# Hydrogen and Battery Based Energy Storage System (ESS) for Future DC Microgrids

**Authors:** Massiagbe Diabate, Timothy Vriend, Harish S Krishnamoorthy, Jian Shi  
**arXiv:** [2406.00597](https://arxiv.org/abs/2406.00597)  
**Date:** 2024-06-02  
**Summary page:** https://www.summarizepaper.com/en/paper/2406.00597v1/

## Key points

- Hybrid energy storage system (ESS) combining hydrogen and battery technologies
- Aims to provide stable energy supply over an extended period while managing sudden demands and surpluses in microgrids
- Novel system architecture with isolated DC-DC converter for clean hydrogen production through electrolyzer
- Hydrogen produced is pressurized, stored in tanks, and used as fuel for fuel cells to generate electricity
- Electricity generated fed back into the grid using a DC-DC boost converter
- Demonstrated functionality through a Simulink model with 1 kV DC bus voltage showcasing power conversion, electrolysis process, storage tank operation, and fuel cell behavior
- Polymer electrolyte membrane (PEM) technology identified as primary choice for electrolyzers and fuel cells due to economic viability and efficiency considerations
- Combining hydrogen with traditional battery systems offers effective solution for future DC microgrids facing challenges related to renewable energy integration.

## Summary

Title: Hydrogen and Battery Based Energy Storage System (ESS) for Future DC Microgrids

Abstract
, , and  are key components in the transition towards a more sustainable and renewable energy future. This paper presents a comprehensive study on a hybrid energy storage system (ESS) that combines both hydrogen and battery technologies to address the evolving needs of future grids with high renewable energy penetration. The proposed system aims to provide a stable energy supply over an extended period while effectively managing sudden demands and surpluses within the microgrid. A novel system architecture is introduced, which utilizes an isolated DC-DC converter to facilitate clean hydrogen production through an electrolyzer. The produced hydrogen is then pressurized and stored in tanks for later use, serving as a crucial input for fuel cells that regulate and transform it into electricity. The generated electricity is subsequently fed back into the grid using a DC-DC boost converter. To demonstrate its functionality, a Simulink model with a 1 kV DC bus voltage is utilized, showcasing various aspects of power conversion, electrolysis process, storage tank operation, and fuel cell behavior based on dynamic changes in load demand and surplus power within the microgrid. Polymer electrolyte membrane (PEM) technology is identified as the primary choice for both electrolyzers and fuel cells due to its economic viability and efficiency considerations. Overall, this paper highlights how combining  with traditional battery systems can offer an effective solution for future DC microgrids facing challenges related to  and .