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Dynamic Modeling and Control of Electromechanical Coupling for Mechanical Elastic Energy Storage System

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  • Yang Yu
  • Zengqiang Mi

Abstract

The structural scheme of mechanical elastic energy storage (MEES) system served by permanent magnet synchronous motor (PMSM) and bidirectional converters is designed. The aim of the research is to model and control the complex electromechanical system. The mechanical device of the complex system is considered as a node in generalized coordinate system, the terse nonlinear dynamic model of electromechanical coupling for the electromechanical system is constructed through Lagrange-Maxwell energy method, and the detailed deduction of the mathematical model is presented in the paper. The theory of direct feedback linearization (DFL) is applied to decouple the nonlinear dynamic model and convert the developed model from nonlinear to linear. The optimal control theory is utilized to accomplish speed tracking control for the linearized system. The simulation results in three different cases show that the proposed nonlinear dynamic model of MEES system is correct; the designed algorithm has a better control performance in contrast with the conventional PI control.

Suggested Citation

  • Yang Yu & Zengqiang Mi, 2013. "Dynamic Modeling and Control of Electromechanical Coupling for Mechanical Elastic Energy Storage System," Journal of Applied Mathematics, Hindawi, vol. 2013, pages 1-11, October.
    • Handle: RePEc:hin:jnljam:603063
    DOI: 10.1155/2013/603063
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