Power Converter Triangular Condenser Layout for Wiring Reduction
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Solution Overview
Problem
Conventional power converters have long wiring distances between filter condensers and switching elements, which can lead to increased size and complexity, and are not optimized for efficient power conversion.
Innovation Solution
The filter condensers are arranged in a triangular shape on a plane parallel to the mounting surface of the switching elements, equalizing and shortening the wiring distances between them, allowing for a more compact and efficient layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If filter condensers are arranged in a line in the longitudinal direction on the substrate, then the device structure is simple, but the wiring distance between IGBTs and filter condensers becomes long
Solution Approach 1:
The patent transitions from a one-dimensional linear arrangement of filter condensers to a two-dimensional triangular arrangement. By positioning the three filter condensers at the vertices of an equilateral triangle on the substrate, the wiring paths from each IGBT to its corresponding filter condenser are optimized, significantly reducing the total wiring length while maintaining structural simplicity.
2Productivity
If wiring distance between IGBTs and filter condensers is reduced, then power conversion efficiency improves, but arrangement complexity increases
Solution Approach 1:
The patent employs asymmetric positioning of filter condensers relative to the IGBTs, with each filter condenser placed at a vertex of an equilateral triangle rather than in symmetric linear positions. This asymmetric triangular arrangement optimizes the wiring paths and reduces inductance, thereby improving power conversion efficiency while maintaining manageable structural complexity.
Data Source
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AI summary
Provided is a power converter 3 that directly converts polyphase AC power to AC power. A converter circuit has a plurality of switching elements 311, 313, 315, 312, 314 and 316 which are connected to each phase R, S or T of the polyphase AC power to enable switching for turning on current-carrying bidirectionally. At least three condensers 821 to 826 are provided between phases of the converter circuit. The three condensers are respectively placed at apexes of a triangle on a plane that is in parallel with a part-mounting surface on which the switching elements are actually mounted. The wiring distance between the condensers and the switching elements can be shortened.