Conductive Ring Assembly Using Planetary Gears for Wind Turbines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional conductive slip rings in wind turbines suffer from poor interference-resistance, low stability, and unreliable communication due to electromagnetic interference and jitter caused by rotating speed fluctuations, leading to unnecessary shutdowns and reduced power generation.
Innovation Solution
A conductive ring assembly utilizing a planetary gear structure to transmit communication data, with the power and communication lines distributed perpendicular to each other, reducing electromagnetic interference and wear, and improving stability through the use of a rotatable gear structure and conductive bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power line and communication line are arranged in parallel concentric circles, then the structure is simple, but electromagnetic interference occurs causing poor communication reliability
Solution Approach 1:
The patent transitions from a two-dimensional parallel concentric arrangement to a three-dimensional orthogonal arrangement where power lines and communication lines are perpendicular to each other in space. This dimensional change eliminates electromagnetic interference while maintaining structural simplicity.
2Reliability
If brush positions are fixed and brushes are thin, then the device structure is simple, but severe wear occurs after long operation causing unreliable contact
Solution Approach 1:
The patent introduces a rotatable brush holder that can dynamically adjust brush positions based on wear and operational conditions. This dynamic adjustment mechanism distributes wear more evenly and maintains reliable contact throughout the service life, extending the duration of reliable operation.
3Reliability
If brush type conduction is used, then the structure is simple, but transient of rotating speed causes jitter and unreliable contact
Solution Approach 1:
The patent employs a dynamic brush holder rotation mechanism that actively compensates for speed transients and jitter. The brush holder can rotate to maintain optimal contact positions even when the impeller speed fluctuates, ensuring stable communication contact despite variable operating conditions.
4Productivity
If conventional slip ring is used, then the device is simple, but electromagnetic interference causes communication flashes leading to unnecessary shutdowns
Solution Approach 1:
By arranging power lines and communication lines in perpendicular three-dimensional orientations rather than parallel two-dimensional concentric circles, the patent eliminates electromagnetic interference that causes communication flashes. This prevents unnecessary shutdowns and maintains continuous power generation.
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
Enhances interference-resistance and stability, reduces wear on communication lines, and extends the service life of the slip ring by mitigating jitter effects, ensuring reliable communication and power transmission in wind turbines.
Implementation Method 1
The planetary gears are electrically connected to both the sun gear and the ring gear, which allows electrical signals to be transmitted between the sun gear and the ring gear via the one or more planetary gears
Implementation Method 2
the power line and the communication line are distributed perpendicular to each other, which facilitates the reduction of the adverse effects of electromagnetic interference on the communications of the slip ring
Data Source
AI summary
Disclosed are a conductive ring assembly, a conductive device and a wind turbine. The conductive ring assembly includes a sun gear, a ring gear and one or more planet gear. The sun gear is located in the ring gear, and the sun gear and the ring gear are coaxially arranged. The one or more planet gear is engaged between the sun gear and the ring gear. The planet gear is conducted with the sun gear and the ring gear at the same time, so that an electrical signal is transmitted between the sun gear and the ring gear by means of the one or more planet gear. The conductive ring assembly uses a planet gear structure for communication data transmission to improve the interference resistance of the conductive ring assembly.