A novel disturbance attenuation controller with L2 gain for nonlinear lead-acid energy storage battery

摘要

With the technology progress of energy storage equipment and the prices falling of energy storage devices, more and more energy storage devices are widely used. In order to make full use of the capacity of energy storage devices, accurate charge-discharge control research for the energy storage device therefore is of great importance. However, many of the energy storage device has strong nonlinear characteristics. The past control laws are the study of control laws mostly based on linearizing the nonlinear model. In the approximate linearization process of the nonlinear device a lot of detail features will lose. The recharge device for energy storage device itself is unable to achieve precise charging and recharging control in the past, this problem cannot be solved, part capacity of the energy storage device has to be sacrificed. But now a lot of energy storage device charge and discharge through the power electronic equipment, which make accurate charge and discharge control of energy storage device become true. It is started from of a kind of third order nonlinear model of lead-acid energy storage battery, then the mathematics method of solving the problem of nonlinear system L2 gain disturbance attenuation has been used to deduce a kind of disturbance attenuation controller with L2 gain for nonlinear lead-acid energy storage battery.