Dual-PMSM Speed Synchronization Control Based on Sliding Mode Cross-Coupling Control
To reduce the speed synchronization error of the dual permanent magnet motors(PMSM)sys-tem during dynamic processes and disturbances,a method based on current reference switching and sliding mode cross-coupling control(SMCCC)is proposed.First,the system model under cross-coupling control(CCC)is established and the mechanism of CCC is analyzed.The capacity of CCC to reduce the speed synchronization error is proved by the frequency domain analysis,and the design method of CCC parameter is proposed;Then,a SMCCC method is proposed to reduce the convergence time of the speed synchroniza-tion error under the disturbances;Finally,current reference switching is applied to solve the unsatisfactory speed synchronization performance caused by the maximum current limitation in the dynamic process.The experimental results show that the current reference switching and SMCCC can make the speed synchroni-zation error converge faster under disturbances,and at the same time effectively reduce the speed synchroni-zation error in the dynamic process.
NETL
NSTL
万方数据
