least squares identification algorithm. The method doesn't use the rotor flux signal, avoiding the coupling between the rotor flux observation and the parameter identification.
     本文提出仅用电机的定子电流、电压和转速进行电机参数的辨识方法,它利用递推最小二乘法进行在线参数辨识,该方法不需要观测得到的磁链信号,消除了磁链观测和参数辨识的耦合。
短句来源
     The paper describes a model reference adaptive system for the identification of induction motor speed from measured motor stator voltages and currents.
     提出了利用异步电动机电压和定子电流来实时辩识感应电动机速度的模型参考自适应系统。
短句来源
     Base on the stator currents and stator voltages,take the rotor speed as a state variable of the system,this paper presents a Extended Kalman Filter to estimate the rotor speed.
     利用扩展卡尔曼滤波器,将转速看成一个状态量,根据定子的电流和电压值估算转速。
短句来源
     Based on the stator currents and stator voltages,taking the rotor speed as a state variable of the system,to estimate the rotor speed,the Extended Kalman Filter to be optimized by choosing the proper initial value,the experiment results of estimation speed value with high veracity,the system with a strong robustness to be insensitive to the machine parameter variations were presented in this paper.
     通过仿真对滤波器初值的选取进行了研究,得到优化的卡尔曼滤波器。 试验结果表明,速度估算的准确性高,系统对于电机参数的变化不敏感,具有较强的鲁棒性。
短句来源
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  相似匹配句对
     (3) There are two output voltages because two windings are in its stator.
     3、定子采用了双绕组结构,实现了双电压输出。
短句来源
     Countermeasure and Application for the Residual Voltages of AM after Stator Supply Disconnection
     异步电动机失电残余电压的防范与应用
短句来源
     the electromagnetic vibration of the stator;
     定子机座的电磁振动;
     Fill-in Stator Grounding and its Application
     注入式定子接地保护新方案及应用
短句来源
     The voltages are realized by SVM-PWM.
     计算出的电压矢量由空间电压矢量脉宽调制方法实现。
短句来源
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  stator voltages
The rotor position angle and rotating speed are estimated by evaluating the instantaneous values of stator voltages and currents.
      
State-variable equations are given for the case of asymmetrical stator voltages and external resistances.
      
The modulator establishes proportionality between the fundamental components of the stator voltages and their reference signals.
      
Therefore we are restricted to the stator voltages, currents, the torque and the rotor speed.
      
Such disturbances are taken into account by using the actual stator voltages us at the machine terminals as feedback signals for error detection.
      
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By introducing directly triphase parameters and considering stator current as control variable, the state equations of induction motor have been derived in this paper. Since the actual phase parameters are introduced directly, this kind of state equations is favourable for applying it in association with the current-controlled type inverter. Besides the derivation of such fundamental equations expressing the transient process of current-controlled . induction motor, the steady state initial values of the...

By introducing directly triphase parameters and considering stator current as control variable, the state equations of induction motor have been derived in this paper. Since the actual phase parameters are introduced directly, this kind of state equations is favourable for applying it in association with the current-controlled type inverter. Besides the derivation of such fundamental equations expressing the transient process of current-controlled . induction motor, the steady state initial values of the transformed rotor flux links ψ2A and ψ2c are also discussed.Summary. Triphase physical quantities of rotor can be transformed into those in stator system by the following matrix:is applicable to the biphase transformation so as to express the fundamental equations in terms of actual values of stator. To obtain the steady state in simulation, initial values of flux links ψ2A and ψ2B can be assigned ar-bitralily, e.g. the null initial value (cf. Fig. 2) , but it is time-consuming. Two possible methods of estimating the initial values of flux links are thus suggested based on assumptions that the resultant flux link field of rotor is rotation field or the stator current is of sinusoid. Initial values of ψ2A and ψ2B can be assigned in either way.Fig.1 A 3-phase induction motor fed by current-controlled inverter Fig.2 Time responses ψ2A(t) and ψ2B(t) as ψ2A0 = ψ2B0 =0Fig.3 Time responses ψ2A(t) and ψ2B(t) as ψ2A0= -0.0425887 (a) and0.2 (6)Fig.4 Two cases of assigning initial values to stator current Fig.5 Steady-state equivalent circuit: (a) in form of complex vector,(b) correspondent to stator voltage equation.

本文提出绕线型异步机转子量变换到兰相定子轴系的变换式,并用它导出用转子磁链和实际定子量表达的状态方程。为求解微分方程,用圆形旋场和正弦电流这两种假设估算稳态初值,并通过仿真得出转子磁链和转矩的波形。最后,给出定子电流为基波时的电流型异步机的机械特性公式。

This paper features a comprehensive survey of all the plans, which are applicable to crane hoists, of the speed control of wound motor rotor thyristor. With the development of power semi-conductors, these plans will find their wide application and perfection. The paper believes that the speed control by the rotor thyristor is simpler than and superior to that by a.c. stator voltage regulation. In order to solve large overloading required by low speed and long operation, the paper analyses the constitution...

This paper features a comprehensive survey of all the plans, which are applicable to crane hoists, of the speed control of wound motor rotor thyristor. With the development of power semi-conductors, these plans will find their wide application and perfection. The paper believes that the speed control by the rotor thyristor is simpler than and superior to that by a.c. stator voltage regulation. In order to solve large overloading required by low speed and long operation, the paper analyses the constitution and performance of the speed control of a.c. motors both by pulse modulation and resistance regulation. As a result, this paper provides the cases in which all the plans can be applied.

本文对起重装置适用的绕线电动机转子可控硅调速各种方案进行了综述。随着电力半导体器件的发展,这些方案将日益广泛得到应用与完善。文中指出转子可控硅调速较交流电动机定子调压调速简单、优越。为进一步解决低速要求过载能力大,并能较长时间运行的问题,本文分析比较了交流电动机脉冲调速与调阻调速等方案的组成与性能,并指出其适用的场合。

This paper introduces an approach to calculate startting damper cuurent and temperature distributions in salient pol synchronous motors. D-Q equivalent circuit analysis and finite element solution of electromagnetic field are combined in this method. The comparison of calculated damper temperature rises with tested results on a 2200KW synchronous motor shows that the presented computation method has a good engineering accuracy. The influences of stator voltage and attached resistance to the field winding...

This paper introduces an approach to calculate startting damper cuurent and temperature distributions in salient pol synchronous motors. D-Q equivalent circuit analysis and finite element solution of electromagnetic field are combined in this method. The comparison of calculated damper temperature rises with tested results on a 2200KW synchronous motor shows that the presented computation method has a good engineering accuracy. The influences of stator voltage and attached resistance to the field winding on the startting damper cuurents and temperature rises are also discussed in the paper.

本文讨论了用场路结合,d—q轴等值电路配合有限元求解电机电磁场,计算同步电动机在起动过程中阻尼绕组电流和温升的方法。对一台2200KW实际同步电动机阻尼绕组起动温升的计算值同实测结果进行了比较,表明文中提出的方法切实可行,具有较好的工程精确度。文中还讨论了定子电压及转子励磁绕组串接附加电阻对阻尼绕组起动电流与温升的影响。

 
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