SMES_BESS 储能变流器

  储能系统在微电网的运行控制中起到了重要的作用， 研究了超导磁储能和蓄电池储能系统的储能变流器在微电 网中的控制策略。基于比例积分(proportional-integral，PI) 控制的储能变流器已广泛应用于微电网中，以实现双向的功 率传输。然而，由于储能变流器具有高度的非线性和耦合性， PI 控制器无法实现令人满意的鲁棒性。因此提出了一种基 于互联和阻尼配置方法的能量成型控制策略，用于改善微电 网中混合储能系统储能变流器的鲁棒性。(Energy storage system plays an important role in operation and control of microgrid. Control strategies of converters of superconducting magnetic energy storage (SMES) system/battery hybrid energy storage system (HESS) in microgrid are studied in this paper. Energy storage converters are widely used in microgrid for achieving bidirectional power transmission based on proportional-integral (PI) method. However, PI controllers are not satisfactory in robustness due to high nonlinearity and coupling characteristics. Thus, this paper proposes an energy shaping (ES) control based on interconnection and damping assignment (IDA) to improve robustness of HESS converters in microgrid. Design process includes three steps: construction of port-controlled Hamiltonian (PCH) model, setting of desirable equilibrium and solution of energy matching equation.)

SMES_BESS 储能变流器.pdf, 655483 , 2018-10-17