Hybrid Propulsion Power Allocation Between ESS and Generators
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hybrid propulsion systems face challenges in efficiently managing power between electrical energy storage systems (ESS) and electrical generators to optimize vehicle propulsion.
Innovation Solution
A power management method that determines the optimal sourcing of power from ESS and electrical generators based on a received power demand and predetermined output limits, ensuring efficient propulsion by adjusting power outputs on a direct current (DC) electrical distribution bus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power is sourced primarily from ESS, then vehicle propulsion efficiency is improved during low-demand periods, but ESS output capacity is limited and cannot meet high power demands alone
Solution Approach 1:
The patent combines multiple power sources (ESS and generators) into a unified power management system that dynamically allocates power demands between them based on real-time conditions, allowing the system to leverage both the efficiency of ESS and the high power capacity of generators
2Power
If power is sourced primarily from generators, then sufficient power output is ensured for high-demand situations, but energy conversion losses increase and system complexity rises
Solution Approach 1:
The system dynamically changes operational parameters by adjusting the power contribution ratio between ESS and generators based on real-time power demand levels, allowing optimal energy utilization across different operating conditions and minimizing conversion losses
3Loss of energy
If dynamic power allocation between ESS and generators is implemented, then optimal energy utilization is achieved, but control system complexity increases
Solution Approach 1:
The power management system incorporates feedback mechanisms that continuously monitor power demand, ESS state of charge, and generator output, automatically adjusting power allocation decisions based on real-time system conditions to optimize energy utilization without requiring overly complex manual control
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
This method enables efficient power management in hybrid propulsion systems, ensuring optimal use of ESS and electrical generators to meet propulsion demands while adhering to predetermined output limits.
Implementation Method 1
one or more electrical generators configured to convert mechanical energy to electrical energy
Data Source
AI summary
An example method of managing power in a hybrid propulsion system includes receiving, by one or more processors, a power demand that specifies an amount of power to be used to propel a vehicle that includes an electrical energy storage system (ESS) and one or more electrical generators, wherein the one or more electrical generators are configured to convert mechanical energy to electrical energy; determining, based on the power demand and a predetermined ESS output limit, a first amount of power to be sourced from the ESS and a second amount of power to be sourced from the one or more generators; and causing, by the one or more processors, the ESS to output the first amount of power onto a direct current (DC) electrical distribution bus and the one or more generators to output the second amount of power onto the DC electrical distribution bus.