eVTOL Power Distribution Redundancy With Backup Battery Switching
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Solution Overview
Problem
eVTOL aircrafts face challenges in maintaining power supply during electrical component failures, which can lead to malfunctions and emergency situations.
Innovation Solution
A power generation and distribution system with multiple generators, junction boxes, motors, and backup batteries, featuring redundant paths and solid-state switches to ensure continuous power supply even in the event of component failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple generators and backup batteries are added to ensure continuous power supply during failures, then reliability is improved, but device complexity increases
Solution Approach 1:
The power system is divided into multiple independent generators (first generator, second generator) and separate backup battery systems. Each generator can independently power specific motors, and backup batteries are segmented into first and second backup batteries that can independently provide power to different motors, allowing modular redundancy without complete system interdependence
Solution Approach 2:
Backup batteries are pre-configured and charged in advance to provide immediate power support when generators fail. The system includes pre-arranged power pathways through junction boxes that can instantly switch to backup battery power without delay, cushioning against the impact of generator failure
2Reliability
If redundant power paths with multiple junction boxes are implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
Junction boxes are designed with multi-functional capability to handle multiple power sources and distribution paths. Each junction box can receive power from generators or backup batteries and distribute to multiple motors, serving universal power routing functions that reduce the need for dedicated switching equipment for each failure scenario
Solution Approach 2:
The junction boxes incorporate dynamically controllable contactors that can switch between open and closed positions based on real-time system conditions. This dynamic switching capability allows the system to adapt power pathways in response to generator failures or motor malfunctions, providing flexible redundancy without permanent complex wiring for every possible failure mode
3Ease of operation
If backup batteries and emergency power paths are added, then safety during emergencies is improved, but device complexity increases
Solution Approach 1:
The system pre-configures multiple power pathways and backup battery connections before emergencies occur. Junction boxes are pre-wired with multiple input and output paths, and contactors are pre-positioned to enable instant switching to emergency power modes without requiring complex real-time decision-making or manual reconfiguration during critical situations
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 provides reliable power to eVTOL aircrafts by ensuring redundancy and backup power sources, enabling safe operation and emergency procedures such as landing even if primary power sources fail.
Implementation Method 1
The generators are driven by a turbine engine to produce electrical power
Implementation Method 2
The motors are configured to drive propellers of the electric aircraft
Data Source
AI summary
A power generation and distribution system for an aircraft includes generators, motors, junction boxes, and backup batteries. The generators are driven by a turbine engine to produce electrical power. The motors are configured to drive propellers of the electric aircraft. One or more of the junction boxes include contactors transitionable between an open position and a closed position. The junction boxes are each configured to selectively provide electrical power from at least one of the generators to at least one of the motors. The backup batteries are configured to provide electrical power to the motors through the plurality of junction boxes to power the plurality of motors for at least a remedial procedure.