摘要
在电机动态模型的基础上，推导了基于改进节点法的异步电机仿真模型，实现了对电力电子电机传动系统整体进行仿真。按照改进节点法的要求，异步电机采用α－β坐标系下的动态模型，使用梯形法求解微分方程，经过离散化和线性化，得出异步电机作为一个电路元件对电路矩阵方程的贡献。该模型能对各种不同结构、不同开关模式的逆变器驱动的异步电机传动系统进行仿真，适用于电机的不同运行模式。通过对异步电机启动及非对称运行的仿真验证了模型的正确性。
Simulation of power electronic motor drive system by modified nodal method is realized, and a simulation model of induction motor is presented on the basis of the Park equation. The dynamic model of induction motor under α β reference frame is approximated by its associated discrete circuit model with the trapezoidal algorithm, after linearized using the Neoton Rapson algorithm, the contribution of induction motor model to the circuit's nodal equation matrix is calculated. This model makes it possible to treat the complete power electronic main circuit and motor system together, and it is suitable for analyzing any induction motor drive circuit configurations with arbitrary conduction patterns. This model is verified by simulation results.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第3期8-11,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家攀登计划
