Transformer Unit with Oppositely Wound Reactors for LED Current Control
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Solution Overview
Problem
Existing technologies face challenges in achieving uniform current distribution and efficient control of multiple electrical consumers, such as LEDs, batteries, and electric motors, due to component tolerances and manufacturing deviations, leading to irregular brightness and reduced lifespan, and require complex current regulation systems.
Innovation Solution
A device with a transformer unit and magnetically interacting reactor pairs, where chokes are wound in opposite directions to maintain constant current across control nodes, allowing for equal current division and minimizing power loss, and can be cascaded to control multiple consumers with reduced hardware complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate current regulating units are connected upstream from each LED strand to achieve uniform luminous efficiency, then the current distribution among parallel strands becomes uniform, but the device complexity and hardware requirements increase significantly
Solution Approach 1:
The patent combines multiple current regulation functions into a single centralized control unit that manages all LED strands through a common current source. Instead of having separate regulating units for each strand, the invention uses one control unit with switching elements that can direct and regulate current to multiple strands simultaneously, thereby reducing overall device complexity while maintaining uniform luminous efficiency across all strands.
Solution Approach 2:
The control unit is designed with multi-functionality to perform current regulation for multiple different LED strands through a single device. The switching elements and control circuitry can dynamically allocate current to various strands, making the single control unit serve multiple regulatory functions that would otherwise require separate dedicated units for each strand.
2Illumination intensity
If multiple LED strands are connected in parallel to exceed safety limits for low voltages, then higher cumulative light intensity can be achieved, but voltage differences develop among strands leading to uneven current distribution and irregular brightness
Solution Approach 1:
The patent employs dynamic current allocation through switching elements that can actively adjust and balance the current distribution among parallel LED strands in real-time. The control unit monitors and regulates current flow dynamically, compensating for voltage differences that arise due to component tolerances, thereby maintaining uniform current distribution and consistent brightness across all strands even when connected in parallel to achieve high cumulative light intensity.
3Illumination intensity
If multiple LED strands are connected in parallel to achieve higher cumulative light intensity, then the illumination output increases, but power loss increases due to voltage differences and uneven current distribution
Solution Approach 1:
The control unit incorporates feedback mechanisms that monitor the current distribution and voltage levels across parallel LED strands. Based on this feedback, the control unit adjusts the switching elements to optimize current allocation, ensuring that power is distributed efficiently among all strands. This feedback control prevents excessive power loss by maintaining balanced current distribution and minimizing the impact of voltage differences, thereby preserving energy while achieving the desired cumulative light intensity.
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 solution ensures constant and equalized current delivery to multiple electrical consumers, reducing power loss and hardware complexity, while accommodating voltage differences and tolerances, thereby enhancing efficiency and lifespan.
Implementation Method 1
A transformer unit to which a regulated and/or constant current having a predetermined frequency is applied at the input end comprises at least one first and a second winding at the output end
Implementation Method 2
the first and the second circuit branch each have a magnetically interacting pair of reactors which are wound in opposite directions relative to each other, and a first reactor of said pair is connected to the first control node via rectifying means
Data Source
AI summary
A device for controlling a plurality of electrical consumers to which a constant control current is applied at control nodes. A transformer to which a regulated and/or constant predetermined frequency current is applied at the input end has at least one first and a second winding at the output end which have a common tap, first and second circuit branches forming first and second control nodes for first and second electrical consumers are associated with the first and second windings respectively. The first and second circuit branches each have a magnetically interacting pair of reactors which are wound in opposite relative directions. The first and second reactors of the pair are connected to the first and second control nodes, respectively, via a rectifier. The reactors that are connected to one of the control nodes are oppositely wound. Reactors pairs are magnetically coupled, in particular having a common reactor core.