Radial Flux Machine Layout With Removable Stator Elements
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Solution Overview
Problem
Existing radial flux electrical machines are difficult and expensive to manufacture and maintain due to complex designs requiring multiple components and arrangements for speed encoders, temperature sensors, and control electronics.
Innovation Solution
A radial flux electrical machine design featuring a drivetrain component with a housing and driveshaft supported by bearings within the housing, a stator with electromagnetic elements that can be easily removed and replaced, and a rotor attached to the driveshaft, simplifying the structure and reducing the need for internal bearings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radial flux electrical machines use a self-contained design with internal bearings and complex control arrangements, then the machine is complete and functional, but the manufacturing and maintenance become difficult and expensive
Solution Approach 1:
The electrical machine is divided into separate functional modules: the stator assembly with electromagnetic elements, the rotor assembly with permanent magnets, and the drivetrain component with bearings. This segmentation allows each module to be manufactured, tested, and maintained independently, reducing overall manufacturing complexity while maintaining complete functionality.
Solution Approach 2:
The drivetrain component serves multiple functions: it provides structural housing, contains the bearing support system, and interfaces with both the stator and rotor assemblies. This multi-functionality reduces the total number of separate components needed, simplifying assembly while ensuring reliable operation.
2Ease of operation
If conventional radial flux electrical machines include complex arrangements for speed encoders, temperature sensors and control electronics, then the machine can be controlled based on measured parameters, but the manufacture and maintenance become complex and problematic
Solution Approach 1:
The control electronics, speed encoder, and temperature sensors are integrated into a unified control module that communicates with the stator and rotor assemblies. This consolidation reduces the number of separate control components and simplifies the overall system architecture while maintaining the ability to monitor and control critical parameters.
Solution Approach 2:
The electromagnetic elements and permanent magnets are designed with inherent sensing capabilities that provide feedback on their operational state. This self-monitoring reduces the need for external sensors and complex control arrangements, simplifying both manufacture and maintenance while ensuring controlled operation.
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 design simplifies the manufacturing and maintenance of radial flux electrical machines by allowing for easy removal and replacement of electromagnetic elements and eliminating the need for internal bearings, thereby reducing costs and complexity.
Implementation Method 1
a winding of electrically conductive material located around at least part of the stator core of the electromagnetic element, the electromagnetic elements being arranged around the inner surface of the stator, and operable to induce a magnetic flux field in a radial direction in the inner volume of the stator
Implementation Method 2
the rotor interacts with the magnetic flux field generated by passing electrical current through the stator coils, thereby producing a force, which causes the rotor to rotate with respect to the stator
Data Source
AI summary
A radial flux electrical machine is disclosed. The machine comprises a body of the stator having a body that defines a longitudinal axis a substantially cylindrical inner surface and an inner volume, and having a plurality of electromagnetic elements, each of which includes a stator core and a winding of electrically conductive material located around at least part of the stator core of the electromagnetic element, the electromagnetic elements being arranged around the inner surface of the stator, and operable to induce a magnetic flux field in a radial direction in the inner volume of the stator, and a rotor located within the inner volume of the stator, and rotatable with respect to the stator.