Auxiliary Motor Windings for Self-Powered Electronic Components
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Solution Overview
Problem
Existing electric motors require external power supplies or batteries for accessory devices like sensors and diagnostic equipment, which are costly to install and maintain, and batteries have limited lifespan, limiting digital capabilities and wireless communication.
Innovation Solution
Integrate auxiliary windings within the motor to harvest energy from primary coils, providing power to accessory devices such as sensors and rectifiers, eliminating the need for separate power supplies or batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external power supplies are used to power accessory devices, then the motor system can support sensors and diagnostic equipment, but installation and maintenance costs increase
Solution Approach 1:
The patent combines the power supply function for accessory devices directly into the motor structure by integrating auxiliary windings into the stator. This merging eliminates the need for separate external power supplies, thereby reducing installation complexity and cost while maintaining the ability to power sensors and diagnostic equipment.
Solution Approach 2:
The motor stator is designed to serve multiple functions: the primary windings drive the motor while the integrated auxiliary windings simultaneously provide power to accessory devices. This multi-functionality allows the motor system to support digital capabilities without requiring additional dedicated power supply components.
2Ease of operation
If batteries are used to power accessory devices, then the motor system can operate without external power supplies, but the power dissipates faster than the motor's useful life
Solution Approach 1:
The motor system serves itself by generating its own auxiliary power through the integrated auxiliary windings in the stator. The primary motor operation automatically induces power in the auxiliary windings, providing continuous energy to accessory devices without requiring separate batteries or external power sources, thus eliminating lifespan mismatch issues.
3Ease of operation
If batteries with limited lifespan are used, then the motor system can power accessory devices portably, but digital capabilities and wireless communication are limited
Solution Approach 1:
The integrated auxiliary windings provide continuous self-powered operation throughout the motor's operational life, enabling sustained digital capabilities and wireless communication without the portability limitations imposed by finite battery capacity. The system draws power continuously from the motor's own operation.
4Device complexity
If auxiliary windings are integrated into the motor, then separate power supplies are eliminated, but the motor structure becomes more complex
Solution Approach 1:
The auxiliary windings are integrated directly into the stator structure, merging the power supply function with the existing motor component. This approach reduces the total number of separate components while the manufacturing processes for winding and assembling are extensions of standard motor manufacturing techniques, keeping production complexity manageable.
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
Enables self-powered accessory devices, reducing installation and maintenance costs while extending the motor's digital and communication capabilities.
Implementation Method 1
the plurality of primary coils generate a magnetic field based on receiving power from an external power source, wherein the plurality of auxiliary coils harvests energy from the plurality of primary coils and provides the harvested energy to the one or more accessory devices, and wherein the harvested energy comprises an induced current or voltage caused by the generated magnetic field of the plurality of primary coils
Data Source
AI summary
A system comprising a poly-phase electric motor is provided. The poly-phase electric motor comprises a rotor including a motor shaft delineating a rotational axis; a stator concentrically disposed about the rotor, the stator including a stator core and a plurality of stator slots disposed radially into an inner cylindrical stator surface of the stator core; a plurality of primary coils formed from first conductive windings, wherein the plurality of primary coils are located within the plurality of stator slots; an insulating component disposed between the plurality of primary coils and a plurality of auxiliary coils and configured to be an insulation barrier between the plurality of primary coils and a plurality of auxiliary coils; the plurality of auxiliary coils formed from second conductive windings and coupled to the stator; and one or more accessory devices electrically connected to the plurality of auxiliary coils.