Modular Motor Control System Integrating Protection Components
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Solution Overview
Problem
Conventional motor control systems have a large footprint due to discrete components and extensive wiring, leading to reduced efficiency, increased installation time, and potential failures.
Innovation Solution
A modular board-level motor control system integrating protection and control components onto a single printed circuit board (PCB) with a power converter and a standalone protection and control module, featuring front-end and back-end switching units and a bypass path for power control and short circuit protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If discrete components with separate housings are used, then each component can be independently controlled and protected, but the overall system footprint becomes large and bulky
Solution Approach 1:
The patent combines multiple discrete protection and control components (contactor, overload relay, thermal overload relay, and bypass assembly) into a single integrated housing. This merging eliminates the need for separate housings and reduces the overall system footprint while maintaining all individual component functions within the unified structure.
2Reliability
If extensive wiring is provided between discrete components, then electrical connectivity is established, but installation time increases and accessibility is hindered
Solution Approach 1:
By integrating multiple components into a single housing with internal electrical connections, the patent eliminates the need for extensive external wiring between discrete components. This reduces installation time and improves accessibility while maintaining reliable electrical connectivity through pre-established internal connections.
3Reliability
If extensive wiring is provided between discrete components, then electrical connectivity is established, but the potential for failure due to wiring increases
Solution Approach 1:
The integration of components into a single housing with internal connections eliminates numerous external wiring connections that are prone to failure. This merging reduces the potential points of failure associated with wiring and connectors while maintaining reliable electrical connectivity through robust internal pathways.
4Adaptability or versatility
If discrete components are used, then component functionality is maintained, but the overall system efficiency is reduced
Solution Approach 1:
The patent integrates multiple protection and control components into a single unified system, reducing energy losses associated with multiple separate housings and extensive wiring. This merging improves overall system efficiency while maintaining all individual component functionalities through their integrated design.
Data Source
AI summary
A motor control system for selectively controlling power from a power source to a load includes a PCB structure and a power converter affixed to the PCB structure that is operable to provide a controlled output power to the load. The motor control system also includes a standalone protection and control module mounted onto the at least one PCB structure so as to be electrically coupled therewith, the standalone protection and control module further including a front-end switching unit comprising a plurality of switching devices operable to selectively interrupt and control power flow from the power source to the power converter and to a bypass path that bypasses the power converter and a back-end switching unit positioned downstream from the front-end switching unit and comprising a plurality of switching devices operable to selectively interrupt power flow from the power converter and the bypass path to the load.