Transformer Voltage Detection Frequency Correction

The patent implements a feedback mechanism by detecting the actual frequency of the alternating-current power supply and using this information to select appropriate correction coefficients. The correction unit adjusts the voltage detection result based on the detected frequency, creating a closed-loop system that compensates for the ferrite core transformer's frequency-dependent impedance variations, thereby resolving the contradiction between using lightweight ferrite material and maintaining detection accuracy

The patent changes the detection parameters by introducing frequency as an additional measured parameter and using it to select correction coefficients from a set of pre-determined values. Instead of relying on a single fixed detection method, the system adapts the detection parameters (correction coefficients) based on the operating frequency, allowing accurate voltage detection across different frequency conditions while using the lightweight ferrite core transformer

The patent introduces dynamics into the previously static voltage detection system by making the correction coefficients variable rather than fixed. The system dynamically adjusts the correction coefficients based on the detected frequency, transforming the detection method from a rigid, frequency-independent approach to a flexible, frequency-adaptive approach that maintains accuracy across varying operating conditions

The patent applies preliminary action by pre-calculating and storing multiple sets of correction coefficients corresponding to different frequency ranges before actual operation. When the system operates, it simply needs to detect the current frequency and select the appropriate pre-prepared correction coefficients, avoiding the need for real-time complex calculations and enabling rapid adaptation to frequency changes