Integrated Power Conversion for Seamless Supply-Load Switching
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Solution Overview
Problem
Conventional AC/DC power supply and electronic load systems are typically independent and cannot be integrated due to differences in control modes, preventing hardware sharing and efficient mode switching without system shutdown.
Innovation Solution
An integrated power system comprising an AC/DC conversion module, a DC/DC conversion module, and a DC/AC conversion module, with a microprocessor, power element, and detecting circuits, allowing digital control for switching between power supply and electronic load modes without hardware modification or system reboot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If AC/DC power supply and electronic load are designed as independent devices, then each device can be optimized for its specific function, but hardware components cannot be shared and system complexity increases
Solution Approach 1:
The patent combines AC/DC power supply and electronic load into a single integrated device by merging their respective power conversion modules. The AC/DC conversion module and DC/AC conversion module share common hardware resources including rectifier bridges, filtering capacitors, control circuits, and housing, thereby reducing system complexity while maintaining functional optimization for both power supply and electronic load operations
Solution Approach 2:
The integrated device achieves multi-functionality by enabling the same hardware platform to operate in two distinct modes: power supply mode (converting AC to DC) and electronic load mode (converting DC to AC). The control module dynamically reconfigures the power conversion modules to perform different functions, allowing a single device to replace what would traditionally require two separate devices
2Adaptability or versatility
If mode switching is implemented in conventional systems, then the system can change between power supply and electronic load functions, but the system must be shut down for switching and hardware replacement is required
Solution Approach 1:
The integrated device enables continuous operation during mode switching by eliminating the need to shut down the system. The control module seamlessly transitions between power supply mode and electronic load mode while maintaining power conversion operations, ensuring that the useful action of power conversion continues uninterrupted regardless of mode changes
3Reliability
If two separate power converters are used for power supply and electronic load, then each converter can be optimized independently, but the integration is superficial and only a few components are shared
Solution Approach 1:
The patent achieves deep integration by merging the power conversion modules of AC/DC power supply and electronic load into a unified architecture. Instead of merely connecting two independent converters, the system integrates the rectifier bridges, filtering capacitors, power semiconductor switches, and control circuits into a single coordinated structure where components serve dual purposes in both operational modes
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
Enables seamless switching between AC/DC power supply and electronic load modes within a single device, sharing hardware components and maintaining continuous operation, with precise voltage and current control for both modes.
Implementation Method 1
an AC/DC conversion module (2), a DC/DC conversion module (3) and a DC/AC conversion module (4)
Implementation Method 2
a DC/DC conversion module (3) electrically coupled to the AC/DC conversion module (2)
Implementation Method 3
a DC/AC conversion module (4) electrically coupled to the DC/DC conversion module (3) and a device under test
Data Source
AI summary
Systems and methods for switching between a power supply mode and an electronic load mode are disclosed. For switching from the power supply mode to the electronic load mode, the method comprises the steps of: deactivating a power element; activating a current control module and a phase-locked loop to obtain a voltage phase of a device under test; calculating a turn-on amount of the power element according to a current setting value and the voltage phase; and causing the power element to generate a load current for the device under test. For switching from the electronic load mode to the power supply mode, the method comprises the steps of: deactivating the power element; activating a voltage control module; calculating the turn-on amount of the power element according to a voltage setting value; and causing the power element to input a corresponding voltage to the device under test.