Electromagnetic Applicator Coil Wiring for High-Pulse Power Loss Reduction
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Solution Overview
Problem
Conventional electromagnetic therapy devices suffer from high power losses due to high-intensity currents, requiring cooling systems and limiting flexibility and effectiveness, while reducing current intensity compromises therapy efficacy.
Innovation Solution
An electromagnetic applicator system utilizing high-frequency stranded wires to minimize power loss, powered by a battery pack, allowing high pulse power without cooling, and featuring plug connections for flexible applicator attachment and passive cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-intensity pulsed signals are used in conventional devices, then high pulse power is achieved, but high power losses occur requiring cooling systems
Solution Approach 1:
The patent changes the frequency parameter of the pulsed signals to high-frequency range (above 1 kHz), which fundamentally alters the electrical behavior of the coils and reduces power losses through minimized inductive effects and optimized current distribution
Solution Approach 2:
The patent segments the coil windings into multiple smaller coils connected in series, where each small coil receives a phase-shifted version of the pulsed signal. This segmentation reduces the current required in each individual coil while maintaining the overall magnetic field strength, thereby reducing power losses
2Power
If conventional coils are used with high currents, then high pulse power is generated, but device complexity increases due to cooling requirements
Solution Approach 1:
By changing to high-frequency operation and segmented coil configuration, the system achieves high pulse power without the thermal management infrastructure typically required, eliminating water cooling systems, thermal sinks, and associated control mechanisms
Solution Approach 2:
The patent extracts and removes the cooling system from the device architecture entirely, relying instead on the inherent efficiency of high-frequency operation and segmented coil design to manage thermal loads without active cooling infrastructure
3Power
If conventional devices are designed for high power, then pulse power is sufficient, but flexibility and portability are reduced
Solution Approach 1:
The patent segments the coil assembly into multiple independent small coils that can be individually controlled with phase-shifted signals, allowing flexible configuration and adaptation to different therapeutic applications while maintaining high overall pulse power capability
Solution Approach 2:
The patent employs periodic pulsed signals at high frequency with controlled duty cycles, allowing the system to deliver high peak power when needed while consuming minimal average power, enabling portable battery-operated operation
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
Achieves high efficiency and flexibility with reduced power requirements, enabling portable and silent operation, and effective PEMF treatment with high pulse power and gradient magnetic fields.
Implementation Method 1
it has only a low energy requirement despite high pulse power... a significant reduction in power loss can be achieved by using high-frequency stranded wires
Implementation Method 2
the control unit is set up to generate a sequence of electrical pulse signals... so that the at least one applicator generates an electromagnetic field
Implementation Method 3
a battery pack for supplying the control unit
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An electromagnetic applicator system comprises a housing (100) which contains a control unit (110), a battery pack (120) for supplying the control unit (110) and plug connections (130) which are accessible from the outside, and at least one applicator (200) which comprises at least one coil (210) which is connectable to the plug connections (130) via a supply line with an at least two-pole plug connection. The at least one coil and the supply line are formed with a high-frequency stranded wire. The control unit (110) is configured to generate a sequence of electrical pulse signals (PS) from energy stored in the battery pack (120) for output via the plug connections (130), so that the at least one applicator (200) generates an electromagnetic field when it is connected to the plug connections (130). Each pulse signal (PS) has a maximum pulse power in the range from 100 kW to 10 MW with a pulse length in the range from (100) µs to (10) ms.