永磁无刷电机问题

irien123

在论坛里下载了ansoft电机分析入门例子，其中在做永磁无刷电机例子时有些问题不明白，希望大家帮帮忙
文中在求解motion setup里 有这样一段话：
The software needs to differentiate between which objects are moving and which ones are stationary. This
is done by identifying the band object.
➤ Define the motion:
1. Choose Setup Solution/Motion Setup.
。。。。。。。。。。。。
6. To obtain a zero initial angle of the induced A-phase voltage, you must change the initial
position from 0 to 120 degrees. You must make certain that the permanent magnet axis is
oppositely aligned with the A-phase axis. RMxprt indicates the location of this axis. For clarity,
the following figure shows two poles. The A-phase axis is 105 degrees θe from the first slot
center, or 150 degrees θe from the x-axis. The permanent magnet axis is 90 degrees θe from the
x-axis. For the permanent magnet axis to oppositely align at the A-phase axis, the rotor must
rotate 240 degrees θe in the counter-clockwise direction, or 120 mechanical degrees.
7. Exit the Mechanical Setup window.
8. Choose Exit, and save the changes to the motion setup.
Verify the Trigger Position
Return to the 2D Boundary/Source Manager, and solve for the No-Load induced voltage to make certain
that the mechanical setup is correct.
➤ Verify the trigger position:
1. Choose Setup Boundaries/Sources, and then choose Edit/External Circuit.
2. Choose Launch Schematic Capture.
3. Change the DC resistance for the A and B phase windings from 4.5 ohms to 4.5 gigaohms.
4. Change the DC value of the voltage source from 220 volts to 0.
5. Save the changes, and exit Schematic Capture. Click OK to close the Edit External Circuit
window.
6. Save the changes, and exit the 2D Boundary/Source Manager.
这样做的目的是什么呢？我刚刚开始学，希望高手指点以下，非常感谢！！！！！

perch88

1 定转子要分开，两个之间是band，需要设置哪一部分是运动的，这样软件才知道。不设置会引起歧义，因为外面的也可以转
2 Mechanical Setup 窗口可以设置初始位置，初始位置设置成多少度取决于你的目的。这个在相应的土里面应该说得很清楚
3 进行空载noload分析，就是外加电压或者电流源设置为0，电阻设置成G欧姆相当于开路

irien123

太感谢了！！！！！！！！

hfjdyjs

非常感谢2楼的解说！

wangfei8261

解答的精彩！厉害呀。


[ 本帖最后由 wangfei8261 于 2008-1-15 13:56 编辑 ]

yykk2468

6. To obtain a zero initial angle of the induced A-phase voltage, you must change the initial
position from 0 to 120 degrees. You must make certain that the permanent magnet axis is
oppositely aligned with the A-phase axis. RMxprt indicates the location of this axis. For clarity,
the following figure shows two poles. The A-phase axis is 105 degrees θe from the first slot
center, or 150 degrees θe from the x-axis. The permanent magnet axis is 90 degrees θe from the
x-axis. For the permanent magnet axis to oppositely align at the A-phase axis, the rotor must
rotate 240 degrees θe in the counter-clockwise direction, or 120 mechanical degrees.


问题：如何获得A相轴线？

typical

厉害呀!!!!!!!!

TANGTANG

v11.2的我装了好多天了都不会，呵呵