HVDC Energy Flow Manager for Concurrent EV Charging and Home Loads
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Solution Overview
Problem
Existing home energy systems struggle to efficiently manage and supply the high power demands of electric vehicles and high-power electrical appliances, often leading to capacity limitations and the need for staggered charging times, while solar energy production is intermittent and unavailable at night, necessitating intelligent energy storage and management solutions.
Innovation Solution
A universal, modular, and scalable energy management system with integrated electronics that optimizes energy harvesting and distribution using High Voltage Direct Current (HVDC) to concurrently supply and manage multiple loads, including DC Fast Charging for electric vehicles and appliances, utilizing a universal energy flow manager with a housing, energy storage, power electronics module, and a HVDC Bus to aggregate power from various sources and distribute it to loads based on availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional home energy systems are used to supply electric vehicles and high-power appliances, then the system can operate with standard electrical infrastructure, but the system cannot meet high power demands and requires staggered charging times
Solution Approach 1:
The system segments power delivery into multiple independent DC fast charging channels, each capable of delivering high power to different loads simultaneously. The power electronics module is divided into multiple conversion channels that can operate independently to charge multiple electric vehicles or power high-power appliances concurrently, eliminating the need for staggered charging.
Solution Approach 2:
The system changes the electrical parameters by implementing High Voltage Direct Current (HVDC) distribution instead of traditional Alternating Current (AC). This parameter change enables higher power transmission capacity and allows direct DC fast charging of electric vehicles without AC-DC conversion at each charging point, significantly increasing power supply capacity and charging speed.
2Adaptability or versatility
If solar panels are used as energy source, then renewable energy adoption is promoted, but energy production is intermittent and unavailable at night
Solution Approach 1:
The system performs preliminary action by storing excess solar energy in an energy storage device (battery) during periods when solar production is available. This stored energy is then discharged during periods when solar energy is unavailable, such as at night or during cloudy conditions, ensuring continuous energy supply and extending the effective duration of renewable energy availability.
Solution Approach 2:
The energy storage device acts as an intermediary between the solar panels and the loads. It buffers the intermittent nature of solar energy production, absorbing excess energy when production exceeds demand and releasing energy when production is insufficient, thereby decoupling the intermittency of solar generation from the continuous demand of electric vehicles and appliances.
3Adaptability or versatility
If multiple energy sources and loads are managed concurrently, then energy management capability is improved, but system complexity increases
Solution Approach 1:
The system implements a universal energy flow manager that can handle multiple types of energy sources (solar panels, grid, energy storage) and multiple types of loads (electric vehicles, high-power appliances) through a single integrated platform. This universal controller provides multi-functional capability to manage power flow, charging, and energy optimization across diverse components, improving energy management capability while avoiding the need for separate control systems for each source-load pair.
Solution Approach 2:
The system merges multiple energy sources and multiple loads into a single integrated HVDC distribution network. By combining all energy sources at the input side and all loads at the output side of a centralized power electronics module, the system simplifies the overall architecture compared to having separate AC-DC conversion and control systems for each individual charging point or appliance.
4Ease of operation
If AC to DC conversion is performed at each charging point, then compatibility with grid infrastructure is maintained, but energy loss and conversion time increase
Solution Approach 1:
The system extracts the AC-DC conversion function from individual charging points and consolidates it into a single centralized power electronics module at the energy distribution center. This extraction eliminates redundant AC-DC conversion stages at each charging location, reducing total conversion losses and minimizing energy waste while maintaining grid compatibility through the single conversion interface.
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
The system enables simultaneous charging of multiple electric vehicles and high-power appliances, reduces dependence on utility services, optimizes energy use, and provides smart home safety measures, while promoting renewable energy adoption by eliminating complexity and cost through intelligent energy management and distribution.
Implementation Method 1
a power electronics module disposed in the housing and configured to convert and manage power
Implementation Method 2
an energy storage device disposed in the housing and configured to provide on-board energy
Implementation Method 3
solar panels
Data Source
AI summary
An energy management system including a universal energy flow manager that has a housing, an energy storage device disposed in the housing, a power electronics module disposed in the housing and adapted to convert and manage power and a connections interface. It also includes distribution and communications module with a HVDC Bus (High-Voltage Direct Current Bus) having variable power limits that powers an entire load requirement of one or more coupled electrical loads up to a defined power limit determined by an aggregation of power from one or more coupled energy sources. The one or more coupled electrical loads and the one or more coupled energy sources are external to the universal energy flow manager and connect to the HVDC Bus through the connections interface.