Standard harmonic current source based on pulse driving alternating current quantum voltage and standard harmonic current source output method

By adopting a pulse-driven AC quantum voltage technology in a standard harmonic current source, combined with a JAWS quantum voltage generator and a precision feedback shunt network, high-precision control of current output is achieved, solving the problem of limited accuracy in the prior art, and significantly improving the stability and accuracy of current output.

CN120161900AActive Publication Date: 2025-06-17MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD
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Patent Information

Application Number
CN202510302241.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-14
Publication Date
2025-06-17
Estimated Expiration
2045-03-14

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Abstract

The invention discloses a standard harmonic current source based on pulse driving alternating current quantum voltage and a standard harmonic current source output method, the standard harmonic current source generates a reference voltage signal through a JAWS quantum voltage generator, a transconductance amplifier generates a power amplification output current according to the reference voltage signal, and a main controller reads the power amplification output current and outputs the power amplification output current to the standard harmonic current source. The main controller judges the current interval to which the power amplifier belongs, switches the gear of the linked switch, drives the transconductance amplifier to adjust the transformation ratio, controls the precise feedback shunt network to switch the precise resistor, calculates a target voltage value by combining the target transformation ratio, the power amplifier current and a target resistance value, generates a code, and sends the code to the JAWS quantum voltage generator; the JAWS quantum voltage generator outputs a corresponding standard harmonic voltage signal after decoding, the first operational amplifier compares the standard harmonic voltage with the reference voltage signal, generates an error signal and feeds back the error signal to the transconductance amplifier, and then adjusts the output current of the power amplifier to form closed-loop control so as to realize high-precision harmonic current output.
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Citation Information

Patent Citations

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  • Method and device for acquiring output current of direct current source

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  • Three -phase harmonic standard source

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  • Power supply

    JP2000116134A

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