Modular Three-Phase Motor Connector for Delta-Star Adaptability
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Solution Overview
Problem
Existing motor control arrangements for three-phase electric motors are limited to specific connection circuits, requiring multiple devices for different operating modes, such as delta and star modes, which lacks adaptability and versatility.
Innovation Solution
A modular connector arrangement with a main receptacle containing terminal blocks and bus bars that can transmit three-phase power from external supply lines or an inverter, along with auxiliary receptacles for monitoring and control, allowing for removable and interchangeable modules to facilitate operation in both delta and star modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single connection device is designed for a specific connection circuit, then the device structure is simple and easy to manufacture, but it cannot adapt to different operating modes (delta or star mode) requiring multiple devices
Solution Approach 1:
The connection device is designed with a universal structure that can perform multiple functions by accepting different connection configurations. The receptacle can accommodate both delta and star connection types through a standardized interface, allowing a single device to replace multiple specialized devices while maintaining structural simplicity through standardization
2Adaptability or versatility
If multiple connection devices are provided for different control circuits, then each device can be optimized for its specific function, but the overall system complexity increases and adaptability is reduced
Solution Approach 1:
The connection device is segmented into modular components including a standardized receptacle and interchangeable connection elements. This segmentation allows the system to maintain a single universal receptacle while enabling different connection configurations through modular attachments, reducing the number of devices needed while preserving versatility
3Adaptability or versatility
If a fixed connection configuration is used, then the device structure is simple, but it lacks flexibility for optional expansion and different connection situations
Solution Approach 1:
The connection device incorporates dynamic configurability through removable and interchangeable modular units. The standardized receptacle accepts different connection configurations that can be changed as needed, providing flexibility and optional expansion while keeping the base structure simple and the added complexity only when and where needed
Data Source
AI summary
A connector arrangement is provided for supplying electric power to a three-phase motor to produce motor operation in either a delta mode or a star mode, use being made of modular units that are removably mounted within a chamber contained in an outer frame that is secured to the motor housing. A power supply module arranged within the chamber includes a main receptacle containing a stack of terminal blocks having bus bars that transmit to the motor windings three-phase power that is supplied either by external power supply lines that extend into the chamber though openings contained in the side walls of the outer frame, or from an inverter arranged externally of the outer frame. Auxiliary receptacles are removably connected with the external surface of the main receptacle for monitoring the operating condition of the motor, or for controlling a motor operation, such as braking.