A Hierarchical Fuzzy Coordinated Control Method for DC Microgrid
A DC microgrid and coordinated control technology, which is applied in collectors, wind power generation, electric vehicles, etc., can solve the problems of layered fuzzy DC microgrid, slow dynamic response speed of converter control performance, and poor anti-disturbance performance. Improve the dynamic response speed and anti-disturbance performance, improve the operating life cycle, and overcome the effects of large errors and large gains
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] like figure 1 As shown, the present invention adopts upper and lower control methods for the DC microgrid, wherein the upper control method is a fuzzy energy management method, and the bottom layer is the control strategy of each unit interface converter itself, and each unit interface converter adopts fuzzy self-adaptive PI adjustment The converter realizes the control of the interface converter itself of each unit of the DC microgrid.
[0019] The specific steps of the coordinated control method of the present invention are as follows:
[0020] (1) Based on the units contained in the DC microgrid, the operating modes of the DC microgrid are divided according to the constraints of the DC bus voltage and the state of charge of the battery, and the control strategies for the interface converters of each unit under different operating mod...
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