Photovoltaic-storage DC microgrid simulink

What is integrated standalone dc microgrid?

The integrated standalone DC microgrid is modeled, which contains PV, hybrid energy storage system EV charging. For the PV power generation unit, an MPPT control based on a variable step perturbation observation method is proposed to increase the tracking speed at the maximum power point and reduce the power oscillation during the tracking process.

Can photovoltaic and electric vehicles charge in integrated DC microgrids?

The power of photovoltaic (PV) and electric vehicles (EV) charging in integrated standalone DC microgrids is uncertain. If no suitable control strategy is adopted, the power variation will significantly fluctuate in DC bus voltage and reduce the system’s stability.

How energy storage unit regulates power balance in integrated dc microgrid?

The energy storage unit regulates the system power balance in the integrated DC microgrid. When the output power of the PV generation unit is larger than the absorbed power of the load, the energy storage unit absorbs the energy in the system by charging; conversely, the energy storage unit provides energy to the system by discharging.

How does a dc microgrid control a bus voltage?

When the system power changes, the bus voltage will also change. An effective control strategy for the energy storage unit in the microgrid is needed to stabilize the bus voltage within a specific range. The DC microgrid shown in Fig. 1 contains two different energy storage devices, supercapacitors and batteries.

What are the performance parameters of integrated dc microgrid simulation model?

In the integrated DC microgrid simulation model, the first power change occurs at t = 2 s, and the second power change occurs at t = 4 s. The main performance parameters of the system under the action of the two droop control methods are listed in Table 3 to reflect the effectiveness of the improved droop control more intuitively. Fig. 21.

Can MATLAB/Simulink coordination control strategy improve the stability of DC microgrids?

The proposed coordination control strategy is applied to the integrated standalone DC microgrid model built by MATLAB/Simulink. The simulation results show that the proposed coordination control strategy can not only effectively improve the stability of the DC microgrid system but also reduce the capacity redundancy of the energy storage device. 1.