Distributed Low Voltage Power System with Secondary Controller
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Solution Overview
Problem
Existing low voltage distributed power systems lack efficient mechanisms to transition from primary power sources to secondary power sources during power outages, leading to disruptions in critical systems like lighting and security systems.
Innovation Solution
A distributed low voltage power system with a primary power source and a secondary power supply that includes a controller and energy storage device, which stores input signals during normal operation and distributes reserve signals during power outages, ensuring continuous operation of low voltage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a primary power source is used to distribute line voltage power, then the system operates normally during first mode of operation, but the system fails to distribute power during second mode of operation (power outage)
Solution Approach 1:
The secondary power supply performs preliminary action by storing input signals in the energy storage device during the first mode of operation (normal operation). This advance preparation ensures that when the primary power source fails, the stored energy can immediately support the load without interruption, resolving the contradiction between reliability and complexity by preparing backup capacity in advance rather than reacting to failures
Solution Approach 2:
The secondary power supply acts as an intermediary between the primary power source and the load. It includes a controller and energy storage device that mediate the power transition, smoothly switching from primary to secondary power when needed. This intermediary structure improves reliability during outages while maintaining manageable system complexity through controlled integration
2Reliability
If the system transitions from primary to secondary power source during outages, then continuous operation is maintained, but transition disruptions occur in critical systems
Solution Approach 1:
The controller in the secondary power supply uses feedback mechanisms to monitor the status of the primary power source and the energy storage device. This feedback control enables the system to detect power failures and initiate the transition to secondary power in a controlled manner, maintaining continuous operation while minimizing transition disruptions through real-time monitoring and adjustment
Solution Approach 2:
The power system employs dynamic characteristics by allowing the secondary power supply to activate and distribute reserve signals based on real-time conditions. The system transitions from a static primary-power-dependent state to a dynamic state where the secondary power supply can engage or disengage based on power availability, ensuring smooth transitions and continuous operation
3Reliability
If energy storage device stores input signal during normal operation, then reserve signal is available during outages, but system complexity increases
Solution Approach 1:
The secondary power supply merges multiple functions into a single integrated unit: the energy storage device stores input signals, the controller manages power transitions, and the output channel distributes reserve signals. This consolidation improves power availability during outages while managing complexity by combining related components and functions into a cohesive subsystem rather than separate distributed elements
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 system ensures seamless transition from primary to secondary power sources, maintaining functionality of low voltage devices during outages and reducing downtime, while complying with safety standards and regulations.
Implementation Method 1
the energy storage device stores the input signal, where the energy storage device converts the input signal to a reserve signal
Data Source
AI summary
A distributed low voltage power system can include a primary power source that distributes line voltage power during a first mode of operation and fails to distribute the line voltage power during a second mode of operation. The system can also include a secondary power supply coupled to the primary power source, where the secondary power supply includes a controller and an energy storage device. The system can further include a power distribution module (PDM) coupled to the primary power source and the secondary power supply, where the PDM includes a first power transfer device and a first output channel. The system can also include at least one first LV device coupled to the first output channel of the PDM, where the at least one first LV device operates using a reserve LV signal based on the reserve signal during the second mode of operation.