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

A self-energy-extracting power unit hedging device common to half-bridge and full-bridge and its testing method

A technology of power unit and self-energy harvesting, which is applied in the direction of output power conversion device, measuring device, AC power input conversion to DC power output, etc., can solve the problems of poor operability in general engineering, and achieve universality, The effect of smooth charging

Active Publication Date: 2022-02-15
NARI TECH CO LTD +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods, in principle, can be equivalent to the rated working conditions, but the general engineering operability is not strong

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
  • A self-energy-extracting power unit hedging device common to half-bridge and full-bridge and its testing method
  • A self-energy-extracting power unit hedging device common to half-bridge and full-bridge and its testing method
  • A self-energy-extracting power unit hedging device common to half-bridge and full-bridge and its testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Embodiment 1: Hedging of the half-bridge power unit under test:

[0079] Working condition: The capacitance C of the DC support capacitor inside the power unit is 7.5mF, the inductance value of the reactor connected between the two power units is 1.0mH, the required DC rated voltage is 800V, and the effective value of the hedging current is I rms for 300A.

[0080] Step 1: Set the type of the power unit to be tested as half bridge on the control interface of the host computer, such as Figure 9 shown;

[0081] Step 2: Calculate the DC voltage fluctuation Δu according to Table 1 dc It is about 90V, the amplitude A of the AC component of the output voltage is set to 300V, and the I rms required phase difference about 25.7°;

[0082] Step 3: After running the adjustable DC voltage source and gradually adjusting the output voltage to 800V, the running light of the host is on, and the communication with the host computer is normal.

[0083] Step 4: Set the charging ti...

Embodiment 2

[0087] Embodiment 2: Hedging of the full-bridge power unit under test:

[0088] Working condition: the capacitance C of the internal DC support capacitor of the power unit is 5.6mF, the inductance of the reactor connected between the two half-bridge or full-bridge power units to be tested is 0.75mH, the required DC rated voltage is 750V, and the effective value of the hedge current is I rms 250A;

[0089] Step 1: Set the type of power unit to be tested as full bridge on the control interface of the host computer, such as Figure 9 shown;

[0090] Step 2: Calculate the DC voltage fluctuation Δu according to Table 1dc It is about 100V, the amplitude A of the AC component of the output voltage is set to 500V, and the I rms required phase difference about 9.5°;

[0091] Step 3: After running the adjustable DC voltage source, and gradually adjusting the output voltage to 750V, the running light of the host is on, and the communication with the host computer is normal;

[0092...

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 discloses a half-bridge and full-bridge universal self-energy-taking type power unit hedging device and a testing method thereof. The invention belongs to the technical field of power electronics; the invention can make two half-bridge or full-bridge power units to be tested operate under the rated voltage and current, quickly verify the performance of various aspects, and meet the needs of prototype verification or rapid batch detection of projects; in addition, The invention fully considers the self-energy characteristics of the power unit in the actual project, and the designed charging link can not only charge the uncharged unit stably, but also effectively connect with the subsequent high-current hedging link, without manual operation or changing the circuit topology; Various parameters for generating rated current under rated voltage can be quickly calculated; in addition, the present invention can be expanded to test multiple pairs of power units at the same time, only needing to increase the corresponding number of reactors.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a self-energy-taking type power unit hedging device common to half-bridges and full-bridges and a testing method thereof. Background technique [0002] Compared with traditional two-level or three-level neutral-point clamped converters, multi-level converters have a modular structure, are easy to expand, have small AC-side output harmonic content, and are easy to realize redundancy It has broad application prospects in flexible direct current transmission, high-voltage motor drive, high-voltage reactive power compensation and other fields. [0003] At present, there are more than ten kinds of basic constituent units and power units that constitute multilevel converters according to topology: half-bridge type, full-bridge type, flying-span capacitor type, clamp-type dual-module type, etc., among which half-bridge type And the full-bridge power unit occupies ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00H02M7/00
CPCG01R31/00H02M7/00
Inventor 程谦牟晓春隗华荣蒋真董艳博田安民梁帅奇王小红侯凯
Owner NARI TECH CO LTD