Power Supply Device Identification in DC Link Systems
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Solution Overview
Problem
The DC link system faces challenges in automatically determining the types of power-supply devices connected, requiring manual settings for individual devices and step-up ratios, which complicates centralized control and efficiency.
Innovation Solution
A power-supply device determination apparatus with connectors, voltage transducers, and a controller that measures output voltages to automatically identify and set step-up ratios for connected devices, enabling automatic determination and control of power-supply devices in a DC link system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual settings are used for individual power-supply devices and step-up ratios, then device identification accuracy is improved, but system complexity and operation difficulty increase
Solution Approach 1:
The system automatically identifies power-supply devices and determines step-up ratios without requiring manual user input. The determination apparatus measures output voltages and autonomously configures the DC/DC converters, allowing the system to serve itself rather than requiring user intervention for device identification and parameter setting.
Solution Approach 2:
The system dynamically determines step-up ratios based on measured output voltages from connected power-supply devices. By automatically adjusting the step-up ratio parameter according to the detected device type and voltage level, the system adapts to different configurations without manual intervention, resolving the contradiction between accurate identification and system complexity.
2Manufacturing precision
If manual settings are required for each power-supply device, then control precision is maintained, but ease of operation deteriorates
Solution Approach 1:
The determination apparatus measures the output voltages from connected power-supply devices and uses this feedback information to automatically identify device types and determine appropriate step-up ratios. This closed-loop feedback mechanism maintains precise control while eliminating manual configuration requirements, as the system continuously monitors and adjusts parameters based on actual device characteristics.
Solution Approach 2:
The system performs self-configuration by automatically identifying connected devices and setting optimal parameters without user intervention. The determination apparatus autonomously completes tasks that would otherwise require manual setup, thereby improving ease of operation while maintaining control precision through automated measurement and adjustment.
3Ease of operation
If automatic determination is implemented, then ease of operation is improved, but measurement precision requirements increase
Solution Approach 1:
The determination apparatus acts as an intermediary between the power-supply devices and the DC/DC converters. It measures output voltages with high precision and uses this information to automatically determine device types and configure step-up ratios, thereby enabling automatic operation while maintaining the necessary measurement precision through dedicated measurement functionality.
Solution Approach 2:
The system replaces manual mechanical configuration with automated electronic measurement and control. By using electronic voltage measurement and digital processing to determine device types and set parameters, the system achieves both ease of operation and measurement precision, substituting manual operations with automated electronic systems that can accurately measure and respond to electrical parameters.
4Measurement precision
If individual device identification is required, then device type accuracy is improved, but time consumption increases
Solution Approach 1:
The determination apparatus performs preliminary identification of power-supply devices by measuring their output voltages before connecting them to the DC link system. By determining device types and required step-up ratios in advance, the system eliminates time-consuming manual configuration during system startup or device addition, achieving both accurate identification and reduced time consumption through pre-configuration.
Solution Approach 2:
The system uses real-time voltage measurement feedback to rapidly identify device types and determine appropriate configurations. This immediate feedback mechanism allows for quick automatic determination without requiring time-consuming manual processes, as the system continuously monitors voltage levels and instantly responds by configuring the appropriate step-up ratios for connected devices.
Data Source
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AI summary
Provided is a determination apparatus and determination method for automatically determining the types of power-supply devices connected, in a power conversion apparatus employing a DC link. The determination apparatus includes: a plurality of connectors that may be connected with the plurality of power-supply devices; a plurality of voltage transducers connected in series with the plurality of connectors; a voltage measuring part configured to measure output voltage values having passed through the plurality of voltage transducers; and a controller determining the plurality of power-supply devices, based on the output voltage values measured by the voltage measuring part when the plurality of voltage transducers have the same step-up ratio, to thereby automatically determine the power-supply devices connected thereto.