Energy storage regulates bus voltage

Can a grid-connected converter regulate bus voltage and power distribution?

This research aims to efficiently regulate bus voltage and power distribution within a grid-connected converter (GCC) operating in a hybrid microgrid framework using a unified control technique. The microgrid configuration comprises loads, grid-connected converters, solar modules, energy storage devices, and wind turbines.

How does a secondary layer energy storage device ensure voltage stability?

In the secondary layer, the energy storage device ensures bus voltage stability by providing a continuous power supply to local loads, even under grid outage condition. For effective analysis, MATLAB-based implementation of the proposed control strategy is compared to several competing controllers.

How does a hysteresis comparator control DC bus voltage?

This method employs a hysteresis comparator to regulate DC bus voltage within specified limits [17, 18, 19]. While similar to a traditional voltage controller, accurately setting parameters for optimal performance can be challenging. Alternative strategies indirectly control the DC bus voltage by balancing charge and power.

What is the difference between DC bus voltage and AC microgrid frequency?

The common DC bus voltage reflects the overall DC system stability, while the DC microgrid voltages indicate the performance of individual DC sections. AC microgrid frequency is a measure of power balance and impacts AC system stability.

How does a power converter control work?

The proposed control technique is structured in two layers for effective management. In the primary layer, the grid-connected converter regulates bus voltage, while the active rectifier and boost converter control ensures optimal power extraction from the energy sources.

Is voltage stability control a nonlinear control strategy for DC mg?

Previous studies in the literature have investigated the voltage stability control in HMG using various techniques in [21, 22, 23, 24, 25, 26, 27, 28, 29, 30]. Mehdi et al. investigated a nonlinear control strategies for DC MG with renewable energy and storage. The DCMG combines the wind, PV, fuel cell, battery, and ultracapacitor.