Abstract
The Energy Internet is an inevitable trend of the development of electric power system in the future. With the development of microgrids and distributed generation (DG), the structure and operation mode of power systems are gradually changing. Energy routers are considered as key technology equipment for the development of the Energy Internet. This paper mainly studies the control of the LAN-level energy router, and discusses the structure and components of the energy router. For better control of the power transmission of an energy router, the energy routing control strategy for an integrated microgrid, including photovoltaic (PV) energy, battery-energy storage and electric vehicles (EVs) is studied. The front stage DC/DC converter of the PV system uses maximum power point tracking (MPPT) control. The constant current control is used by the bidirectional DC/DC converter of the battery-energy storage system and the EV system when they discharge. The DC/AC inverters adopt constant reactive power and constant DC voltage control. Constant current constant voltage control is adopted when an EV is charged. The control strategy model is simulated by Simulink, and the simulation results verify the feasibility and effectiveness of the proposed control strategy. The DG could generate reactive power according to the system instructions and ensure the stable output of the DC voltage of the energy router.
Highlights
In the third industrial revolution, Rifkin, an American economist, proposes the concept of EnergyInternet and mainly describes the application of the Energy Internet in the future [1,2], which has drawn worldwide attention and studies [3,4]
A three-layer tree architecture of an control strategy based on the Dijkstra algorithm method for the management and coordination control intelligent distributed energy network based on the multi-energy router concept is drawn in [20], of power flow in energy routers was put forward
A complete simulation structure diagram of the energy routing control of the PV, battery-energy storage and electric vehicles (EVs) system is built under Simulink
Summary
In the third industrial revolution, Rifkin, an American economist, proposes the concept of Energy. The Energy Internet is a new generation of intelligent network, having electric power information as its core. Energies 2019, 12, 302 manages and dispatches the electric energy in the corresponding region based on a “Digital Power. All components are connected through power grid is regarded as the backbone WAN and the microgrid as the local area network LAN. Energy router research is still a primary stage.The. Theaim aim of of this study thethe control of a of LAN-level energy research is still in ainprimary stage. Thispaper paperisistoto study control a LAN-level energy router. DG could generate reactive power according to the system instructions and ensure the stable output of the DC voltage of the energy router. The structure paper is as follows: in Section 2, related work is presented.
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