Vsg module cannot store energy

What is a distributed virtual synchronous generator (VSG) control method?

In this paper, a distributed virtual synchronous generator (VSG) control method for a battery energy storage system (BESS) with a cascaded H-bridge converter in a grid-connected mode is proposed. The VSG is developed without communication dependence, and state-of-charge (SOC) balancing control is achieved using the distributed average algorithm.

How can a dual-module VSG control strategy be improved?

Thus, an improved dual-module VSG control strategy is proposed in this paper to suppress the negative sequence component of the output current caused by unbalanced PCC voltage, so that the inverter can output a three-phase balanced high-quality current.

Does a battery energy storage system support renewable nergy integration?

Battery energy storage systems play an essential role in renewable nergy integration. In this paper, a distributed virtual synchronous generator (VSG) control method for a battery energy torage system (BESS) with a cascaded H-bridge converter in a grid-connected mode is proposed.

How does a VSG control system work?

This control strategy first separates the positive and negative sequence powers through filters, and then controls the positive and negative sequence powers, respectively, through dual VSG modules. This strategy avoids the interference of the double line-frequency power generated by the coupling of positive and negative sequence components.

Should energy storage be combined with Modular Multilevel Converter (MMC)?

Therefore, it is necessary to combine energy storage with modular multilevel converter (MMC) to fluctuate power suppression and use virtual synchronous generator (VSG) control instead of vector control to improve its support ability for the grid [4, 5].

How does a dual-module VSG work?

The DC side of the VSG is connected to the DC source. The AC side of the VSG feeds the power to the grid emulator. A DSP TMS320F28379D is used to control the VSG. The algorithm is programmed and loaded into the DSP of experimental platform to verify the effect of the proposed dual-module control strategy.