The study and modeling of multi-phase PMSM variety speed system with high fault-tolerant

The general methods of analysis and study for multi-phase permanent magnet synchronous motor (PMSM) variety speed system based on the vector space decomposition theory are discussed in this paper. Furthermore, the reliability of the system is discussed and a fault-tolerant compensation strategy purposed forming the revolving magnetic field in order to solve the system occurred familiar faults is also introduced, thereby improve consumedly the ability of fault-tolerant. The essential conditions restricted for the broken-down system work are also analysis, so that preparing much more to optimize compensation strategies. Simulation and experimental results show that the system can achieve preferable characteristics. Simulation results show that the model based on the proposed method is scientific and available, and the experimental results carried out on a 5 kW six-phase disk PMSM and a TMS320F2407 DSP are given and discussed.