Electric Motor Switching Assembly for Reconfigurable Phase Connections
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Solution Overview
Problem
Existing electric motor switching devices are complex, costly, and unreliable due to the need for multiple switches and complex wiring, which limits their efficiency and versatility, especially in applications requiring variable configurations without mechanical transmission.
Innovation Solution
A switching device with a fixed portion and moveable portions that can be configured in series, parallel, star, or triangle connections, driven by a single movement unit via a rolling contact system, reducing the need for complex wiring and minimizing wear, while allowing for efficient and flexible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple switches and complex wiring are used to achieve variable motor configurations, then the motor can operate in different electrical configurations (series, parallel, star, triangle), but the device complexity, cost, and reliability deteriorate
Solution Approach 1:
The patent merges multiple switching functions into a single moveable component that simultaneously connects or disconnects multiple phases. Instead of using separate switches for each phase connection, one moveable portion integrates all switching operations, dramatically reducing the number of individual switching elements while maintaining the ability to achieve series, parallel, star, and triangle configurations.
Solution Approach 2:
The moveable portion serves multiple functions: it acts as a switch, a connector, and a configuration selector all in one component. This universal element can establish different electrical configurations (series, parallel, star, triangle) and simultaneously disconnect phases when needed, replacing what would traditionally require multiple specialized components.
2Adaptability or versatility
If multiple independent switches are used for each phase configuration, then the motor can be precisely controlled in different configurations, but the manufacturing cost and device complexity increase
Solution Approach 1:
The patent combines multiple switching functions into a single moveable component that simultaneously connects or disconnects multiple phases. Instead of using separate switches for each phase connection, one moveable portion integrates all switching operations, dramatically reducing the number of individual switching elements while maintaining the ability to achieve series, parallel, star, and triangle configurations.
3Adaptability or versatility
If numerous switches and relays are used to achieve reconfigurable windings, then the motor can adapt to different operating conditions, but the bulk and dimensions of the device increase
Solution Approach 1:
The patent merges multiple switching functions into a single moveable component that simultaneously connects or disconnects multiple phases. Instead of using separate switches for each phase connection, one moveable portion integrates all switching operations, dramatically reducing the number of individual switching elements while maintaining the ability to achieve series, parallel, star, and triangle configurations.
4Productivity
If multiple independent moveable portions are used for each phase, then the motor can change configurations efficiently, but the device complexity and number of components increase
Solution Approach 1:
The patent merges multiple switching functions into a single moveable component that simultaneously connects or disconnects multiple phases. Instead of using separate switches for each phase connection, one moveable portion integrates all switching operations, dramatically reducing the number of individual switching elements while maintaining the ability to achieve series, parallel, star, and triangle configurations.
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 solution simplifies the design, reduces costs, and enhances reliability by allowing efficient configuration changes with minimal wear and heat generation, optimizing the electric motor's performance and ease of maintenance.
Implementation Method 1
driven by a single movement unit via a rolling contact system, reducing the need for complex wiring and minimizing wear
Data Source
AI summary
A switching device for an electric motor including at least one fixed portion equipped with a number of connecting elements that can be joined to the terminals of each phase, at least one first moveable portion that can be moved with respect to the fixed portion between at least one first position in which the phases are in a first electrical configuration and at least one second position, in which it is disconnected from the phases, at least one second moveable portion that can be moved with respect to the fixed portion between at least one first position in which the phases are in a second electrical configuration, separate from the first, and at least one second position, wherein it is disconnected from the phases, and a movement unit linked to the first and to the second moveable portions and which can be selectively switched, depending on the operating conditions of said electric motor, between at least a first configuration, in which the first moveable portion is placed in the first position and the second moveable portion is in the second position, and a second configuration, in which the first moveable portion is placed in the second position and the second moveable portion is in the first position.