Three-Phase AC Reactor External Connection Position Change Unit
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Solution Overview
Problem
Conventional three-phase AC reactors with coils arranged neither in parallel nor in a linear manner pose difficulties in connecting general-purpose input and output terminal blocks, leading to increased production time and potential operation errors due to the need for bus bars or cables to connect coil ends to the terminal block.
Innovation Solution
A three-phase AC reactor design featuring an external connection position change unit that allows for easy connection of coil ends to an input and output terminal block, using non-intersecting or intersecting bus bars molded in resin, which are detachable and can be connected via pressure welding or screwing, facilitating alignment and connection regardless of coil orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coils are arranged neither in parallel nor in a linear manner, then space utilization and magnetic field distribution are improved, but connection difficulty to terminal block increases
Solution Approach 1:
The patent introduces an external connection position change unit as an intermediary component between the non-linearly arranged coils and the terminal block. This unit includes connection terminals that can be selectively connected to different coil ends, serving as a mediator that decouples the fixed terminal block from the flexible coil arrangement, thereby maintaining both arrangement flexibility and connection ease
Solution Approach 2:
The patent implements a dynamic connection system where the external connection position change unit allows selective switching between different coil end connections. This dynamic configuration capability enables the system to adapt the connection positions according to the actual coil arrangement, resolving the contradiction between fixed terminal block structure and flexible coil positioning
2Ease of operation
If bus bars or cables are used to connect coil ends to terminal block, then connection is achieved, but production time increases
Solution Approach 1:
The patent merges the connection terminals and switching functions into an integrated external connection position change unit that is directly mounted on the reactor body. This integration eliminates the need for separate bus bars or cables, combining multiple connection functions into a single compact unit that reduces assembly steps and production time while maintaining full connection capability
3Ease of operation
If bus bars or cables are used to connect coil ends to terminal block, then connection is established, but operation errors increase
Solution Approach 1:
The external connection position change unit incorporates self-identifying features and standardized connection interfaces that guide the assembly process. The unit automatically presents the correct connection terminals based on the coil arrangement, reducing reliance on operator judgment and minimizing the risk of connection errors, thereby improving operational reliability
Data Source
AI summary
A three-phase AC reactor according to an embodiment of the present invention includes three-phase coils that are not arranged in parallel, an input and output terminal block having an input and output unit having a parallel arrangement, and an external connection position change unit disposed between a coil end of each of the three-phase coils and the input and output terminal block to connect the coil end to the input and output terminal block.