Flyback Power Supply Parallel Transformers Vibration Resistance
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Solution Overview
Problem
Centralized type flyback power supplies face increased size and weight due to insulation requirements, while distributed type power supplies have higher component counts and costs, posing challenges in miniaturization and vibration resistance.
Innovation Solution
A flyback power supply design featuring multiple transformers with primary-side windings connected in parallel and multiple secondary-side windings, reducing the number of components and enhancing miniaturization and cost efficiency compared to distributed type power supplies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a centralized type power supply with one primary winding and multiple secondary-side windings is used, then the number of components is reduced, but the transformer size and weight increase due to insulation requirements
Solution Approach 1:
The invention divides the single transformer into multiple smaller transformers (first transformer and second transformer). Each transformer has fewer windings and requires less insulation space, reducing individual transformer weight and size while maintaining the total power output capability through parallel operation.
Solution Approach 2:
The invention changes the configuration from a single large transformer to multiple smaller transformers arranged in parallel. This dimensional reorganization allows the system to achieve the same power capacity with reduced individual component sizes and weights, as the insulation requirements scale with individual transformer size rather than total system size.
2Device complexity
If a centralized type power supply with one primary winding and multiple secondary-side windings is used, then the number of components is reduced, but the mounting area increases due to increased transformer size
Solution Approach 1:
The single large transformer is segmented into multiple smaller transformers. Each smaller transformer occupies less mounting area, and their distributed arrangement allows for more efficient space utilization on the printed circuit board, reducing the overall mounting area footprint.
Solution Approach 2:
By transitioning from one large transformer to multiple smaller ones, the invention optimizes the spatial distribution of components. The smaller transformers can be arranged more compactly and efficiently on the mounting surface, reducing the total area required while maintaining electrical functionality.
3Weight of stationary object
If a distributed type power supply with multiple transformers each having one or few secondary-side windings is used, then the transformer size is reduced, but the number of components and cost increase
Solution Approach 1:
The invention extracts only the essential functionality needed from each transformer while removing redundant components. By carefully designing each transformer with specific winding configurations and combining them in parallel, the system achieves the required power capacity with fewer total components compared to a fully distributed approach.
Solution Approach 2:
The invention merges multiple smaller transformers into a coordinated parallel system that functions as a unified power supply. This combination allows the system to achieve the power capacity and functionality of a distributed type supply while reducing the total component count through optimized configuration and shared control circuitry.
4Device complexity
If a centralized type power supply with increased transformer size is used, then fewer components are required, but the power supply becomes more susceptible to damage under large vibration environments
Solution Approach 1:
The single large transformer is divided into multiple smaller transformers. Smaller components have lower mass and moment of inertia, making them more resistant to vibration-induced stress and damage. The distributed arrangement also prevents a single point of failure, improving overall system reliability in vibration environments.
Solution Approach 2:
By reconfiguring from one large transformer to multiple smaller ones, the invention changes the mechanical and structural characteristics of the system. The smaller, distributed components are inherently more resistant to vibration damage, and their parallel arrangement provides redundancy, improving reliability without significantly increasing component count.
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 design minimizes component count, reduces size and weight, and enhances vibration resistance by distributing the transformer's weight and size, while maintaining efficient power supply to multiple outputs.
Implementation Method 1
A transformer is used for insulation in all the types
Implementation Method 2
a switch turning on/off primary side currents of the transformers
Data Source
AI summary
Primary-side windings of the transformers (T1,T2,T3) are connected in parallel to each other. A switch (SW) turns on/off primary side currents of the transformers (T1,T2,T3). Each transformer (T1,T2,T3) includes a plurality of secondary-side windings.