Transformer Taps for Power and Data Signal Isolation
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Solution Overview
Problem
Existing transformer systems for contactless power and data transfer are complex and inefficient, particularly in maintaining data signal availability when the primary taps are short-circuited.
Innovation Solution
A transformer design with primary and secondary parts featuring distinct taps for power and data signals, where the third and fourth taps are different from the first and second taps, allowing for improved data signal availability and independent control of the switching circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate power coils and two separate data coils are used for contactless power and data transfer, then the transfer function is achieved, but the device complexity increases
Solution Approach 1:
The patent combines power transfer and data transfer functions into a single transformer structure. The transformer includes a primary winding for power transfer and a secondary winding with multiple taps, where at least one tap provides both power output and data signal extraction. This integration eliminates the need for separate power coils and data coils, reducing structural complexity while maintaining both transfer functions.
Solution Approach 2:
The transformer is designed as a multi-functional device where the secondary winding serves multiple purposes: it provides power output through different taps and simultaneously enables data signal extraction through at least one of its taps. This universal structure allows a single component to perform both power transfer and data communication functions, simplifying the overall system architecture.
2Device complexity
If the first and second taps are used for both power and data signals, then the structure is simplified, but the data signal availability deteriorates when taps are short-circuited
Solution Approach 1:
The secondary winding is divided into multiple segments with distinct taps along its length. By providing separate third and fourth taps specifically dedicated to data signal extraction, the patent segments the functionality within the single winding structure. This ensures that data signal paths are physically separated from power output paths, preventing data signal degradation when power taps are short-circuited.
Solution Approach 2:
The patent introduces intermediate tap points on the secondary winding that serve as dedicated data signal extraction points. These intermediate taps act as mediators between the power transfer function and data communication function, allowing data signals to be extracted at specific points along the winding without being affected by short-circuits at the main power output taps.
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 simplifies the transfer of power and data, ensuring better data signal availability even when the primary taps are short-circuited, and allows the receiver to control the switching circuit independently.
Implementation Method 1
a transformer comprising primary and secondary parts
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Transformers (1) comprise primary parts and secondary parts with first and second taps (11, 12) for providing feeding signals to combinations of switching circuits (22, 26)and loads (21) and with third and fourth taps (13, 14) for providing data signals to receivers (23). At least one of the third and fourth taps (13, 14) is different from the first and second taps(11, 12).In that case, the data signals will be better available, even in case the first and second taps (11, 12) are short-circuited. The primary parts may comprise primary windings (15), the secondary parts may comprise secondary windings (16). The first to fourth taps (11-14) may be taps of the secondary windings(16).The first and third taps (11, 13) may be identical taps, and the second and fourth taps (12, 14) may be different taps. The first and second taps (11, 12) may be outer taps and the fourth taps may be center taps.