标幺化模型下的感应电机转矩——转速特征曲线的验证，标幺化的转速范围为[0-2]，如仿真步长不为1/8e3，仿真前请调整-Under the per-unit model induction motor torque- speed characteristic curve verification, per unit of speed range [0-2], such as simulation step 1/8e3 simulation before adjustment