EV Grid-Discharge Communication for IEEE 1547 Compliance
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Solution Overview
Problem
Existing electric vehicles lack the capability to communicate effectively with electric utility companies to comply with industry standards for discharging power from their energy storage to the electrical power grid, such as IEEE 1547-2018, which is necessary for vehicle-to-grid energy transfers.
Innovation Solution
Equipping electric vehicles with on-board communication hardware and processors to facilitate direct communication with electric utility companies, using protocols that meet interoperability requirements, including an inverter to convert DC power to AC power for grid discharge, and utilizing Ethernet communication systems for compliance with IEEE 1547-2018 standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electric vehicles are equipped with communication hardware and processors to enable vehicle-to-grid communication, then the ability to comply with utility interconnection requirements is improved, but the device complexity increases
Solution Approach 1:
The communication hardware and processors are designed to handle multiple functions: they enable compliance communication with utility companies, support power discharge operations, and manage interoperability protocols. This multi-functionality justifies the added complexity by consolidating several necessary functions into integrated components.
Solution Approach 2:
The communication hardware acts as an intermediary between the electric vehicle's power system and the utility company's grid system, enabling standardized interaction through protocols like IEEE 1547-2018. This intermediary component facilitates reliable compliance communication while managing the complexity through standardized interfaces.
2Adaptability or versatility
If an inverter is added to convert DC power to AC power for grid discharge, then the capability to send power to the electrical grid is improved, but the device complexity increases
Solution Approach 1:
The inverter is designed to perform multiple functions: converting DC to AC for grid discharge, managing power flow bidirectionally, and supporting both charging and discharging operations. This multi-functionality enables the vehicle to serve as both a load and a distributed energy resource, justifying the added complexity.
Solution Approach 2:
The inverter system is integrated with the vehicle's existing powertrain and energy storage systems, combining multiple power management functions into a unified system. This merging approach reduces overall system complexity by eliminating separate dedicated components for power conversion and management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables electric vehicles to operate as distributed energy resources, allowing seamless power discharge to the grid while adhering to utility interconnection requirements, enhancing grid stability and efficiency.
Implementation Method 1
a device to receive power to charge the energy storage and to send power from the energy storage to an electrical power grid, where the device includes an inverter to convert DC power from the energy storage to AC power to be sent to the electrical power grid
Data Source
AI summary
In some embodiments, an electric vehicle (EV) comprises energy storage; a device to receive power to charge the energy storage and to send power from the energy storage to an electrical power grid, where the device includes an inverter to convert DC power from the energy storage to AC power to be sent into the electrical power grid; on-board communication hardware; and one or more processors to send and receive communications, using the communication hardware and according to interoperability requirements of the electric utility company, related to discharging power from the energy storage to the electrical power grid.