Power Entry Module with Internal Distribution Network
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Solution Overview
Problem
Current Advanced TCA electronics equipment enclosures with one-to-one redundant power systems require multiple power entry modules (PEMs) due to limitations in power cable diameters, leading to increased costs and inflexibility in reconfiguring power distributions when blade configurations change.
Innovation Solution
A power entry module (PEM) with an internal power distribution network that allows a single power feed to be distributed to multiple isolated power branches, enabling flexible configuration without the need for external jumpers or straps, and accommodating varying power requirements by modifying the number of power lugs and distribution branches within the PEM housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power entry modules (PEMs) are used to distribute power to multiple blades, then power distribution capability is improved, but system cost and device complexity increase
Solution Approach 1:
The patent combines multiple power distribution functions into a single integrated PEM. This single PEM includes a power distribution network with multiple isolated power branches that can distribute power to multiple blades, eliminating the need for multiple separate PEMs while maintaining full power distribution capability.
Solution Approach 2:
The single PEM is designed with multi-functionality to perform the roles of multiple PEMs. It includes multiple power cable lugs for receiving power feeds and multiple isolated power branches for distributing power to different blades, making it a universal power distribution solution that replaces multiple specialized PEMs.
2Adaptability or versatility
If multiple power entry modules (PEMs) are used to accommodate different blade configurations, then adaptability to configuration changes is improved, but system cost increases
Solution Approach 1:
The patent implements dynamic reconfiguration capability within a single PEM by making the power branches reconfigurable. The isolation barriers between power branches can be modified or removed to allow power redistribution, enabling the system to adapt to different blade configurations without requiring physical replacement of PEMs or addition of external jumpers and straps.
3Ease of operation
If power cable diameter is limited, then cable flexibility is improved, but power feed current capacity deteriorates
Solution Approach 1:
The patent segments the power distribution function across multiple isolated power branches within the single PEM. Each power branch can handle a portion of the total power load, allowing the use of thinner power cables while still achieving high total power capacity through the combined capability of multiple branches.
Data Source
AI summary
A power entry module (PEM) that is used with an electronics equipment enclosure. The PEM has a housing adapted to be coupled to a shelf of the electronics equipment enclosure. The housing has at least one pair of power cable lugs accessible from an exterior of the housing for coupling the PEM to a pair of power cables associated with a power feed. The PEM also has a backplane connector for coupling the PEM to a blackplane of the electronics enclosure. A distribution network is disposed within the PEM housing and forms at least a pair of electrically isolated power distribution buses for coupling electrical power provided from the power cables to each of the power distribution branches. Each power distribution branch independently provides electrical power to at least one blade supported within the electronics equipment enclosure.