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

A controllable rectification method, device and power electronic equipment

A technology for power electronics and rectifier devices, applied in the fields of controllable rectification methods, devices and power electronic equipment, can solve problems such as failure of power electronic equipment to work normally, sampling voltage distortion, controllable rectification output current distortion, etc. effect of work

Active Publication Date: 2019-11-15
GREE ELECTRIC APPLIANCES INC +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the input voltage is distorted due to severe interference or other reasons, the sampling voltage will be distorted accordingly, and the output current of the controllable rectification will be severely distorted due to the influence of the distorted sampling voltage, such as figure 1 As shown, at this time, the overcurrent protection of the equipment will be caused, which will cause the above power electronic equipment to fail to work normally.

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 controllable rectification method, device and power electronic equipment
  • A controllable rectification method, device and power electronic equipment
  • A controllable rectification method, device and power electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 2 It is a flow chart of the steps of a controllable rectification method provided by the embodiment of the present application.

[0043] like figure 2 As shown, this embodiment provides a controllable rectification method, which is applied to power electronic equipment, such as high-power frequency converters, electronic electronic transformers, DC transformers, active power factor correctors, etc., at least Including a controllable rectification circuit, the controllable rectification method is used to specifically control the controllable rectification circuit, specifically including the following steps:

[0044] S101: Detect the input voltage of the controllable rectification circuit.

[0045] The input voltage here can be regarded as the input voltage of the entire power electronic equipment, that is, the input voltage of the power grid. The working environment of the power grid is generally harsh, and it is easy to be interfered by lightning and high-pow...

Embodiment 2

[0065] Image 6 It is a structural block diagram of a controllable rectification device provided by the embodiment of the present application.

[0066] like Image 6 As shown, this embodiment provides a controllable rectification device, which is applied to power electronic equipment, such as high-power frequency converters, electronic transformers, DC transformers, active power factor correctors, etc., at least It includes a controllable rectification circuit, and the controllable rectification device is used to specifically control the controllable rectification circuit, specifically including a phase detection module 10 , a voltage reconstruction module 20 , a voltage correction module 30 and a rectification control module 40 .

[0067] The phase detection module is used to detect the input voltage of the controllable rectification circuit.

[0068] The input voltage here can be regarded as the input voltage of the entire power electronic equipment, that is, the input vol...

Embodiment 3

[0089] This embodiment provides a power electronic device, which is specifically a high-power frequency converter, an electronic electronic transformer, a DC transformer, an active power factor corrector, etc., at least including a controllable rectification circuit and a controllable rectification device , the controllable rectification device is used to specifically control the controllable rectification circuit.

[0090] The controllable rectification device is specifically used for detecting the phase angle of the input voltage of the controllable rectification circuit; reconstructing the input voltage according to the phase angle and the amplitude of the input voltage to obtain a reconstructed voltage; sampling the input voltage according to the reconstructed voltage The voltage is corrected to obtain a reference voltage of the input voltage; the controllable rectification circuit is controlled according to the reference voltage to rectify the input voltage. The reconstru...

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 application provides a controllable rectification method and device and power electronic equipment. The method and device are applied to the power electronic equipment, and the power electronic equipment comprises a controllable rectification circuit. The controllable rectification method specifically comprises the following steps: detecting a phase angle of an input voltage of the controllable rectification circuit; reconstructing the input voltage according to the phase angle and an amplitude of the input voltage to obtain the reconstructed voltage; modifying a sampling voltage of the input voltage according to the reconstructed voltage to obtain a reference voltage of the input voltage; controlling the controllable rectification circuit to rectify the input voltage according to thereference voltage. The reconstructed voltage is obtained through a voltage reconstruction method, and the sampling voltage is replaced with the reconstructed voltage as the reference voltage of the equipment under the situation that the input voltage is interfered, and a problem that the power electrical equipment cannot work as normal when the input voltage is distorted.

Description

technical field [0001] The present application relates to the technical field of power electronics, and more specifically, to a controllable rectification method, device and power electronic equipment. Background technique [0002] Reliability is an important indicator of power electronic equipment such as high-power inverters, electronic transformers, DC transformers, and active power factor correctors. For the above-mentioned power electronic devices, there are controllable rectification circuits and inverter circuits. In the process of controllable rectification of the input current, the stable operation of the controllable rectification circuit depends on the sampling of the input voltage, that is, the stable sampling voltage is The key factor for the stable operation of the controllable rectification circuit. When the input voltage is distorted due to severe interference or other reasons, the sampling voltage will be distorted accordingly, and the output current of the...

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): H02M7/12
Inventor 李燕郭伟林张良浩乔一伦
Owner GREE ELECTRIC APPLIANCES INC