Capacitor With Alternating Polarity Units
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional capacitors with parallel capacitor units of the same polarity amplify the overall electromagnetic field outside, leading to adverse effects on acoustics and electromagnetic compatibility (EMC), resulting in high stray inductance and increased component costs.
Innovation Solution
A capacitor design featuring at least two capacitor units with opposite polarity, arranged in an alternating parallel configuration to reduce the overall electromagnetic field outside while maintaining a low inherent inductance and rectangular shape, allowing for easy integration into existing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If capacitor units are arranged in parallel with the same polarity, then the capacitor can store sufficient energy, but the electromagnetic field outside the capacitor is amplified
Solution Approach 1:
The patent applies inversion by alternating the polarity of adjacent capacitor units. Instead of all units having the same polarity (conventional approach), the invention uses alternating positive and negative polarity arrangements. This causes the electromagnetic fields from adjacent units to oppose each other, canceling out the external electromagnetic field amplification while maintaining the energy storage capacity through the parallel connection of all units.
2Device complexity
If capacitor units with the same polarity are used, then the structure is simple, but the stray inductance in the commutation circuit is high
Solution Approach 1:
The invention inverts the conventional same-polarity arrangement by using alternating polarity in adjacent capacitor units. This alternating arrangement creates opposing magnetic fields that cancel each other's inductive effects, significantly reducing the stray inductance in the commutation circuit while maintaining a relatively simple overall capacitor structure.
3Ease of manufacture
If capacitor units with the same polarity are arranged in parallel, then the capacitor can be easily manufactured, but additional EMC filtering is required
Solution Approach 1:
The patent applies the inversion principle by alternating the polarity of adjacent capacitor units during manufacturing. This alternating polarity arrangement inherently cancels electromagnetic fields and improves electromagnetic compatibility, eliminating or reducing the need for additional EMC filtering components while maintaining ease of manufacture through a systematic arrangement pattern.
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 design effectively weakens the electromagnetic field outside the capacitor, improving EMC and acoustics, reducing inherent inductance, and minimizing component costs by enabling cost-effective production and installation without requiring significant redesign.
Implementation Method 1
a first capacitor unit and a second capacitor unit of the at least two capacitor units have opposite polarity... the electromagnetic field is amplified locally between capacitor windings; at the same time, the overall electromagnetic field outside of the capacitor winding is weakened
Data Source
AI summary
A capacitor has at least two capacitor units, wherein a first capacitor unit and a second capacitor unit of the at least two capacitor units have opposite polarities.