Dual-Rotor Motor Assembly With Integrated Independent Control
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Solution Overview
Problem
Conventional motor assemblies for propulsion systems, such as those in urban mobility vehicles and aircraft, face challenges in achieving efficient and compact dual propulsion with independent control of multiple rotors and stators, leading to increased complexity and wiring requirements.
Innovation Solution
A dual rotor motor assembly with a housing containing two rotors and their respective stators, an electronics module for independent control of rotor direction and speed, and a cooling module, allowing for compact integration and reduced wiring by incorporating all necessary components within a single housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional motor assemblies use separate housings for multiple rotors, then each rotor can be independently controlled, but the overall system size and wiring complexity increase
Solution Approach 1:
The patent combines multiple motor assemblies into a single integrated housing structure. The housing contains multiple stators and rotors that share common structural support and cooling systems, reducing the number of separate components and wiring harnesses needed while maintaining independent control capability through a unified electronics module
2Ease of operation
If conventional motor assemblies use separate housings for multiple rotors, then each rotor can be independently controlled, but the system becomes less compact
Solution Approach 1:
Multiple motor assemblies are merged into a single housing volume, with stators and rotors arranged in a compact configuration that shares common structural and thermal management resources, significantly reducing the total system volume compared to separate housings
Solution Approach 2:
The patent employs a nested arrangement where inner rotors are positioned within the magnetic field of outer stators, and multiple rotor-stator pairs are concentrically or axially nested to maximize space utilization within the housing, achieving compact integration of multiple propulsion units
3Ease of operation
If conventional motor assemblies use separate housings for multiple rotors, then each rotor can be independently controlled, but manufacturing and assembly become more complex
Solution Approach 1:
The integrated housing design allows multiple stators and rotors to be manufactured as coordinated assemblies that can be pre-tested and then installed as units, reducing the number of separate assembly operations and quality checks needed compared to multiple independent housing assemblies
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 solution enables a compact and efficient dual propulsion system with reduced wiring and transmission line effects, allowing for independent control of multiple rotors and stators, thereby enhancing propulsion efficiency and reducing complexity.
Implementation Method 1
electrical machines direct drive for propulsion systems, for example, propellers or ducted fans in urban mobility vehicles, rotorcraft, small aircraft
Implementation Method 2
rotor magnets rotate relative to a fixed stator to drive a rotor to carry torque to an output shaft
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A motor assembly (100, 200) including a housing (101, 201), a first rotor (R1, R1') and a second rotor (R2, R2') provided in the housing (101, 201). The first rotor (R1, R1') is configured to drive a first output shaft (110, 210), and the second rotor is configured to drive a second output shaft (112, 212).