US 12,748,473 B2Granted

Correction method for stabilizing output of VR inverter and related assembly

AssigneeSuzhou Metabrain Intelligent Technology Co., Ltd.

InventorHui Sun

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Abstract

Disclosed are a correction method and a related assembly. According to a solution, loading is performed on an electronic load, and during each loading, a digital multimeter collects the output voltage of a VR inverter; after loading is ended, it is determined whether the average voltage value of the output voltage collected by the digital multimeter is within a preset voltage range, so as to determine whether the VR inverter stably performs output; and when the average voltage value is not within the preset voltage range, it can be determined that the output of the VR inverter is unstable, and it is needed to correct the VR inverter, i.e., the correction of the VR inverter is realized by adjusting the impedance of a digital potentiometer arranged between the output end and the feedback end of the VR inverter.

Claims19

Dependent claims

A correction method, wherein the correction method is applied to a processor, a correction device comprises an electronic load and a digital multimeter both connected to an output terminal of a VR inverter in a server, and a digital potentiometer provided between the output terminal and a feedback terminal of the VR inverter, a control terminal of the digital potentiometer is connected to a BMC in the server, a first data exchange terminal of the processor is connected to a data exchange terminal of the BMC, a second data exchange terminal of the processor is connected to a control terminal of the electronic load and an output terminal of the digital multimeter, and the method comprises:

load-pulling the electronic load at a predetermined frequency, a predetermined step and a predetermined maximum load-pull current to load-pull a current of the VR inverter until a load-pull current of the VR inverter is the predetermined maximum load-pull current;
determining whether an average voltage value of output voltage of the VR inverter collected by the digital multimeter after each load-pulling of the electronic load is within the predetermined voltage range at the end of load-pulling;
and
adjusting an impedance of the digital potentiometer by the BMC until the average voltage value is within the predetermined voltage range when the average voltage value of output voltage of the VR inverter collected by the digital multimeter is not within the predetermined voltage range;
wherein the load-pulling the electronic load at the predetermined frequency, the predetermined step and the predetermined maximum load-pull current to load-pull the current of the VR inverter until the load-pull current of the VR inverter is the predetermined maximum load-pull current comprises:
setting a number of times for a first load-pulling as a current number of times for load-pulling;
load-pulling the electronic load for the current number of times;
determining current output voltage of the VR inverter collected by the digital multimeter;
determining whether the load-pull current of the VR inverter is the predetermined maximum load-pull current;
setting next number of the current number of times as the current number of times and returning to step “load-pulling the electronic load for the current number of times” after a predetermined time when the load-pull current of the VR inverter is not the predetermined maximum load-pull current, wherein a difference between the load-pull current of the VR inverter after load-pulling for the current number of times and the load-pull current of the VR inverter after load-pulling for previous number time of the current number of times is the predetermined step;
and
ending load-pulling when the load-pull current of the VR inverter is the predetermined maximum load-pull current.

9 more elements

A correction system, wherein the correction system is applied to a processor, a correction device comprises an electronic load and a digital multimeter both connected to an output terminal of a VR inverter in a server, and a digital potentiometer provided between the output terminal and a feedback terminal of the VR inverter, a control terminal of the digital potentiometer is connected to a BMC in the server, a first data exchange terminal of the processor is connected to a data exchange terminal of the BMC, a second data exchange terminal of the processor is connected to a control terminal of the electronic load and an output terminal of the digital multimeter, and the system comprises:

a load-pull unit for load-pulling the electronic load at a predetermined frequency, a predetermined step and a predetermined maximum load-pull current to load-pull a current of the VR inverter until a load-pull current of the VR inverter is the predetermined maximum load-pull current;
a determination unit for determining whether an average voltage value of output voltage of the VR inverter collected by the digital multimeter after each load-pulling of the electronic load is within the predetermined voltage range at the end of load-pulling;
and
an adjustment unit for adjusting an impedance of the digital potentiometer by the BMC until the average voltage value is within the predetermined voltage range when the average voltage value of output voltage of the VR inverter collected by the digital multimeter is not within the predetermined voltage range;
wherein the load-pull unit is further configured for:
setting a number of times for a first load-pulling as a current number of times for load-pulling;
load-pulling the electronic load for the current number of times;
determining current output voltage of the VR inverter collected by the digital multimeter;
determining whether the load-pull current of the VR inverter is the predetermined maximum load-pull current;
setting next number of the current number of times as the current number of times and returning to step “load-pulling the electronic load for the current number of times” after a predetermined time when the load-pull current of the VR inverter is not the predetermined maximum load-pull current, wherein a difference between the load-pull current of the VR inverter after load-pulling for the current number of times and the load-pull current of the VR inverter after load-pulling for previous number time of the current number of times is the predetermined step;
and
ending load-pulling when the load-pull current of the VR inverter is the predetermined maximum load-pull current.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/705,934Filed 22 Dec 2022
Priority: CN 202210266998.418 Mar 2022
Published: US 2024/0419228 A119 Dec 2024
Granted: 29 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06F 1/26
Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00: power supply means, e.g. regulation thereof
G01R 19/1659
Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups…:…
G01R 19/2503
Using digital measurement techniques: for measuring voltage only, e.g. digital volt meters
H02M 7/44
Conversion of DC power input into AC power output without possibility of reversal: by static converters