基于MRAS的内置式永磁同步电机无传感器控制

Sensorless Control of Interior Permanent Magnet Synchronous Motor Based on MRAS

针对内置式永磁同步电机,将模型参考自适应法用以实现转子速度与位置估算。完成基于内置式永磁同步电机的模型参考自适应系统理论分析,建立参考模型、可调模型及自适应律,证明在交、直轴电感不相等情况下,同样可以利用模型参考自适应系统的自适应律实现转速估算。对该系统进行仿真分析及实验验证,证明该模型参考自适应系统对内置式永磁同步电机转速与位置估算的可行性。

Aiming at the interior permanent magnet synchronous motor（ IPMSM）,the realization method of the rotor speed and position estimation based on model reference adaptive system（ MRAS） was presented. In this paper,the theoretical analysis on MRAS for IPMSM was accomplished. The reference model,the adjustable model and self- adaptive law were established. Then the self- adaptive law of MRAS can be used to estimate speed when d axis inductance is not equal to q axis inductance was proved. Simulation analysis and experiment results prove the feasibility of speed and position estimation based on MRAS for IPMSM.