1.首先取一组电机参数:
- 定子电阻:11.421欧
- 转子电阻:7.553欧
- 漏感抗:42.90 毫亨
- 互感抗:553.9毫亨
- 空载电流:1.17安。
2. 利用T型等效电路公式绘图:
import numpy as np
import matplotlib.pyplot as plt
# 设置已知参数值
im = 1.17
rm = 11.421
lm = 42.90e-3
r2 = 7.553
l2 = 553.9e-3
freq_in = 50
# 设置频率值范围和步长
s = np.linspace(0, 0.2, 1000)
# 计算并绘制曲线
curr_in = (im + im*(rm + lm*freq_in*1j)/(r2 + l2*freq_in*1j + (1-s)/s*r2))*np.sqrt(3)
plt.plot(np.abs(curr_in), s)
plt.xlabel('Absolute value of curr_in')
plt.ylabel('Power out')
plt.title('s of rated power is 5.5%, the max Y-axis = 20%(about 4 multiply of SoRP)')
# 绘制横线
horiz_line = plt.axhline(y=0.055, color='r', linestyle='--', label='"s" == rated power of engine')
# 添加图例
plt.legend()
plt.show()
3.输出curr->s图: