An Active Voltage Stabilizer for a DC Microgrid System

An Active Voltage Stabilizer for a DC Microgrid System

Blog Article

This paper analyzes the low-frequency stability challenges that exist in a complex DC microgrid (MG) system.The converters that belong to a DC MG are categorized into different groups based on their control approach.The small-signal model of the DC MG is presented, and the conditions for system stability are derived.In zwo off axis guider some DC MG applications, there is the possibility of installing off-the-shelf converters with little flexibility and access for controller auto-tuning.To tackle this, a hardware-based active voltage stabilizer solution is proposed to stabilize the DC MG.

The active stabilizer’s functionality, based on an isolated bidirectional DC-DC converter, is elucidated, and a suitable control strategy is proposed.The active stabilizer and its associated control configuration involve only local voltage sensing and are non-intrusive.A dual active bridge (DAB) converter-based active stabilizer is implemented, and hardware-based steady-state and transient experimental results from a DC MG test-bench are provided to validate the functionality and groovy mama ring effectiveness of the proposed active stabilizer.