Integrated Energy Control System for Whole Home Backup

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Solution Overview

Problem

Existing energy control systems for solar electric systems lack flexibility in energy system sizing and load management, often requiring multiple subpanels and limited controls, and do not offer whole home backup with integrated breaker spaces and metering.

Innovation Solution

The development of an energy control system that includes a microgrid interconnection device, remotely-controllable electrical switches, and a controller to manage energy distribution between a grid, backup power sources, and loads, allowing for whole home and partial home backup with integrated metering and breaker spaces, and enabling optimal AC storage pairing in backup mode.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing energy control systems use multiple subpanels for backup power distribution, then whole home backup capability is achieved, but device complexity and installation cost increase

Engineering Contradiction:
Improvewhole home backup capabilityVSAvoidmultiple subpanels required
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple subpanel functions into a single integrated energy control system that includes a main service panel, subpanel, and transfer switch assembly housed in one unit. This integration eliminates the need for separate subpanels while maintaining whole home backup capability through internal circuit breakers and transfer mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated energy control system performs multiple functions within a single device: it serves as the main service panel, subpanel, and transfer switch assembly simultaneously. The system can switch between utility power and backup power sources, distribute power to various loads, and provide whole home backup without requiring multiple specialized components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If existing systems require separate subpanels for generation and essential loads, then load management is achieved, but ease of installation deteriorates

Engineering Contradiction:
Improveload management capabilityVSAvoidinstallation simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent integrates the main service panel, subpanel, and transfer switch assembly into a single pre-assembled unit with all necessary components internally connected. This integration maintains sophisticated load management capabilities while dramatically simplifying installation by eliminating the need to wire multiple separate panels and transfer switches during installation.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If existing energy control systems provide limited controls, then device complexity is reduced, but adaptability to different energy management needs deteriorates

Engineering Contradiction:
Improvecontrol system simplicityVSAvoidenergy system sizing flexibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The integrated energy control system provides universal adaptability through programmable control capabilities that can accommodate various energy management strategies and system configurations. The system can be programmed to manage different load priorities, switch between various backup power sources, and adapt to different energy system sizing requirements without requiring additional hardware components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3726698A1Energy control system
Publication Date: 2020.10.21 SUNPOWER INC
  • EP3726698A1 patent drawingFigure 1~2A
  • EP3726698A1 patent drawingFigure 2B~3
  • EP3726698A1 patent drawingFigure 4A~4C

AI summary

The present disclosure provides a method for controlling an energy control system. The energy control system includes a grid interconnection (880), a backup load interconnection (870), a non-backup load interconnection, and a backup power interconnection (840). The method includes receiving electronic data from a plurality of backup loads. The method includes detecting a power outage at the grid interconnection electrically coupled to a utility grid. The method includes disconnecting the grid interconnection from the backup power interconnection, in which the backup power interconnection is electrically coupled to a backup power source. The method includes connecting a first set of the plurality of backup loads to the backup load interconnection, in which the backup load interconnection is electrically coupled to the backup power interconnection such that power is supplied from the backup power source to the first set of backup loads.