A COLLABORATIVE CONTROL STRATEGY OF FOUR-PORT ENERGY ROUTER

Yuan Xingyu; Su Shi; Li Yaohua; Lu Hai; Ma Fujun; Lin Liheng

doi:10.19912/j.0254-0096.tynxb.2020-0713

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (5) : 82-89. DOI: 10.19912/j.0254-0096.tynxb.2020-0713

A COLLABORATIVE CONTROL STRATEGY OF FOUR-PORT ENERGY ROUTER

Yuan Xingyu¹, Su Shi¹, Li Yaohua², Lu Hai¹, Ma Fujun³, Lin Liheng³

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Abstract

Aiming at the four-port energy router studied, the topology of the energy router is analyzed, then the control method of each port is proposed according to the functional requirements of system. The power grid port consists of a T-type three-level topological structure. The current closed-loop vector control is adopted to realize the voltage control of the DC bus. The port of AC source port consists of VSR topology, and the power of AC source unit can be adjusted flexibly by PQ control. The photovoltaic cell port consists of boost circuit, which adopts the control strategy of maximum power point tracking （MPPT） and constant voltage control（CVC）. The energy storage port consists of cascaded Buck-Boost circuit, which adopts constant current control. Thus, a four-port collaborative control strategy is proposed, which is divided into multi-working modes according to the state of distributed energy. The working modes are switching by the DC-bus voltage fluctuation, the SOC of energy storage unit and other state data. Finally, a simulation model of energy router is built based on Matlab to verify the feasibility of modal switching.

Key words

energy internet / multi-port power router / collaborative control / energy storage / mode switching

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Yuan Xingyu, Su Shi, Li Yaohua, Lu Hai, Ma Fujun, Lin Liheng. A COLLABORATIVE CONTROL STRATEGY OF FOUR-PORT ENERGY ROUTER[J]. Acta Energiae Solaris Sinica. 2022, 43(5): 82-89 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0713

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