IGBT rectification circuit and IGBT rectification circuit control method
A rectifier circuit and circuit technology, applied in emergency protection circuit devices, AC power input conversion to DC power output, electrical components, etc., can solve problems such as high cost of rectifier circuits, low input power factor, large current harmonics, etc. Achieve the effect of simple structure, low cost and stable output
Inactive Publication Date: 2014-02-26
GUANGDONG ZHICHENG CHAMPION GROUP
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the introduction of transformers, the cost of rectifier circuits has remained high, and most rectifier circuits on the market now have low input power factors and large current harmonics, which cause great pollution to the power grid. Low-cost rectifier circuits that can output stable DC voltage have always been the research direction of engineers
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0024] Please refer to figure 1 , which is a schematic circuit diagram of the IGBT rectifier circuit provided by the present invention.
[0025] An IGBT rectifier circuit, including a three-phase LC filter LC1 composed of a three-phase inductor L1 and a capacitor bank C1 connected in parallel, a signal acquisition circuit formed by connecting an input...
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
Login to View More Abstract
The invention relates to the technical field of a rectification circuit, and especially relates to an IGBT rectification circuit and a control method thereof. The input end of a current detector A1 is connected with three-phase commercial power; the output end of the current detector A1 is connected with the input end of a three-phase LC filter LC1 through a signal acquisition circuit; the output end of the three-phase LC filter LC1 is connected with the AC side of a three-phase IGBT inversion bridge circuit; the DC side of the three-phase IGBT inversion bridge circuit is connected with a load; one end of an IGBT rectification drive circuit is connected with an IGBT rectification control circuit; the other end of the IGBT rectification drive circuit is connected with pulse signal input end of the three-phase IGBT inversion bridge circuit; and the IGBT rectification control circuit is also respectively connected with the current detector A1 and the signal acquisition circuit. According to the invention, the IGBT rectification circuit is formed by integrating the three-phase LC filter LC1 and the three-phase IGBT inversion bridge circuit thereinto, the output of the rectification circuit is controlled according to current values and voltage values, and only a quite small number of parts are needed for realizing stable DC bus voltage output, so that the structure is simple, the output is stable, the cost is low, the pollution to an electrical network is small, and the circuit and method provided by the invention are safe and effective.
Description
technical field [0001] The invention relates to the technical field of rectification circuits, in particular to an IGBT rectification circuit and a control method for the IGBT rectification circuit. Background technique [0002] A rectifier circuit is a circuit that converts AC power into DC power. The three-phase rectifier circuit mainly completes the conversion of three-phase AC power to DC power, and is often used in electroplating equipment, electrolysis equipment, DC welding machines, charging equipment and UPS power supplies. Most rectification circuits are composed of transformers, rectification main circuits and filters. It is widely used in the fields of DC motor speed regulation, generator excitation regulation, electrolysis, electroplating and other fields. However, due to the introduction of transformers, the cost of rectifier circuits has remained high, and most rectifier circuits on the market now have low input power factors and large current harmonics, whic...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02M1/12H02H7/125
Inventor 李民英匡金华
Owner GUANGDONG ZHICHENG CHAMPION GROUP