High-Frequency Wind Power Transformer Architecture for Smaller Cores
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Solution Overview
Problem
The existing transformers for wind power electric energy face challenges with large size, weight, and high cost due to the use of low-frequency electric energy, which requires larger iron cores, increasing material waste and manufacturing costs.
Innovation Solution
A voltage and frequency transformation system that includes modules for inputting, transforming, and outputting electric energy to achieve high-frequency transmission, reducing the cross-sectional area of the transformer iron core and lowering production costs by utilizing a linear relationship between frequency and core size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the frequency of electric energy is increased during voltage transformation, then the cross-sectional area of the transformer iron core is reduced, but the complexity of the transformation system increases due to additional frequency conversion modules
Solution Approach 1:
The transformation process is segmented into distinct functional modules: a frequency transformation module that converts low-frequency electric energy to high-frequency electric energy, and a voltage transformation module that performs voltage conversion. This segmentation allows each module to be optimized independently, with the frequency transformation module enabling the voltage transformer to operate at higher frequencies with reduced core size.
Solution Approach 2:
High-frequency electric energy serves as an intermediary state between the low-frequency input and the final output. The electric energy is first transformed to high frequency, then voltage transformation is performed on this high-frequency energy, which allows for more efficient transformer design with smaller core cross-sectional area.
2Reliability
If the cross-sectional area of the transformer iron core is increased to handle low-frequency electric energy, then the voltage transformation capability is maintained, but the weight and volume of the transformer increase
Solution Approach 1:
The frequency parameter of the electric energy is changed from low-frequency to high-frequency before voltage transformation. This parameter change allows the transformer to operate more efficiently with a smaller iron core cross-sectional area, directly reducing both the weight and volume of the transformer while maintaining its voltage transformation capability.
3Productivity
If the iron core size is increased to accommodate low-frequency transformation, then the transformation capacity is sufficient, but the manufacturing cost increases due to more core materials
Solution Approach 1:
Frequency transformation is performed as a preliminary action before voltage transformation. By converting the low-frequency electric energy to high-frequency electric energy first, the subsequent voltage transformation can be performed with a smaller, less expensive transformer core, thereby reducing material costs while maintaining adequate transformation capacity.
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 system enables high-frequency transmission, reducing the transformer's iron core size and manufacturing costs while maintaining voltage levels, thus optimizing transformer design and efficiency.
Implementation Method 1
a first frequency transformation module, connected with the electric energy input module, and configured to carry out frequency transformation on the low-frequency electric energy to obtain high-frequency electric energy
Implementation Method 2
a transformer, connected with the first frequency transformation module, and configured to carry out voltage transformation on the high-frequency electric energy to obtain second high-frequency electric energy after voltage transformation
Implementation Method 3
a second frequency transformation module, connected with the transformer, and configured to carry out frequency transformation on the high-frequency electric energy after voltage transformation to obtain second low-frequency electric energy
Data Source
AI summary
Provided are voltage and frequency transformation systems, methods and devices, and relate to the field of transformers. The method includes: inputting low-frequency electric energy with frequency lower than a first predetermined frequency threshold; the low-frequency electric energy including low-frequency and low-voltage electric energy or low-frequency and high-voltage electric energy; obtaining high-frequency electric energy with frequency higher than a second predetermined frequency threshold; the high-frequency electric energy including first high-frequency and low-voltage electric energy or first high-frequency and high-voltage electric energy; obtaining second high-frequency electric energy after voltage transformation; the second high-frequency electric energy including second high-frequency and high-voltage electric energy or second high-frequency and low-voltage electric energy; obtaining second low-frequency electric energy; the second low-frequency electric energy including second low-frequency and high-voltage electric energy or second low-frequency and low-voltage electric energy.