Asynchronous Machine 异步电机
Library 库
Elements 元件
Description 说明
The Asynchronous Machine block implements a three-phase asynchronous machine (wound rotor, single squirrel-cage, or double squirrel-cage). It operates in either generator or motor mode. The mode of operation is dictated by the sign of the mechanical torque:
异步电机模块实现三相异步电机（绕线转子，单鼠笼式，双鼠笼式）。它能运行在任一发电机或电动机模式。操作模式是由机械转矩的符号决定： ? ? ?
If Tm is positive, the machine acts as a motor. If Tm is negative, the machine acts as a generator. 如果Tm为正时，本机作为一个电动机。
? 如果Tm为负时，本机作为发电机。
The electrical part of the machine is represented by a fourth-order (or sixth-order for the double squirrel-cage machine) state-space model, and the mechanical part by a second-order system. All electrical variables and parameters are referred to the stator, indicated by the prime signs in the following machine equations. All stator and rotor quantities are in the arbitrary two-axis reference frame (dq frame). The subscripts used are defined in this table.
电机的电气部分用四阶（或对双鼠笼电机来说是六阶）静态空间模型表示，机械部分用一个两阶系统描述。定子中所有涉及电气变量和参数，通过基本的符号在下列电机方程中被表示。所有定子和转子量是在任意两轴参考系（dq坐标系）。使用下标被定义在此表中。
Electrical System of the Wound-Rotor or Squirrel-Cage Machine 电气系统的绕线式转子或鼠笼式电机
ω — Reference frame angular velocity ωr — Electrical angular velocity ω - 参考角速度 ωR - 电气角速度 Vqs = Rsiqs + dφqs/dt + ωφds φqs = Lsiqs + Lmi'qr Vds = Rsids + dφds/dt – ωφqs φds = Lsids + Lmi'dr V'qr = R'ri'qr + dφ'qr/dt + (ω – ωr)φ'dr φ'qr = L'ri'qr + Lmiqs V'dr = R'ri'dr + dφ'dr/dt – (ω – ωr)φ'qr φ'dr = L'ri'dr + Lmids
Te = 1.5p(φdsiqs – φqsids) Ls = Lls + Lm L'r = L'lr + Lm Electrical System of the Double Squirrel-Cage Machine 双鼠笼式电机的电气系统
Vqs = Rsiqs + dφqs/dt + ωφds φqs = Lsiqs + Lm(i'qr1 + i'qr2) Vds = Rsids + dφds/dt – ωφqs φds = Lsids + Lm(i'dr1 + i'dr2) 0 = R'r1i'qr1 + dφ'qr1/dt + (ω – ωr)φ'dr1 φ'qr1 = L'r1i'qr1 + Lmiqs 0 = R'r1i'dr1 + dφ'dr1/dt – (ω – ωr)φ'qr1 φ' dr1 = L'r1i'dr1 + Lmids 0 = R'r2i'qr2 + dφ'qr2/dt + (ω – ωr)φ'dr2 φ'qr2 = L'r2i'qr2 + Lmiqs 0 = R'r2i'dr2 + dφ'dr2/dt – (ω – ωr)φ'qr2 φ'dr2 = L'r2i'dr2 + Lmids Te = 1.5p(φdsiqs – φqsids) Ls = Lls + Lm L'r1 = L'lr1 + Lm L'r2 = L'lr2 + Lm Mechanical System 机械系统
The Asynchronous Machine block parameters are defined as follows (all quantities are referred to the stator).
异步电机模块参数被定义如下（所有量均涉及到定子）。
Dialog Box and Parameters
You can choose between two Asynchronous Machine blocks to specify the electrical and mechanical parameters of the model, by using the pu Units dialog box or the SI dialog box. Both blocks are modeling the same asynchronous machine model. 对话框和参数
您能在两个异步电机模块中选择去指定模型的电气和机械参数，通过使用PU单位对话框或SI对话框。两个模块建模有相同的异步机模型。 Configuration Tab 配置“选项卡
Preset model 预设模式
For single squirrel-cage machines, provides a set of predetermined electrical and mechanical parameters for various asynchronous machine ratings of power (HP), phase-to-phase voltage (V), frequency (Hz), and rated speed (rpm). To make this parameter available, set the Rotor type parameter to Squirrel-cage and click Apply.
