DC/DC Converter Switching to Prevent Backup Energy Drain
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Solution Overview
Problem
Existing electrical power supply systems, such as voltage stabilization systems and backup power supply modules, do not effectively manage the discharge of charge storage mediums when the bus voltage drops to zero during start/stop cycles, leading to energy depletion in the charge storage medium.
Innovation Solution
An electrical power supply system with an electronic controller that controls a DC/DC converter and current sensor to disconnect the converter from the power bus when the current exceeds a predetermined threshold or when the bus voltage falls below a certain threshold, preventing unintended discharge of the charge storage medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the DC/DC converter is connected to the power bus to recharge the charge storage medium, then the charge storage medium can be recharged when bus voltage rises above the charge storage medium voltage, but the charge storage medium voltage will drain to the power bus when bus voltage drops below the charge storage medium voltage, depleting energy
Solution Approach 1:
The electronic controller monitors bus voltage and proactively disconnects the DC/DC converter from the power bus when bus voltage drops below the charge storage medium voltage, before reverse current can deplete the charge storage medium. This preliminary protective action prevents energy loss while maintaining the system's ability to provide backup power when needed.
Solution Approach 2:
The electronic controller continuously monitors the bus voltage and charge storage medium voltage to determine when to connect or disconnect the DC/DC converter. This feedback mechanism ensures the converter operates only when bus voltage is above the charge storage medium voltage, preventing reverse current flow and energy depletion while maximizing recharging opportunities.
2Ease of operation
If the DC/DC converter allows current flow whenever voltage conditions permit, then the system operates automatically without complex control, but the converter cannot prevent unintended discharge during low voltage conditions
Solution Approach 1:
The DC/DC converter incorporates integral switching devices that automatically connect or disconnect based on voltage conditions monitored by the electronic controller. The system serves itself by using its own voltage measurements to control its operation, eliminating the need for external control systems while preventing unintended discharge.
Solution Approach 2:
The switching devices are integrated directly into the DC/DC converter structure, combining the power conversion function with the switching control function. This integration reduces overall system complexity while maintaining automatic operation based on voltage conditions.
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 effectively prevents energy depletion in the charge storage medium by disconnecting the DC/DC converter from the power bus during low voltage conditions, thereby preserving energy for when it is needed to provide backup power.
Implementation Method 1
a DC/DC converter to recharge the charge storage medium
Data Source
AI summary
An electrical power supply designed to supply electrical power to an electrical power bus is presented herein. The electrical power supply comprises an electronic controller connected to a DC/DC converter and a current sensor for measuring the converter's current. The DC/DC converter is linked to a power conductor of the electrical power bus through a first switch and to a ground conductor through a second switch. The electronic controller is programmed to manage the first and second switches, disconnecting the DC/DC converter from the power bus when the current surpasses a predetermined threshold. This innovative system ensures efficient power management and protection against overcurrent situations in electrical power supply applications.