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D Q axis inductance calculator

这是一个简单的电机DQ轴计算器,输入Labc矩阵,输出$L_d$ 和 $L_q$

该电感计算器可用于计算三相交流电机的dq轴电感。

用法

在labc矩阵中输入L_A, L_B, L_C的自感、互感值。

点击"计算"按钮,即可得到dq轴电感Ld和Lq的值。

注意事项

该计算器使用mathjs和mathjax库,需要在浏览器中启用JavaScript。 输入的参数必须是数字。

公式

dq轴电感Ld和Lq的计算公式如下:

$$ i_{abc}=Ci_{dq0} \tag{1} $$

$$ \begin{align} \psi_{dq0} &= C^{-1}\psi_{abc} \\ &= C^{-1}L_{abc}i_{abc} \\ &= C^{-1}L_{abc}Ci_{dq0}\\ &= L_{dq0}i_{dq0} \tag{2} \end{align} $$

$$ L_{dq0}=C^{-1}L_{abc}C \tag{3} $$

其中,

$$L_{abc} = \begin{bmatrix} L_{aa} & L_{ab} & L_{ac} \\ L_{ba} & L_{bb} & L_{bc} \\ L_{ca} & L_{cb} & L_{cc} \\ \end{bmatrix}\tag{4}$$

$$ L_{dq0}= \begin{bmatrix} L_{dd} & L_{dq} & L_{d0} \\ L_{qd} & L_{qq} & L_{q0} \\ L_{0d} & L_{0q} & L_{00} \\ \end{bmatrix} \tag{5} $$

$$ C=\begin{bmatrix} cos\theta & -sin\theta & 1\\ cos(\theta-120^\circ) & -sin(\theta-120^\circ) & 1\\ cos(\theta+120^\circ) & -sin(\theta+120^\circ) & 1\\ \end{bmatrix}\tag{6} $$

$$ C^{-1}=\frac{2}{3}\begin{bmatrix} cos\theta & cos(\theta-120^\circ) & cos(\theta+120^\circ) \\ -sin\theta & -sin(\theta-120^\circ) & -sin(\theta+120^\circ)\\ \frac{1}{2} & \frac{1}{2} & \frac{1}{2}\\ \end{bmatrix}\tag{7} $$

License

本项目遵循 MIT License,详见 LICENSE 文件。

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