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Research on Digital Control Scheme for Switching Power Amplifier
Author: WangWuBin
Tutor: LvZhengYu
School: Zhejiang University
Course: Power Electronics and Power Drives
Keywords: Switching Power Amplifier Digital control Interleaving control
CLC: TN722.75
Type: Master's thesis
Year: 2006
Downloads: 269
Quote: 2
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Abstract
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In many areas , the power amplifier applications, such as audio , electrodynamic vibration test stand , etc. are . Switching power amplifier power amplifier , cf linear power amplifier has the advantages of low loss , suitable for high power (> 1kW) switching power amplifier system . Thesis in order to enhance the performance of high-power switching power amplifier system , suitable for power MOSFET devices multi- level switching power amplifier module focus on the development and design of simple digital control scheme . Mainly related to the content of the following aspects . Firstly, analysis of the five-level diode neutral point clamped inverter circuit ( \gives a brief introduction of the experimental use of digital signal processing chip . Secondly, the control scheme of the the FNI circuit current ; subsequently proposed for digital signal processing chip to achieve improved control scheme . The program is conducive to the introduction of a novel midpoint balanced strategy , and improved digital control scheme is verified by experiment . Again , the paper analyzes the Interleaving control switching power amplifier , and further expansion of the switching power amplifier module Interleaving simulation study , a relatively simple and low-cost control program . Finally, the thesis FNI circuit based on a 2.5kW , design , 20kHz prototype , the feasibility of multi- level switching power amplifier module the Interleaving digital control and verified by experiment .
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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Amplification technology,the amplifier > Amplifier > Amplifiers: the role of sub- > Power amplifier
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