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

Input power control circuit of transformer rectifier

A technology of transformer rectifier and control circuit, which is applied in the direction of converting AC power input into DC power output, output power conversion device, electrical components, etc., which can solve the problem of low stability and achieve improved stability, high conversion efficiency, Effect of low input current harmonic content

Pending Publication Date: 2021-03-02
TIANJIN JINHANG COMP TECH RES INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a transformer rectifier input power control circuit to solve the problem that the output voltage of the current airborne transformer rectifier is open-loop control and the stability is low

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
  • Input power control circuit of transformer rectifier
  • Input power control circuit of transformer rectifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] Although the traditional 12-pulse transformer rectifier can effectively reduce the harmonic content of the input current, its output voltage will decrease with the increase of the output current, especially when the output current is large, this phenomenon will be more serious. Now design a circuit that can stabilize the output voltage by adjusting the input current of the 12-pulse transformer rectifier. When the output voltage decreases, the input current of the transformer is forced to increase through the control circuit. Under the condition of constant output load, the output voltage increases. On the contrary, when the output voltage increases, the input current of the transformer is forced to decrease throu...

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 an input power control circuit of a transformer rectifier. The input power control circuit comprises a main transformer, an auxiliary transformer, four three-phase rectifier bridges and a control circuit, after an input alternating current power supply enters the circuit, the input alternating current power supply firstly enters a primary winding of the main transformer, flows out of a winding of the main transformer and then enters an input end of the auxiliary transformer, a triangular winding and a star-shaped winding of a secondary side of the main transformer are respectively connected with one of the three-phase rectifier bridges, a triangular winding and a star-shaped winding of the secondary side of the auxiliary transformer are respectively connected with one of the three-phase rectifier bridges, the two three-phase rectifier bridges connected with the secondary side of the auxiliary transformer are connected to the control circuit, the control circuitdetects the output voltage, and an output end of the control circuit is connected to the output ends of the two three-phase rectifier bridges on the secondary side of the main transformer, so as to conduct DC output. The input power factor is high, the input current harmonic content is low, and the output voltage is stable; and because the output voltage is in closed-loop control, the output voltage change is low in adjustment rate along with the change of the input voltage.

Description

technical field [0001] The invention belongs to the technical field of airborne transformer rectifiers, and relates to an input power control circuit of a transformer rectifier, in particular to a control circuit for stabilizing the output voltage of a multi-pulse voltage rectifier. Background technique [0002] In the current three-phase AC-DC rectification technology, the traditional uncontrolled or phase-controlled three-phase rectification circuit has brought great harm to the aircraft power grid and airborne electrical equipment due to its large harmonic content and low power factor. High power factor rectification schemes mainly include three-phase PWM rectification technology, active filter technology, ladder wave synthesis technology (zigzag transformer), and multi-pulse rectification technology. Due to the high input power frequency (400Hz) of the airborne secondary power supply, the multi-pulse rectification technology is still not at a disadvantage in terms of vol...

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): H02M7/219H02M1/42H02M1/12
CPCH02M7/219H02M1/4233H02M1/12Y02B70/10
Inventor 张海宝
Owner TIANJIN JINHANG COMP TECH RES INST