Wind Turbine Transformer Layout for Higher Power and Stability
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Solution Overview
Problem
Conventional wind turbines face challenges in increasing power output without escalating transformer size, complexity, and cost, as well as mechanical instability due to the limitations of single, high-rated transformers.
Innovation Solution
The implementation of a transformer system comprising multiple transformers, each with a similar transformation ratio, arranged within the wind turbine to distribute power output and reduce mechanical load, allowing for increased power generation while maintaining compactness and reducing complexity and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single high-rated transformer is used to increase power output, then power throughput increases, but transformer size, weight, and complexity increase
Solution Approach 1:
The patent divides the single high-rated transformer into multiple lower-rated transformers (e.g., two 15 MVA transformers instead of one 30 MVA transformer). Each transformer handles a portion of the total power load, reducing individual unit complexity while maintaining overall system power capacity. This segmentation allows for simpler, more manageable transformer designs that can be independently maintained and replaced.
2Power
If a single high-rated transformer is used to increase power output, then power throughput increases, but transformer weight increases
Solution Approach 1:
The total transformer weight is distributed across multiple smaller transformer units. Each individual transformer weighs less than a single equivalent high-rated transformer would, making installation, positioning, and potential replacement more manageable. The combined weight of multiple smaller transformers equals or is less than one large transformer, while providing the same power capacity.
3Power
If a single high-rated transformer is used to increase power output, then power throughput increases, but mechanical stability decreases
Solution Approach 1:
Multiple smaller transformers can be distributed and positioned more effectively within the nacelle structure, allowing for better weight distribution and mechanical balance. The segmented configuration enables more flexible mounting arrangements that can maintain or improve mechanical stability compared to a single large transformer occupying a concentrated space.
Solution Approach 2:
The patent positions multiple transformers to balance their weights and create counterbalancing effects within the nacelle. By strategically locating transformers with opposite or complementary weight distributions, the system achieves improved mechanical stability and reduced vibrations during operation.
4Power
If a single high-rated transformer is used to increase power output, then power throughput increases, but maintenance difficulty increases
Solution Approach 1:
Each smaller transformer can be independently accessed, inspected, and maintained without affecting the others. If one transformer requires maintenance or replacement, the system can potentially continue operating with reduced capacity using the remaining transformers. This modular approach significantly simplifies maintenance procedures and reduces downtime compared to a single large transformer where any maintenance requires complete system shutdown.
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 configuration enhances power output, reduces mechanical instability, simplifies maintenance, and lowers material and cost requirements by distributing weight and load more efficiently, enabling operation even in case of component failures and reducing the nacelle's height.
Implementation Method 1
The wind turbine transformer transforms the AC power stream to higher voltage
Data Source
AI summary
Provided is a wind turbine, including: plural transformers, including a first transformer and at least one second transformer, the transformers being connectable to at least one generator, in particular via at least one converter, wherein the transformers are arranged within an inside of the wind turbine.