Adjustable Power Supply Voltage Control Under Overload
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Solution Overview
Problem
Power supply equipment often experiences overloads, leading to overcurrent protection and failure to supply power to all connected devices, with existing solutions either turning off devices or limiting them to lowest working voltage, resulting in poor performance and power waste.
Innovation Solution
A power control method that determines if an overload device is present, adjusts the output voltage to the first target voltage within the allowable range, lower than the minimum working voltage of non-working overload devices, to maximize the output power of the power supply module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power supply equipment operates at maximum power output, then the power supply capability is improved, but the overload protection causes all load devices to be unable to work
Solution Approach 1:
The patent segments the load devices into working load devices and overload devices based on their power consumption characteristics. By identifying and separating the overload device(s) that cause the total power to exceed the power supply module's capacity, the system can selectively adjust voltage for specific devices rather than shutting down all loads, thus maintaining reliability while managing power constraints.
Solution Approach 2:
The patent applies different voltage adjustment strategies to different load devices based on their specific requirements. The control module identifies the minimum working voltage of each load device and adjusts the power supply module's output voltage locally to match the minimum requirements of working devices, ensuring each device receives appropriate power quality without affecting others.
2Loss of energy
If the output voltage is reduced to prevent overload, then the power waste is reduced, but the performance of non-overload devices deteriorates
Solution Approach 1:
The patent dynamically changes the output voltage parameter of the power supply module based on real-time detection of load device requirements. By adjusting the voltage to the minimum working voltage threshold identified for each device, the system reduces power waste from excessive voltage headroom while ensuring devices operate at acceptable performance levels, optimizing the balance between energy efficiency and productivity.
3Reliability
If the power supply module limits output to meet total power requirements, then the overload protection is activated, but the power supply equipment cannot fully utilize its performance
Solution Approach 1:
The patent implements a feedback mechanism where the control module continuously detects the working voltage and power consumption of each load device, compares the total power against the power supply module's capacity, and automatically adjusts the output voltage in response. This closed-loop feedback system enables the equipment to operate at or near its maximum capacity without triggering overload protection, fully utilizing its performance while maintaining reliability.
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
This method effectively utilizes the power supply equipment's performance by controlling the output voltage to the maximum output power, preventing power waste and ensuring better power requirements are met for electrical devices during overloads.
Implementation Method 1
power supply equipment (such as inverters, DC to DC conversion modules) are commonly used power equipment, which can carry out current or voltage conversion
Data Source
AI summary
The present disclosure provides a power control method and apparatus, a power supply system, and an energy storage power supply. The method provided in the present disclosure mainly includes: determining whether there is an overload device among all load devices of a power supply module, where output voltage of the power supply module is adjustable within an allowable voltage range; if it is determined that there is the overload device, acquiring first target output voltage of the power supply module, where the first target output voltage is within the allowable voltage range and is lower than and close to minimum working voltage of all non-working overload devices; regulating the output voltage of the power supply module to the first target output voltage. When power supply equipment is overloaded, this method uses a voltage regulation method to control an overloaded power supply output to its maximum output power.