Power Conversion Device Frequency Fluctuation Authentication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power conversion devices that output high frequencies with high accuracy can be diverted to unintended purposes, and existing authentication methods require reconfiguration when the device is broken or replaced, leading to unnecessary downtime.
Innovation Solution
A power conversion device that incorporates a frequency fluctuation mechanism, where the output frequency randomly deviates from a predetermined accuracy at high frequencies, and an authentication unit ensures the device operates only when validated, allowing continued operation without high accuracy requirements if not validated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication is implemented to prevent unintended use, then security is improved, but device availability deteriorates due to reconfiguration requirements
Solution Approach 1:
The patent implements preliminary authentication during the manufacturing process, where authentication information is embedded in the device before it leaves the factory. This preliminary action ensures that when the device is deployed, authentication has already been performed, eliminating the need for reconfiguration during installation or replacement and maintaining high device availability while ensuring security
2Measurement precision
If high frequency output with high accuracy is enabled, then performance is improved, but risk of unintended use increases
Solution Approach 1:
The patent applies local quality by implementing frequency accuracy control at specific frequency ranges. The device provides high frequency accuracy only in low-frequency regions where unintended military applications are less likely, while intentionally reducing accuracy in high-frequency regions. This localized approach to quality ensures security against unintended use while maintaining adequate performance for legitimate applications
Solution Approach 2:
The patent changes the frequency output parameter dynamically based on authentication status. When authentication fails or is not performed, the device outputs frequency with deliberate inaccuracy or fluctuation. When authenticated, the device provides accurate frequency output. This parameter change approach prevents unintended use while maintaining usability for authorized applications
3Reliability
If frequency output is made inaccurate to prevent military use, then security is improved, but device functionality deteriorates
Solution Approach 1:
The patent implements dynamic frequency output control where the accuracy and stability of frequency output changes based on authentication status. The device dynamically adjusts its operational characteristics - providing accurate, stable frequency when authenticated and inaccurate, fluctuating frequency when unauthenticated. This dynamic approach maintains security while preserving full functionality for authorized users
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a power conversion device that is not unnecessarily stopped while preventing the power conversion device capable of accurate frequency control from being diverted to unintended purposes. For example, the power conversion device comprises: a DC voltage unit for smoothing DC voltage; a power conversion unit for converting DC voltage to AC voltage; an output control unit for controlling the output of said power conversion unit; and a frequency command unit for outputting a frequency command to said output control unit. When a command frequency output from said frequency command unit becomes a predetermined frequency or more, said output control unit controls said power conversion unit using a frequency obtained by fluctuating said command frequency as an output frequency.