单鼠笼式电机，提供一组各种额定功率的异步电机预定的电气和机械参数（HP），线电压（V），频率（Hz），额定转速（rpm）。让这个参数可用，设置鼠笼转子类型参数，然后单击“Apply（应用）”。
Select one of the preset models to load the corresponding electrical and mechanical parameters in the entries of the dialog box. The preset models do not include predetermined saturation parameters.
在对话框的条目中选择一个预设的模型加载相应的电气和机械参数。预设的模型不包括预定的饱和度等参数。
Select No if you do not want to use a preset model, or if you want to modify some of the
parameters of a preset model.
如果你不想使用预设模式，或者如果你想修改预设模式的一些参数，选择“否”。
When you select a preset model, the electrical and mechanical parameters in the Parameters tab of the dialog box become nonmodifiable (unavailable). To start from a given preset model and then modify machine parameters:
当你选择一个预设模型，电气和机械参数的对话框中的“参数”选项卡成为不可更改的（不可用）。从某一特定的预设模型开始，然后修改电机参数：
1.Select the preset model that you want to initialize the parameters.
2.Change the Preset model parameter value to No. This does not change the machine parameters. By doing so, you just break the connection with the particular preset model. 3.Modify the machine parameters as you want, then click Apply.
1．选择预设模式，你想进行初始化的参数。
2．改变预设模型参数值为“否”，这不会改变电机的参数。通过这样做，你能断开连接的特定预置模式。
3．按你的要求设定设备参数，然后单击‘Apply’
Mechanical input
机械输入
Select the torque applied to the shaft or the rotor speed as a Simulink? input of the block, or to represent the machine shaft by a Simscape? rotational mechanical port.
选择转矩应用到轴或转子转速作为一个Simulink?模块的输入，或通过Simscape?旋转机械端口去代表机轴。
Select Torque Tm to specify a torque input, in N.m or in pu, and change labeling of the block input to Tm. The machine speed is determined by the machine Inertia J (or inertia constant H for the pu machine) and by the difference between the applied mechanical torque Tm and the internal electromagnetic torque Te. The sign convention for the mechanical torque is: when the speed is positive, a positive torque signal indicates motor mode and a negative signal indicates generator mode.
选择转矩TM指定一个转矩输入，单位N.m或PU，改变模块标签输入Tm。机器的运行速度是由机器转动惯量J（或惯性常数H对于以PU单位的电机）和所施加的机械转矩Tm和内部的电磁转矩Te之间的差来确定。机械转矩的符号法则是：当速度是正向的，正向转矩信号指示电动机模式，一个负向信号表明发电机模式。
Select Speed w to specify a speed input, in rad/s or in pu, and change labeling of the block input to w. The machine speed is imposed and the mechanical part of the model (Inertia J) is ignored. Using the speed as the mechanical input allows modeling a mechanical coupling between two machines.
选择速度W指定一个速度输入，单位为rad / s或PU，改变模块标签输入W。机器的运行速度被施加和模型的机械部件（转动惯量J）将被忽略。使用的机械输入的速度允许模拟两台机器之间的机械耦合。
The next figure indicates how to model a stiff shaft interconnection in a motor-generator set when friction torque is ignored in machine 2. The speed output of machine 1 (motor) is connected to the speed input of machine 2 (generator), while machine 2 electromagnetic torque output Te is applied to the mechanical torque input Tm of machine 1. The Kw factor takes into account speed units of both machines (pu or rad/s) and gear box ratio w2/w1. The KT factor takes into account torque units of both machines (pu or N.m) and machine ratings.