Photovoltaic generation is one of the most important microsources in microgrid

but it is susceptible to natural climate. The output power is fluctuant

random

intermittent

difficult to control

and energy storage devices have to be equipped to restrain power fluctuations. So the power control methods in microgrid are badly in need of study. Based on the dynamic impedance matching

combined with the center difference method

a method of photovoltaic maximum power point tracking self-optimizing control system is provided. And based on dynamic impedance matching

a new method of the power coordinated control of photovoltaic/energy-storage system in microgrid under the photovoltaic maximum power point tracking condition is proposed

which achieve power coordinated control of photovoltaic and energy storage in microgrid. Finally

the simulation experiment proves the correctness and feasibility of the proposed control method.