Multi-Transformer Power Converter Heat Distribution
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Solution Overview
Problem
Conventional DC/DC converters experience reduced power conversion efficiency and high power loss due to excessive heat generation in transformer magnetic cores when handling high input power, as they lack effective mechanisms to distribute and dissipate magnetic power efficiently.
Innovation Solution
The implementation of a power converter design that utilizes multiple transformer circuits with balanced magnetizations and auxiliary windings, along with balance circuitry and voltage dividing circuitry, to distribute input power across multiple primary and secondary windings, thereby reducing heat dissipation challenges and enhancing conversion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single transformer circuit is used to handle high input power, then the power conversion capability is improved, but the heat dissipation problem worsens and power conversion efficiency decreases
Solution Approach 1:
The patent divides the single transformer circuit into multiple transformer circuits (first transformer circuit with primary winding P1 and secondary winding S1, second transformer circuit with primary winding P2 and secondary winding S2). Each transformer circuit handles a portion of the total power, distributing the heat generation and improving overall power conversion efficiency while maintaining high power conversion capability.
2Loss of energy
If multiple transformer circuits are used to distribute power, then heat dissipation is improved and conversion efficiency increases, but device complexity increases
Solution Approach 1:
The patent combines multiple transformer circuits into a unified power conversion system with a common control mechanism. The primary windings P1 and P2 are connected to a common input, and the secondary windings S1 and S2 are connected to a common output, creating a coordinated multi-transformer system that achieves efficient power distribution without excessive complexity.
Solution Approach 2:
The patent employs balance circuitry that monitors and adjusts the operation of multiple transformer circuits to maintain optimal power distribution. This feedback mechanism ensures that each transformer circuit operates efficiently while automatically adapting to load changes, preventing the system from becoming overly complex through manual adjustment requirements.
3Power
If high input power is processed through a single transformer, then power handling capability is improved, but magnetic core heat generation increases
Solution Approach 1:
The patent segments the high input power into multiple smaller power streams that are processed by separate transformer circuits. The first transformer circuit processes a first portion of the input power through primary winding P1, while the second transformer circuit processes a second portion through primary winding P2. This segmentation distributes the magnetic flux density and heat generation across multiple magnetic cores, preventing excessive temperature rise in any single core while maintaining high overall power handling capability.
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 effectively reduces power loss and improves conversion efficiency by distributing heat dissipation across multiple transformer circuits and balancing magnetizations, allowing for higher input power handling with lower losses compared to conventional designs.
Implementation Method 1
The first transformer circuit includes a first primary winding for receiving a first part of the input power and a first secondary winding for generating a first part of the output power. The second transformer circuit includes a second primary winding for receiving a second part of the input power and a second secondary winding for generating a second part of the output power.
Implementation Method 2
The first auxiliary windings and a second auxiliary winding are coupled to a common node and operable for balancing the first and second magnetizations by passing a signal via the common node.
Data Source
AI summary
A power converter for converting input power to output power includes a first transformer circuit, a second transformer circuit, and balance circuitry. The first transformer circuit includes a first primary winding for receiving a first part of the input power and a first secondary winding for generating a first part of the output power. The second transformer circuit includes a second primary winding for receiving a second part of the input power and a second secondary winding for generating a second part of the output power. The balance circuitry is coupled to a first terminal of the first secondary winding and a second terminal of the second secondary winding, and operable for balancing the first and second parts of the output power by passing a signal between the first and second terminals. The first and second terminals have the same polarity.