Demand Side Management Module for Multi-Utility Peak Shaving
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Solution Overview
Problem
Current energy management systems for household appliances lack effective peak demand reduction methods, particularly during high energy usage periods, and face challenges in communicating with utilities using varying communication protocols, leading to inefficiencies and increased costs.
Innovation Solution
A low-cost system utilizing an ambient light sensor and timer to determine peak shaving modes in appliances like refrigerators, combined with a Demand Side Management Module that communicates with utilities using multiple protocols, allowing for flexible energy management and load shedding strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a controller switches the actual energy supply to the appliance on and off, then peak demand is reduced, but there is no active control beyond mere on/off switching
Solution Approach 1:
The system uses ambient light sensors and timers to automatically detect peak demand periods and trigger peak shaving modes without requiring user intervention or complex control inputs. The appliance self-regulates its energy consumption based on environmental conditions and utility rate structures.
Solution Approach 2:
The system changes operational parameters (temperature setpoints, compressor cycling patterns, defrost timing) dynamically based on the detected peak demand conditions. Instead of simple on/off switching, the controller adjusts multiple operational parameters to reduce load while maintaining acceptable performance.
2Adaptability or versatility
If different communication methods and protocols are used by utilities, then appliance compatibility is improved, but device complexity increases
Solution Approach 1:
The demand side management module is designed with multi-functionality to support multiple communication protocols (PLC, RF, Wi-Fi, cellular) and utility communication methods within a single device. This universal approach allows the same module to interface with different utility companies using their preferred communication standards without requiring multiple specialized modules.
Solution Approach 2:
The DSM module acts as an intermediary between the utility company and the appliance controller. It translates and adapts communication from various utility protocols into standardized commands that the appliance can understand, simplifying the interface requirements for the appliance itself while maintaining compatibility with diverse utility systems.
3Ease of manufacture
If peak shaving modes are implemented without additional components, then cost is reduced, but measurement precision deteriorates
Solution Approach 1:
The system uses existing components with alternative functions - ambient light sensors originally designed for interior lighting control and timers originally for cycle timing are repurposed to detect peak demand periods. This copying approach allows the system to perform new functions (peak demand detection) using existing hardware without adding expensive specialized sensors or measurement devices.
Solution Approach 2:
The system leverages environmental conditions (ambient light levels) that naturally correlate with peak demand periods to trigger peak shaving modes. Rather than using expensive specialized sensors, the system self-services by utilizing freely available environmental data that indirectly indicates when peak demand occurs.
Data Source
AI summary
A household appliance system and method include an appliance control system having a common appliance interface provided on an appliance and a demand side management module connected to the common appliance interface. The module corresponds to one select utility of a plurality of utilities and is adapted to communicate with the one select utility of the plurality of utilities. The appliance control system operates the appliance based on communications with the one select utility through the module.