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Direct current transformer type multi-level output direct-current electrical source for quick trace reference

A DC transformer, tracking and reference technology, applied in the field of power electronics, can solve the problems of inconvenience, complexity, and high cost, and achieve the effects of convenient expansion, optimized output level, simple and flexible structure

Inactive Publication Date: 2013-04-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this scheme, every time an additional level is output, an additional DC power supply needs to be connected in parallel. If more DC levels are required, the number of DC power supplies will increase linearly at the same time, which is too complicated. In actual engineering, the cost is relatively high. High, it is inconvenient to realize

Method used

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  • Direct current transformer type multi-level output direct-current electrical source for quick trace reference
  • Direct current transformer type multi-level output direct-current electrical source for quick trace reference
  • Direct current transformer type multi-level output direct-current electrical source for quick trace reference

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Embodiment Construction

[0019] circuit such as figure 1 shown. The positive group and the negative group of the DC transformer are symmetrical, and the connection method of the positive group is introduced.

[0020] The main body is composed of a DC power supply, a DC transformer, a rectifier bridge, a filter capacitor, a switch tube, and a diode. The connection method is: the primary side of the DC transformer is connected to the DC power supply, and the secondary sides of the transformer are respectively connected to D 11 -D 14 、D 21 -D 24 ...D k1 -D k4 A full-bridge rectifier circuit composed of C 1 、C 2 ...C k respectively connected in parallel to the output end of the rectifier bridge, the switch tube S k The drain is connected to the output terminal of the rectifier bridge, and the source is connected to the output resistor R (the highest voltage branch has no circulation problem, no diode is needed), S 1 , S 2 , S 3 ... S k-1 The sources of the diodes are respectively connected t...

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Abstract

The invention provides a direct current transformer type multi-level output direct-current electrical source for quick trace reference. The direct current transformer type multi-level output direct-current electrical source for quick trace reference aims to meet requirements of some occasions needing quick change and trace reference of output voltage. Based on improvement of the prior art, the direct current transformer type multi-level output direct-current electrical source achieves the electrical source structure of single input and multi-level output by utilizing components such as a direct current transformer, a rectifier bridge and a power switch tube. A primary side of the direct current transformer is only connected with a direct-current electrical source, windings are increased in number in a secondary side, each winding secondary side is output in series connection mode after passing through the rectifier bridge and a filter capacitor, and switching on and switching off of the power switch tube can be controlled for achieving multi-level output in real time.

Description

technical field [0001] The invention proposes a DC transformer-type multi-level output DC power supply for fast tracking reference, which belongs to the field of power electronics. Background technique [0002] Variable envelope modulation technology can meet the requirements of fully utilizing the spectrum, so it is widely used in modern wireless communication modulation technology. Variable envelope modulation techniques require the use of amplifiers for signal amplification. [0003] In modern communication, there is a contradiction between linearity and efficiency. In order to amplify the signal, a linear radio frequency power amplifier (RFPA) is used, which has the characteristics of high linearity, but if the working efficiency of the linear RFPA is low, the efficiency of the entire radio frequency power amplification system will be low. [0004] Traditionally, linear RFPAs are powered by a constant DC voltage. In this method, the RF power amplifying system works in...

Claims

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Application Information

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IPC IPC(8): H02M3/315
Inventor 陈晨王慧贞吴凯成陈颖玉邹爱龙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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