Unlock instant, AI-driven research and patent intelligence for your innovation.

High-power H-bridge power unit full-load test method and circuit

A technology of power unit and test method, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of unable to test the full load test of the H-bridge power unit module to be tested, unable to carry out experimental requirements, and long-term capital, etc., to achieve saving The effect of low electric energy and energy consumption and high test accuracy

Pending Publication Date: 2022-05-17
武汉华源新能电力工程有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the capacity of cascaded devices based on H-bridges is increasing (such as high-voltage SVG, high-voltage inverters), full-load aging tests are required before the devices leave the factory, but limited by the capacity of the established experimental platform, high-voltage testing cannot be performed. Experimental requirements for full load experiments
However, the method of increasing the capacity of the experimental platform through the expansion of the transformer requires not only a large amount of investment but also a long period of time for a platform construction.
[0003] At present, the most common full-load test method is to use two sets of SVG devices of the same capacity to tow each other, one emits inductive reactive power, and the other emits capacitive reactive power. Full load test of the H-bridge power unit module to be tested

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-power H-bridge power unit full-load test method and circuit
  • High-power H-bridge power unit full-load test method and circuit
  • High-power H-bridge power unit full-load test method and circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 and figure 2 , the embodiment of the present invention provides a high-power H-bridge power unit full-load test circuit, including the H-bridge power unit module to be tested and at least one reactive load, the control terminal of the H-bridge power unit module to be tested is connected to the control module, The two DC input terminals of the H-bridge power unit module to be tested are respectively connected to the DC positive pole and the DC negative pole. One AC output terminal of the H-bridge power unit module to be tested is connected to one end of the reactive load through an inductor, and the other end of the reactive load is One end is connected to the other AC output end of the H-bridge power unit module to be tested. When there are multiple reactive loads, the multiple reactive loads are connected in parallel. The number of reactive loads is set according to actual needs, for example, H-bridge power unit modules to be tested with different capaci...

Embodiment 2

[0039] see Figure 1 to Figure 3 , the embodiment of the present invention discloses a full-load test method of a high-power H-bridge power unit, comprising the following steps:

[0040]Connect the control terminal of the H-bridge power unit module to be tested with the control module, connect the two DC input terminals of the H-bridge power unit module to be tested with the DC positive pole and the DC negative pole respectively, and connect one AC terminal of the H-bridge power unit module to be tested The output end is connected to one end of the reactive load, and the other end of the reactive load is connected to another AC output end of the H-bridge power unit module to be tested;

[0041] The control module outputs PWM waves to drive the H-bridge power unit module to be tested, and simultaneously detects the inverter output current of the H-bridge power unit module to be tested;

[0042] Calculate the amplitude of the inverter output current of the H-bridge power unit m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a high-power H-bridge power unit full-load test method and circuit. The method comprises the steps that the output end of a to-be-tested H-bridge power unit module is connected with a reactive load; driving the to-be-detected H-bridge power unit module through PWM waves, detecting the inversion output current and voltage of the to-be-detected H-bridge power unit module, enabling the inversion output current of the to-be-detected H-bridge power unit module to be equal to a rated current value, and achieving the full-load current operation of the to-be-detected H-bridge power unit module; comparing the inversion AC output voltage with a rated voltage value, if the output voltage value is smaller than the rated value, reducing the reactive load, and if the output voltage value is higher than the rated value, increasing the reactive load; and when the to-be-tested H-bridge power unit module reaches a voltage and current full-load operation state, the to-be-tested H-bridge power unit module automatically enters an aging timing stage, and when the aging time reaches a set time, the to-be-tested H-bridge power unit module automatically quits the full-load test. According to the invention, the full-load test can be carried out on a single to-be-tested H-bridge power unit module, the test accuracy is high, and the energy consumption is low.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a full-load testing method and circuit of a high-power H-bridge power unit. Background technique [0002] As the capacity of cascaded devices based on H-bridges is increasing (such as high-voltage SVG, high-voltage inverters), full-load aging tests are required before the devices leave the factory, but limited by the capacity of the established experimental platform, high-voltage testing cannot be performed. Experimental requirements for fully loaded experiments. However, the method of increasing the capacity of the experimental platform through the expansion of the transformer not only needs to invest a large amount of money but also requires a long period of time for a platform construction. [0003] At present, the most common full-load test method is to use two sets of SVG devices of the same capacity to tow each other, one emits inductive reactive powe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R31/00G01R1/36
CPCG01R31/00G01R1/36
Inventor 方四安杜小刚胡东升
Owner 武汉华源新能电力工程有限公司