Semiconductor Transformer Module for Lighter Wind Turbine Nacelles
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Solution Overview
Problem
Conventional wind power generation systems face challenges in increasing capacity without significantly increasing the volume and weight of power cables, which can restrict design and operation due to the limitations of existing transformers and power conversion devices.
Innovation Solution
A wind power generation system incorporating a semiconductor transformer module that integrates a power conversion device and transformer, formed with stranded wire windings and a ferrite or nano-crystal iron core, allowing for smaller volume and weight, and adjustable configuration to optimize efficiency and accommodate various voltages and capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the capacity of the wind power system is increased by increasing the current, then the power output is improved, but the volume and weight of the power cable are increased
Solution Approach 1:
The patent combines the transformer and power conversion device into a single integrated module, allowing the transformer to be positioned closer to the generator. This integration enables more efficient power transmission with reduced cable requirements, as the combined unit optimizes the conversion and transmission process together rather than as separate components.
Solution Approach 2:
The patent changes the operating parameters by using a high-frequency transformer design that operates at frequencies higher than the conventional 50/60 Hz. This parameter change allows for smaller, lighter cables while maintaining the same power transmission capacity, as high-frequency operation reduces the required cable diameter for the same current carrying capacity.
2Weight of stationary object
If the power conversion device is installed in the nacelle to reduce power cable diameter, then the cable weight is reduced, but the volume and weight of the nacelle are increased
Solution Approach 1:
The patent merges the transformer and power conversion device into one compact integrated module, reducing the total volume required in the nacelle compared to having separate units. This combination allows the system to achieve cable weight reduction while minimizing the space occupation in the nacelle.
Solution Approach 2:
By changing to high-frequency operation, the transformer and associated components can be designed with smaller dimensions, reducing the volume they occupy in the nacelle while still achieving the goal of reduced power cable diameter and weight.
3Device complexity
If a conventional transformer is used at the lower portion of the wind power generator, then the system structure is simplified, but the volume and weight of the power cable are increased
Solution Approach 1:
The patent integrates the transformer with the power conversion device, creating a combined unit that can be positioned closer to the generator. This integration maintains structural simplicity while enabling reduced cable weight through optimized power transmission paths and high-frequency operation.
Solution Approach 2:
The patent transitions from conventional low-frequency transformer operation to high-frequency operation, which allows for lighter power cables while maintaining the simplified structural arrangement of having the transformer at the lower portion of the generator.
4Power
If the capacity of the wind generator is increased, then the power output is improved, but the volume and weight of the nacelle are increased
Solution Approach 1:
The integrated transformer-power conversion module allows for more efficient space utilization in the nacelle, enabling higher power output capacity without proportionally increasing nacelle volume. The combined unit reduces the total component volume required compared to separate installations.
Solution Approach 2:
By operating at high frequencies, the system achieves better power density, allowing increased power output capacity within the same or reduced nacelle volume. The high-frequency operation enables more compact component designs that maintain high power ratings.
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
The semiconductor transformer module reduces cable diameter, weight, and nacelle volume, enabling easier installation and maintenance, improved power conversion efficiency, and increased rotation angles, making it suitable for difficult-to-access locations.
Implementation Method 1
a semiconductor transformer module which is electrically connected to the generator and receives input power from the generator and converts the same into preset output power
Implementation Method 2
a ferrite or nano-crystal iron core
Data Source
AI summary
Disclosed are a wind power generation system including a semiconductor transformer module in which a power conversion device and a transformer are integrally formed, and a control method therefor, and more particularly, a wind power generation system including a semiconductor transformer module and a control method therefor, the system including a rotating unit that is rotatable by wind power and a nacelle coupled to one side of the rotating unit, wherein the nacelle includes a generator and a semiconductor transformer module for converting input power of the generator into power of a higher voltage.