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A System of Bidirectional Power Routing Toward Multi-energy Management

Shiu Mochiyama, Ryo Takahashi, Yoshihiko Susuki, Tsutomu Wakabayashi, Takumi Tanaka, Toshinari Momose, Hideki Yamaguchi

TL;DR

The paper addresses the challenge of local multi-energy management by introducing a four-port, bidirectional line-switching power router that enables inter-house sharing of PV and batteries and integrates a community hydrogen system. The approach provides self-consumption benefits, enhances resilience through prioritized load paths, and enables traceability of electricity origin for renewable hydrogen production. Hardware-backed experimental demonstration confirms the router’s ability to mediate bidirectional power flows among three houses, supporting approximately $500 W$ exchanges and validating the concept. This work offers a practical pathway to community-scale energy sharing with traceability, bridging the gap between theoretical sharing economies and physical implementations for multi-energy systems.

Abstract

In this paper, we propose a system of bidirectional power routing for inter-house multi-energy management systems that utilize electricity and hydrogen as energy carriers. The key is to share private facilities such as photovoltaic panels and batteries among a group of houses along with a common hydrogen system. A power router of line switching type is introduced as a physical interface to realize the sharing economy between households. The proposed system offers a unique measure to address the urgent challenges of today's multi-energy system, namely increasing the renewables' self-consumption, enhancing the energy system's resilience, and providing traceability of hydrogen in terms of renewability certification. We also present an experimental demonstration under a simplified scenario using prototype hardware.

A System of Bidirectional Power Routing Toward Multi-energy Management

TL;DR

The paper addresses the challenge of local multi-energy management by introducing a four-port, bidirectional line-switching power router that enables inter-house sharing of PV and batteries and integrates a community hydrogen system. The approach provides self-consumption benefits, enhances resilience through prioritized load paths, and enables traceability of electricity origin for renewable hydrogen production. Hardware-backed experimental demonstration confirms the router’s ability to mediate bidirectional power flows among three houses, supporting approximately exchanges and validating the concept. This work offers a practical pathway to community-scale energy sharing with traceability, bridging the gap between theoretical sharing economies and physical implementations for multi-energy systems.

Abstract

In this paper, we propose a system of bidirectional power routing for inter-house multi-energy management systems that utilize electricity and hydrogen as energy carriers. The key is to share private facilities such as photovoltaic panels and batteries among a group of houses along with a common hydrogen system. A power router of line switching type is introduced as a physical interface to realize the sharing economy between households. The proposed system offers a unique measure to address the urgent challenges of today's multi-energy system, namely increasing the renewables' self-consumption, enhancing the energy system's resilience, and providing traceability of hydrogen in terms of renewability certification. We also present an experimental demonstration under a simplified scenario using prototype hardware.

Paper Structure

This paper contains 14 sections, 4 figures.

Table of Contents

  1. Introduction
  2. Challenge I: Increasing Self-consumption of Renewables
  3. Challenge II: Boosting up Resilience
  4. Challenge III: Tracing Electricity for Hydrogen Production
  5. Contributions of This Paper
  6. Literature Review
  7. Proposed Power Routing System
  8. Self-consumption of Renewables
  9. Resilience
  10. Traceability
  11. Experimental Verification
  12. Setups for Experiment
  13. Results and discussions
  14. Conclusions

Figures (4)

  • Figure 1: Example of the energy system for a group of $N$ houses and community-owned facilities.
  • Figure 2: Prototype power router. (a) Photo of overview. (b) Switching circuit. (c) Circuit of sensor units.
  • Figure 3: Experimental setups. (a) Mode A. (b) Mode B.
  • Figure 4: Results of the experiments. (a) Voltage and current of mode A. (b) Power of mode A. (c) Voltage and current of mode B. (d) Power of mode B.