| Permanent Magnet Synchronous Motor(PMSM)and Permanent Magnet Synchronous Wind Generator(PMSG),as multivariable and strongly coupled nonlinear systems,have rich dynamic behaviors such as bifurcation and chaos.Due to these nonlinear behaviors,PMSM and PMSG are prone to instability in actual working environment conditions,thus affecting the stability of the motor drive system.In addition,with the improvement of industrial demand and automation,the interconnection of multiple motors into a network system has become an inevitable trend.In the multi-motor network,the complexity of the system increases with the increase of the nodes of the motor network,which brings more challenges to the stable synchronous of the motor drive system while improving the production efficiency.Therefore,the research on synchronous control of complex motor systems and networks has extremely important theoretical guiding significance and application value in practical application fields.In this paper,PMSM and PMSG are taken as research objects,multiple motor network systems and network models are firstly constructed,and chaos synchronization control in complex multi-motor systems and networks is analyzed based on complex network theory.The specific research work of this paper is as follows:The dynamics model of motor is established.Taking PMSM and PMSG as research objects,the dynamic models of PMSM and PMSG complex motor systems are established,and the parameter thresholds for bifurcation and chaos are analyzed and determined.The synchronization characteristics and theoretical knowledge of common complex networks are briefly introduced to provide theoretical basis for the following chapters.The analysis and control of PMSM chaotic oscillation synchronization interrupt are studied.Based on a conventional diffusive coupling link,the vibration characteristics of the PMSM system network disturbed by parameters are studied by establishing a directed cross-coupling link.It is analyzed and proved that unidirectional cross-coupling has synchronous robustness to parameter disturbances of PMSM system network.Through the verification of PMSM system of multi-node network,cross-coupling plays an important role in global stable synchronization of multi-node motor network.Remote synchronization of power generation systems with large-scale inductive loads is studied.Taking PMSG as the power generation node and PMSM as the actual inductive load,a new mathematical model of power generation system with network coupling is established,and the remote synchronization characteristics of inductive loads of power generation systems with different topology network structures,including star,multi-layer network structure,random network structure,are analyzed,and the numerical simulation is carried out.Research shows that inductive load can realize remote chaos synchronization through relay action of generator.The research results are of great significance to ensure the synchronization and stability of the power generation system.The distributed synchronous control of multi-motor systems and networks is studied.In the coupling network of multiple PMSM systems,several symmetric nodes are constructed by adding or removing designated connecting edges,and partial chaos synchronization can be realized by using distributed control.Theoretical analysis and experimental simulation verify the feasibility of the method.Compared with global network synchronization,distributed synchronization control requires less coupling strength and better synchronization. |
PDF Full Text Request