Wind Turbine Pitch Motor Relocation Bracket
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Solution Overview
Problem
Current wind turbine pitch control system repairs require the removal of blades or rotors, which are costly and time-consuming, especially for offshore turbines, and can lead to unsafe working conditions and temporary shutdowns due to asymmetric loading and potential electrical transients.
Innovation Solution
A replacement motor mount system that allows the pitch motor to be relocated by a predetermined distance to avoid damaged regions of the pitch bearing, enabling repairs without removing the rotor or blade, using a bracket assembly to secure the motor and reduce interaction with worn areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pitch motor is relocated to avoid damaged bearing regions, then the pitch system reliability is improved, but the device complexity increases due to the replacement motor mount structure
Solution Approach 1:
The motor mount is divided into a first motor mount and a second motor mount, allowing the pitch motor to be relocated to a different position on the hub. This segmentation enables the system to bypass damaged bearing regions while maintaining functional integrity, thus improving reliability without requiring complete system replacement.
Solution Approach 2:
The solution moves the pitch motor from a single fixed location to an alternative location on the hub, effectively using spatial dimensionality to avoid damaged regions. By changing the motor's positional dimension, the system can operate around damaged bearing areas rather than being constrained by the original single-location design.
2Ease of repair
If blade or rotor removal is performed for repair, then the pitch control system can be repaired, but the loss of time increases due to extensive removal and reinstallation procedures
Solution Approach 1:
The invention extracts only the necessary component (the pitch motor) from the blade assembly and relocates it to an alternative position on the hub, rather than requiring removal of the entire blade or rotor. This selective extraction minimizes downtime while still enabling the repair of pitch control system issues.
Solution Approach 2:
The alternative motor mount is pre-configured on the hub before the pitch motor needs relocation. This preliminary preparation allows for quick motor transfer without extensive disassembly procedures, significantly reducing repair time compared to traditional blade or rotor removal methods.
3Ease of repair
If blade or rotor removal is performed for repair, then the pitch control system can be repaired, but the cost increases due to the requirement for large cranes
Solution Approach 1:
By extracting and relocating only the pitch motor rather than removing the entire blade or rotor, the invention eliminates the need for expensive large-capacity cranes. This selective component extraction significantly reduces equipment costs while maintaining repair capability.
Solution Approach 2:
The invention uses a simpler, less expensive motor mounting approach that does not require heavy lifting equipment. By avoiding blade or rotor removal, the system eliminates the need for costly crane operations, effectively replacing expensive temporary resources with a more economical permanent solution.
4Device complexity
If the pitch motor remains at the original location, then the device complexity is minimized, but the object-affected harmful factors increase due to interaction with damaged bearing regions
Solution Approach 1:
The pitch motor is relocated to a different spatial position on the hub, changing its dimensional relationship with the bearing regions. This positional change allows the motor to operate without interacting with damaged bearing areas, reducing harmful mechanical interactions while maintaining system functionality.
Solution Approach 2:
The alternative motor mount is positioned to specifically avoid damaged bearing regions, creating a localized solution that addresses the harmful interaction at the problem area while leaving the rest of the system unchanged. This localized repositioning reduces harmful effects without requiring comprehensive system redesign.
Data Source
AI summary
A replacement motor mount for a pitch system of a wind turbine includes a bracket assembly configured for attachment to a first motor mount and a second supporting structure. The replacement motor mount is configured for mounting and securing a pitch motor having a geared drive end. The replacement motor mount is configured to displace the pitch motor from the first motor mount by a predetermined distance.